added software timer instantiation + config (unused)

FreeRTOSConfig.h

@@ -109,6 +109,11 @@
 #define configCHECK_FOR_STACK_OVERFLOW           2
 #define configENABLE_BACKWARD_COMPATIBILITY      0
 
+#define configUSE_TIMERS                         1
+#define configTIMER_TASK_PRIORITY                4 // above normal
+#define configTIMER_TASK_STACK_DEPTH             128
+#define configTIMER_QUEUE_LENGTH                 4
+
 #define configTOTAL_HEAP_SIZE 4096
 
 /* Co-routine definitions. */

freertos.c

@@ -125,6 +125,21 @@ void vApplicationGetIdleTaskMemory( StaticTask_t **ppxIdleTaskTCBBuffer, StackTy
 }                   
 /* USER CODE END GET_IDLE_TASK_MEMORY */
 
+
+/* USER CODE BEGIN GET_IDLE_TASK_MEMORY */
+static StaticTask_t xTimersTaskTCBBuffer;
+static StackType_t xTimersStack[configTIMER_TASK_STACK_DEPTH];
+
+void vApplicationGetTimerTaskMemory( StaticTask_t **ppxTimersTaskTCBBuffer, StackType_t **ppxTimersTaskStackBuffer, uint32_t *pulTimersTaskStackSize )
+{
+  *ppxTimersTaskTCBBuffer = &xTimersTaskTCBBuffer;
+  *ppxTimersTaskStackBuffer = &xTimersStack[0];
+  *pulTimersTaskStackSize = configTIMER_TASK_STACK_DEPTH;
+  /* place for user code */
+}
+/* USER CODE END GET_IDLE_TASK_MEMORY */
+
+
 /* Init FreeRTOS */
 
 void MX_FREERTOS_Init(void) {

units/1wire/_ow_internal.h

@@ -19,6 +19,7 @@ struct priv {
 
     GPIO_TypeDef *port;
     uint32_t ll_pin;
+    TimerHandle_t busyWaitTimer; // timer used to wait for ds1820 measurement completion
 };
 
 // Prototypes

units/1wire/unit_1wire.c

@@ -76,12 +76,21 @@ static void U1WIRE_writeIni(Unit *unit, IniWriter *iw)
 
 // ------------------------------------------------------------------------
 
+static void U1WIRE_TimerCb(TimerHandle_t xTimer)
+{
+
+}
+
 /** Allocate data structure and set defaults */
 static error_t U1WIRE_preInit(Unit *unit)
 {
     struct priv *priv = unit->data = calloc_ck(1, sizeof(struct priv));
     if (priv == NULL) return E_OUT_OF_MEM;
 
+    // the timer is not started until needed
+    priv->busyWaitTimer = xTimerCreate("1w_tim", 750, false, unit, U1WIRE_TimerCb);
+    if (priv->busyWaitTimer == NULL) return E_OUT_OF_MEM;
+
     // some defaults
     priv->pin_number = 0;
     priv->port_name = 'A';
@@ -122,6 +131,9 @@ static void U1WIRE_deInit(Unit *unit)
     // Release all resources
     rsc_teardown(unit);
 
+    // Delete the software timer
+    assert_param(pdPASS == xTimerDelete(priv->busyWaitTimer, 1000));
+
     // Free memory
     free_ck(unit->data);
 }