帮我写一份FPGA与stm32h7通信的代码
时间: 2023-04-07 16:01:39 浏览: 166
我可以回答这个问题。以下是一份FPGA与stm32h7通信的代码:
```c
#include "stm32h7xx_hal.h"
#include "main.h"
#define FPGA_SPI_TIMEOUT 1000
SPI_HandleTypeDef hspi1;
void MX_SPI1_Init(void)
{
hspi1.Instance = SPI1;
hspi1.Init.Mode = SPI_MODE_MASTER;
hspi1.Init.Direction = SPI_DIRECTION_2LINES;
hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
hspi1.Init.NSS = SPI_NSS_SOFT;
hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256;
hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi1.Init.CRCPolynomial = 7;
hspi1.Init.CRCLength = SPI_CRC_LENGTH_DATASIZE;
hspi1.Init.NSSPMode = SPI_NSS_PULSE_DISABLE;
if (HAL_SPI_Init(&hspi1) != HAL_OK)
{
Error_Handler();
}
}
void HAL_SPI_MspInit(SPI_HandleTypeDef* spiHandle)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
if(spiHandle->Instance==SPI1)
{
__HAL_RCC_SPI1_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
/**SPI1 GPIO Configuration
PA5 ------> SPI1_SCK
PA6 ------> SPI1_MISO
PA7 ------> SPI1_MOSI
*/
GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7;
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_SPI1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}
}
void HAL_SPI_MspDeInit(SPI_HandleTypeDef* spiHandle)
{
if(spiHandle->Instance==SPI1)
{
__HAL_RCC_SPI1_CLK_DISABLE();
/**SPI1 GPIO Configuration
PA5 ------> SPI1_SCK
PA6 ------> SPI1_MISO
PA7 ------> SPI1_MOSI
*/
HAL_GPIO_DeInit(GPIOA, GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7);
}
}
void FPGA_SPI_Write(uint8_t* pData, uint16_t Size)
{
HAL_GPIO_WritePin(FPGA_SPI_CS_GPIO_Port, FPGA_SPI_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_Transmit(&hspi1, pData, Size, FPGA_SPI_TIMEOUT);
HAL_GPIO_WritePin(FPGA_SPI_CS_GPIO_Port, FPGA_SPI_CS_Pin, GPIO_PIN_SET);
}
void FPGA_SPI_Read(uint8_t* pData, uint16_t Size)
{
HAL_GPIO_WritePin(FPGA_SPI_CS_GPIO_Port, FPGA_SPI_CS_Pin, GPIO_PIN_RESET);
HAL_SPI_Receive(&hspi1, pData, Size, FPGA_SPI_TIMEOUT);
HAL_GPIO_WritePin(FPGA_SPI_CS_GPIO_Port, FPGA_SPI_CS_Pin, GPIO_PIN_SET);
}
```
这是一个使用SPI协议进行通信的代码,其中FPGA_SPI_Write函数用于向FPGA发送数据,FPGA_SPI_Read函数用于从FPGA读取数据。在使用前需要先调用MX_SPI1_Init函数进行SPI1的初始化。
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