start practical work N°2

just add the event and measure the time of it

RTE/Hesso_pack/ext_26pin.h

@@ -0,0 +1,47 @@
+/************************************************************************//**
+ * \file		ext_keyboard.h
+ * \brief		Function to use the extension keyboard
+ * \author	pascal (dot) sartoretti (at) hevs (dot) ch
+ ***************************************************************************/
+
+
+#ifndef __EXT_26PIN_H
+#define __EXT_26PIN_H
+
+#include <stdint.h>
+#include "stm32f7xx_hal.h"
+
+#define nCS_FREQ_GEN_Pin GPIO_PIN_6
+#define nCS_FREQ_GEN_GPIO_Port GPIOF
+typedef enum
+{
+	SINUS,
+	TRIANGLE,
+	SQUARE
+}f_mode;
+/************************************************************************//**
+ * \brief 		Inits the Sparkfun frequency generator connected to SPI
+*            port on the 26 pin connector pins below:
+*            SCK   = pin 3
+*            MOSI  = pin 2
+*            nCS   = pin 4
+ ***************************************************************************/ 
+int32_t Ext_FreqGen_Init (void);
+/************************************************************************//**
+ * \brief 		Sets a frequency on Sparfun generator output
+*  \param     frequency The frequency in hertz (below 20 Hz signal is bad)
+*  \param     mode The signal mode (SINUS,TRIANGLE,SQUARE)
+*
+* The signal is centered at about 1.61 volt +/- 0.53 volts
+ ***************************************************************************/
+void Ext_FreqGen_Set(uint32_t frequency,f_mode mode);
+
+/************************************************************************//**
+ * \brief 		Inits the debug pin PF9
+ ***************************************************************************/
+ int32_t Ext_Debug_Init(void);
+
+
+
+#endif /* __BOARD_LED_H */
+