START/SYNC Function & Async RX functions

Author: PY1CX

ADS1220/ads1220.c

@@ -5,3 +5,63 @@
  *	Author: Felipe Navarro
  *
  */
+#include "ads1220.h"
+
+/*
+ *  Function to Start a new conversion on Single Shot Mode of ADS1220
+ */
+int8_t ADS1220_start_conversion(SemaphoreHandle_t * Mutex_SPI){
+
+	//Take SPI Semaphore before using the SPI
+	if( xSemaphoreTake( Mutex_SPI, (TickType_t) 5) == pdTRUE ){
+			HAL_GPIO_WritePin(CS_ADS1220_GPIO_Port , CS_ADS1220_Pin, GPIO_PIN_RESET); // Lower CS before writing to SPI
+
+			//Try to TX the START/SYNC command
+			if(HAL_SPI_Transmit(&hspi1, (uint8_t) ADS1220_START_SYNC, 1, 10) != HAL_OK ){
+
+				//If we doesn't get a HAL_OK - Free Mutex, SET CS_ADS1220 and return SPI_FAULT
+				HAL_GPIO_WritePin(CS_MAX31865_GPIO_Port, CS_MAX31865_Pin, GPIO_PIN_SET);
+				xSemaphoreGive(Mutex_SPI);
+				return ADS1220_SPI_FAULT;
+			}
+			//In case of Success
+			HAL_GPIO_WritePin(CS_ADS1220_GPIO_Port, CS_ADS1220_Pin, GPIO_PIN_SET);
+			xSemaphoreGive(Mutex_SPI);
+			return ADS1220_SUCCESS;
+	}
+	else
+	{
+		//If couldn't acquire the Semaphore, signal Semaphore Fault
+		return ADS1220_SEMAPHORE_FAULT;
+	}
+}
+
+/*
+ * Function to config the ADS1220 with hard-coded parameters
+ */
+int8_t ADS1220_config(SemaphoreHandle_t * Mutex_SPI){
+
+}
+
+/*
+ *  t_RX_ADS1220
+ *
+ *  Task to RX the ADS1220 data
+ *  This task receives a Task Notification to get out of SUSPENDED mode
+ *  and do the RX of the ADS1220 data.
+ *
+ *  You need to pass the SPI Semaphore Handle thru the pvParameters when
+ *  you create the task
+ *
+ */
+void t_RX_ADS1220(void * pvParameters){
+
+	SemaphoreHandle_t Mutex_SPI = (SemaphoreHandle_t) pvParameters;
+
+	for(;;){
+		//Wait forever until we receive a signal that the ADS1220 has some data to be received
+		ulTaskNotifyTake( pdTRUE, portMAX_DELAY );
+
+
+	}
+}

ADS1220/ads1220.h

@@ -178,5 +178,7 @@ enum ADS1220_FAULTS{
 }ADS1220_FAULTS;
 
 // Functions and Tasks Prototypes
-
+int8_t ADS1220_start_conversion(SemaphoreHandle_t * Mutex_SPI);
+int8_t ADS1220_config(SemaphoreHandle_t * Mutex_SPI);
+void t_RX_ADS1220(void * pvParameters);