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176 lines
6.4 KiB
176 lines
6.4 KiB
/**
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******************************************************************************
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* File Name : stm32f4xx_hal_msp.c
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* Date : 03/02/2015 20:27:00
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* Description : This file provides code for the MSP Initialization
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* and de-Initialization codes.
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******************************************************************************
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*
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* COPYRIGHT(c) 2015 STMicroelectronics
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions 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 its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, 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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* Modifications by Robert Fisk
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f4xx_hal.h"
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#include "interrupts.h"
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#include "board_config.h"
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DMA_HandleTypeDef spiTxDmaHandle;
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DMA_HandleTypeDef spiRxDmaHandle;
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/**
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* Initializes the Global MSP.
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*/
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void HAL_MspInit(void)
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{
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// HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);
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//
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// /* System interrupt init*/
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///* SysTick_IRQn interrupt configuration */
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HAL_NVIC_SetPriority(SysTick_IRQn, INT_PRIORITY_SYSTICK, 0);
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}
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uint32_t HAL_GetHSECrystalFreqMHz(void)
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{
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if ((BOARD_REV_ID_PORT->IDR & BOARD_REV_PIN_MASK) < BOARD_REV_1_0_BETA_3)
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{
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return BOARD_REV_1_0_BETA_FREQ;
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}
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else
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{
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return BOARD_REV_1_0_BETA_3_FREQ;
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}
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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(hspi->Instance==SPI1)
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{
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/* Peripheral clock enable */
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__HAL_RCC_SPI1_CLK_ENABLE();
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__HAL_RCC_DMA2_CLK_ENABLE();
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/**SPI1 GPIO Configuration
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PA4 ------> GPIO manual slave select
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PA5 ------> SPI1_SCK
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PA6 ------> SPI1_MISO
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PA7 ------> SPI1_MOSI
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*/
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GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7;
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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_MEDIUM;
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GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
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HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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SPI1_NSS_DEASSERT;
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GPIO_InitStruct.Pin = SPI1_NSS_PIN;
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GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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HAL_GPIO_Init(SPI1_NSS_PORT, &GPIO_InitStruct);
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//Configure downstream request pin and interrupt
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GPIO_InitStruct.Pin = DOWNSTREAM_TX_OK_PIN;
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GPIO_InitStruct.Mode = GPIO_MODE_INPUT | GPIO_MODE_IT_FALLING;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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HAL_GPIO_Init(DOWNSTREAM_TX_OK_PORT, &GPIO_InitStruct);
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HAL_NVIC_SetPriority(EXTI3_IRQn, INT_PRIORITY_EXT3I, 0);
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HAL_NVIC_EnableIRQ(EXTI3_IRQn);
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//Prepare Tx DMA stream
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hspi->hdmatx = &spiTxDmaHandle;
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spiTxDmaHandle.Instance = DMA2_Stream3;
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spiTxDmaHandle.Parent = hspi;
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spiTxDmaHandle.Init.Channel = DMA_CHANNEL_3;
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spiTxDmaHandle.Init.Direction = DMA_MEMORY_TO_PERIPH;
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spiTxDmaHandle.Init.PeriphInc = DMA_PINC_DISABLE;
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spiTxDmaHandle.Init.MemInc = DMA_MINC_ENABLE;
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spiTxDmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
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spiTxDmaHandle.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
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spiTxDmaHandle.Init.Mode = DMA_NORMAL;
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spiTxDmaHandle.Init.Priority = DMA_PRIORITY_MEDIUM;
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spiTxDmaHandle.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
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HAL_DMA_Init(&spiTxDmaHandle);
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HAL_NVIC_SetPriority(DMA2_Stream3_IRQn, INT_PRIORITY_SPI_DMA, 0);
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HAL_NVIC_EnableIRQ(DMA2_Stream3_IRQn);
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//Prepare Rx DMA stream
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hspi->hdmarx = &spiRxDmaHandle;
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spiRxDmaHandle.Instance = DMA2_Stream2;
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spiRxDmaHandle.Parent = hspi;
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spiRxDmaHandle.Init.Channel = DMA_CHANNEL_3;
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spiRxDmaHandle.Init.Direction = DMA_PERIPH_TO_MEMORY;
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spiRxDmaHandle.Init.PeriphInc = DMA_PINC_DISABLE;
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spiRxDmaHandle.Init.MemInc = DMA_MINC_ENABLE;
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spiRxDmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
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spiRxDmaHandle.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
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spiRxDmaHandle.Init.Mode = DMA_NORMAL;
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spiRxDmaHandle.Init.Priority = DMA_PRIORITY_MEDIUM;
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spiRxDmaHandle.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
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HAL_DMA_Init(&spiRxDmaHandle);
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HAL_NVIC_SetPriority(DMA2_Stream2_IRQn, INT_PRIORITY_SPI_DMA, 0);
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HAL_NVIC_EnableIRQ(DMA2_Stream2_IRQn);
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}
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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==SPI1)
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{
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/* Peripheral clock disable */
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__HAL_RCC_SPI1_CLK_DISABLE();
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__HAL_RCC_DMA2_CLK_DISABLE();
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/**SPI1 GPIO Configuration
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PA4 ------> SPI1_NSS
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PA5 ------> SPI1_SCK
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PA6 ------> SPI1_MISO
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PA7 ------> SPI1_MOSI
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*/
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HAL_GPIO_DeInit(GPIOA, GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7);
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HAL_DMA_DeInit(&spiTxDmaHandle);
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HAL_DMA_DeInit(&spiRxDmaHandle);
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HAL_NVIC_DisableIRQ(DMA2_Stream3_IRQn);
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HAL_NVIC_DisableIRQ(DMA2_Stream2_IRQn);
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}
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}
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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