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151 lines
5.5 KiB
151 lines
5.5 KiB
/**
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******************************************************************************
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* File Name : stm32f4xx_hal_msp.c
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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 hdma_spi1_rx;
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DMA_HandleTypeDef hdma_spi1_tx;
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void HAL_MspInit(void)
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{
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HAL_NVIC_SetPriority(SysTick_IRQn, INT_PRIORITY_SYSTICK, 0);
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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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__SPI1_CLK_ENABLE();
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__DMA2_CLK_ENABLE();
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/**SPI1 GPIO Configuration
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PA4 ------> SPI_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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GPIO_InitStruct.Pin = GPIO_PIN_4; //NSS is active low so pull up
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GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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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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GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7; //SCK & data are active high so pull down
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GPIO_InitStruct.Pull = GPIO_PULLDOWN;
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HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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UPSTREAM_TX_REQUEST_DEASSERT;
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GPIO_InitStruct.Pin = UPSTREAM_TX_REQUEST_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(UPSTREAM_TX_REQUEST_PORT, &GPIO_InitStruct);
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/* Peripheral DMA init*/
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hdma_spi1_rx.Instance = DMA2_Stream2;
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hdma_spi1_rx.Init.Channel = DMA_CHANNEL_3;
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hdma_spi1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
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hdma_spi1_rx.Init.PeriphInc = DMA_PINC_DISABLE;
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hdma_spi1_rx.Init.MemInc = DMA_MINC_ENABLE;
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hdma_spi1_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
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hdma_spi1_rx.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
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hdma_spi1_rx.Init.Mode = DMA_NORMAL;
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hdma_spi1_rx.Init.Priority = DMA_PRIORITY_MEDIUM;
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hdma_spi1_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
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HAL_DMA_Init(&hdma_spi1_rx);
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__HAL_LINKDMA(hspi,hdmarx,hdma_spi1_rx);
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hdma_spi1_tx.Instance = DMA2_Stream3;
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hdma_spi1_tx.Init.Channel = DMA_CHANNEL_3;
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hdma_spi1_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
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hdma_spi1_tx.Init.PeriphInc = DMA_PINC_DISABLE;
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hdma_spi1_tx.Init.MemInc = DMA_MINC_ENABLE;
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hdma_spi1_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
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hdma_spi1_tx.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
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hdma_spi1_tx.Init.Mode = DMA_NORMAL;
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hdma_spi1_tx.Init.Priority = DMA_PRIORITY_MEDIUM;
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hdma_spi1_tx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
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HAL_DMA_Init(&hdma_spi1_tx);
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__HAL_LINKDMA(hspi,hdmatx,hdma_spi1_tx);
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/* DMA interrupt init */
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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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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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}
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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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__SPI1_CLK_DISABLE();
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/**SPI1 GPIO Configuration
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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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/* Peripheral DMA DeInit*/
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HAL_DMA_DeInit(hspi->hdmarx);
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HAL_DMA_DeInit(hspi->hdmatx);
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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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