DAC advanced features

FreeRTOSConfig.h

@@ -151,7 +151,7 @@ to exclude the API function. */
     #define configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY 5
 
     #define configUSE_PORT_OPTIMISED_TASK_SELECTION 1
-#elif defined(GEX_PLAT_F072_DISCOVERY)
+#elif defined(STM32F072xB)
     // This is for F072
     #define configLIBRARY_LOWEST_INTERRUPT_PRIORITY   3
     #define configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY 1

USB/usbd_conf.c

@@ -84,13 +84,13 @@ void HAL_PCD_MspInit(PCD_HandleTypeDef* pcdHandle)
     __HAL_RCC_USB_CLK_ENABLE();
 
     /* Peripheral interrupt init */
-#if defined(GEX_PLAT_F103_BLUEPILL)
+#if GEX_PLAT_F103_BLUEPILL
     HAL_NVIC_SetPriority(USB_LP_CAN1_RX0_IRQn, 5, 0);
     HAL_NVIC_EnableIRQ(USB_LP_CAN1_RX0_IRQn);
-#elif defined(GEX_PLAT_F072_DISCOVERY)
+#elif STM32F072xB
     HAL_NVIC_SetPriority(USB_IRQn, 3, 0);
     HAL_NVIC_EnableIRQ(USB_IRQn);
-#elif defined(GEX_PLAT_F303_DISCOVERY)
+#elif GEX_PLAT_F303_DISCOVERY
     // Pins need to be configured here
 
     /**USB GPIO Configuration
@@ -149,11 +149,11 @@ void HAL_PCD_MspDeInit(PCD_HandleTypeDef* pcdHandle)
     __HAL_RCC_USB_CLK_DISABLE();
 
     /* Peripheral interrupt Deinit*/
-#if defined(GEX_PLAT_F103_BLUEPILL)
+#if GEX_PLAT_F103_BLUEPILL
     HAL_NVIC_DisableIRQ(USB_LP_CAN1_RX0_IRQn);
-#elif defined(GEX_PLAT_F072_DISCOVERY)
+#elif STM32F072xB
     HAL_NVIC_DisableIRQ(USB_IRQn);
-#elif defined(GEX_PLAT_F303_DISCOVERY)
+#elif GEX_PLAT_F303_DISCOVERY
     HAL_NVIC_DisableIRQ(USB_LP_CAN_RX0_IRQn);
 #else
   #error "BAD PLATFORM"

framework/rsc_enum.h

@@ -12,7 +12,7 @@
     X(SPI1) X(SPI2) X(SPI3) \
     X(I2C1) X(I2C2) X(I2C3) \
     X(ADC1) X(ADC2) X(ADC3) X(ADC4) \
-    X(DAC1) X(DAC2) \
+    X(DAC1) \
     X(TSC) \
     X(USART1) X(USART2) X(USART3) X(USART4) X(USART5) X(USART6) \
     X(TIM1) X(TIM2) X(TIM3) X(TIM4) X(TIM5) \

gex.mk

@@ -18,6 +18,7 @@ GEX_SRC_DIR = \
     User/units/fcap \
     User/units/touch \
     User/units/simple_pwm \
+    User/units/dac \
     User/TinyFrame \
     User/CWPack \
     User/tasks

platform/debug_uart.c

@@ -12,7 +12,7 @@
 
 #define DEBUG_USART_BAUD 115200
 
-#if GEX_PLAT_F072_DISCOVERY
+#if GEX_PLAT_F072_DISCOVERY || GEX_PLAT_F072_HUB
 
     #define DEBUG_USART USART1
     #define DEBUG_USART_RSC R_USART1

platform/hw_utils.c

@@ -263,7 +263,7 @@ void hw_periph_clock_enable(void *periph)
     else if (periph == TIM5) __HAL_RCC_TIM5_CLK_ENABLE();
 #endif
 #ifdef TIM6
-    else if (periph == TIM6) __HAL_RCC_TIM7_CLK_ENABLE();
+    else if (periph == TIM6) __HAL_RCC_TIM6_CLK_ENABLE();
 #endif
 #ifdef TIM7
     else if (periph == TIM7) __HAL_RCC_TIM7_CLK_ENABLE();
@@ -374,7 +374,7 @@ void hw_periph_clock_disable(void *periph)
     else if (periph == TIM5) __HAL_RCC_TIM5_CLK_DISABLE();
 #endif
 #ifdef TIM6
-    else if (periph == TIM6) __HAL_RCC_TIM7_CLK_DISABLE();
+    else if (periph == TIM6) __HAL_RCC_TIM6_CLK_DISABLE();
 #endif
 #ifdef TIM7
     else if (periph == TIM7) __HAL_RCC_TIM7_CLK_DISABLE();

platform/irq_dispatcher.c

@@ -113,7 +113,7 @@ void irqd_init(void)
 //    NVIC_EnableIRQ(TIM3_IRQn);                  /*!< TIM3 global Interrupt                                           */
 
     NVIC_EnableIRQ(TIM6_DAC_IRQn);              /*!< TIM6 global and DAC channel underrun error Interrupt            */
-    HAL_NVIC_SetPriority(TIM7_IRQn, 2, 0); // Used for DAC timing
+    HAL_NVIC_SetPriority(TIM6_DAC_IRQn, 2, 0); // Used for DAC timing
 
     NVIC_EnableIRQ(TIM7_IRQn);                  /*!< TIM7 global Interrupt                                           */
     HAL_NVIC_SetPriority(TIM7_IRQn, 2, 0);// this will be for dac (?)

platform/plat_compat.h

@@ -70,6 +70,7 @@
 // PLAT_LOCK_BTN - use a lock button instead of a lock jumper (push to toggle)
 // PLAT_LOCK_1CLOSED - lock jumper is active (closed / button pressed) in logical 1
 // PLAT_NO_AFNUM - legacy platform without numbered AF alternatives
+// PLAT_FULL_XTAL - use two-wire xtal attachment
 
 #if defined(GEX_PLAT_F103_BLUEPILL)
 
@@ -124,10 +125,8 @@
     #define STATUS_LED_PORT 'C'
     #define STATUS_LED_PIN  13
 
-#elif defined(GEX_PLAT_F072_DISCOVERY)
+#elif defined(STM32F072xB)
 
-    // platform name for the version string
-    #define GEX_PLATFORM "STM32F072-Discovery"
     #define PLAT_AHB_MHZ 48
     #define PLAT_APB1_MHZ 48
 
@@ -162,6 +161,10 @@
     // Number of GPIO ports A,B,C...
     #define PORTS_COUNT 6
 
+    #if defined(GEX_PLAT_F072_DISCOVERY)
+        // platform name for the version string
+        #define GEX_PLATFORM "STM32F072-Discovery"
+
         // Lock jumper config
         #define LOCK_JUMPER_PORT 'A'
         #define LOCK_JUMPER_PIN  0
@@ -171,6 +174,24 @@
         // Status LED config
         #define STATUS_LED_PORT 'C'
         #define STATUS_LED_PIN  6 // RED LED "UP"
+    #elif defined(GEX_PLAT_F072_HUB)
+        // platform name for the version string
+        #define GEX_PLATFORM "STM32F072-HUB"
+
+        #define PLAT_FULL_XTAL 1
+
+        // Lock jumper config
+        #define LOCK_JUMPER_PORT 'D'
+        #define LOCK_JUMPER_PIN  2
+        #define PLAT_LOCK_BTN 1 // toggle button instead of a jumper
+        #define PLAT_LOCK_1CLOSED 0 // toggle button active in log. 1
+
+        // Status LED config
+        #define STATUS_LED_PORT 'A'
+        #define STATUS_LED_PIN  15 // RED LED "UP"
+    #else
+        #error Bad platform
+    #endif
 
 #elif defined(GEX_PLAT_F303_DISCOVERY)
 

platform/platform.c

@@ -2,6 +2,7 @@
 // Created by MightyPork on 2017/11/26.
 //
 
+#include <units/dac/unit_dac.h>
 #include "platform.h"
 #include "usbd_core.h"
 #include "USB/usb_device.h"
@@ -75,7 +76,7 @@ void plat_init_resources(void)
         // BOOT pin(s)
         rv |= rsc_claim(&UNIT_SYSTEM, R_PB2); // BOOT1
     }
-#elif defined(GEX_PLAT_F072_DISCOVERY)
+#elif defined(STM32F072xB)
     // Platform STM32F073RBT
 
     // Additional GPIO ports
@@ -94,6 +95,7 @@ void plat_init_resources(void)
     ureg_add_type(&UNIT_FCAP);
     ureg_add_type(&UNIT_TOUCH);
     ureg_add_type(&UNIT_PWMDIM);
+    ureg_add_type(&UNIT_DAC);
 
     // Free all present resources
     {
@@ -122,13 +124,17 @@ void plat_init_resources(void)
     // Claim resources not available due to board layout or internal usage
     {
         // HAL timebase
-        rv |= rsc_claim(&UNIT_SYSTEM, R_TIM1);
+        rv |= rsc_claim(&UNIT_SYSTEM, R_TIM17);
         // HSE crystal
         rv |= rsc_claim(&UNIT_SYSTEM, R_PF0);
-        //rv |= rsc_claim(&UNIT_SYSTEM, R_PF1); // - not used in BYPASS mode
+
+        #if PLAT_FULL_XTAL
+            rv |= rsc_claim(&UNIT_SYSTEM, R_PF1); // - not used in BYPASS mode
+        #endif
+
         // SWD
-        rv |= rsc_claim(&UNIT_SYSTEM, R_PA13);
-        rv |= rsc_claim(&UNIT_SYSTEM, R_PA14);
+//        rv |= rsc_claim(&UNIT_SYSTEM, R_PA13);
+//        rv |= rsc_claim(&UNIT_SYSTEM, R_PA14);
         // USB
         rv |= rsc_claim(&UNIT_SYSTEM, R_PA11);
         rv |= rsc_claim(&UNIT_SYSTEM, R_PA12);

platform/timebase.c

@@ -7,8 +7,6 @@
 
 // ---------------------------- HAL TIMEBASE -----------------------------
 
-#define TIMEBASE_TIMER TIM17
-
 HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
 {
     // EDIT - used 17 instead because 14 was needed for fcap
@@ -102,21 +100,36 @@ uint64_t PTIM_GetMicrotime(void)
     return (uint64_t) uwMillis * 1000 + uwMicros;
 }
 
+
 /** microsecond delay */
-void PTIM_MicroDelay(uint16_t usec)
+void PTIM_MicroDelayAligned(uint32_t usec, register const uint32_t start)
 {
     assert_param(usec < 1000);
 
-    const uint16_t start = (uint16_t) TIMEBASE_TIMER->CNT;
-    const uint16_t remain = (uint16_t) (999 - start);
+    register const uint32_t remain = (1000 - start);
 
     if (remain > usec) {
         // timer still has enough space going forward to pass the required wait time
-        for (; TIMEBASE_TIMER->CNT < start + usec;);
+        register const uint32_t end = start + usec;
+        while (TIMEBASE_TIMER->CNT < end) {
+            __NOP();
+            __NOP();
+            __NOP();
+        }
+        return;
     }
     else {
         // timer is too close to the end
         usec -= remain;
-        for (; TIMEBASE_TIMER->CNT >= start || TIMEBASE_TIMER->CNT < usec;);
+        while (1) {
+            register const uint32_t t = TIMEBASE_TIMER->CNT;
+            if (t < start && t >= usec) return;
+        }
     }
 }
+
+/** microsecond delay */
+void PTIM_MicroDelay(const uint32_t usec)
+{
+    PTIM_MicroDelayAligned(usec, TIMEBASE_TIMER->CNT);
+}

platform/timebase.h

@@ -13,6 +13,8 @@
 
 #include "platform.h"
 
+#define TIMEBASE_TIMER TIM17
+
 /**
  * Precision timer: get microtime as uint64_t
  * This timestamp should be monotonously increasing with a precision of ±0.5µs
@@ -36,6 +38,24 @@ static inline uint32_t PTIM_GetTime(void)
  *
  * @param usec - max 998
  */
-void PTIM_MicroDelay(uint16_t usec);
+void PTIM_MicroDelay(uint32_t usec);
+
+/**
+ * Microsecond busy delay with alignment (reduced length jitter but possible up to 1 us delay)
+ *
+ * @param usec
+ */
+void PTIM_MicroDelayAligned(uint32_t usec, uint32_t start);
+
+/**
+ * Wait until the next micro timer tick
+ */
+static inline uint32_t PTIM_MicroDelayAlign(void)
+{
+    const uint32_t c = TIMEBASE_TIMER->CNT;
+    uint32_t res;
+    while ((res = TIMEBASE_TIMER->CNT) == c);
+    return res;
+}
 
 #endif //GEX_F072_TIMEBASE_H

units/1wire/unit_1wire.c

@@ -89,7 +89,7 @@ enum PinCmd_ {
     CMD_SEARCH_CONTINUE = 3, // continue the previously started scan, retrieving more devices
     CMD_READ_ADDR = 4,      // read the ROM code from a single device (for single-device bus)
 
-    CMD_WRITE = 10,    // write multiple bytes using the SKIP_ROM command
+    CMD_QUERY = 10,    // write multiple bytes using the SKIP_ROM command
     CMD_READ = 11,   // write multiple bytes using a ROM address
 
     CMD_POLL_FOR_1 = 20,
@@ -194,7 +194,7 @@ static error_t OW_handleRequest(Unit *unit, TF_ID frame_id, uint8_t command, Pay
          * addr:u64, rest:write_data
          * if addr is 0, use SKIP_ROM
          */
-        case CMD_WRITE:
+        case CMD_QUERY:
             addr = pp_u64(pp);
             tail = pp_tail(pp, &remain);
             TRY(UU_1WIRE_Write(unit, addr, tail, remain));

units/dac/_dac_api.c

@@ -0,0 +1,84 @@
+//
+// Created by MightyPork on 2018/02/03.
+//
+
+#include "platform.h"
+#include "unit_base.h"
+#include "unit_dac.h"
+
+#define DAC_INTERNAL
+#include "_dac_internal.h"
+
+/**
+ * Re-configure the
+ * @param unit
+ */
+void UDAC_Reconfigure(Unit *unit)
+{
+    struct priv *priv = unit->data;
+
+    // back-up IT state
+    bool IT_enabled = (bool) LL_TIM_IsEnabledIT_UPDATE(priv->TIMx);
+    if (IT_enabled) {
+        LL_TIM_DisableIT_UPDATE(priv->TIMx);
+    }
+
+    // ...
+    DAC->CR &= ~(DAC_CR_EN1 | DAC_CR_EN2);
+
+    uint32_t CR = 0;
+    if (priv->cfg.ch[0].enable) {
+        CR |=
+            (priv->cfg.ch[0].buffered ? 0 : DAC_CR_BOFF1) |
+            (priv->ch[0].noise_type << DAC_CR_WAVE1_Pos) |
+            (priv->ch[0].noise_level & 0xF) << DAC_CR_MAMP1_Pos |
+            DAC_CR_TEN1 |
+            (0b111 << DAC_CR_TSEL1_Pos); // software trigger;
+
+        CR |= DAC_CR_EN1;
+    }
+
+    if (priv->cfg.ch[1].enable) {
+        CR |=
+            (priv->cfg.ch[1].buffered ? 0 : DAC_CR_BOFF2) |
+            (priv->ch[1].noise_type << DAC_CR_WAVE2_Pos) |
+            (priv->ch[1].noise_level & 0xF) << DAC_CR_MAMP2_Pos |
+            DAC_CR_TEN2 |
+            (0b111 << DAC_CR_TSEL2_Pos); // software trigger
+        CR |= DAC_CR_EN2;
+    }
+
+    DAC->CR = CR;
+    // ...
+
+    if (IT_enabled) {
+        LL_TIM_EnableIT_UPDATE(priv->TIMx);
+    }
+}
+
+error_t UDAC_SetFreq(Unit *unit, int channel, float freq)
+{
+    struct priv *priv = unit->data;
+
+    priv->ch[channel].increment = (uint32_t) roundf(25.0f * freq * UDAC_VALUE_COUNT * // FIXME constant seems derived from the divide ...?
+                                                        ((float)UDAC_TIM_FREQ_DIVIDER / PLAT_AHB_MHZ)
+    );
+
+//    dbg("Ch %d: Computed increment: %d", channel+1, (int)priv->ch[channel].increment);
+
+    return E_SUCCESS;
+}
+
+void UDAC_ToggleTimerIfNeeded(Unit *unit)
+{
+    struct priv *priv = unit->data;
+
+    if (priv->ch[0].waveform == UDAC_WAVE_DC && priv->ch[1].waveform == UDAC_WAVE_DC) {
+        LL_TIM_DisableCounter(priv->TIMx);
+
+        // manually call the interrupt function to update the level
+        UDAC_HandleIT(unit);
+    } else {
+        LL_TIM_EnableCounter(priv->TIMx);
+    }
+}

units/dac/_dac_core.c

@@ -0,0 +1,392 @@
+//
+// Created by MightyPork on 2018/03/10.
+//
+
+#include "platform.h"
+#include "unit_dac.h"
+
+#define DAC_INTERNAL
+#include "_dac_internal.h"
+
+
+#pragma GCC push_options
+#pragma GCC optimize ("O2")
+void UDAC_HandleIT(void *arg)
+{
+    Unit *unit = arg;
+    struct priv *priv = unit->data;
+    LL_TIM_ClearFlag_UPDATE(priv->TIMx);
+
+    // TODO optimize to allow faster update speed
+
+    uint16_t vals[2];
+    for (int i = 0; i < 2; i++) {
+        struct udac_channel_live *const ch = &priv->ch[i];
+
+        if (ch->waveform == UDAC_WAVE_DC) {
+            // skip the whole counter thing for DC
+            vals[i] = ch->dc_level;
+            continue;
+        }
+
+        ch->counter += ch->increment;
+        const uint16_t index = (uint16_t) (ch->counter >> UDAC_INDEX_SHIFT);
+
+        switch (ch->waveform) {
+            case UDAC_WAVE_SINE: {
+                const uint32_t phase = index >> (UDAC_INDEX_WIDTH - 2);
+
+                uint32_t pos = (uint32_t) index & (((1<<(UDAC_INDEX_WIDTH - 2)) - 1));
+
+                if (phase & 0b01) {
+                    // 2nd and 4th quarter (01, 11)
+                    pos = (UDAC_VALUE_COUNT/4 - 1) - pos;
+                }
+
+                uint32_t value;
+
+                /* unpack */
+                const uint32_t nthbyte = (pos * 3) / 2;
+                const uint8_t topbyte = LUT_sine_8192_quad_packed[nthbyte];
+                const uint8_t botbyte = LUT_sine_8192_quad_packed[nthbyte + 1];
+                if (pos & 1) {
+                    // odd index
+                    value = (uint32_t) (((topbyte & 0xF) << 8) | botbyte);
+                }
+                else {
+                    value = (uint32_t) ((topbyte << 4) | ((botbyte & 0xF0) >> 4));
+                }
+                /* end unpack -> value */
+
+                if (phase & 0b10) {
+                    // 3rd and 4th quarter (10, 11)
+                    value = 2047 - value;
+                }
+                else {
+                    // 1st and 2nd quarter (00, 01)
+                    value = 2048 + value;
+                }
+
+                vals[i] = (uint16_t) value;
+
+                break;
+            }
+
+            case UDAC_WAVE_RECTANGLE:
+                if (index < ch->rectangle_ontime) {
+                    vals[i] = ch->rectangle_high;
+                } else {
+                    vals[i] = ch->rectangle_low;
+                }
+                break;
+
+            case UDAC_WAVE_SAWTOOTH_UP:
+                vals[i] = (uint16_t) (index / 2); // for 8192 steps, this will produce 0-4095
+                break;
+
+            case UDAC_WAVE_SAWTOOTH_DOWN:
+                vals[i] = (uint16_t) (4095 - (index / 2)); // for 8192 steps, this will produce 0-4095
+                break;
+
+            case UDAC_WAVE_TRIANGLE: {
+                if (index < 4096) {
+                    vals[i] = index;
+                }
+                else {
+                    vals[i] = (uint16_t) (8191 - index);
+                }
+                break;
+            }
+
+            default:
+                vals[i] = 0; // this shouldn't happen
+                break;
+        } // end select waveform
+    } // end for 0,1
+
+    DAC->DHR12RD = (vals[1] << 16) | vals[0];
+
+    // Trigger a conversion
+    DAC->SWTRIGR = (DAC_SWTR_CH1 | DAC_SWTR_CH2);
+}
+#pragma GCC pop_options
+
+
+/**
+ * This is the first 1/4 of a 12-bit sine wave sampled in 8192 points, each two points packed into three bytes (saves 1/4 of space used by uint16_t's)
+ * The array holds 2048 data points which can be easily offset / flipped to cover the entire waveform.
+ *
+ * |<-->|
+ *    _---_
+ *   /     \
+ *  /       \
+ * /---------\---------/
+ *            \       /
+ *             \_   _/
+ *               ---
+ */
+#if 0 // this is rail to rail, but the dac doesn't work well at the rails and it gets flattened
+const uint8_t LUT_sine_8192_quad_packed[] = {
+    0x00, 0x00, 0x02, 0x00, 0x30, 0x05, 0x00, 0x60, 0x08, 0x00, 0x90, 0x0B, 0x00, 0xD0, 0x0E, 0x01, 0x00, 0x11, 0x01, 0x30, 0x14, 0x01, 0x60, 0x18,
+    0x01, 0x90, 0x1B, 0x01, 0xC0, 0x1E, 0x01, 0xF0, 0x21, 0x02, 0x30, 0x24, 0x02, 0x60, 0x27, 0x02, 0x90, 0x2A, 0x02, 0xC0, 0x2E, 0x02, 0xF0, 0x31,
+    0x03, 0x20, 0x34, 0x03, 0x50, 0x37, 0x03, 0x90, 0x3A, 0x03, 0xC0, 0x3D, 0x03, 0xF0, 0x40, 0x04, 0x20, 0x43, 0x04, 0x50, 0x47, 0x04, 0x80, 0x4A,
+    0x04, 0xB0, 0x4D, 0x04, 0xE0, 0x50, 0x05, 0x20, 0x53, 0x05, 0x50, 0x56, 0x05, 0x80, 0x59, 0x05, 0xB0, 0x5D, 0x05, 0xE0, 0x60, 0x06, 0x10, 0x63,
+    0x06, 0x40, 0x66, 0x06, 0x80, 0x69, 0x06, 0xB0, 0x6C, 0x06, 0xE0, 0x6F, 0x07, 0x10, 0x73, 0x07, 0x40, 0x76, 0x07, 0x70, 0x79, 0x07, 0xA0, 0x7C,
+    0x07, 0xE0, 0x7F, 0x08, 0x10, 0x82, 0x08, 0x40, 0x85, 0x08, 0x70, 0x88, 0x08, 0xA0, 0x8C, 0x08, 0xD0, 0x8F, 0x09, 0x00, 0x92, 0x09, 0x30, 0x95,
+    0x09, 0x70, 0x98, 0x09, 0xA0, 0x9B, 0x09, 0xD0, 0x9E, 0x0A, 0x00, 0xA2, 0x0A, 0x30, 0xA5, 0x0A, 0x60, 0xA8, 0x0A, 0x90, 0xAB, 0x0A, 0xC0, 0xAE,
+    0x0B, 0x00, 0xB1, 0x0B, 0x30, 0xB4, 0x0B, 0x60, 0xB7, 0x0B, 0x90, 0xBB, 0x0B, 0xC0, 0xBE, 0x0B, 0xF0, 0xC1, 0x0C, 0x20, 0xC4, 0x0C, 0x60, 0xC7,
+    0x0C, 0x90, 0xCA, 0x0C, 0xC0, 0xCD, 0x0C, 0xF0, 0xD0, 0x0D, 0x20, 0xD4, 0x0D, 0x50, 0xD7, 0x0D, 0x80, 0xDA, 0x0D, 0xB0, 0xDD, 0x0D, 0xF0, 0xE0,
+    0x0E, 0x20, 0xE3, 0x0E, 0x50, 0xE6, 0x0E, 0x80, 0xE9, 0x0E, 0xB0, 0xED, 0x0E, 0xE0, 0xF0, 0x0F, 0x10, 0xF3, 0x0F, 0x40, 0xF6, 0x0F, 0x70, 0xF9,
+    0x0F, 0xB0, 0xFC, 0x0F, 0xE0, 0xFF, 0x10, 0x11, 0x02, 0x10, 0x41, 0x05, 0x10, 0x71, 0x09, 0x10, 0xA1, 0x0C, 0x10, 0xD1, 0x0F, 0x11, 0x01, 0x12,
+    0x11, 0x31, 0x15, 0x11, 0x71, 0x18, 0x11, 0xA1, 0x1B, 0x11, 0xD1, 0x1E, 0x12, 0x01, 0x21, 0x12, 0x31, 0x25, 0x12, 0x61, 0x28, 0x12, 0x91, 0x2B,
+    0x12, 0xC1, 0x2E, 0x12, 0xF1, 0x31, 0x13, 0x31, 0x34, 0x13, 0x61, 0x37, 0x13, 0x91, 0x3A, 0x13, 0xC1, 0x3D, 0x13, 0xF1, 0x41, 0x14, 0x21, 0x44,
+    0x14, 0x51, 0x47, 0x14, 0x81, 0x4A, 0x14, 0xB1, 0x4D, 0x14, 0xE1, 0x50, 0x15, 0x21, 0x53, 0x15, 0x51, 0x56, 0x15, 0x81, 0x59, 0x15, 0xB1, 0x5C,
+    0x15, 0xE1, 0x60, 0x16, 0x11, 0x63, 0x16, 0x41, 0x66, 0x16, 0x71, 0x69, 0x16, 0xA1, 0x6C, 0x16, 0xD1, 0x6F, 0x17, 0x11, 0x72, 0x17, 0x41, 0x75,
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+    0x71, 0x97, 0x1A, 0x71, 0xA7, 0x1B, 0x71, 0xC7, 0x1D, 0x71, 0xD7, 0x1E, 0x71, 0xF7, 0x1F, 0x72, 0x07, 0x21, 0x72, 0x27, 0x22, 0x72, 0x37, 0x24,
+    0x72, 0x47, 0x25, 0x72, 0x67, 0x27, 0x72, 0x77, 0x28, 0x72, 0x97, 0x29, 0x72, 0xA7, 0x2B, 0x72, 0xB7, 0x2C, 0x72, 0xD7, 0x2E, 0x72, 0xE7, 0x2F,
+    0x73, 0x07, 0x30, 0x73, 0x17, 0x32, 0x73, 0x27, 0x33, 0x73, 0x47, 0x34, 0x73, 0x57, 0x36, 0x73, 0x67, 0x37, 0x73, 0x87, 0x38, 0x73, 0x97, 0x3A,
+    0x73, 0xA7, 0x3B, 0x73, 0xC7, 0x3C, 0x73, 0xD7, 0x3E, 0x73, 0xE7, 0x3F, 0x74, 0x07, 0x40, 0x74, 0x17, 0x42, 0x74, 0x27, 0x43, 0x74, 0x47, 0x44,
+    0x74, 0x57, 0x46, 0x74, 0x67, 0x47, 0x74, 0x87, 0x48, 0x74, 0x97, 0x4A, 0x74, 0xA7, 0x4B, 0x74, 0xC7, 0x4C, 0x74, 0xD7, 0x4D, 0x74, 0xE7, 0x4F,
+    0x74, 0xF7, 0x50, 0x75, 0x17, 0x51, 0x75, 0x27, 0x53, 0x75, 0x37, 0x54, 0x75, 0x47, 0x55, 0x75, 0x67, 0x56, 0x75, 0x77, 0x58, 0x75, 0x87, 0x59,
+    0x75, 0x97, 0x5A, 0x75, 0xB7, 0x5B, 0x75, 0xC7, 0x5D, 0x75, 0xD7, 0x5E, 0x75, 0xE7, 0x5F, 0x76, 0x07, 0x60, 0x76, 0x17, 0x61, 0x76, 0x27, 0x63,
+    0x76, 0x37, 0x64, 0x76, 0x47, 0x65, 0x76, 0x67, 0x66, 0x76, 0x77, 0x67, 0x76, 0x87, 0x69, 0x76, 0x97, 0x6A, 0x76, 0xA7, 0x6B, 0x76, 0xB7, 0x6C,
+    0x76, 0xD7, 0x6D, 0x76, 0xE7, 0x6E, 0x76, 0xF7, 0x70, 0x77, 0x07, 0x71, 0x77, 0x17, 0x72, 0x77, 0x27, 0x73, 0x77, 0x47, 0x74, 0x77, 0x57, 0x75,
+    0x77, 0x67, 0x76, 0x77, 0x77, 0x78, 0x77, 0x87, 0x79, 0x77, 0x97, 0x7A, 0x77, 0xA7, 0x7B, 0x77, 0xB7, 0x7C, 0x77, 0xD7, 0x7D, 0x77, 0xE7, 0x7E,
+    0x77, 0xF7, 0x7F, 0x78, 0x07, 0x80, 0x78, 0x17, 0x81, 0x78, 0x27, 0x83, 0x78, 0x37, 0x84, 0x78, 0x47, 0x85, 0x78, 0x57, 0x86, 0x78, 0x67, 0x87,
+    0x78, 0x77, 0x88, 0x78, 0x87, 0x89, 0x78, 0x97, 0x8A, 0x78, 0xA7, 0x8B, 0x78, 0xC7, 0x8C, 0x78, 0xD7, 0x8D, 0x78, 0xE7, 0x8E, 0x78, 0xF7, 0x8F,
+    0x79, 0x07, 0x90, 0x79, 0x17, 0x91, 0x79, 0x27, 0x92, 0x79, 0x37, 0x93, 0x79, 0x47, 0x94, 0x79, 0x57, 0x95, 0x79, 0x67, 0x96, 0x79, 0x77, 0x97,
+    0x79, 0x87, 0x98, 0x79, 0x97, 0x99, 0x79, 0xA7, 0x9A, 0x79, 0xB7, 0x9B, 0x79, 0xC7, 0x9C, 0x79, 0xD7, 0x9D, 0x79, 0xE7, 0x9E, 0x79, 0xE7, 0x9F,
+    0x79, 0xF7, 0xA0, 0x7A, 0x07, 0xA1, 0x7A, 0x17, 0xA2, 0x7A, 0x27, 0xA3, 0x7A, 0x37, 0xA4, 0x7A, 0x47, 0xA5, 0x7A, 0x57, 0xA5, 0x7A, 0x67, 0xA6,
+    0x7A, 0x77, 0xA7, 0x7A, 0x87, 0xA8, 0x7A, 0x97, 0xA9, 0x7A, 0xA7, 0xAA, 0x7A, 0xA7, 0xAB, 0x7A, 0xB7, 0xAC, 0x7A, 0xC7, 0xAD, 0x7A, 0xD7, 0xAE,
+    0x7A, 0xE7, 0xAE, 0x7A, 0xF7, 0xAF, 0x7B, 0x07, 0xB0, 0x7B, 0x17, 0xB1, 0x7B, 0x17, 0xB2, 0x7B, 0x27, 0xB3, 0x7B, 0x37, 0xB4, 0x7B, 0x47, 0xB4,
+    0x7B, 0x57, 0xB5, 0x7B, 0x67, 0xB6, 0x7B, 0x77, 0xB7, 0x7B, 0x77, 0xB8, 0x7B, 0x87, 0xB9, 0x7B, 0x97, 0xB9, 0x7B, 0xA7, 0xBA, 0x7B, 0xB7, 0xBB,
+    0x7B, 0xB7, 0xBC, 0x7B, 0xC7, 0xBD, 0x7B, 0xD7, 0xBD, 0x7B, 0xE7, 0xBE, 0x7B, 0xF7, 0xBF, 0x7B, 0xF7, 0xC0, 0x7C, 0x07, 0xC1, 0x7C, 0x17, 0xC1,
+    0x7C, 0x27, 0xC2, 0x7C, 0x27, 0xC3, 0x7C, 0x37, 0xC4, 0x7C, 0x47, 0xC4, 0x7C, 0x57, 0xC5, 0x7C, 0x57, 0xC6, 0x7C, 0x67, 0xC7, 0x7C, 0x77, 0xC7,
+    0x7C, 0x87, 0xC8, 0x7C, 0x87, 0xC9, 0x7C, 0x97, 0xC9, 0x7C, 0xA7, 0xCA, 0x7C, 0xA7, 0xCB, 0x7C, 0xB7, 0xCC, 0x7C, 0xC7, 0xCC, 0x7C, 0xD7, 0xCD,
+    0x7C, 0xD7, 0xCE, 0x7C, 0xE7, 0xCE, 0x7C, 0xF7, 0xCF, 0x7C, 0xF7, 0xD0, 0x7D, 0x07, 0xD0, 0x7D, 0x17, 0xD1, 0x7D, 0x17, 0xD2, 0x7D, 0x27, 0xD2,
+    0x7D, 0x37, 0xD3, 0x7D, 0x37, 0xD4, 0x7D, 0x47, 0xD4, 0x7D, 0x57, 0xD5, 0x7D, 0x57, 0xD5, 0x7D, 0x67, 0xD6, 0x7D, 0x67, 0xD7, 0x7D, 0x77, 0xD7,
+    0x7D, 0x87, 0xD8, 0x7D, 0x87, 0xD9, 0x7D, 0x97, 0xD9, 0x7D, 0x97, 0xDA, 0x7D, 0xA7, 0xDA, 0x7D, 0xB7, 0xDB, 0x7D, 0xB7, 0xDC, 0x7D, 0xC7, 0xDC,
+    0x7D, 0xC7, 0xDD, 0x7D, 0xD7, 0xDD, 0x7D, 0xE7, 0xDE, 0x7D, 0xE7, 0xDE, 0x7D, 0xF7, 0xDF, 0x7D, 0xF7, 0xE0, 0x7E, 0x07, 0xE0, 0x7E, 0x07, 0xE1,
+    0x7E, 0x17, 0xE1, 0x7E, 0x17, 0xE2, 0x7E, 0x27, 0xE2, 0x7E, 0x27, 0xE3, 0x7E, 0x37, 0xE3, 0x7E, 0x37, 0xE4, 0x7E, 0x47, 0xE4, 0x7E, 0x57, 0xE5,
+    0x7E, 0x57, 0xE5, 0x7E, 0x67, 0xE6, 0x7E, 0x67, 0xE6, 0x7E, 0x67, 0xE7, 0x7E, 0x77, 0xE7, 0x7E, 0x77, 0xE8, 0x7E, 0x87, 0xE8, 0x7E, 0x87, 0xE9,
+    0x7E, 0x97, 0xE9, 0x7E, 0x97, 0xEA, 0x7E, 0xA7, 0xEA, 0x7E, 0xA7, 0xEA, 0x7E, 0xB7, 0xEB, 0x7E, 0xB7, 0xEB, 0x7E, 0xC7, 0xEC, 0x7E, 0xC7, 0xEC,
+    0x7E, 0xC7, 0xED, 0x7E, 0xD7, 0xED, 0x7E, 0xD7, 0xED, 0x7E, 0xE7, 0xEE, 0x7E, 0xE7, 0xEE, 0x7E, 0xE7, 0xEF, 0x7E, 0xF7, 0xEF, 0x7E, 0xF7, 0xEF,
+    0x7F, 0x07, 0xF0, 0x7F, 0x07, 0xF0, 0x7F, 0x07, 0xF1, 0x7F, 0x17, 0xF1, 0x7F, 0x17, 0xF1, 0x7F, 0x17, 0xF2, 0x7F, 0x27, 0xF2, 0x7F, 0x27, 0xF2,
+    0x7F, 0x37, 0xF3, 0x7F, 0x37, 0xF3, 0x7F, 0x37, 0xF3, 0x7F, 0x47, 0xF4, 0x7F, 0x47, 0xF4, 0x7F, 0x47, 0xF4, 0x7F, 0x57, 0xF5, 0x7F, 0x57, 0xF5,
+    0x7F, 0x57, 0xF5, 0x7F, 0x57, 0xF6, 0x7F, 0x67, 0xF6, 0x7F, 0x67, 0xF6, 0x7F, 0x67, 0xF6, 0x7F, 0x77, 0xF7, 0x7F, 0x77, 0xF7, 0x7F, 0x77, 0xF7,
+    0x7F, 0x77, 0xF8, 0x7F, 0x87, 0xF8, 0x7F, 0x87, 0xF8, 0x7F, 0x87, 0xF8, 0x7F, 0x87, 0xF9, 0x7F, 0x97, 0xF9, 0x7F, 0x97, 0xF9, 0x7F, 0x97, 0xF9,
+    0x7F, 0x97, 0xFA, 0x7F, 0xA7, 0xFA, 0x7F, 0xA7, 0xFA, 0x7F, 0xA7, 0xFA, 0x7F, 0xA7, 0xFA, 0x7F, 0xB7, 0xFB, 0x7F, 0xB7, 0xFB, 0x7F, 0xB7, 0xFB,
+    0x7F, 0xB7, 0xFB, 0x7F, 0xB7, 0xFB, 0x7F, 0xC7, 0xFC, 0x7F, 0xC7, 0xFC, 0x7F, 0xC7, 0xFC, 0x7F, 0xC7, 0xFC, 0x7F, 0xC7, 0xFC, 0x7F, 0xC7, 0xFC,
+    0x7F, 0xD7, 0xFD, 0x7F, 0xD7, 0xFD, 0x7F, 0xD7, 0xFD, 0x7F, 0xD7, 0xFD, 0x7F, 0xD7, 0xFD, 0x7F, 0xD7, 0xFD, 0x7F, 0xD7, 0xFD, 0x7F, 0xD7, 0xFE,
+    0x7F, 0xE7, 0xFE, 0x7F, 0xE7, 0xFE, 0x7F, 0xE7, 0xFE, 0x7F, 0xE7, 0xFE, 0x7F, 0xE7, 0xFE, 0x7F, 0xE7, 0xFE, 0x7F, 0xE7, 0xFE, 0x7F, 0xE7, 0xFE,
+    0x7F, 0xE7, 0xFE, 0x7F, 0xE7, 0xFE, 0x7F, 0xF7, 0xFF, 0x7F, 0xF7, 0xFF, 0x7F, 0xF7, 0xFF, 0x7F, 0xF7, 0xFF, 0x7F, 0xF7, 0xFF, 0x7F, 0xF7, 0xFF,
+    0x7F, 0xF7, 0xFF, 0x7F, 0xF7, 0xFF, 0x7F, 0xF7, 0xFF, 0x7F, 0xF7, 0xFF, 0x7F, 0xF7, 0xFF, 0x7F, 0xF7, 0xFF, 0x7F, 0xF7, 0xFF, 0x7F, 0xF7, 0xFF,
+};
+#else
+// range 2000
+const uint8_t LUT_sine_8192_quad_packed[3072] = {
+    0x00, 0x00, 0x02, 0x00, 0x30, 0x05, 0x00, 0x60, 0x08, 0x00, 0x90, 0x0B, 0x00, 0xC0, 0x0E, 0x00, 0xF0, 0x11, 0x01, 0x20, 0x14, 0x01, 0x50, 0x17,
+    0x01, 0x90, 0x1A, 0x01, 0xC0, 0x1D, 0x01, 0xF0, 0x20, 0x02, 0x20, 0x23, 0x02, 0x50, 0x26, 0x02, 0x80, 0x29, 0x02, 0xB0, 0x2C, 0x02, 0xE0, 0x30,
+    0x03, 0x10, 0x33, 0x03, 0x40, 0x36, 0x03, 0x70, 0x39, 0x03, 0xA0, 0x3C, 0x03, 0xD0, 0x3F, 0x04, 0x00, 0x42, 0x04, 0x30, 0x45, 0x04, 0x70, 0x48,
+    0x04, 0xA0, 0x4B, 0x04, 0xD0, 0x4E, 0x05, 0x00, 0x51, 0x05, 0x30, 0x54, 0x05, 0x60, 0x57, 0x05, 0x90, 0x5A, 0x05, 0xC0, 0x5E, 0x05, 0xF0, 0x61,
+    0x06, 0x20, 0x64, 0x06, 0x50, 0x67, 0x06, 0x80, 0x6A, 0x06, 0xB0, 0x6D, 0x06, 0xE0, 0x70, 0x07, 0x10, 0x73, 0x07, 0x50, 0x76, 0x07, 0x80, 0x79,
+    0x07, 0xB0, 0x7C, 0x07, 0xE0, 0x7F, 0x08, 0x10, 0x82, 0x08, 0x40, 0x85, 0x08, 0x70, 0x88, 0x08, 0xA0, 0x8B, 0x08, 0xD0, 0x8F, 0x09, 0x00, 0x92,
+    0x09, 0x30, 0x95, 0x09, 0x60, 0x98, 0x09, 0x90, 0x9B, 0x09, 0xC0, 0x9E, 0x09, 0xF0, 0xA1, 0x0A, 0x20, 0xA4, 0x0A, 0x50, 0xA7, 0x0A, 0x90, 0xAA,
+    0x0A, 0xC0, 0xAD, 0x0A, 0xF0, 0xB0, 0x0B, 0x20, 0xB3, 0x0B, 0x50, 0xB6, 0x0B, 0x80, 0xB9, 0x0B, 0xB0, 0xBC, 0x0B, 0xE0, 0xBF, 0x0C, 0x10, 0xC3,
+    0x0C, 0x40, 0xC6, 0x0C, 0x70, 0xC9, 0x0C, 0xA0, 0xCC, 0x0C, 0xD0, 0xCF, 0x0D, 0x00, 0xD2, 0x0D, 0x30, 0xD5, 0x0D, 0x60, 0xD8, 0x0D, 0x90, 0xDB,
+    0x0D, 0xC0, 0xDE, 0x0D, 0xF0, 0xE1, 0x0E, 0x30, 0xE4, 0x0E, 0x60, 0xE7, 0x0E, 0x90, 0xEA, 0x0E, 0xC0, 0xED, 0x0E, 0xF0, 0xF0, 0x0F, 0x20, 0xF3,
+    0x0F, 0x50, 0xF6, 0x0F, 0x80, 0xF9, 0x0F, 0xB0, 0xFC, 0x0F, 0xE0, 0xFF, 0x10, 0x11, 0x03, 0x10, 0x41, 0x06, 0x10, 0x71, 0x09, 0x10, 0xA1, 0x0C,
+    0x10, 0xD1, 0x0F, 0x11, 0x01, 0x12, 0x11, 0x31, 0x15, 0x11, 0x61, 0x18, 0x11, 0x91, 0x1B, 0x11, 0xC1, 0x1E, 0x11, 0xF1, 0x21, 0x12, 0x21, 0x24,
+    0x12, 0x51, 0x27, 0x12, 0x81, 0x2A, 0x12, 0xC1, 0x2D, 0x12, 0xF1, 0x30, 0x13, 0x21, 0x33, 0x13, 0x51, 0x36, 0x13, 0x81, 0x39, 0x13, 0xB1, 0x3C,
+    0x13, 0xE1, 0x3F, 0x14, 0x11, 0x42, 0x14, 0x41, 0x45, 0x14, 0x71, 0x48, 0x14, 0xA1, 0x4B, 0x14, 0xD1, 0x4E, 0x15, 0x01, 0x51, 0x15, 0x31, 0x54,
+    0x15, 0x61, 0x57, 0x15, 0x91, 0x5A, 0x15, 0xC1, 0x5D, 0x15, 0xF1, 0x60, 0x16, 0x21, 0x64, 0x16, 0x51, 0x67, 0x16, 0x81, 0x6A, 0x16, 0xB1, 0x6D,
+    0x16, 0xE1, 0x70, 0x17, 0x11, 0x73, 0x17, 0x41, 0x76, 0x17, 0x71, 0x79, 0x17, 0xA1, 0x7C, 0x17, 0xD1, 0x7F, 0x18, 0x01, 0x82, 0x18, 0x31, 0x85,
+    0x18, 0x61, 0x88, 0x18, 0x91, 0x8B, 0x18, 0xC1, 0x8E, 0x18, 0xF1, 0x91, 0x19, 0x21, 0x94, 0x19, 0x51, 0x97, 0x19, 0x81, 0x9A, 0x19, 0xB1, 0x9D,
+    0x19, 0xE1, 0xA0, 0x1A, 0x11, 0xA3, 0x1A, 0x41, 0xA6, 0x1A, 0x71, 0xA9, 0x1A, 0xA1, 0xAC, 0x1A, 0xD1, 0xAF, 0x1B, 0x01, 0xB2, 0x1B, 0x31, 0xB5,
+    0x1B, 0x61, 0xB8, 0x1B, 0x91, 0xBB, 0x1B, 0xC1, 0xBE, 0x1B, 0xF1, 0xC1, 0x1C, 0x21, 0xC4, 0x1C, 0x51, 0xC7, 0x1C, 0x81, 0xCA, 0x1C, 0xB1, 0xCD,
+    0x1C, 0xE1, 0xD0, 0x1D, 0x11, 0xD3, 0x1D, 0x41, 0xD6, 0x1D, 0x71, 0xD9, 0x1D, 0xA1, 0xDC, 0x1D, 0xD1, 0xDF, 0x1E, 0x01, 0xE1, 0x1E, 0x31, 0xE4,
+    0x1E, 0x61, 0xE7, 0x1E, 0x91, 0xEA, 0x1E, 0xC1, 0xED, 0x1E, 0xF1, 0xF0, 0x1F, 0x21, 0xF3, 0x1F, 0x51, 0xF6, 0x1F, 0x81, 0xF9, 0x1F, 0xB1, 0xFC,
+    0x1F, 0xE1, 0xFF, 0x20, 0x12, 0x02, 0x20, 0x42, 0x05, 0x20, 0x72, 0x08, 0x20, 0xA2, 0x0B, 0x20, 0xD2, 0x0E, 0x21, 0x02, 0x11, 0x21, 0x22, 0x14,
+    0x21, 0x52, 0x17, 0x21, 0x82, 0x1A, 0x21, 0xB2, 0x1D, 0x21, 0xE2, 0x20, 0x22, 0x12, 0x23, 0x22, 0x42, 0x26, 0x22, 0x72, 0x29, 0x22, 0xA2, 0x2C,
+    0x22, 0xD2, 0x2F, 0x23, 0x02, 0x31, 0x23, 0x32, 0x34, 0x23, 0x62, 0x37, 0x23, 0x92, 0x3A, 0x23, 0xC2, 0x3D, 0x23, 0xF2, 0x40, 0x24, 0x22, 0x43,
+    0x24, 0x52, 0x46, 0x24, 0x82, 0x49, 0x24, 0xA2, 0x4C, 0x24, 0xD2, 0x4F, 0x25, 0x02, 0x52, 0x25, 0x32, 0x55, 0x25, 0x62, 0x58, 0x25, 0x92, 0x5B,
+    0x25, 0xC2, 0x5D, 0x25, 0xF2, 0x60, 0x26, 0x22, 0x63, 0x26, 0x52, 0x66, 0x26, 0x82, 0x69, 0x26, 0xB2, 0x6C, 0x26, 0xE2, 0x6F, 0x27, 0x02, 0x72,
+    0x27, 0x32, 0x75, 0x27, 0x62, 0x78, 0x27, 0x92, 0x7B, 0x27, 0xC2, 0x7E, 0x27, 0xF2, 0x80, 0x28, 0x22, 0x83, 0x28, 0x52, 0x86, 0x28, 0x82, 0x89,
+    0x28, 0xB2, 0x8C, 0x28, 0xE2, 0x8F, 0x29, 0x02, 0x92, 0x29, 0x32, 0x95, 0x29, 0x62, 0x98, 0x29, 0x92, 0x9B, 0x29, 0xC2, 0x9D, 0x29, 0xF2, 0xA0,
+    0x2A, 0x22, 0xA3, 0x2A, 0x52, 0xA6, 0x2A, 0x82, 0xA9, 0x2A, 0xA2, 0xAC, 0x2A, 0xD2, 0xAF, 0x2B, 0x02, 0xB2, 0x2B, 0x32, 0xB5, 0x2B, 0x62, 0xB7,
+    0x2B, 0x92, 0xBA, 0x2B, 0xC2, 0xBD, 0x2B, 0xF2, 0xC0, 0x2C, 0x12, 0xC3, 0x2C, 0x42, 0xC6, 0x2C, 0x72, 0xC9, 0x2C, 0xA2, 0xCB, 0x2C, 0xD2, 0xCE,
+    0x2D, 0x02, 0xD1, 0x2D, 0x32, 0xD4, 0x2D, 0x62, 0xD7, 0x2D, 0x82, 0xDA, 0x2D, 0xB2, 0xDD, 0x2D, 0xE2, 0xE0, 0x2E, 0x12, 0xE2, 0x2E, 0x42, 0xE5,
+    0x2E, 0x72, 0xE8, 0x2E, 0x92, 0xEB, 0x2E, 0xC2, 0xEE, 0x2E, 0xF2, 0xF1, 0x2F, 0x22, 0xF3, 0x2F, 0x52, 0xF6, 0x2F, 0x82, 0xF9, 0x2F, 0xB2, 0xFC,
+    0x2F, 0xD2, 0xFF, 0x30, 0x03, 0x02, 0x30, 0x33, 0x04, 0x30, 0x63, 0x07, 0x30, 0x93, 0x0A, 0x30, 0xC3, 0x0D, 0x30, 0xE3, 0x10, 0x31, 0x13, 0x13,
+    0x31, 0x43, 0x15, 0x31, 0x73, 0x18, 0x31, 0xA3, 0x1B, 0x31, 0xC3, 0x1E, 0x31, 0xF3, 0x21, 0x32, 0x23, 0x23, 0x32, 0x53, 0x26, 0x32, 0x83, 0x29,
+    0x32, 0xA3, 0x2C, 0x32, 0xD3, 0x2F, 0x33, 0x03, 0x31, 0x33, 0x33, 0x34, 0x33, 0x63, 0x37, 0x33, 0x83, 0x3A, 0x33, 0xB3, 0x3D, 0x33, 0xE3, 0x3F,
+    0x34, 0x13, 0x42, 0x34, 0x43, 0x45, 0x34, 0x63, 0x48, 0x34, 0x93, 0x4B, 0x34, 0xC3, 0x4D, 0x34, 0xF3, 0x50, 0x35, 0x23, 0x53, 0x35, 0x43, 0x56,
+    0x35, 0x73, 0x58, 0x35, 0xA3, 0x5B, 0x35, 0xD3, 0x5E, 0x35, 0xF3, 0x61, 0x36, 0x23, 0x64, 0x36, 0x53, 0x66, 0x36, 0x83, 0x69, 0x36, 0xA3, 0x6C,
+    0x36, 0xD3, 0x6F, 0x37, 0x03, 0x71, 0x37, 0x33, 0x74, 0x37, 0x53, 0x77, 0x37, 0x83, 0x7A, 0x37, 0xB3, 0x7C, 0x37, 0xE3, 0x7F, 0x38, 0x03, 0x82,
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+    0x7A, 0xA7, 0xAA, 0x7A, 0xA7, 0xAA, 0x7A, 0xB7, 0xAB, 0x7A, 0xB7, 0xAC, 0x7A, 0xC7, 0xAC, 0x7A, 0xD7, 0xAD, 0x7A, 0xD7, 0xAD, 0x7A, 0xE7, 0xAE,
+    0x7A, 0xE7, 0xAE, 0x7A, 0xF7, 0xAF, 0x7A, 0xF7, 0xB0, 0x7B, 0x07, 0xB0, 0x7B, 0x07, 0xB1, 0x7B, 0x17, 0xB1, 0x7B, 0x17, 0xB2, 0x7B, 0x27, 0xB2,
+    0x7B, 0x37, 0xB3, 0x7B, 0x37, 0xB3, 0x7B, 0x47, 0xB4, 0x7B, 0x47, 0xB4, 0x7B, 0x57, 0xB5, 0x7B, 0x57, 0xB5, 0x7B, 0x67, 0xB6, 0x7B, 0x67, 0xB6,
+    0x7B, 0x77, 0xB7, 0x7B, 0x77, 0xB7, 0x7B, 0x87, 0xB8, 0x7B, 0x87, 0xB8, 0x7B, 0x97, 0xB9, 0x7B, 0x97, 0xB9, 0x7B, 0x97, 0xBA, 0x7B, 0xA7, 0xBA,
+    0x7B, 0xA7, 0xBB, 0x7B, 0xB7, 0xBB, 0x7B, 0xB7, 0xBB, 0x7B, 0xC7, 0xBC, 0x7B, 0xC7, 0xBC, 0x7B, 0xD7, 0xBD, 0x7B, 0xD7, 0xBD, 0x7B, 0xD7, 0xBE,
+    0x7B, 0xE7, 0xBE, 0x7B, 0xE7, 0xBE, 0x7B, 0xF7, 0xBF, 0x7B, 0xF7, 0xBF, 0x7B, 0xF7, 0xC0, 0x7C, 0x07, 0xC0, 0x7C, 0x07, 0xC0, 0x7C, 0x17, 0xC1,
+    0x7C, 0x17, 0xC1, 0x7C, 0x17, 0xC2, 0x7C, 0x27, 0xC2, 0x7C, 0x27, 0xC2, 0x7C, 0x27, 0xC3, 0x7C, 0x37, 0xC3, 0x7C, 0x37, 0xC3, 0x7C, 0x37, 0xC4,
+    0x7C, 0x47, 0xC4, 0x7C, 0x47, 0xC4, 0x7C, 0x47, 0xC5, 0x7C, 0x57, 0xC5, 0x7C, 0x57, 0xC5, 0x7C, 0x57, 0xC6, 0x7C, 0x67, 0xC6, 0x7C, 0x67, 0xC6,
+    0x7C, 0x67, 0xC7, 0x7C, 0x77, 0xC7, 0x7C, 0x77, 0xC7, 0x7C, 0x77, 0xC7, 0x7C, 0x87, 0xC8, 0x7C, 0x87, 0xC8, 0x7C, 0x87, 0xC8, 0x7C, 0x87, 0xC8,
+    0x7C, 0x97, 0xC9, 0x7C, 0x97, 0xC9, 0x7C, 0x97, 0xC9, 0x7C, 0x97, 0xCA, 0x7C, 0xA7, 0xCA, 0x7C, 0xA7, 0xCA, 0x7C, 0xA7, 0xCA, 0x7C, 0xA7, 0xCA,
+    0x7C, 0xB7, 0xCB, 0x7C, 0xB7, 0xCB, 0x7C, 0xB7, 0xCB, 0x7C, 0xB7, 0xCB, 0x7C, 0xB7, 0xCC, 0x7C, 0xC7, 0xCC, 0x7C, 0xC7, 0xCC, 0x7C, 0xC7, 0xCC,
+    0x7C, 0xC7, 0xCC, 0x7C, 0xC7, 0xCD, 0x7C, 0xD7, 0xCD, 0x7C, 0xD7, 0xCD, 0x7C, 0xD7, 0xCD, 0x7C, 0xD7, 0xCD, 0x7C, 0xD7, 0xCD, 0x7C, 0xD7, 0xCE,
+    0x7C, 0xE7, 0xCE, 0x7C, 0xE7, 0xCE, 0x7C, 0xE7, 0xCE, 0x7C, 0xE7, 0xCE, 0x7C, 0xE7, 0xCE, 0x7C, 0xE7, 0xCE, 0x7C, 0xE7, 0xCE, 0x7C, 0xF7, 0xCF,
+    0x7C, 0xF7, 0xCF, 0x7C, 0xF7, 0xCF, 0x7C, 0xF7, 0xCF, 0x7C, 0xF7, 0xCF, 0x7C, 0xF7, 0xCF, 0x7C, 0xF7, 0xCF, 0x7C, 0xF7, 0xCF, 0x7C, 0xF7, 0xCF,
+    0x7C, 0xF7, 0xCF, 0x7C, 0xF7, 0xD0, 0x7D, 0x07, 0xD0, 0x7D, 0x07, 0xD0, 0x7D, 0x07, 0xD0, 0x7D, 0x07, 0xD0, 0x7D, 0x07, 0xD0, 0x7D, 0x07, 0xD0,
+    0x7D, 0x07, 0xD0, 0x7D, 0x07, 0xD0, 0x7D, 0x07, 0xD0, 0x7D, 0x07, 0xD0, 0x7D, 0x07, 0xD0, 0x7D, 0x07, 0xD0, 0x7D, 0x07, 0xD0, 0x7D, 0x07, 0xD0,
+};
+
+#endif

units/dac/_dac_init.c

@@ -0,0 +1,147 @@
+//
+// Created by MightyPork on 2018/02/03.
+//
+
+#include "platform.h"
+#include "unit_base.h"
+
+#define DAC_INTERNAL
+#include "_dac_internal.h"
+
+/** Allocate data structure and set defaults */
+error_t UDAC_preInit(Unit *unit)
+{
+    struct priv *priv = unit->data = calloc_ck(1, sizeof(struct priv));
+    if (priv == NULL) return E_OUT_OF_MEM;
+
+    for (int i = 0; i < 2; i++) {
+        priv->cfg.ch[i].buffered = true;
+        priv->cfg.ch[i].enable = true;
+        priv->cfg.ch[i].noise_level = 2;
+        priv->cfg.ch[i].noise_type = NOISE_NONE;
+
+        priv->ch[i].waveform = UDAC_WAVE_DC;
+        priv->ch[i].dc_level = 2047;
+
+        priv->ch[i].rectangle_ontime = 4096; // half
+        priv->ch[i].rectangle_high = 4095;
+        priv->ch[i].rectangle_low = 0;
+
+        priv->ch[i].counter = 0;
+        priv->ch[i].increment = 0; // stopped
+        priv->ch[i].phase = 0;
+    }
+
+    UDAC_SetFreq(unit, 0, 1000);
+    UDAC_SetFreq(unit, 1, 1000);
+
+    return E_SUCCESS;
+}
+
+/** Finalize unit set-up */
+error_t UDAC_init(Unit *unit)
+{
+    bool suc = true;
+    struct priv *priv = unit->data;
+
+    // copy noise config
+    priv->ch[0].noise_type = priv->cfg.ch[0].noise_type;
+    priv->ch[0].noise_level = priv->cfg.ch[0].noise_level;
+
+    priv->ch[1].noise_type = priv->cfg.ch[1].noise_type;
+    priv->ch[1].noise_level = priv->cfg.ch[1].noise_level;
+
+    // this may change for different devices
+    const Resource r_ch1 = R_PA4;
+    const Resource r_ch2 = R_PA5;
+
+    TRY(rsc_claim(unit, R_TIM6));
+    priv->TIMx = TIM6;
+
+    const bool e1 = priv->cfg.ch[0].enable;
+    const bool e2 = priv->cfg.ch[1].enable;
+
+    if (e1) {
+        TRY(rsc_claim(unit, r_ch1));
+    }
+
+    if (e2) {
+        TRY(rsc_claim(unit, r_ch2));
+    }
+
+    TRY(rsc_claim(unit, R_DAC1));
+
+    // ensure the peripheral is clean (this may be redundant)
+    __HAL_RCC_DAC1_FORCE_RESET();
+    __HAL_RCC_DAC1_RELEASE_RESET();
+
+    hw_periph_clock_enable(DAC1);
+    hw_periph_clock_enable(priv->TIMx);
+
+    GPIO_TypeDef *port;
+    uint32_t ll;
+    if (e1) {
+        assert_param(hw_pinrsc2ll(r_ch1, &port, &ll));
+        LL_GPIO_SetPinMode(port, ll, LL_GPIO_MODE_ANALOG);
+    }
+    if (e2) {
+        assert_param(hw_pinrsc2ll(r_ch1, &port, &ll));
+        LL_GPIO_SetPinMode(port, ll, LL_GPIO_MODE_ANALOG);
+    }
+
+    uint16_t presc = 1;
+
+    // presets... TODO pick the highest useable one (or find a new one)
+#if UDAC_TIM_FREQ_DIVIDER == 1
+    uint32_t count = PLAT_AHB_MHZ;
+#elif UDAC_TIM_FREQ_DIVIDER == 2
+    uint32_t count = PLAT_AHB_MHZ * 2;
+#elif UDAC_TIM_FREQ_DIVIDER == 4
+    uint32_t count = PLAT_AHB_MHZ * 4;
+#elif UDAC_TIM_FREQ_DIVIDER == 8
+    uint32_t count = PLAT_AHB_MHZ * 8;
+#else
+    #error "bad freq"
+#endif
+
+//    dbg("Presc %d, count %d", (int)presc, (int)count);
+
+    LL_TIM_SetPrescaler(priv->TIMx, (uint32_t) (presc - 1));
+    LL_TIM_SetAutoReload(priv->TIMx, count - 1);
+    LL_TIM_EnableARRPreload(priv->TIMx);
+    LL_TIM_GenerateEvent_UPDATE(priv->TIMx);
+
+    irqd_attach(priv->TIMx, UDAC_HandleIT, unit);
+    LL_TIM_EnableIT_UPDATE(priv->TIMx);
+
+    UDAC_Reconfigure(unit); // works with the timer - it should be inited already
+
+    // do not enbale counter initially - no need
+//    LL_TIM_EnableCounter(priv->TIMx);
+
+    return E_SUCCESS;
+}
+
+
+/** Tear down the unit */
+void UDAC_deInit(Unit *unit)
+{
+    struct priv *priv = unit->data;
+
+    // de-init peripherals
+    if (unit->status == E_SUCCESS ) {
+        LL_DAC_DeInit(DAC);
+        LL_TIM_DisableCounter(priv->TIMx);
+
+        hw_periph_clock_disable(DAC1);
+        hw_periph_clock_disable(priv->TIMx);
+
+        irqd_detach(priv->TIMx, UDAC_HandleIT);
+    }
+
+    // Release all resources, deinit pins
+    rsc_teardown(unit);
+
+    // Free memory
+    free_ck(unit->data);
+}

units/dac/_dac_internal.h

@@ -0,0 +1,111 @@
+//
+// Created by MightyPork on 2018/02/03.
+//
+
+#ifndef GEX_F072_DAC_INTERNAL_H
+#define GEX_F072_DAC_INTERNAL_H
+
+#ifndef DAC_INTERNAL
+#error bad include!
+#endif
+
+#include "unit_base.h"
+
+enum UDAC_Noise {
+    NOISE_NONE = 0b00, // 0
+    NOISE_WHITE = 0b01, // 1
+    NOISE_TRIANGLE = 0b10, // 2
+};
+
+enum UDAC_Waveform {
+    UDAC_WAVE_DC,
+    UDAC_WAVE_SINE,
+    UDAC_WAVE_TRIANGLE,
+    UDAC_WAVE_SAWTOOTH_UP,
+    UDAC_WAVE_SAWTOOTH_DOWN,
+    UDAC_WAVE_RECTANGLE,
+};
+
+struct udac_channel_cfg {
+    bool enable;
+    bool buffered;
+    enum UDAC_Noise noise_type;
+    uint8_t noise_level; // 0-11
+};
+
+// 0 - 1 MHz, 2-500k, 4-250k, 8-125k
+#define UDAC_TIM_FREQ_DIVIDER 8
+
+#define UDAC_INDEX_WIDTH 13 // corresponds to 8192 places
+#define UDAC_INDEX_SHIFT (32 - UDAC_INDEX_WIDTH)
+#define UDAC_MAX_INDEX   ((1 << UDAC_INDEX_WIDTH) - 1)
+#define UDAC_VALUE_COUNT (1 << UDAC_INDEX_WIDTH)
+
+extern const uint8_t LUT_sine_8192_quad_packed[];
+
+struct udac_channel_live {
+    enum UDAC_Noise noise_type;
+    uint8_t noise_level; // 0-11
+    enum UDAC_Waveform waveform;
+
+    uint16_t rectangle_ontime; // for rectangle wave, 0-8191
+    uint16_t rectangle_high;
+    uint16_t rectangle_low;
+    uint16_t dc_level; // for DC wave
+
+    uint32_t counter;
+    uint32_t increment;
+
+    // last set phase if the frequencies are the same
+    // - can be used for live frequency changes without reset (meaningful only with matching increment values)
+    uint16_t phase;
+    uint16_t last_index;
+    uint16_t last_value;
+};
+
+/** Private data structure */
+struct priv {
+    // settings
+    struct {
+        struct udac_channel_cfg ch[2];
+    } cfg;
+
+    // internal state
+    struct udac_channel_live ch[2];
+    TIM_TypeDef *TIMx; // timer used for the DDS function
+};
+
+/** Allocate data structure and set defaults */
+error_t UDAC_preInit(Unit *unit);
+
+/** Load from a binary buffer stored in Flash */
+void UDAC_loadBinary(Unit *unit, PayloadParser *pp);
+
+/** Write to a binary buffer for storing in Flash */
+void UDAC_writeBinary(Unit *unit, PayloadBuilder *pb);
+
+// ------------------------------------------------------------------------
+
+/** Parse a key-value pair from the INI file */
+error_t UDAC_loadIni(Unit *unit, const char *key, const char *value);
+
+/** Generate INI file section for the unit */
+void UDAC_writeIni(Unit *unit, IniWriter *iw);
+
+// ------------------------------------------------------------------------
+
+/** Finalize unit set-up */
+error_t UDAC_init(Unit *unit);
+
+/** Tear down the unit */
+void UDAC_deInit(Unit *unit);
+
+void UDAC_Reconfigure(Unit *unit);
+
+void UDAC_HandleIT(void *arg);
+
+error_t UDAC_SetFreq(Unit *unit, int channel, float freq);
+
+void UDAC_ToggleTimerIfNeeded(Unit *unit);
+
+#endif //GEX_F072_DAC_INTERNAL_H

units/dac/_dac_settings.c

@@ -0,0 +1,131 @@
+//
+// Created by MightyPork on 2018/02/03.
+//
+
+#include "platform.h"
+#include "unit_base.h"
+
+#define DAC_INTERNAL
+#include "_dac_internal.h"
+
+/** Load from a binary buffer stored in Flash */
+void UDAC_loadBinary(Unit *unit, PayloadParser *pp)
+{
+    struct priv *priv = unit->data;
+
+    uint8_t version = pp_u8(pp);
+    (void)version;
+
+    priv->cfg.ch[0].enable = pp_bool(pp);
+    priv->cfg.ch[0].buffered = pp_bool(pp);
+    priv->cfg.ch[0].noise_type = (enum UDAC_Noise) pp_u8(pp);
+    priv->cfg.ch[0].noise_level = pp_u8(pp);
+
+    priv->cfg.ch[1].enable = pp_bool(pp);
+    priv->cfg.ch[1].buffered = pp_bool(pp);
+    priv->cfg.ch[1].noise_type = (enum UDAC_Noise) pp_u8(pp);
+    priv->cfg.ch[1].noise_level = pp_u8(pp);
+}
+
+/** Write to a binary buffer for storing in Flash */
+void UDAC_writeBinary(Unit *unit, PayloadBuilder *pb)
+{
+    struct priv *priv = unit->data;
+
+    pb_u8(pb, 0); // version
+
+    pb_bool(pb, priv->cfg.ch[0].enable);
+    pb_bool(pb, priv->cfg.ch[0].buffered);
+    pb_u8(pb, priv->cfg.ch[0].noise_type);
+    pb_u8(pb, priv->cfg.ch[0].noise_level);
+
+    pb_bool(pb, priv->cfg.ch[1].enable);
+    pb_bool(pb, priv->cfg.ch[1].buffered);
+    pb_u8(pb, priv->cfg.ch[1].noise_type);
+    pb_u8(pb, priv->cfg.ch[1].noise_level);
+}
+
+// ------------------------------------------------------------------------
+
+/** Parse a key-value pair from the INI file */
+error_t UDAC_loadIni(Unit *unit, const char *key, const char *value)
+{
+    bool suc = true;
+    struct priv *priv = unit->data;
+
+    // Ch1
+    if (streq(key, "ch1_enable")) {
+        priv->cfg.ch[0].enable = cfg_bool_parse(value, &suc);
+    }
+    else if (streq(key, "ch1_buff")) {
+        priv->cfg.ch[0].buffered = cfg_bool_parse(value, &suc);
+    }
+    else if (streq(key, "ch1_noise")) {
+        priv->cfg.ch[0].noise_type =
+            (enum UDAC_Noise) cfg_enum3_parse(value,
+                                             "NONE", NOISE_NONE,
+                                             "WHITE", NOISE_WHITE,
+                                             "TRIANGLE", NOISE_TRIANGLE, &suc);
+    }
+    else if (streq(key, "ch1_noise-level")) {
+        uint8_t x = cfg_u8_parse(value, &suc);
+        if (x == 0) x = 1;
+        if (x > 12) x = 12;
+        priv->cfg.ch[0].noise_level = (uint8_t) (x - 1);
+    }
+    // Ch2
+    else if (streq(key, "ch2_enable")) {
+        priv->cfg.ch[1].enable = cfg_bool_parse(value, &suc);
+    }
+    else if (streq(key, "ch2_buff")) {
+        priv->cfg.ch[1].buffered = cfg_bool_parse(value, &suc);
+    }
+    else if (streq(key, "ch2_noise")) {
+        priv->cfg.ch[1].noise_type =
+            (enum UDAC_Noise) cfg_enum3_parse(value,
+                                              "NONE", NOISE_NONE,
+                                              "WHITE", NOISE_WHITE,
+                                              "TRIANGLE", NOISE_TRIANGLE, &suc);
+    }
+    else if (streq(key, "ch2_noise-level")) {
+        uint8_t x = cfg_u8_parse(value, &suc);
+        if (x == 0) x = 1;
+        if (x > 12) x = 12;
+        priv->cfg.ch[1].noise_level = (uint8_t) (x - 1);
+    }
+    // end
+    else {
+        return E_BAD_KEY;
+    }
+
+    if (!suc) return E_BAD_VALUE;
+    return E_SUCCESS;
+}
+
+/** Generate INI file section for the unit */
+void UDAC_writeIni(Unit *unit, IniWriter *iw)
+{
+    struct priv *priv = unit->data;
+
+    iw_comment(iw, "Enabled channels (1:A4, 2:A5)");
+    iw_entry_s(iw, "ch1_enable", str_yn(priv->cfg.ch[0].enable));
+    iw_entry_s(iw, "ch2_enable", str_yn(priv->cfg.ch[1].enable));
+
+    iw_comment(iw, "Enable output buffer");
+    iw_entry_s(iw, "ch1_buff", str_yn(priv->cfg.ch[0].buffered));
+    iw_entry_s(iw, "ch2_buff", str_yn(priv->cfg.ch[1].buffered));
+
+    iw_comment(iw, "Superimposed noise type (NONE,WHITE,TRIANGLE) and nbr. of bits (1-12)");
+
+    iw_entry_s(iw, "ch1_noise", cfg_enum3_encode(priv->cfg.ch[0].noise_type,
+                                                 NOISE_NONE, "NONE",
+                                                 NOISE_WHITE, "WHITE",
+                                                 NOISE_TRIANGLE, "TRIANGLE"));
+    iw_entry_d(iw, "ch1_noise-level", priv->cfg.ch[0].noise_level + 1);
+
+    iw_entry_s(iw, "ch2_noise", cfg_enum3_encode(priv->cfg.ch[1].noise_type,
+                                                 NOISE_NONE, "NONE",
+                                                 NOISE_WHITE, "WHITE",
+                                                 NOISE_TRIANGLE, "TRIANGLE"));
+    iw_entry_d(iw, "ch2_noise-level", priv->cfg.ch[1].noise_level + 1);
+}

units/dac/unit_dac.c

@@ -0,0 +1,166 @@
+//
+// Created by MightyPork on 2017/11/25.
+//
+
+#include "unit_base.h"
+#include "unit_dac.h"
+
+#define DAC_INTERNAL
+#include "_dac_internal.h"
+
+// ------------------------------------------------------------------------
+
+// Works OK up to about 20 kHz, could work faster with a faster interrupt
+// (may be possible with some optimizations / adjusting priorities...)
+
+enum DacCmd_ {
+    CMD_WAVE_DC = 0,
+    CMD_WAVE_SINE = 1,
+    CMD_WAVE_TRIANGLE = 2,
+    CMD_WAVE_SAWTOOTH_UP = 3,
+    CMD_WAVE_SAWTOOTH_DOWN = 4,
+    CMD_WAVE_RECTANGLE = 5,
+
+    CMD_SYNC = 10,
+
+    CMD_SET_FREQUENCY = 20,
+    CMD_SET_PHASE = 21,
+    CMD_SET_DITHER = 22,
+};
+
+/** Handle a request message */
+static error_t UDAC_handleRequest(Unit *unit, TF_ID frame_id, uint8_t command, PayloadParser *pp)
+{
+    struct priv *priv = unit->data;
+
+    // Exceptions that aren't per-channel
+    switch (command) {
+        case CMD_SYNC:
+            dbg("Sync");
+            priv->ch[0].counter = priv->ch[0].phase << UDAC_INDEX_SHIFT;
+            priv->ch[1].counter = priv->ch[1].phase << UDAC_INDEX_SHIFT;
+            return E_SUCCESS;
+    }
+
+    uint8_t channels = pp_u8(pp);
+
+    bool want_reinit = false;
+    bool want_tog_timer = false;
+
+    // TODO move this stuff to the api file
+
+    for (int i = 0; i < 2; i++) {
+        if (channels & (1<<i)) {
+            switch (command) {
+                case CMD_SET_FREQUENCY:;
+                    float freq = pp_float(pp);
+                    TRY(UDAC_SetFreq(unit, i, freq));
+                    break;
+
+                case CMD_WAVE_DC:
+                    priv->ch[i].dc_level = pp_u16(pp);
+                    priv->ch[i].waveform = UDAC_WAVE_DC;
+                    want_tog_timer = true;
+                    break;
+
+                case CMD_WAVE_SINE:
+                    priv->ch[i].waveform = UDAC_WAVE_SINE;
+                    want_tog_timer = true;
+                    break;
+
+                case CMD_WAVE_TRIANGLE:
+                    priv->ch[i].waveform = UDAC_WAVE_TRIANGLE;
+                    want_tog_timer = true;
+                    break;
+
+                case CMD_WAVE_SAWTOOTH_UP:
+                    priv->ch[i].waveform = UDAC_WAVE_SAWTOOTH_UP;
+                    want_tog_timer = true;
+                    break;
+
+                case CMD_WAVE_SAWTOOTH_DOWN:
+                    priv->ch[i].waveform = UDAC_WAVE_SAWTOOTH_DOWN;
+                    want_tog_timer = true;
+                    break;
+
+                case CMD_WAVE_RECTANGLE:;
+                    uint16_t ontime = pp_u16(pp);
+                    uint16_t high = pp_u16(pp);
+                    uint16_t low = pp_u16(pp);
+
+                    // use 0xFFFF to skip setting the value
+                    if (high < 4096) priv->ch[i].rectangle_high = high;
+                    if (low < 4096) priv->ch[i].rectangle_low = low;
+                    if (ontime <= UDAC_VALUE_COUNT) priv->ch[i].rectangle_ontime = ontime;
+
+//                    dbg("Set rect hi %d, low %d", (int)priv->ch[i].rectangle_high, (int)priv->ch[i].rectangle_low);
+
+                    priv->ch[i].waveform = UDAC_WAVE_RECTANGLE;
+                    want_tog_timer = true;
+                    break;
+
+                case CMD_SET_PHASE:;
+                    uint16_t ph = pp_u16(pp);
+                    uint32_t newphase = ph << UDAC_INDEX_SHIFT;
+                    uint32_t oldphase = priv->ch[i].phase << UDAC_INDEX_SHIFT;
+                    int32_t diff = newphase - oldphase;
+                    priv->ch[i].counter += diff;
+                    priv->ch[i].phase = ph;
+                    break;
+
+                case CMD_SET_DITHER:;
+                    uint8_t noisetype = pp_u8(pp); // 0-none, 1-random, 2-triangle
+                    uint8_t noisebits = pp_u8(pp);
+
+                    // type 0xFF = not set
+                    if (noisetype <= 2) {
+                        priv->ch[i].noise_type = (enum UDAC_Noise) noisetype;
+                    }
+
+                    // bits 0xFF = not set
+                    if (noisebits >= 1 && noisebits <= 12) {
+                        priv->ch[i].noise_level = (uint8_t) (noisebits - 1);
+                    }
+
+//                    dbg("Ch %d: Dither type %d, level %d", i,
+//                        (int)priv->ch[i].noise_type,
+//                        (int)priv->ch[i].noise_level);
+
+                    want_reinit = true;
+                    break;
+
+                default:
+                    return E_UNKNOWN_COMMAND;
+            }
+        }
+    }
+
+    if (want_reinit) {
+        UDAC_Reconfigure(unit);
+    }
+
+    if (want_tog_timer) {
+        UDAC_ToggleTimerIfNeeded(unit);
+    }
+
+    return E_SUCCESS;
+}
+
+// ------------------------------------------------------------------------
+
+/** Unit template */
+const UnitDriver UNIT_DAC = {
+    .name = "DAC",
+    .description = "Two-channel analog output with waveforms",
+    // Settings
+    .preInit = UDAC_preInit,
+    .cfgLoadBinary = UDAC_loadBinary,
+    .cfgWriteBinary = UDAC_writeBinary,
+    .cfgLoadIni = UDAC_loadIni,
+    .cfgWriteIni = UDAC_writeIni,
+    // Init
+    .init = UDAC_init,
+    .deInit = UDAC_deInit,
+    // Function
+    .handleRequest = UDAC_handleRequest,
+};

units/dac/unit_dac.h

@@ -0,0 +1,16 @@
+//
+// Created by MightyPork on 2017/11/25.
+//
+// Digital input unit; single or multiple pin read access on one port (A-F)
+//
+
+#ifndef U_DAC_H
+#define U_DAC_H
+
+#include "unit.h"
+
+extern const UnitDriver UNIT_DAC;
+
+// UU_ prototypes
+
+#endif //U_DAC_H

units/digital_out/_dout_api.c

@@ -7,8 +7,20 @@
 #include "unit_dout.h"
 
 #define DOUT_INTERNAL
+
 #include "_dout_internal.h"
 
+static void clear_pulse_by_mask(struct priv *priv, uint16_t spread)
+{
+    assert_param(priv);
+
+    for (int i = 0; i < 16; i++) {
+        if (spread & (1 << i)) {
+            priv->msec_pulse_cnt[i] = 0;
+        }
+    }
+}
+
 error_t UU_DOut_Write(Unit *unit, uint16_t packed)
 {
     CHECK_TYPE(unit, &UNIT_DOUT);
@@ -16,6 +28,7 @@ error_t UU_DOut_Write(Unit *unit, uint16_t packed)
     struct priv *priv = unit->data;
     uint16_t mask = priv->pins;
     uint16_t spread = pinmask_spread(packed, mask);
+    clear_pulse_by_mask(priv, spread);
 
     uint16_t set = spread;
     uint16_t reset = ((~spread) & mask);
@@ -30,6 +43,7 @@ error_t UU_DOut_Set(Unit *unit, uint16_t packed)
     struct priv *priv = unit->data;
     uint16_t mask = priv->pins;
     uint16_t spread = pinmask_spread(packed, mask);
+    clear_pulse_by_mask(priv, spread);
 
     priv->port->BSRR = spread;
     return E_SUCCESS;
@@ -42,8 +56,9 @@ error_t UU_DOut_Clear(Unit *unit, uint16_t packed)
     struct priv *priv = unit->data;
     uint16_t mask = priv->pins;
     uint16_t spread = pinmask_spread(packed, mask);
+    clear_pulse_by_mask(priv, spread);
 
-    priv->port->BSRR = (spread<<16);
+    priv->port->BSRR = (spread << 16);
     return E_SUCCESS;
 }
 
@@ -54,11 +69,12 @@ error_t UU_DOut_Toggle(Unit *unit, uint16_t packed)
     struct priv *priv = unit->data;
     uint16_t mask = priv->pins;
     uint16_t spread = pinmask_spread(packed, mask);
+    clear_pulse_by_mask(priv, spread);
 
     uint16_t flipped = (uint16_t) (~priv->port->ODR) & mask;
     uint16_t set = flipped & spread;
     uint16_t reset = ((~flipped) & mask) & spread;
-    priv->port->BSRR = set | (reset<<16);
+    priv->port->BSRR = set | (reset << 16);
     return E_SUCCESS;
 }
 
@@ -68,6 +84,90 @@ error_t UU_DOut_GetPinCount(Unit *unit, uint8_t *count)
     struct priv *priv = unit->data;
 
     uint32_t packed = pinmask_pack(0xFFFF, priv->pins);
-    *count = (uint8_t)(32 - __CLZ(packed));
+    *count = (uint8_t) (32 - __CLZ(packed));
     return E_SUCCESS;
 }
+
+error_t UU_DOut_Pulse(Unit *unit, uint16_t packed, bool polarity, bool is_usec, uint16_t count)
+{
+    CHECK_TYPE(unit, &UNIT_DOUT);
+    struct priv *priv = unit->data;
+    assert_param(priv);
+
+    uint16_t mask = priv->pins;
+    uint16_t spread = pinmask_spread(packed, mask);
+    clear_pulse_by_mask(priv, spread);
+
+    vPortEnterCritical();
+
+    if (is_usec) {
+        // we're gonna do this right here as a delay loop.
+        if (count >= 1000) {
+            // too long, fall back to msec
+            count /= 1000;
+            is_usec = false;
+        }
+        else {
+            const uint32_t bsrr1 = spread << (polarity ? 0 : 16);
+            const uint32_t bsrr0 = spread << (polarity ? 16 : 0);
+
+            const uint32_t start = PTIM_MicroDelayAlign();
+            priv->port->BSRR = bsrr1;
+            PTIM_MicroDelayAligned(count, start);
+            priv->port->BSRR = bsrr0;
+        }
+    }
+
+    if (!is_usec) {
+        // Load the counters
+        for (int i = 0; i < 16; i++) {
+            if (spread & (1 << i)) {
+                priv->msec_pulse_cnt[i] = (uint16_t) (count + 1);
+            }
+        }
+
+        if (polarity) {
+            priv->msec_pulse_scheduled_1 |= spread;
+        } else {
+            priv->msec_pulse_scheduled_0 |= spread;
+        }
+
+        unit->_tick_cnt = 0;
+        unit->tick_interval = 1;
+    }
+
+    vPortExitCritical();
+
+    return E_SUCCESS;
+}
+
+void DOut_Tick(Unit *unit)
+{
+    struct priv *priv = unit->data;
+
+    uint16_t odr = (uint16_t) priv->port->ODR;
+    int live_cnt = 0;
+    for (int i = 0; i < 16; i++) {
+        if (priv->msec_pulse_scheduled_1 & (1<<i)) {
+            odr |= (1<<i);
+        } else if (priv->msec_pulse_scheduled_0 & (1<<i)) {
+            odr &= ~(1<<i);
+        }
+
+        if (priv->msec_pulse_cnt[i] > 0) {
+            live_cnt++;
+            priv->msec_pulse_cnt[i]--;
+            if (priv->msec_pulse_cnt[i] == 0) {
+                odr ^= 1 << i;
+            }
+        }
+    }
+    priv->port->ODR = odr;
+    priv->msec_pulse_scheduled_1 = 0;
+    priv->msec_pulse_scheduled_0 = 0;
+
+    if (live_cnt == 0) {
+        unit->_tick_cnt = 0;
+        unit->tick_interval = 0;
+    }
+}

units/digital_out/_dout_internal.h

@@ -19,6 +19,9 @@ struct priv {
     uint16_t open_drain; // open drain pins
 
     GPIO_TypeDef *port;
+    uint16_t msec_pulse_cnt[16];
+    uint16_t msec_pulse_scheduled_1;
+    uint16_t msec_pulse_scheduled_0;
 };
 
 /** Allocate data structure and set defaults */
@@ -46,4 +49,6 @@ error_t DOut_init(Unit *unit);
 /** Tear down the unit */
 void DOut_deInit(Unit *unit);
 
+void DOut_Tick(Unit *unit);
+
 #endif //GEX_F072_DOUT_INTERNAL_H

units/digital_out/unit_dout.c

@@ -9,10 +9,11 @@
 #include "_dout_internal.h"
 
 enum PinCmd_ {
-    CMD_TEST = 0,
+    CMD_QUERY = 0,
     CMD_SET = 1,
     CMD_CLEAR = 2,
     CMD_TOGGLE = 3,
+    CMD_PULSE = 4,
 };
 
 /** Handle a request message */
@@ -21,7 +22,7 @@ static error_t DOut_handleRequest(Unit *unit, TF_ID frame_id, uint8_t command, P
     uint16_t packed = pp_u16(pp);
 
     switch (command) {
-        case CMD_TEST:
+        case CMD_QUERY:
             return UU_DOut_Write(unit, packed);
 
         case CMD_SET:
@@ -33,6 +34,12 @@ static error_t DOut_handleRequest(Unit *unit, TF_ID frame_id, uint8_t command, P
         case CMD_TOGGLE:
             return UU_DOut_Toggle(unit, packed);
 
+        case CMD_PULSE:;
+            bool polarity = pp_bool(pp);
+            bool is_usec = pp_bool(pp);
+            uint16_t count = pp_u16(pp);
+            return UU_DOut_Pulse(unit, packed, polarity, is_usec, count);
+
         default:
             return E_UNKNOWN_COMMAND;
     }
@@ -55,4 +62,5 @@ const UnitDriver UNIT_DOUT = {
     .deInit = DOut_deInit,
     // Function
     .handleRequest = DOut_handleRequest,
+    .updateTick = DOut_Tick,
 };

units/digital_out/unit_dout.h

@@ -56,4 +56,16 @@ error_t UU_DOut_Toggle(Unit *unit, uint16_t packed);
  */
 error_t UU_DOut_GetPinCount(Unit *unit, uint8_t *count);
 
+/**
+ * Send a pulse
+ *
+ * @param unit
+ * @param packed - pins to pulse
+ * @param polarity - pulse active level
+ * @param is_usec - use usec precision (for < 1 ms)
+ * @param count - number of units (msec or usec)
+ * @return success
+ */
+error_t UU_DOut_Pulse(Unit *unit, uint16_t packed, bool polarity, bool is_usec, uint16_t count);
+
 #endif //U_DOUT_H

units/fcap/_fcap_core.c

@@ -2,7 +2,6 @@
 // Created by MightyPork on 2018/02/20.
 //
 
-#include <stm32f072xb.h>
 #include "platform.h"
 
 #define FCAP_INTERNAL

units/i2c/_i2c_init.c

@@ -62,7 +62,7 @@ error_t UI2C_init(Unit *unit)
     uint32_t af_i2c;
     uint32_t timing; // magic constant from CubeMX
 
-#if GEX_PLAT_F072_DISCOVERY
+#if STM32F072xB
     // scl - 6 or 8 for I2C1, 10 for I2C2
     // sda - 7 or 9 for I2C1, 11 for I2C2
     if (priv->periph_num == 1) {

units/i2c/_i2c_settings.c

@@ -77,7 +77,7 @@ void UI2C_writeIni(Unit *unit, IniWriter *iw)
     iw_entry_d(iw, "device", priv->periph_num);
 
     iw_comment(iw, "Pin mappings (SCL,SDA)");
-#if GEX_PLAT_F072_DISCOVERY
+#if STM32F072xB
     iw_comment(iw, " I2C1: (0) B6,B7    (1) B8,B9");
     iw_comment(iw, " I2C2: (0) B10,B11  (1) B13,B14");
 #elif GEX_PLAT_F103_BLUEPILL

units/i2c/unit_i2c.c

@@ -12,7 +12,7 @@
 #include "_i2c_internal.h"
 
 enum PinCmd_ {
-    CMD_TEST = 0,
+    CMD_QUERY = 0,
     CMD_READ = 1,
     CMD_WRITE_REG = 2,
     CMD_READ_REG = 3,
@@ -30,7 +30,7 @@ static error_t UI2C_handleRequest(Unit *unit, TF_ID frame_id, uint8_t command, P
 
     switch (command) {
         /** Write byte(s) - addr:u16, byte(s)  */
-        case CMD_TEST:
+        case CMD_QUERY:
             addr = pp_u16(pp);
             const uint8_t *bb = pp_tail(pp, &len);
 

units/sipo/unit_sipo.c

@@ -12,7 +12,7 @@
 // ------------------------------------------------------------------------
 
 enum SipoCmd_ {
-    CMD_WRITE = 0,
+    CMD_QUERY = 0,
     CMD_DIRECT_DATA = 1,
     CMD_DIRECT_SHIFT = 2,
     CMD_DIRECT_CLEAR = 3,
@@ -23,7 +23,7 @@ enum SipoCmd_ {
 static error_t USIPO_handleRequest(Unit *unit, TF_ID frame_id, uint8_t command, PayloadParser *pp)
 {
     switch (command) {
-        case CMD_WRITE:
+        case CMD_QUERY:
             {
                 uint32_t len;
                 uint16_t terminal_packed = pp_u16(pp);

units/spi/_spi_init.c

@@ -63,7 +63,7 @@ error_t USPI_init(Unit *unit)
     uint32_t af_spi;
 
     // TODO
-#if GEX_PLAT_F072_DISCOVERY
+#if STM32F072xB
     // SPI1 - many options
     // sck, miso, mosi, af
 
@@ -83,14 +83,14 @@ error_t USPI_init(Unit *unit)
             pin_miso = 4;
             pin_mosi = 5;
         }
-        else if (priv->remap == 2) {
-            // large packages only
-            spi_portname = 'E';
-            af_spi = LL_GPIO_AF_1;
-            pin_sck = 13;
-            pin_miso = 14;
-            pin_mosi = 15;
-        }
+//        else if (priv->remap == 2) {
+//            // large packages only
+//            spi_portname = 'E';
+//            af_spi = LL_GPIO_AF_1;
+//            pin_sck = 13;
+//            pin_miso = 14;
+//            pin_mosi = 15;
+//        }
         else {
             return E_BAD_CONFIG;
         }
@@ -104,14 +104,14 @@ error_t USPI_init(Unit *unit)
             pin_miso = 14;
             pin_mosi = 15;
         }
-        else if (priv->remap == 1) {
-            // NOTE: the's also a incomplete remap in PB and PC
-            spi_portname = 'D';
-            af_spi = LL_GPIO_AF_0;
-            pin_sck = 1;
-            pin_miso = 3;
-            pin_mosi = 4;
-        }
+//        else if (priv->remap == 1) {
+//            // NOTE: there's also an incomplete remap in PB and PC
+//            spi_portname = 'D';
+//            af_spi = LL_GPIO_AF_0;
+//            pin_sck = 1;
+//            pin_miso = 3;
+//            pin_mosi = 4;
+//        }
         else {
             return E_BAD_CONFIG;
         }

units/spi/_spi_settings.c

@@ -102,9 +102,9 @@ void USPI_writeIni(Unit *unit, IniWriter *iw)
 
     // TODO show a legend for peripherals and remaps
     iw_comment(iw, "Pin mappings (SCK,MISO,MOSI)");
-#if GEX_PLAT_F072_DISCOVERY
-    iw_comment(iw, " SPI1: (0) A5,A6,A7     (1) B3,B4,B5  (2) E13,E14,E15");
-    iw_comment(iw, " SPI2: (0) B13,B14,B15  (1) D1,D3,D4");
+#if STM32F072xB
+    iw_comment(iw, " SPI1: (0) A5,A6,A7     (1) B3,B4,B5"); //  (2) E13,E14,E15
+    iw_comment(iw, " SPI2: (0) B13,B14,B15"); //  (1) D1,D3,D4
 #elif GEX_PLAT_F103_BLUEPILL
     #error "NO IMPL"
 #elif GEX_PLAT_F303_DISCOVERY

units/spi/unit_spi.c

@@ -15,7 +15,7 @@
 // SPI master
 
 enum PinCmd_ {
-    CMD_TEST = 0,
+    CMD_QUERY = 0,
     CMD_MULTICAST = 1,
 };
 
@@ -33,7 +33,7 @@ static error_t USPI_handleRequest(Unit *unit, TF_ID frame_id, uint8_t command, P
 
     switch (command) {
         /** Write and read byte(s) - slave_num:u8, req_len:u16, resp_skip:u16, resp_len:u16, byte(s)  */
-        case CMD_TEST:
+        case CMD_QUERY:
             slave = pp_u8(pp);
             resp_skip = pp_u16(pp);
             resp_len = pp_u16(pp);

units/usart/_usart_init.c

@@ -111,7 +111,7 @@ static inline error_t UUSART_configPins(Unit *unit)
         want_rts_pin(priv)
     };
 
-#if GEX_PLAT_F072_DISCOVERY
+#if STM32F072xB
 
     const struct PinAF *mappings = NULL;
 

units/usart/_usart_settings.c

@@ -159,7 +159,7 @@ void UUSART_writeIni(Unit *unit, IniWriter *iw)
     iw_entry_d(iw, "device", priv->periph_num);
 
     iw_comment(iw, "Pin mappings (TX,RX,CK,CTS,RTS/DE)");
-#if GEX_PLAT_F072_DISCOVERY
+#if STM32F072xB
     iw_comment(iw, " USART1: (0) A9,A10,A8,A11,A12   (1) B6,B7,A8,A11,A12");
     iw_comment(iw, " USART2: (0) A2,A3,A4,A0,A1      (1) A14,A15,A4,A0,A1");
     iw_comment(iw, " USART3: (0) B10,B11,B12,B13,B14");

units/usart/unit_usart.c

@@ -92,7 +92,7 @@ void UUSART_Tick(Unit *unit)
 }
 
 enum PinCmd_ {
-    CMD_WRITE = 0,
+    CMD_QUERY = 0,
     CMD_WRITE_SYNC = 1,
 };
 
@@ -103,7 +103,7 @@ static error_t UUSART_handleRequest(Unit *unit, TF_ID frame_id, uint8_t command,
     const uint8_t *pld;
     switch (command) {
         /** Write bytes to the USART. Payload consists of the data to send. Waits for completion. */
-        case CMD_WRITE:
+        case CMD_QUERY:
             pld = pp_tail(pp, &len);
             TRY(UU_USART_Write(unit, pld, len));
             return E_SUCCESS;