reworked the indicator engine to better support patterns

USB/usbd_storage_if.c

@@ -223,7 +223,6 @@ int8_t  STORAGE_IsReady_FS (uint8_t lun)
 {
   /* USER CODE BEGIN 4 */
 //    dbg("STORAGE_IsReady_FS? %d", vfs_info.MediaReady);
-    StatusLed_Set(STATUS_DISK_ATTACHED, vfs_info.MediaReady);
 
     // Media change - no re-plug
     if (vfs_info.MediaChanged) {

cortex_handlers.c

@@ -29,7 +29,7 @@ void vApplicationStackOverflowHook(TaskHandle_t xTask, signed char *pcTaskName)
     configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2. This hook function is
     called if a stack overflow is detected. */
     PRINTF(tFAULT" RTOS stack overflow! tsk: %s\r\n", (char *) pcTaskName);
-    StatusLed_On(STATUS_FAULT);
+    Indicator_Effect(STATUS_FAULT);
 
     stackmon_dump();
     while (1);
@@ -178,7 +178,7 @@ void  __attribute__((naked)) HardFault_Handler(void)
 #endif
 
     PRINTF(tFAULT" HARD FAULT\r\n\r\n");
-    StatusLed_On(STATUS_FAULT);
+    Indicator_Effect(STATUS_FAULT);
     while (1);
 }
 

gex_hooks.c

@@ -16,7 +16,7 @@
 void GEX_MsTick(void)
 {
     TF_Tick(comm);
-    StatusLed_Tick();
+    Indicator_Tick();
 }
 
 /**
@@ -35,7 +35,7 @@ void GEX_PreInit(void)
     __HAL_RCC_GPIOF_CLK_ENABLE();
 #endif
 
-    StatusLed_PreInit();
+    Indicator_PreInit();
     DebugUart_PreInit();
 
     dbg("\r\n\033[37;1m*** GEX "GEX_VERSION" on "GEX_PLATFORM" ***\033[m");

platform/lock_jumper.c

@@ -12,6 +12,7 @@
 #include "framework/system_settings.h"
 #include "pin_utils.h"
 #include "lock_jumper.h"
+#include "status_led.h"
 
 static bool LockJumper_ReadPin(void);
 
@@ -61,9 +62,11 @@ static void jumper_changed(void)
     if (SystemSettings.editable) {
         // Unlock
         dbg("LOCK removed, enabling MSC!");
+        Indicator_Effect(STATUS_DISK_ATTACHED);
     } else {
         // Lock
         dbg("LOCK replaced, disabling MSC!");
+        Indicator_Effect(STATUS_DISK_REMOVED);
 
         if (SystemSettings.modified) {
             dbg("Saving settings to Flash...");

platform/plat_init.c

@@ -22,7 +22,7 @@ void plat_init(void)
     plat_init_resources(); // also registers unit drivers
 
     LockJumper_Init();
-    StatusLed_Init();
+    Indicator_Init();
     DebugUart_Init(); // <- only the resource claim
 
     dbg("Loading settings ...");

platform/status_led.c

@@ -7,13 +7,22 @@
 #include "status_led.h"
 #include "pin_utils.h"
 
-static uint32_t indicators[_INDICATOR_COUNT];
-
 static GPIO_TypeDef *led_periph;
 static uint32_t led_llpin;
 
+static uint32_t active_effect = STATUS_NONE;
+static uint32_t effect_time = 0;
+
+// counter of idle ticks since last indicator
+// used to allow or disallow heartbeat blink (to avoid interference)
+static uint32_t indicator_idle_ms = 0;
+#define IDLE_FOR_HEARTBEAT_MS 2500
+#define HB_MAX_SAFE_IVAL 500
+
+static uint32_t hb_elapsed = 0;
+
 /** Early init */
-void StatusLed_PreInit(void)
+void Indicator_PreInit(void)
 {
     bool suc = true;
     // Resolve pin
@@ -28,8 +37,18 @@ void StatusLed_PreInit(void)
     assert_param(suc);
 }
 
+static inline void led_on(void)
+{
+    LL_GPIO_SetOutputPin(led_periph, led_llpin);
+}
+
+static inline void led_off(void)
+{
+    LL_GPIO_ResetOutputPin(led_periph, led_llpin);
+}
+
 /** Set up the LED */
-void StatusLed_Init(void)
+void Indicator_Init(void)
 {
     bool suc = true;
 
@@ -42,55 +61,82 @@ void StatusLed_Init(void)
 }
 
 /** Set indicator ON */
-void StatusLed_On(enum GEX_StatusIndicator indicator)
+void Indicator_Effect(enum GEX_StatusIndicator indicator)
 {
-    indicators[indicator] = osWaitForever;
-
     if (indicator == STATUS_FAULT) {
-        // Persistent light
-        LL_GPIO_SetOutputPin(led_periph, led_llpin);
+        // Persistent light - start immediately
+        led_on();
     }
-}
 
-/** Set indicator OFF */
-void StatusLed_Off(enum GEX_StatusIndicator indicator)
-{
-    indicators[indicator] = 0;
-    // TODO some effect
+    active_effect = indicator;
+    effect_time = 0;
 }
 
-/** Set or reset a indicator */
-void StatusLed_Set(enum GEX_StatusIndicator indicator, bool set)
+void Indicator_Off(enum GEX_StatusIndicator indicator)
 {
-    if (set) {
-        StatusLed_On(indicator);
-    } else {
-        StatusLed_Off(indicator);
+    if (active_effect == indicator) {
+        led_off();
+        active_effect = STATUS_NONE;
+        indicator_idle_ms = 0;
     }
 }
 
-/** Turn indicator ON for a given interval */
-void StatusLed_Flash(enum GEX_StatusIndicator indicator, uint32_t ms)
-{
-    indicators[indicator] = ms;
-    // TODO
-}
-
 /** Millisecond tick */
-void StatusLed_Tick(void)
+void Indicator_Tick(void)
 {
-    for (uint32_t i = 0; i < _INDICATOR_COUNT; i++) {
-        if (indicators[i] != osWaitForever && indicators[i] != 0) {
-            if (--indicators[i]) {
-                StatusLed_Off((enum GEX_StatusIndicator) i);
+    if (active_effect == STATUS_NONE) {
+        indicator_idle_ms++;
+
+        if (hb_elapsed < HB_MAX_SAFE_IVAL && indicator_idle_ms > IDLE_FOR_HEARTBEAT_MS &&
+            (indicator_idle_ms % 10 == 0)) {
+            Indicator_Effect(STATUS_HEARTBEAT);
+        }
+    }
+
+    if (active_effect != STATUS_NONE) {
+        indicator_idle_ms = 0;
+
+        if (active_effect == STATUS_HEARTBEAT) {
+            if (effect_time == 0) led_on();
+            else if (effect_time == 50) {
+                led_off();
+                active_effect = STATUS_NONE;
             }
         }
+        else if (active_effect == STATUS_DISK_ATTACHED) {
+            if (effect_time == 0) led_on();
+            else if (effect_time == 100) led_off();
+            else if (effect_time == 200) led_on();
+            else if (effect_time == 700) {
+                led_off();
+                active_effect = STATUS_NONE;
+            }
+        }
+        else if (active_effect == STATUS_DISK_REMOVED) {
+            if (effect_time == 0) led_on();
+            else if (effect_time == 500) led_off();
+            else if (effect_time == 600) led_on();
+            else if (effect_time == 700) {
+                led_off();
+                active_effect = STATUS_NONE;
+            }
+        }
+        else if (active_effect == STATUS_DISK_BUSY) {
+            if (effect_time == 600) {
+                led_off();
+                active_effect = STATUS_NONE;
+            }
+            else if (effect_time % 200 == 0) led_on();
+            else if (effect_time % 200 == 100) led_off();
+        }
+
+        effect_time++;
     }
 }
 
 /** Heartbeat callback from the main thread */
-void StatusLed_Heartbeat(void)
+void Indicator_Heartbeat(void)
 {
-    // TODO fixme
-    LL_GPIO_TogglePin(led_periph, led_llpin);
+    hb_elapsed = 0;
+    // this is called every ~ 100 ms from the main loop
 }

platform/status_led.h

@@ -11,62 +11,47 @@
  * Indicator (LED or blinking pattern)
  */
 enum GEX_StatusIndicator {
-    STATUS_FAULT = 0,
-    STATUS_USB_CONN,
-    STATUS_USB_ACTIVITY,
+    STATUS_NONE = 0,
+    STATUS_FAULT,
     STATUS_DISK_BUSY,
     STATUS_DISK_ATTACHED,
+    STATUS_DISK_REMOVED,
+    STATUS_HEARTBEAT,
     _INDICATOR_COUNT
 };
 
 /**
  * Early init
  */
-void StatusLed_PreInit(void);
+void Indicator_PreInit(void);
 
 /**
  * Initialize the statis LED(s)
  */
-void StatusLed_Init(void);
+void Indicator_Init(void);
 
 /**
  * Set indicator ON
  *
  * @param indicator
  */
-void StatusLed_On(enum GEX_StatusIndicator indicator);
+void Indicator_Effect(enum GEX_StatusIndicator indicator);
 
 /**
  * Set indicator OFF
  *
  * @param indicator
  */
-void StatusLed_Off(enum GEX_StatusIndicator indicator);
-
-/**
- * Indicator set or reset
- *
- * @param indicator
- * @param set
- */
-void StatusLed_Set(enum GEX_StatusIndicator indicator, bool set);
-
-/**
- * Turn indicator ON for a given interval
- *
- * @param indicator
- * @param ms - time ON in ms
- */
-void StatusLed_Flash(enum GEX_StatusIndicator indicator, uint32_t ms);
+void Indicator_Off(enum GEX_StatusIndicator indicator);
 
 /**
  * Ms tick for indicators
  */
-void StatusLed_Tick(void);
+void Indicator_Tick(void);
 
 /**
  * Heartbeat callback from the main thread to indicate activity
  */
-void StatusLed_Heartbeat(void);
+void Indicator_Heartbeat(void);
 
 #endif //GEX_INDICATORS_H

stm32_assert.c

@@ -11,7 +11,7 @@ void __attribute__((noreturn)) abort_msg(const char *msg, const char *filename,
 {
     dbg("\r\n\033[31m%s:\033[m %s:%"PRIu32, msg, filename, line);
     vPortEnterCritical();
-    StatusLed_On(STATUS_FAULT);
+    Indicator_Effect(STATUS_FAULT);
     while(1);
 }
 

tasks/task_main.c

@@ -44,7 +44,7 @@ void TaskMain(void const * argument)
             startTime = now;
 
             cnt++;
-            if (cnt%5==0) StatusLed_Heartbeat();
+            Indicator_Heartbeat();
         }
 
         // if no message and it just timed out, go wait some more...

vfs/file_stream.c

@@ -112,7 +112,7 @@ error_t stream_open(stream_type_t stream_type)
         return E_INTERNAL;
     }
 
-    StatusLed_On(STATUS_DISK_BUSY);
+    Indicator_Effect(STATUS_DISK_BUSY);
     // TODO create a thread...?
 
     // Initialize all variables
@@ -178,7 +178,7 @@ error_t stream_close(void)
     // set only if stream_open has been called
 //    stream_thread_assert(); // ???
     // Close stream
-    StatusLed_Off(STATUS_DISK_BUSY);
+    Indicator_Off(STATUS_DISK_BUSY);
     status = current_stream->close(&shared_state);
     stream_state = STREAM_STATE_CLOSED;
     return status;