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RTE/Hesso_pack/ext_keyboard.h

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+/************************************************************************//**
+ * \file		ext_keyboard.h
+ * \brief		Function to use the extension keyboard
+ * \author	pascal (dot) sartoretti (at) hevs (dot) ch
+ ***************************************************************************/
+
+
+#ifndef __EXT_KEYBOARD_H
+#define __EXT_KEYBOARD_H
+
+#include <stdint.h>
+#include "stm32f7xx_hal.h"
+
+extern uint8_t ext_kbChar;
+
+/************************************************************************//**
+ * \brief 		Inits the extension keyboard
+ * The extension keyboard use interrupt from keyboard (PF8)
+ *
+ * Read keyboard non blocking (interrupt):
+ * ---------------------------------------
+ * To read the keyboard, the callback function HAL_GPIO_EXTI_Callback has
+ * to be implemented.
+ * the example below send the keyboard char to the serial port
+ * void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
+ * {
+ * 	 if(GPIO_Pin == GPIO_PIN_8)
+ * 	 {
+ * 		 HAL_UART_Transmit(&ext_uart, &ext_kbChar, 1,100);;	
+ *   }
+ * }
+ * Read keyboard blocking (pooling until key pressed):
+ * ---------------------------------------------------
+ * The functions below have to be used:
+ * pressed = Ext_Keyboard_Read();
+ *
+ * \warning The external interrupts (5,6,7,9) have to be implemented
+ * in the ext_keyboard.c file because they share the same processor irq 
+ * EXTI9_5_IRQHandler.
+ ***************************************************************************/
+ void Ext_Keyboard_Init(void);
+
+/************************************************************************//**
+ * \brief Read the pressed key on extension keyboard
+ * \return The ASCII code of key pressed.
+ *
+ * \warning   This function is blocking until a char is received
+ ***************************************************************************/
+ uint8_t Ext_Keyboard_Read(void);
+
+
+#endif /* __BOARD_LED_H */
+