163 lines
6.1 KiB
C
163 lines
6.1 KiB
C
#include "spiConf.h"
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#include "stm32h743xx.h"
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#include "stm32h7xx_hal_spi.h"
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#include "stm32h7xx_hal_dma.h"
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#include "stm32h7xx_hal_def.h"
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#include <stdio.h>
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DMA_HandleTypeDef* hdma_tx = NULL;
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DMA_HandleTypeDef* hdma_rx = NULL;
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void setDmaHandles(DMA_HandleTypeDef* txHandle, DMA_HandleTypeDef* rxHandle) {
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hdma_tx = txHandle;
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hdma_rx = rxHandle;
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}
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/**
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* @brief SPI MSP Initialization
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* This function configures the hardware resources used in this example:
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* - Peripheral's clock enable
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* - Peripheral's GPIO Configuration
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* - DMA configuration for transmission request by peripheral
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* - NVIC configuration for DMA interrupt request enable
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* @param hspi: SPI handle pointer
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* @retval None
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*/
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void HAL_SPI_MspInit(SPI_HandleTypeDef *hspi)
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{
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GPIO_InitTypeDef GPIO_InitStruct;
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if(hdma_tx == NULL || hdma_rx == NULL) {
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printf("HAL_SPI_MspInit: Invalid DMA handles. Make sure to call setDmaHandles!\n");
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return;
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}
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if (hspi->Instance == SPI1)
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{
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/*##-1- Enable peripherals and GPIO Clocks #################################*/
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/* Enable GPIO TX/RX clock */
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SPIx_SCK_GPIO_CLK_ENABLE();
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SPIx_MISO_GPIO_CLK_ENABLE();
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SPIx_MOSI_GPIO_CLK_ENABLE();
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/* Enable SPI1 clock */
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SPIx_CLK_ENABLE();
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/* Enable DMA clock */
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DMAx_CLK_ENABLE();
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/*##-2- Configure peripheral GPIO ##########################################*/
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/* SPI SCK GPIO pin configuration */
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GPIO_InitStruct.Pin = SPIx_SCK_PIN;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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GPIO_InitStruct.Pull = GPIO_PULLDOWN;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
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GPIO_InitStruct.Alternate = SPIx_SCK_AF;
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HAL_GPIO_Init(SPIx_SCK_GPIO_PORT, &GPIO_InitStruct);
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/* SPI MISO GPIO pin configuration */
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GPIO_InitStruct.Pin = SPIx_MISO_PIN;
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GPIO_InitStruct.Alternate = SPIx_MISO_AF;
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HAL_GPIO_Init(SPIx_MISO_GPIO_PORT, &GPIO_InitStruct);
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/* SPI MOSI GPIO pin configuration */
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GPIO_InitStruct.Pin = SPIx_MOSI_PIN;
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GPIO_InitStruct.Alternate = SPIx_MOSI_AF;
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HAL_GPIO_Init(SPIx_MOSI_GPIO_PORT, &GPIO_InitStruct);
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/*##-3- Configure the DMA ##################################################*/
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/* Configure the DMA handler for Transmission process */
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hdma_tx->Instance = SPIx_TX_DMA_STREAM;
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hdma_tx->Init.FIFOMode = DMA_FIFOMODE_DISABLE;
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hdma_tx->Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
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hdma_tx->Init.MemBurst = DMA_MBURST_INC4;
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hdma_tx->Init.PeriphBurst = DMA_PBURST_INC4;
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hdma_tx->Init.Request = SPIx_TX_DMA_REQUEST;
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hdma_tx->Init.Direction = DMA_MEMORY_TO_PERIPH;
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hdma_tx->Init.PeriphInc = DMA_PINC_DISABLE;
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hdma_tx->Init.MemInc = DMA_MINC_ENABLE;
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hdma_tx->Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
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hdma_tx->Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
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hdma_tx->Init.Mode = DMA_NORMAL;
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hdma_tx->Init.Priority = DMA_PRIORITY_LOW;
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HAL_DMA_Init(hdma_tx);
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/* Associate the initialized DMA handle to the the SPI handle */
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__HAL_LINKDMA(hspi, hdmatx, *hdma_tx);
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/* Configure the DMA handler for Transmission process */
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hdma_rx->Instance = SPIx_RX_DMA_STREAM;
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hdma_rx->Init.FIFOMode = DMA_FIFOMODE_DISABLE;
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hdma_rx->Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
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hdma_rx->Init.MemBurst = DMA_MBURST_INC4;
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hdma_rx->Init.PeriphBurst = DMA_PBURST_INC4;
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hdma_rx->Init.Request = SPIx_RX_DMA_REQUEST;
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hdma_rx->Init.Direction = DMA_PERIPH_TO_MEMORY;
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hdma_rx->Init.PeriphInc = DMA_PINC_DISABLE;
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hdma_rx->Init.MemInc = DMA_MINC_ENABLE;
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hdma_rx->Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
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hdma_rx->Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
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hdma_rx->Init.Mode = DMA_NORMAL;
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hdma_rx->Init.Priority = DMA_PRIORITY_HIGH;
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HAL_DMA_Init(hdma_rx);
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/* Associate the initialized DMA handle to the the SPI handle */
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__HAL_LINKDMA(hspi, hdmarx, *hdma_rx);
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/*##-4- Configure the NVIC for DMA #########################################*/
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/* NVIC configuration for DMA transfer complete interrupt (SPI1_TX) */
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HAL_NVIC_SetPriority(SPIx_DMA_TX_IRQn, 1, 1);
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HAL_NVIC_EnableIRQ(SPIx_DMA_TX_IRQn);
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/* NVIC configuration for DMA transfer complete interrupt (SPI1_RX) */
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HAL_NVIC_SetPriority(SPIx_DMA_RX_IRQn, 1, 0);
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HAL_NVIC_EnableIRQ(SPIx_DMA_RX_IRQn);
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/*##-5- Configure the NVIC for SPI #########################################*/
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/* NVIC configuration for SPI transfer complete interrupt (SPI1) */
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HAL_NVIC_SetPriority(SPIx_IRQn, 1, 0);
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HAL_NVIC_EnableIRQ(SPIx_IRQn);
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}
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}
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/**
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* @brief SPI MSP De-Initialization
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* This function frees the hardware resources used in this example:
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* - Disable the Peripheral's clock
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* - Revert GPIO, DMA and NVIC configuration to their default state
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* @param hspi: SPI handle pointer
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* @retval None
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*/
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void HAL_SPI_MspDeInit(SPI_HandleTypeDef *hspi)
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{
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if(hspi->Instance == SPIx)
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{
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/*##-1- Reset peripherals ##################################################*/
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SPIx_FORCE_RESET();
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SPIx_RELEASE_RESET();
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/*##-2- Disable peripherals and GPIO Clocks ################################*/
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/* Deconfigure SPI SCK */
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HAL_GPIO_DeInit(SPIx_SCK_GPIO_PORT, SPIx_SCK_PIN);
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/* Deconfigure SPI MISO */
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HAL_GPIO_DeInit(SPIx_MISO_GPIO_PORT, SPIx_MISO_PIN);
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/* Deconfigure SPI MOSI */
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HAL_GPIO_DeInit(SPIx_MOSI_GPIO_PORT, SPIx_MOSI_PIN);
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/*##-3- Disable the DMA ####################################################*/
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/* De-Initialize the DMA associated to transmission process */
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HAL_DMA_DeInit(hdma_tx);
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/* De-Initialize the DMA associated to reception process */
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HAL_DMA_DeInit(hdma_rx);
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/*##-4- Disable the NVIC for DMA ###########################################*/
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HAL_NVIC_DisableIRQ(SPIx_DMA_TX_IRQn);
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HAL_NVIC_DisableIRQ(SPIx_DMA_RX_IRQn);
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/*##-5- Disable the NVIC for SPI ###########################################*/
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HAL_NVIC_EnableIRQ(SPIx_IRQn);
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}
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}
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