给我这个芯片的stm32的驱动代码
时间: 2024-03-25 22:39:27 浏览: 19
以下是一个基本的示例代码,可以在STM32上使用SPI接口与ADS8361进行通信。需要根据实际情况进行修改和调整。
```c
#include "stm32f4xx.h"
#define SPIx SPI1
#define SPIx_CLK RCC_APB2Periph_SPI1
#define SPIx_CLK_INIT RCC_APB2PeriphClockCmd
#define SPIx_IRQn SPI1_IRQn
#define SPIx_IRQHANDLER SPI1_IRQHandler
#define SPIx_SCK_PIN GPIO_Pin_5
#define SPIx_SCK_GPIO_PORT GPIOA
#define SPIx_SCK_GPIO_CLK RCC_AHB1Periph_GPIOA
#define SPIx_SCK_SOURCE GPIO_PinSource5
#define SPIx_SCK_AF GPIO_AF_SPI1
#define SPIx_MISO_PIN GPIO_Pin_6
#define SPIx_MISO_GPIO_PORT GPIOA
#define SPIx_MISO_GPIO_CLK RCC_AHB1Periph_GPIOA
#define SPIx_MISO_SOURCE GPIO_PinSource6
#define SPIx_MISO_AF GPIO_AF_SPI1
#define SPIx_MOSI_PIN GPIO_Pin_7
#define SPIx_MOSI_GPIO_PORT GPIOA
#define SPIx_MOSI_GPIO_CLK RCC_AHB1Periph_GPIOA
#define SPIx_MOSI_SOURCE GPIO_PinSource7
#define SPIx_MOSI_AF GPIO_AF_SPI1
#define SPIx_CS_PIN GPIO_Pin_4
#define SPIx_CS_GPIO_PORT GPIOA
#define SPIx_CS_GPIO_CLK RCC_AHB1Periph_GPIOA
#define ADS8361_START 0x08
#define ADS8361_SINGLE_ENDED_INPUT 0x10
#define ADS8361_CH0_SINGLE_ENDED 0x20
#define ADS8361_CH1_SINGLE_ENDED 0x30
#define ADS8361_CH2_SINGLE_ENDED 0x40
#define ADS8361_CH3_SINGLE_ENDED 0x50
void SPIx_Init(void)
{
SPI_InitTypeDef SPI_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable GPIO clocks */
RCC_AHB1PeriphClockCmd(SPIx_SCK_GPIO_CLK | SPIx_MISO_GPIO_CLK | SPIx_MOSI_GPIO_CLK, ENABLE);
/* Enable SPI clock */
SPIx_CLK_INIT(SPIx_CLK, ENABLE);
/* Configure SPI pins */
GPIO_InitStructure.GPIO_Pin = SPIx_SCK_PIN | SPIx_MISO_PIN | SPIx_MOSI_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Connect SPI pins to AF */
GPIO_PinAFConfig(SPIx_SCK_GPIO_PORT, SPIx_SCK_SOURCE, SPIx_SCK_AF);
GPIO_PinAFConfig(SPIx_MISO_GPIO_PORT, SPIx_MISO_SOURCE, SPIx_MISO_AF);
GPIO_PinAFConfig(SPIx_MOSI_GPIO_PORT, SPIx_MOSI_SOURCE, SPIx_MOSI_AF);
/* Configure CS pin */
GPIO_InitStructure.GPIO_Pin = SPIx_CS_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(SPIx_CS_GPIO_PORT, &GPIO_InitStructure);
/* Deselect ADS8361 */
GPIO_SetBits(SPIx_CS_GPIO_PORT, SPIx_CS_PIN);
/* Configure SPI */
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPIx, &SPI_InitStructure);
/* Enable SPI */
SPI_Cmd(SPIx, ENABLE);
}
void ADS8361_SendCommand(uint8_t command)
{
/* Select ADS8361 */
GPIO_ResetBits(SPIx_CS_GPIO_PORT, SPIx_CS_PIN);
/* Wait for SPI to be ready */
while(SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_TXE) == RESET);
/* Send command */
SPI_I2S_SendData(SPIx, command);
/* Wait for SPI to be ready */
while(SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_RXNE) == RESET);
/* Dummy read to clear RXNE flag */
SPI_I2S_ReceiveData(SPIx);
/* Deselect ADS8361 */
GPIO_SetBits(SPIx_CS_GPIO_PORT, SPIx_CS_PIN);
}
int main(void)
{
/* Initialize SPI */
SPIx_Init();
/* Send a command to ADS8361 */
ADS8361_SendCommand(ADS8361_START | ADS8361_CH0_SINGLE_ENDED);
while(1);
return 0;
}
```