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start practical work N°2

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just add the event and measure the time of it
This commit is contained in:
Rémi Heredero
2024-04-08 16:11:43 +02:00
parent eeff72a57b
commit 8ad28e5e39
7 changed files with 381 additions and 65 deletions
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135
RTE/Hesso_pack/ext_26pin.c Normal file
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#include "stm32f7xx_hal.h"
#include "ext_26pin.h"
SPI_HandleTypeDef hspi2;
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
int32_t Ext_Debug_Init (void) {
GPIO_InitTypeDef GPIO_InitStruct;
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOF_CLK_ENABLE();
/* Configure GPIO pin: PF9 (GPIO_DEBUG) */
GPIO_InitStruct.Pin = GPIO_PIN_9;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOF, &GPIO_InitStruct);
return 0;
}
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
int32_t Ext_FreqGen_Init (void)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOF_CLK_ENABLE();
__HAL_RCC_GPIOI_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(nCS_FREQ_GEN_GPIO_Port, nCS_FREQ_GEN_Pin, GPIO_PIN_SET);
/*Configure GPIO pin : nCS_FREQ_GEN_Pin */
GPIO_InitStruct.Pin = nCS_FREQ_GEN_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(nCS_FREQ_GEN_GPIO_Port, &GPIO_InitStruct);
__HAL_RCC_SPI2_CLK_ENABLE();
/**SPI2 GPIO Configuration
PI1 ------> SPI2_SCK
PB15 ------> SPI2_MOSI
*/
GPIO_InitStruct.Pin = GPIO_PIN_1;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI2;
HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);
GPIO_InitStruct.Pin = GPIO_PIN_15;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI2;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* SPI2 parameter configuration*/
hspi2.Instance = SPI2;
hspi2.Init.Mode = SPI_MODE_MASTER;
hspi2.Init.Direction = SPI_DIRECTION_2LINES;
hspi2.Init.DataSize = SPI_DATASIZE_8BIT;
hspi2.Init.CLKPolarity = SPI_POLARITY_HIGH;
hspi2.Init.CLKPhase = SPI_PHASE_1EDGE;
hspi2.Init.NSS = SPI_NSS_SOFT;
hspi2.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_64;
hspi2.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi2.Init.TIMode = SPI_TIMODE_DISABLE;
hspi2.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi2.Init.CRCPolynomial = 7;
hspi2.Init.CRCLength = SPI_CRC_LENGTH_DATASIZE;
hspi2.Init.NSSPMode = SPI_NSS_PULSE_DISABLE;
if (HAL_SPI_Init(&hspi2) != HAL_OK)
return -1;
Ext_FreqGen_Set(20,SQUARE);
Ext_FreqGen_Set(20,SQUARE);
return 0;
}
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
void Ext_FreqGen_Set(uint32_t frequency,f_mode mode)
{
uint8_t data[2];
float calcDivisor;
uint32_t divisorInt;
calcDivisor = ((float)frequency * 268435456L) / 16000000L;
divisorInt = (uint32_t)calcDivisor + 1;
//----------------------------------------------------------------------------
// reset generator
data[0] = 0x21;
data[1] = 0x00;
HAL_GPIO_WritePin(nCS_FREQ_GEN_GPIO_Port, nCS_FREQ_GEN_Pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(&hspi2,data,2,10);
HAL_GPIO_WritePin(nCS_FREQ_GEN_GPIO_Port, nCS_FREQ_GEN_Pin, GPIO_PIN_SET);
//----------------------------------------------------------------------------
// set frequency LSB (14 bits)
data[0] = ((divisorInt & 0x3FFF) | 0x4000) >> 8;
data[1] = ((divisorInt & 0x3FFF) | 0x4000) >> 0;
HAL_GPIO_WritePin(nCS_FREQ_GEN_GPIO_Port, nCS_FREQ_GEN_Pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(&hspi2,data,2,10);
HAL_GPIO_WritePin(nCS_FREQ_GEN_GPIO_Port, nCS_FREQ_GEN_Pin, GPIO_PIN_SET);
//----------------------------------------------------------------------------
// set frequency MSB (14 bits)
data[0] = (((divisorInt>>14) & 0x3FFF) | 0x4000) >> 8;
data[1] = (((divisorInt>>14) & 0x3FFF) | 0x4000) >> 0;
HAL_GPIO_WritePin(nCS_FREQ_GEN_GPIO_Port, nCS_FREQ_GEN_Pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(&hspi2,data,2,10);
HAL_GPIO_WritePin(nCS_FREQ_GEN_GPIO_Port, nCS_FREQ_GEN_Pin, GPIO_PIN_SET);
//----------------------------------------------------------------------------
// set output signal
data[0] = 0x20; // unreset
switch(mode)
{
case SINUS:
data[1] = 0x00;
break;
case TRIANGLE:
data[1] = 0x02;
break;
case SQUARE:
data[1] = 0x28;
break;
}
HAL_GPIO_WritePin(nCS_FREQ_GEN_GPIO_Port, nCS_FREQ_GEN_Pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(&hspi2,data,2,10);
HAL_GPIO_WritePin(nCS_FREQ_GEN_GPIO_Port, nCS_FREQ_GEN_Pin, GPIO_PIN_SET);
}

47
RTE/Hesso_pack/ext_26pin.h Normal file
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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_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 */

58
RTE/Hesso_pack/ext_buttons.c Normal file
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#include "stm32f7xx_hal.h"
#include "ext_buttons.h"
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
int32_t Ext_Buttons_Init (void) {
GPIO_InitTypeDef GPIO_InitStruct;
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOG_CLK_ENABLE();
__HAL_RCC_GPIOI_CLK_ENABLE();
/* Configure GPIO pin: PI2 (BTN_0) */
GPIO_InitStruct.Pin = GPIO_PIN_2;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_PULLUP;
HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);
/* Configure GPIO pin: PI3 (BTN_1) */
GPIO_InitStruct.Pin = GPIO_PIN_3;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_PULLUP;
HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);
/* Configure GPIO pin: PG7 (BTN_2) */
GPIO_InitStruct.Pin = GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_PULLUP;
HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);
/* Configure GPIO pin: PG6 (BTN_3) */
GPIO_InitStruct.Pin = GPIO_PIN_6;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_PULLUP;
HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);
return 0;
}
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
uint32_t Ext_Buttons_GetState (void) {
uint32_t val = 0;
if (HAL_GPIO_ReadPin(GPIOI, GPIO_PIN_2) == GPIO_PIN_RESET) {
val |= 1;
}
if (HAL_GPIO_ReadPin(GPIOI, GPIO_PIN_3) == GPIO_PIN_RESET) {
val |= 2;
}
if (HAL_GPIO_ReadPin(GPIOG, GPIO_PIN_7) == GPIO_PIN_RESET) {
val |= 4;
}
if (HAL_GPIO_ReadPin(GPIOG, GPIO_PIN_6) == GPIO_PIN_RESET) {
val |= 8;
}
return val;
}

23
RTE/Hesso_pack/ext_buttons.h Normal file
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/************************************************************************//**
* \file ext_buttons.h
* \brief Function to use the extension uart
* \author pascal (dot) sartoretti (at) hevs (dot) ch
***************************************************************************/
#ifndef __EXT_BUTTONS_H
#define __EXT_BUTTONS_H
#include <stdint.h>
/************************************************************************//**
* \brief Inits the external buttons usage.
* \return Always #0
***************************************************************************/
extern int32_t Ext_Buttons_Init(void);
/************************************************************************//**
* \brief Reads the buttons status
* \return The binary state of the buttons (example 4 for button 2 pressed).
***************************************************************************/
extern uint32_t Ext_Buttons_GetState(void);
#endif /* __BOARD_BUTTONS_H */