From 9f40c6e4ddacdaea7776289e5782718350699718 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ond=C5=99ej=20Hru=C5=A1ka?= Date: Sun, 11 Mar 2018 00:04:54 +0100 Subject: [PATCH] DAC advanced features --- platform/hw_utils.c | 4 +- platform/irq_dispatcher.c | 2 +- units/dac/_dac_api.c | 62 +++++- units/dac/_dac_core.c | 392 ++++++++++++++++++++++++++++++++++++++ units/dac/_dac_init.c | 82 ++++++-- units/dac/_dac_internal.h | 52 ++++- units/dac/_dac_settings.c | 74 +++---- units/dac/unit_dac.c | 145 ++++++++++++-- units/fcap/_fcap_core.c | 1 - 9 files changed, 721 insertions(+), 93 deletions(-) create mode 100644 units/dac/_dac_core.c diff --git a/platform/hw_utils.c b/platform/hw_utils.c index abe745c..f470333 100644 --- a/platform/hw_utils.c +++ b/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(); diff --git a/platform/irq_dispatcher.c b/platform/irq_dispatcher.c index 01c357f..068e812 100644 --- a/platform/irq_dispatcher.c +++ b/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 (?) diff --git a/units/dac/_dac_api.c b/units/dac/_dac_api.c index a02559f..529f326 100644 --- a/units/dac/_dac_api.c +++ b/units/dac/_dac_api.c @@ -10,31 +10,75 @@ #include "_dac_internal.h" /** - * Re-configure the + * 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.ch1.enable) { + if (priv->cfg.ch[0].enable) { CR |= - (priv->cfg.ch1.buffered ? 0 : DAC_CR_BOFF1) | - (priv->cfg.ch1.noise_type << DAC_CR_WAVE1_Pos) | - (priv->cfg.ch1.noise_level & 0xF) << DAC_CR_MAMP1_Pos | + (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.ch2.enable) { + + if (priv->cfg.ch[1].enable) { CR |= - (priv->cfg.ch2.buffered ? 0 : DAC_CR_BOFF2) | - (priv->cfg.ch2.noise_type << DAC_CR_WAVE2_Pos) | - (priv->cfg.ch2.noise_level & 0xF) << DAC_CR_MAMP2_Pos | + (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); + } } diff --git a/units/dac/_dac_core.c b/units/dac/_dac_core.c new file mode 100644 index 0000000..5414a20 --- /dev/null +++ b/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, + 0x17, 0x71, 0x78, 0x17, 0xA1, 0x7B, 0x17, 0xD1, 0x7E, 0x18, 0x01, 0x81, 0x18, 0x31, 0x85, 0x18, 0x61, 0x88, 0x18, 0x91, 0x8B, 0x18, 0xC1, 0x8E, + 0x18, 0xF1, 0x91, 0x19, 0x21, 0x94, 0x19, 0x61, 0x97, 0x19, 0x91, 0x9A, 0x19, 0xC1, 0x9D, 0x19, 0xF1, 0xA0, 0x1A, 0x21, 0xA3, 0x1A, 0x51, 0xA6, + 0x1A, 0x81, 0xA9, 0x1A, 0xB1, 0xAD, 0x1A, 0xE1, 0xB0, 0x1B, 0x11, 0xB3, 0x1B, 0x41, 0xB6, 0x1B, 0x71, 0xB9, 0x1B, 0xA1, 0xBC, 0x1B, 0xD1, 0xBF, + 0x1C, 0x11, 0xC2, 0x1C, 0x41, 0xC5, 0x1C, 0x71, 0xC8, 0x1C, 0xA1, 0xCB, 0x1C, 0xD1, 0xCE, 0x1D, 0x01, 0xD1, 0x1D, 0x31, 0xD4, 0x1D, 0x61, 0xD7, + 0x1D, 0x91, 0xDB, 0x1D, 0xC1, 0xDE, 0x1D, 0xF1, 0xE1, 0x1E, 0x21, 0xE4, 0x1E, 0x51, 0xE7, 0x1E, 0x81, 0xEA, 0x1E, 0xB1, 0xED, 0x1E, 0xE1, 0xF0, + 0x1F, 0x11, 0xF3, 0x1F, 0x41, 0xF6, 0x1F, 0x71, 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, 0x32, 0x14, 0x21, 0x62, 0x17, 0x21, 0x92, 0x1A, 0x21, 0xC2, 0x1D, 0x21, 0xF2, 0x20, + 0x22, 0x22, 0x23, 0x22, 0x52, 0x26, 0x22, 0x82, 0x2A, 0x22, 0xB2, 0x2D, 0x22, 0xE2, 0x30, 0x23, 0x12, 0x33, 0x23, 0x42, 0x36, 0x23, 0x72, 0x39, + 0x23, 0xA2, 0x3C, 0x23, 0xD2, 0x3F, 0x24, 0x02, 0x42, 0x24, 0x32, 0x45, 0x24, 0x62, 0x48, 0x24, 0x92, 0x4B, 0x24, 0xC2, 0x4E, 0x24, 0xF2, 0x51, + 0x25, 0x22, 0x54, 0x25, 0x52, 0x57, 0x25, 0x82, 0x5A, 0x25, 0xB2, 0x5D, 0x25, 0xE2, 0x60, 0x26, 0x12, 0x63, 0x26, 0x42, 0x66, 0x26, 0x72, 0x69, + 0x26, 0xA2, 0x6C, 0x26, 0xD2, 0x6F, 0x27, 0x02, 0x72, 0x27, 0x32, 0x75, 0x27, 0x62, 0x78, 0x27, 0x92, 0x7B, 0x27, 0xC2, 0x7E, 0x27, 0xF2, 0x81, + 0x28, 0x22, 0x84, 0x28, 0x52, 0x87, 0x28, 0x82, 0x8A, 0x28, 0xB2, 0x8D, 0x28, 0xE2, 0x90, 0x29, 0x12, 0x92, 0x29, 0x42, 0x95, 0x29, 0x72, 0x98, + 0x29, 0xA2, 0x9B, 0x29, 0xD2, 0x9E, 0x2A, 0x02, 0xA1, 0x2A, 0x32, 0xA4, 0x2A, 0x62, 0xA7, 0x2A, 0x92, 0xAA, 0x2A, 0xC2, 0xAD, 0x2A, 0xF2, 0xB0, + 0x2B, 0x22, 0xB3, 0x2B, 0x52, 0xB6, 0x2B, 0x82, 0xB9, 0x2B, 0xA2, 0xBC, 0x2B, 0xD2, 0xBF, 0x2C, 0x02, 0xC2, 0x2C, 0x32, 0xC5, 0x2C, 0x62, 0xC8, + 0x2C, 0x92, 0xCB, 0x2C, 0xC2, 0xCE, 0x2C, 0xF2, 0xD1, 0x2D, 0x22, 0xD4, 0x2D, 0x52, 0xD6, 0x2D, 0x82, 0xD9, 0x2D, 0xB2, 0xDC, 0x2D, 0xE2, 0xDF, + 0x2E, 0x12, 0xE2, 0x2E, 0x42, 0xE5, 0x2E, 0x72, 0xE8, 0x2E, 0x92, 0xEB, 0x2E, 0xC2, 0xEE, 0x2E, 0xF2, 0xF1, 0x2F, 0x22, 0xF4, 0x2F, 0x52, 0xF7, + 0x2F, 0x82, 0xFA, 0x2F, 0xB2, 0xFC, 0x2F, 0xE2, 0xFF, 0x30, 0x13, 0x02, 0x30, 0x43, 0x05, 0x30, 0x73, 0x08, 0x30, 0xA3, 0x0B, 0x30, 0xC3, 0x0E, + 0x30, 0xF3, 0x11, 0x31, 0x23, 0x14, 0x31, 0x53, 0x17, 0x31, 0x83, 0x19, 0x31, 0xB3, 0x1C, 0x31, 0xE3, 0x1F, 0x32, 0x13, 0x22, 0x32, 0x43, 0x25, + 0x32, 0x73, 0x28, 0x32, 0x93, 0x2B, 0x32, 0xC3, 0x2E, 0x32, 0xF3, 0x31, 0x33, 0x23, 0x33, 0x33, 0x53, 0x36, 0x33, 0x83, 0x39, 0x33, 0xB3, 0x3C, + 0x33, 0xE3, 0x3F, 0x34, 0x03, 0x42, 0x34, 0x33, 0x45, 0x34, 0x63, 0x48, 0x34, 0x93, 0x4A, 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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, 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0xC7, 0x7C, 0x77, 0xD7, 0x7D, 0x77, 0xD7, 0x7E, 0x77, 0xE7, 0x7F, 0x77, 0xF7, 0x80, 0x78, 0x07, 0x80, + 0x78, 0x17, 0x81, 0x78, 0x27, 0x82, 0x78, 0x37, 0x83, 0x78, 0x37, 0x84, 0x78, 0x47, 0x85, 0x78, 0x57, 0x85, 0x78, 0x67, 0x86, 0x78, 0x77, 0x87, + 0x78, 0x87, 0x88, 0x78, 0x87, 0x89, 0x78, 0x97, 0x8A, 0x78, 0xA7, 0x8A, 0x78, 0xB7, 0x8B, 0x78, 0xC7, 0x8C, 0x78, 0xC7, 0x8D, 0x78, 0xD7, 0x8E, + 0x78, 0xE7, 0x8E, 0x78, 0xF7, 0x8F, 0x79, 0x07, 0x90, 0x79, 0x07, 0x91, 0x79, 0x17, 0x91, 0x79, 0x27, 0x92, 0x79, 0x37, 0x93, 0x79, 0x37, 0x94, + 0x79, 0x47, 0x94, 0x79, 0x57, 0x95, 0x79, 0x67, 0x96, 0x79, 0x67, 0x97, 0x79, 0x77, 0x97, 0x79, 0x87, 0x98, 0x79, 0x87, 0x99, 0x79, 0x97, 0x9A, + 0x79, 0xA7, 0x9A, 0x79, 0xB7, 0x9B, 0x79, 0xB7, 0x9C, 0x79, 0xC7, 0x9C, 0x79, 0xD7, 0x9D, 0x79, 0xD7, 0x9E, 0x79, 0xE7, 0x9E, 0x79, 0xF7, 0x9F, + 0x79, 0xF7, 0xA0, 0x7A, 0x07, 0xA0, 0x7A, 0x17, 0xA1, 0x7A, 0x17, 0xA2, 0x7A, 0x27, 0xA2, 0x7A, 0x37, 0xA3, 0x7A, 0x37, 0xA4, 0x7A, 0x47, 0xA4, + 0x7A, 0x57, 0xA5, 0x7A, 0x57, 0xA6, 0x7A, 0x67, 0xA6, 0x7A, 0x77, 0xA7, 0x7A, 0x77, 0xA7, 0x7A, 0x87, 0xA8, 0x7A, 0x87, 0xA9, 0x7A, 0x97, 0xA9, + 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 diff --git a/units/dac/_dac_init.c b/units/dac/_dac_init.c index 847cb6e..942f632 100644 --- a/units/dac/_dac_init.c +++ b/units/dac/_dac_init.c @@ -14,21 +14,26 @@ 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; - priv->cfg.ch1.buffered = true; - priv->cfg.ch1.enable = true; - priv->cfg.ch1.noise_level = 2; - priv->cfg.ch1.noise_type = NOISE_NONE; - - priv->ch1.noise_type = priv->cfg.ch1.noise_type; - priv->ch1.noise_level = priv->cfg.ch1.noise_level; - - priv->cfg.ch2.buffered = true; - priv->cfg.ch2.enable = true; - priv->cfg.ch2.noise_level = 2; - priv->cfg.ch2.noise_type = NOISE_NONE; + 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; + } - priv->ch2.noise_type = priv->cfg.ch2.noise_type; - priv->ch2.noise_level = priv->cfg.ch2.noise_level; + UDAC_SetFreq(unit, 0, 1000); + UDAC_SetFreq(unit, 1, 1000); return E_SUCCESS; } @@ -39,13 +44,22 @@ 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; - const bool e1 = priv->cfg.ch1.enable; - const bool e2 = priv->cfg.ch2.enable; + 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)); @@ -62,6 +76,7 @@ error_t UDAC_init(Unit *unit) __HAL_RCC_DAC1_RELEASE_RESET(); hw_periph_clock_enable(DAC1); + hw_periph_clock_enable(priv->TIMx); GPIO_TypeDef *port; uint32_t ll; @@ -74,7 +89,35 @@ error_t UDAC_init(Unit *unit) LL_GPIO_SetPinMode(port, ll, LL_GPIO_MODE_ANALOG); } - UDAC_Reconfigure(unit); + 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; } @@ -88,7 +131,12 @@ void UDAC_deInit(Unit *unit) // 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 diff --git a/units/dac/_dac_internal.h b/units/dac/_dac_internal.h index be376b2..69b7140 100644 --- a/units/dac/_dac_internal.h +++ b/units/dac/_dac_internal.h @@ -12,9 +12,18 @@ #include "unit_base.h" enum UDAC_Noise { - NOISE_NONE = 0b00, - NOISE_WHITE = 0b01, - NOISE_TRIANGLE = 0b10, + 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 { @@ -24,22 +33,45 @@ struct udac_channel_cfg { 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 ch1; - struct udac_channel_cfg ch2; + struct udac_channel_cfg ch[2]; } cfg; // internal state - struct udac_channel_live ch1; - struct udac_channel_live ch2; + struct udac_channel_live ch[2]; TIM_TypeDef *TIMx; // timer used for the DDS function }; @@ -70,4 +102,10 @@ 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 diff --git a/units/dac/_dac_settings.c b/units/dac/_dac_settings.c index bbef170..97b9d65 100644 --- a/units/dac/_dac_settings.c +++ b/units/dac/_dac_settings.c @@ -16,15 +16,15 @@ void UDAC_loadBinary(Unit *unit, PayloadParser *pp) uint8_t version = pp_u8(pp); (void)version; - priv->cfg.ch1.enable = pp_bool(pp); - priv->cfg.ch1.buffered = pp_bool(pp); - priv->cfg.ch1.noise_type = (enum UDAC_Noise) pp_u8(pp); - priv->cfg.ch1.noise_level = pp_u8(pp); - - priv->cfg.ch2.enable = pp_bool(pp); - priv->cfg.ch2.buffered = pp_bool(pp); - priv->cfg.ch2.noise_type = (enum UDAC_Noise) pp_u8(pp); - priv->cfg.ch2.noise_level = pp_u8(pp); + 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 */ @@ -34,15 +34,15 @@ void UDAC_writeBinary(Unit *unit, PayloadBuilder *pb) pb_u8(pb, 0); // version - pb_bool(pb, priv->cfg.ch1.enable); - pb_bool(pb, priv->cfg.ch1.buffered); - pb_u8(pb, priv->cfg.ch1.noise_type); - pb_u8(pb, priv->cfg.ch1.noise_level); + 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.ch2.enable); - pb_bool(pb, priv->cfg.ch2.buffered); - pb_u8(pb, priv->cfg.ch2.noise_type); - pb_u8(pb, priv->cfg.ch2.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); } // ------------------------------------------------------------------------ @@ -55,13 +55,13 @@ error_t UDAC_loadIni(Unit *unit, const char *key, const char *value) // Ch1 if (streq(key, "ch1_enable")) { - priv->cfg.ch1.enable = cfg_bool_parse(value, &suc); + priv->cfg.ch[0].enable = cfg_bool_parse(value, &suc); } else if (streq(key, "ch1_buff")) { - priv->cfg.ch1.buffered = cfg_bool_parse(value, &suc); + priv->cfg.ch[0].buffered = cfg_bool_parse(value, &suc); } else if (streq(key, "ch1_noise")) { - priv->cfg.ch1.noise_type = + priv->cfg.ch[0].noise_type = (enum UDAC_Noise) cfg_enum3_parse(value, "NONE", NOISE_NONE, "WHITE", NOISE_WHITE, @@ -71,17 +71,17 @@ error_t UDAC_loadIni(Unit *unit, const char *key, const char *value) uint8_t x = cfg_u8_parse(value, &suc); if (x == 0) x = 1; if (x > 12) x = 12; - priv->cfg.ch1.noise_level = (uint8_t) (x - 1); + priv->cfg.ch[0].noise_level = (uint8_t) (x - 1); } // Ch2 else if (streq(key, "ch2_enable")) { - priv->cfg.ch2.enable = cfg_bool_parse(value, &suc); + priv->cfg.ch[1].enable = cfg_bool_parse(value, &suc); } else if (streq(key, "ch2_buff")) { - priv->cfg.ch2.buffered = cfg_bool_parse(value, &suc); + priv->cfg.ch[1].buffered = cfg_bool_parse(value, &suc); } else if (streq(key, "ch2_noise")) { - priv->cfg.ch2.noise_type = + priv->cfg.ch[1].noise_type = (enum UDAC_Noise) cfg_enum3_parse(value, "NONE", NOISE_NONE, "WHITE", NOISE_WHITE, @@ -91,7 +91,7 @@ error_t UDAC_loadIni(Unit *unit, const char *key, const char *value) uint8_t x = cfg_u8_parse(value, &suc); if (x == 0) x = 1; if (x > 12) x = 12; - priv->cfg.ch2.noise_level = (uint8_t) (x - 1); + priv->cfg.ch[1].noise_level = (uint8_t) (x - 1); } // end else { @@ -108,24 +108,24 @@ 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.ch1.enable)); - iw_entry_s(iw, "ch2_enable", str_yn(priv->cfg.ch2.enable)); + 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, "Output buffering"); - iw_entry_s(iw, "ch1_buff", str_yn(priv->cfg.ch1.buffered)); - iw_entry_s(iw, "ch2_buff", str_yn(priv->cfg.ch2.buffered)); + 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)"); - iw_entry_s(iw, "ch1_noise", cfg_enum3_encode(priv->cfg.ch1.noise_type, + 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_s(iw, "ch2_noise", cfg_enum3_encode(priv->cfg.ch2.noise_type, + 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_comment(iw, "Noise amplitude (nbr. of bits,1-12)"); - iw_entry_d(iw, "ch1_noise-level", priv->cfg.ch1.noise_level + 1); - iw_entry_d(iw, "ch2_noise-level", priv->cfg.ch2.noise_level + 1); + iw_entry_d(iw, "ch2_noise-level", priv->cfg.ch[1].noise_level + 1); } diff --git a/units/dac/unit_dac.c b/units/dac/unit_dac.c index 9908204..856187d 100644 --- a/units/dac/unit_dac.c +++ b/units/dac/unit_dac.c @@ -10,33 +10,140 @@ // ------------------------------------------------------------------------ +// 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_SET_LEVEL, + 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) +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_SET_LEVEL: { - uint16_t ch1 = pp_u16(pp); - uint16_t ch2 = pp_u16(pp); - uint32_t dual_reg = DAC->DHR12RD; - if (ch1 != 0xFFFF) { - dual_reg = (dual_reg & 0xFFFF0000) | ch1; - } - if (ch2 != 0xFFFF) { - dual_reg = (dual_reg & 0xFFFF) | (ch2<<16); - } - DAC->DHR12RD = dual_reg; - // Trigger a conversion - DAC->SWTRIGR = (DAC_SWTR_CH1 | DAC_SWTR_CH2); + 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<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; + } } - default: - return E_UNKNOWN_COMMAND; } + + if (want_reinit) { + UDAC_Reconfigure(unit); + } + + if (want_tog_timer) { + UDAC_ToggleTimerIfNeeded(unit); + } + + return E_SUCCESS; } // ------------------------------------------------------------------------ @@ -44,7 +151,7 @@ static error_t UDAC_handleRequest(Unit *unit, TF_ID frame_id, uint8_t command, /** Unit template */ const UnitDriver UNIT_DAC = { .name = "DAC", - .description = "Analog output", + .description = "Two-channel analog output with waveforms", // Settings .preInit = UDAC_preInit, .cfgLoadBinary = UDAC_loadBinary, diff --git a/units/fcap/_fcap_core.c b/units/fcap/_fcap_core.c index c48fedc..3725394 100644 --- a/units/fcap/_fcap_core.c +++ b/units/fcap/_fcap_core.c @@ -2,7 +2,6 @@ // Created by MightyPork on 2018/02/20. // -#include #include "platform.h" #define FCAP_INTERNAL