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usb-firewall-fork/Downstream/Src/hal_msp.c

164 lines
5.7 KiB

/**
******************************************************************************
* File Name : stm32f4xx_hal_msp.c
* Description : This file provides code for the MSP Initialization
* and de-Initialization codes.
******************************************************************************
*
* COPYRIGHT(c) 2015 STMicroelectronics
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*
* Modifications by Robert Fisk
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_hal.h"
#include "interrupts.h"
#include "board_config.h"
DMA_HandleTypeDef hdma_spi1_rx;
DMA_HandleTypeDef hdma_spi1_tx;
void HAL_MspInit(void)
{
HAL_NVIC_SetPriority(SysTick_IRQn, INT_PRIORITY_SYSTICK, 0);
}
uint32_t HAL_GetHSECrystalFreqMHz(void)
{
if ((BOARD_REV_ID_PORT->IDR & BOARD_REV_PIN_MASK) < BOARD_REV_1_0_BETA_3)
{
return BOARD_REV_1_0_BETA_FREQ;
}
else
{
return BOARD_REV_1_0_BETA_3_FREQ;
}
}
void HAL_SPI_MspInit(SPI_HandleTypeDef* hspi)
{
GPIO_InitTypeDef GPIO_InitStruct;
if(hspi->Instance==SPI1)
{
__SPI1_CLK_ENABLE();
__DMA2_CLK_ENABLE();
/**SPI1 GPIO Configuration
PA4 ------> SPI_NSS
PA5 ------> SPI1_SCK
PA6 ------> SPI1_MISO
PA7 ------> SPI1_MOSI
*/
GPIO_InitStruct.Pin = GPIO_PIN_4; //NSS is active low so pull up
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_MEDIUM;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7; //SCK & data are active high so pull down
GPIO_InitStruct.Pull = GPIO_PULLDOWN;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
UPSTREAM_TX_REQUEST_DEASSERT;
GPIO_InitStruct.Pin = UPSTREAM_TX_REQUEST_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(UPSTREAM_TX_REQUEST_PORT, &GPIO_InitStruct);
/* Peripheral DMA init*/
hdma_spi1_rx.Instance = DMA2_Stream2;
hdma_spi1_rx.Init.Channel = DMA_CHANNEL_3;
hdma_spi1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
hdma_spi1_rx.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_spi1_rx.Init.MemInc = DMA_MINC_ENABLE;
hdma_spi1_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
hdma_spi1_rx.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
hdma_spi1_rx.Init.Mode = DMA_NORMAL;
hdma_spi1_rx.Init.Priority = DMA_PRIORITY_MEDIUM;
hdma_spi1_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
HAL_DMA_Init(&hdma_spi1_rx);
__HAL_LINKDMA(hspi,hdmarx,hdma_spi1_rx);
hdma_spi1_tx.Instance = DMA2_Stream3;
hdma_spi1_tx.Init.Channel = DMA_CHANNEL_3;
hdma_spi1_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
hdma_spi1_tx.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_spi1_tx.Init.MemInc = DMA_MINC_ENABLE;
hdma_spi1_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
hdma_spi1_tx.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
hdma_spi1_tx.Init.Mode = DMA_NORMAL;
hdma_spi1_tx.Init.Priority = DMA_PRIORITY_MEDIUM;
hdma_spi1_tx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
HAL_DMA_Init(&hdma_spi1_tx);
__HAL_LINKDMA(hspi,hdmatx,hdma_spi1_tx);
/* DMA interrupt init */
HAL_NVIC_SetPriority(DMA2_Stream2_IRQn, INT_PRIORITY_SPI_DMA, 0);
HAL_NVIC_EnableIRQ(DMA2_Stream2_IRQn);
HAL_NVIC_SetPriority(DMA2_Stream3_IRQn, INT_PRIORITY_SPI_DMA, 0);
HAL_NVIC_EnableIRQ(DMA2_Stream3_IRQn);
}
}
void HAL_SPI_MspDeInit(SPI_HandleTypeDef* hspi)
{
if(hspi->Instance==SPI1)
{
__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);
/* Peripheral DMA DeInit*/
HAL_DMA_DeInit(hspi->hdmarx);
HAL_DMA_DeInit(hspi->hdmatx);
}
}
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/