217 lines
7.5 KiB
C
217 lines
7.5 KiB
C
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/**
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******************************************************************************
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* File Name : SPI.c
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* Description : This file provides code for the configuration
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* of the SPI instances.
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******************************************************************************
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* This notice applies to any and all portions of this file
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* that are not between comment pairs USER CODE BEGIN and
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* USER CODE END. Other portions of this file, whether
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* inserted by the user or by software development tools
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* are owned by their respective copyright owners.
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*
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* Copyright (c) 2018 STMicroelectronics International N.V.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted, provided that the following conditions are met:
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*
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* 1. Redistribution of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of other
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* contributors to this software may be used to endorse or promote products
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* derived from this software without specific written permission.
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* 4. This software, including modifications and/or derivative works of this
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* software, must execute solely and exclusively on microcontroller or
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* microprocessor devices manufactured by or for STMicroelectronics.
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* 5. Redistribution and use of this software other than as permitted under
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* this license is void and will automatically terminate your rights under
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* this license.
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*
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* THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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* PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
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* RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
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* SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "spi.h"
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#include "gpio.h"
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#include "dma.h"
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/* USER CODE BEGIN 0 */
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/* USER CODE END 0 */
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SPI_HandleTypeDef hspi3;
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DMA_HandleTypeDef hdma_spi3_tx;
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DMA_HandleTypeDef hdma_spi3_rx;
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/* SPI3 init function */
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void MX_SPI3_Init(void)
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{
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hspi3.Instance = SPI3;
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hspi3.Init.Mode = SPI_MODE_MASTER;
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hspi3.Init.Direction = SPI_DIRECTION_2LINES;
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hspi3.Init.DataSize = SPI_DATASIZE_16BIT;
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hspi3.Init.CLKPolarity = SPI_POLARITY_LOW;
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hspi3.Init.CLKPhase = SPI_PHASE_2EDGE;
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hspi3.Init.NSS = SPI_NSS_SOFT;
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hspi3.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16;
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hspi3.Init.FirstBit = SPI_FIRSTBIT_MSB;
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hspi3.Init.TIMode = SPI_TIMODE_DISABLE;
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hspi3.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
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hspi3.Init.CRCPolynomial = 10;
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if (HAL_SPI_Init(&hspi3) != HAL_OK)
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{
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_Error_Handler(__FILE__, __LINE__);
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}
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}
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void HAL_SPI_MspInit(SPI_HandleTypeDef* spiHandle)
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{
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GPIO_InitTypeDef GPIO_InitStruct;
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if(spiHandle->Instance==SPI3)
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{
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/* USER CODE BEGIN SPI3_MspInit 0 */
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/* USER CODE END SPI3_MspInit 0 */
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/* SPI3 clock enable */
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__HAL_RCC_SPI3_CLK_ENABLE();
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/**SPI3 GPIO Configuration
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PC10 ------> SPI3_SCK
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PC11 ------> SPI3_MISO
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PC12 ------> SPI3_MOSI
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*/
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GPIO_InitStruct.Pin = GPIO_PIN_10|GPIO_PIN_12;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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GPIO_InitStruct.Pull = GPIO_PULLDOWN; // Idle clock and MOSI low.
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_MEDIUM;
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GPIO_InitStruct.Alternate = GPIO_AF6_SPI3;
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HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
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// MISO pull-up required for disconnect detection on SPI encoders with even parity
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GPIO_InitStruct.Pin = GPIO_PIN_11;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
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/* SPI3 DMA Init */
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/* SPI3_TX Init */
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hdma_spi3_tx.Instance = DMA1_Stream7;
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hdma_spi3_tx.Init.Channel = DMA_CHANNEL_0;
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hdma_spi3_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
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hdma_spi3_tx.Init.PeriphInc = DMA_PINC_DISABLE;
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hdma_spi3_tx.Init.MemInc = DMA_MINC_ENABLE;
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if(spiHandle->Init.DataSize == SPI_DATASIZE_8BIT){
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hdma_spi3_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
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hdma_spi3_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
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} else {
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hdma_spi3_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
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hdma_spi3_tx.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
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}
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hdma_spi3_tx.Init.Mode = DMA_NORMAL;
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hdma_spi3_tx.Init.Priority = DMA_PRIORITY_HIGH; // SPI TX must have higher priority than SPI RX
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hdma_spi3_tx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
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if (HAL_DMA_Init(&hdma_spi3_tx) != HAL_OK)
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{
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_Error_Handler(__FILE__, __LINE__);
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}
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__HAL_LINKDMA(spiHandle,hdmatx,hdma_spi3_tx);
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/* SPI3_RX Init */
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hdma_spi3_rx.Instance = DMA1_Stream0;
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hdma_spi3_rx.Init.Channel = DMA_CHANNEL_0;
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hdma_spi3_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
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hdma_spi3_rx.Init.PeriphInc = DMA_PINC_DISABLE;
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hdma_spi3_rx.Init.MemInc = DMA_MINC_ENABLE;
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if (spiHandle->Init.DataSize == SPI_DATASIZE_8BIT) {
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hdma_spi3_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
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hdma_spi3_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
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} else {
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hdma_spi3_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
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hdma_spi3_rx.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
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}
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hdma_spi3_rx.Init.Mode = DMA_NORMAL;
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hdma_spi3_rx.Init.Priority = DMA_PRIORITY_MEDIUM;
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hdma_spi3_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
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if (HAL_DMA_Init(&hdma_spi3_rx) != HAL_OK)
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{
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_Error_Handler(__FILE__, __LINE__);
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}
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__HAL_LINKDMA(spiHandle,hdmarx,hdma_spi3_rx);
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/* SPI3 interrupt Init */
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//HAL_NVIC_SetPriority(SPI3_IRQn, 3, 0);
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//HAL_NVIC_EnableIRQ(SPI3_IRQn);
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/* USER CODE BEGIN SPI3_MspInit 1 */
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/* USER CODE END SPI3_MspInit 1 */
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}
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}
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void HAL_SPI_MspDeInit(SPI_HandleTypeDef* spiHandle)
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{
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if(spiHandle->Instance==SPI3)
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{
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/* USER CODE BEGIN SPI3_MspDeInit 0 */
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/* USER CODE END SPI3_MspDeInit 0 */
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/* Peripheral clock disable */
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__HAL_RCC_SPI3_CLK_DISABLE();
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/**SPI3 GPIO Configuration
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PC10 ------> SPI3_SCK
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PC11 ------> SPI3_MISO
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PC12 ------> SPI3_MOSI
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*/
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HAL_GPIO_DeInit(GPIOC, GPIO_PIN_10|GPIO_PIN_11|GPIO_PIN_12);
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/* SPI3 DMA DeInit */
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HAL_DMA_DeInit(spiHandle->hdmatx);
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HAL_DMA_DeInit(spiHandle->hdmarx);
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/* SPI3 interrupt Deinit */
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HAL_NVIC_DisableIRQ(SPI3_IRQn);
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/* USER CODE BEGIN SPI3_MspDeInit 1 */
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/* USER CODE END SPI3_MspDeInit 1 */
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}
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}
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/* USER CODE BEGIN 1 */
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/* USER CODE END 1 */
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/**
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* @}
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*/
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/**
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* @}
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*/
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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