Initial commit

RTE/Hesso_pack/ext_uart.h

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+/************************************************************************//**
+ * \file		ext_uart.h
+ * \brief		Function to use the extension uart
+ * \author	pascal (dot) sartoretti (at) hevs (dot) ch
+ ***************************************************************************/
+
+
+#ifndef __EXT_UART_H
+#define __EXT_UART_H
+
+#include <stdint.h>
+#include "stm32f7xx_hal.h"
+
+extern UART_HandleTypeDef ext_uart;		// extension uart handle
+
+/************************************************************************//**
+ * \brief 		Inits the extension uart
+ * \param speed This si the uart speed selected for example 115200.
+ * The extension uart could be use with or without interrupts.
+ *
+ * Without interrupts:
+ * -------------------
+ * To send something on the uart, you have to use HAL_UART_Transmit function
+ * as the example below.
+ * error = HAL_UART_Transmit(&ext_uart, msg, sizeof(msg),50);
+ * To receive you have to use HAL_UART_Receive as example below.
+ * error = HAL_UART_Receive(&ext_uart, msg, sizeof(msg),HAL_MAX_DELAY);
+ * The HAL_MAX_DELAY waits until receive is finished.
+ *
+ * With interrupts:
+ * ----------------
+ * The functions below have to be used:
+ * HAL_UART_Transmit_IT(&ext_uart," Welcome\n\r", 10);
+ * HAL_UART_Receive_IT(&ext_uart,data,8);
+ * 
+ * The callback functions above could be implemented for usage on interrupt
+ * mode when the full size is transmitted (or received).
+ * void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
+ * void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
+ *
+ ***************************************************************************/
+extern void Ext_UART_Init(uint32_t speed);
+
+#endif /* __BOARD_LED_H */