GML-Group/SoftSPI_HAL_Lib
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lxbpxylps@126.com 2021-10-12 12:11:33 +08:00
parent 645e976d42
commit e6d62c90e6
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/**
* @file softspi.c
* @author Myth
* @version 0.1
* @date 2021.10.12
* @brief STM32 SoftSPI Library
*/
#include "softspi.h"
SoftSPI_InitTypeDef config;
uint8_t GPIOx_Pin_Init(GPIO_TypeDef *GPIOx, uint32_t Pin, uint32_t Mode, uint32_t Pull);
HAL_StatusTypeDef SoftSPI_Init(SoftSPI_InitTypeDef *SoftSPI_Initure)
{
config.SCLK_GPIO = SoftSPI_Initure->SCLK_GPIO;
config.SCLK_Pin = SoftSPI_Initure->SCLK_Pin;
if (!GPIOx_Pin_Init(config.SCLK_GPIO, config.SCLK_Pin, GPIO_MODE_OUTPUT_PP, GPIO_NOPULL))
return HAL_ERROR;
config.MOSI_GPIO = SoftSPI_Initure->MOSI_GPIO;
config.MOSI_Pin = SoftSPI_Initure->MOSI_Pin;
if (!GPIOx_Pin_Init(config.MOSI_GPIO, config.MOSI_Pin, GPIO_MODE_OUTPUT_PP, GPIO_NOPULL))
return HAL_ERROR;
config.MISO_GPIO = SoftSPI_Initure->MISO_GPIO;
config.MISO_Pin = SoftSPI_Initure->MISO_Pin;
if (!GPIOx_Pin_Init(config.MISO_GPIO, config.MISO_Pin, GPIO_MODE_INPUT, GPIO_PULLUP))
return HAL_ERROR;
config.SS_GPIO = SoftSPI_Initure->SS_GPIO;
config.SS_Pin = SoftSPI_Initure->SS_Pin;
if (!GPIOx_Pin_Init(config.SS_GPIO, config.SS_Pin, GPIO_MODE_OUTPUT_PP, GPIO_NOPULL))
return HAL_ERROR;
config.Delay_Time = SoftSPI_Initure->Delay_Time;
return HAL_OK;
}
uint8_t SoftSPI_WriteRead(uint8_t byte)
{
uint8_t data = 0;
uint8_t i;
// Select Device
HAL_GPIO_WritePin(config.SS_GPIO, config.SS_Pin, GPIO_PIN_RESET);
for (i = 0; i < 8; i++)
{
HAL_GPIO_WritePin(config.SCLK_GPIO, config.SCLK_Pin, GPIO_PIN_RESET);
SoftSPI_Delay_us(config.Delay_Time);
if (byte & 0x80)
HAL_GPIO_WritePin(config.MOSI_GPIO, config.MOSI_Pin, GPIO_PIN_SET);
else
HAL_GPIO_WritePin(config.MOSI_GPIO, config.MOSI_Pin, GPIO_PIN_RESET);
SoftSPI_Delay_us(config.Delay_Time);
byte <<= 1;
HAL_GPIO_WritePin(config.SCLK_GPIO, config.SCLK_Pin, GPIO_PIN_SET);
SoftSPI_Delay_us(config.Delay_Time);
data <<= 1;
if (HAL_GPIO_ReadPin(config.MISO_GPIO, config.MISO_Pin) == GPIO_PIN_SET)
data |= 0x01;
SoftSPI_Delay_us(config.Delay_Time);
}
// Unselect Device
HAL_GPIO_WritePin(config.SS_GPIO, config.SS_Pin, GPIO_PIN_SET);
return data;
}
void SoftSPI_WriteReadBuff(uint8_t *pWrite, uint8_t *pRead, uint32_t len)
{
uint8_t data;
uint8_t byte;
uint8_t i, j;
// Select Device
HAL_GPIO_WritePin(config.SS_GPIO, config.SS_Pin, GPIO_PIN_RESET);
for (j = 0; j < len; j++)
{
data = 0;
byte = pWrite[j];
for (i = 0; i < 8; i++)
{
HAL_GPIO_WritePin(config.SCLK_GPIO, config.SCLK_Pin, GPIO_PIN_RESET);
SoftSPI_Delay_us(config.Delay_Time);
if (byte & 0x80)
HAL_GPIO_WritePin(config.MOSI_GPIO, config.MOSI_Pin, GPIO_PIN_SET);
else
HAL_GPIO_WritePin(config.MOSI_GPIO, config.MOSI_Pin, GPIO_PIN_RESET);
SoftSPI_Delay_us(config.Delay_Time);
byte <<= 1;
HAL_GPIO_WritePin(config.SCLK_GPIO, config.SCLK_Pin, GPIO_PIN_SET);
SoftSPI_Delay_us(config.Delay_Time);
data <<= 1;
if (HAL_GPIO_ReadPin(config.MISO_GPIO, config.MISO_Pin) == GPIO_PIN_SET)
data |= 0x01;
SoftSPI_Delay_us(config.Delay_Time);
}
pRead[j] = data;
}
// Unselect Device
HAL_GPIO_WritePin(config.SS_GPIO, config.SS_Pin, GPIO_PIN_SET);
}
uint8_t GPIOx_Pin_Init(GPIO_TypeDef *GPIOx, uint32_t Pin, uint32_t Mode, uint32_t Pull)
{
switch ((uint32_t)(GPIOx))
{
case (uint32_t)GPIOA:
{
GPIO_InitTypeDef GPIO_Initure;
__HAL_RCC_GPIOA_CLK_ENABLE();
GPIO_Initure.Pin = Pin;
GPIO_Initure.Mode = Mode;
GPIO_Initure.Pull = Pull;
GPIO_Initure.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOA, &GPIO_Initure);
}
break;
case (uint32_t)GPIOB:
{
GPIO_InitTypeDef GPIO_Initure;
__HAL_RCC_GPIOB_CLK_ENABLE();
GPIO_Initure.Pin = Pin;
GPIO_Initure.Mode = Mode;
GPIO_Initure.Pull = Pull;
GPIO_Initure.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOB, &GPIO_Initure);
}
break;
case (uint32_t)GPIOC:
{
GPIO_InitTypeDef GPIO_Initure;
__HAL_RCC_GPIOC_CLK_ENABLE();
GPIO_Initure.Pin = Pin;
GPIO_Initure.Mode = Mode;
GPIO_Initure.Pull = Pull;
GPIO_Initure.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOC, &GPIO_Initure);
}
break;
case (uint32_t)GPIOD:
{
GPIO_InitTypeDef GPIO_Initure;
__HAL_RCC_GPIOD_CLK_ENABLE();
GPIO_Initure.Pin = Pin;
GPIO_Initure.Mode = Mode;
GPIO_Initure.Pull = Pull;
GPIO_Initure.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOD, &GPIO_Initure);
}
break;
default:
return 0;
}
return 1;
}

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/**
* @file softspi.h
* @author Myth
* @version 0.1
* @date 2021.10.12
* @brief STM32 SoftSPI Library
*/
#ifndef __SOFTSPI_H
#define __SOFTSPI_H
#include "softspi_conf.h"
/**
* @brief SoftSPI Configuration Structure definition
*/
typedef struct
{
GPIO_TypeDef *SCLK_GPIO;
uint32_t SCLK_Pin;
GPIO_TypeDef *MOSI_GPIO;
uint32_t MOSI_Pin;
GPIO_TypeDef *MISO_GPIO;
uint32_t MISO_Pin;
GPIO_TypeDef *SS_GPIO;
uint32_t SS_Pin;
uint32_t Delay_Time;
} SoftSPI_InitTypeDef;
HAL_StatusTypeDef SoftSPI_Init(SoftSPI_InitTypeDef *SoftSPI_Initure);
uint8_t SoftSPI_WriteRead(uint8_t byte);
void SoftSPI_WriteReadBuff(uint8_t *pWrite, uint8_t *pRead, uint32_t len);
#endif

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softspi_conf.h Normal file
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/**
* @file softspi_conf.h
* @author Myth
* @version 0.1
* @date 2021.10.12
* @brief STM32 SoftSPI Library Config File
*/
#ifndef __SOFTSPI_CONF_H
#define __SOFTSPI_CONF_H
// Set your HAL Library here.
#include "stm32f1xx_hal.h"
// Set your owm Delay_us function here.
#include "systick.h"
#define SoftSPI_Delay_us(__time__) Delay_us(__time__)
#endif