163 lines
4.5 KiB
C
163 lines
4.5 KiB
C
/*
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* drv_spi.c
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*
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* Created on: Jun 28, 2023
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* Author: gxms0
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*/
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#include "drv_spi.h"
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void spi_init(SPI_ptr ptr)
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{
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}
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void spi_config(SPI_ptr ptr, SPI_TypeDef *SPI, GPIO_TypeDef *GPIO_MOSI, uint32_t Pin_MOSI, GPIO_TypeDef *GPIO_MISO, uint32_t Pin_MISO, GPIO_TypeDef *GPIO_SCK, uint32_t Pin_SCK,
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uint32_t GPIO_Remap)
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{
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GPIO_InitTypeDef GPIO_InitStructure = {0};
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SPI_InitTypeDef SPI_InitStructure={0};
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DMA_InitTypeDef DMA_InitStructure = {0};
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NVIC_InitTypeDef NVIC_InitStructure = {0};
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uint32_t RCC_Periph = RCC_APB2Periph_SPI1;
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ptr->SPI = SPI;
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ptr->GPIO_MOSI = GPIO_MOSI;
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ptr->GPIO_MISO = GPIO_MISO;
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ptr->GPIO_SCK = GPIO_SCK;
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ptr->Pin_MOSI = Pin_MOSI;
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ptr->Pin_MISO = Pin_MISO;
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ptr->Pin_SCK = Pin_SCK;
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RCC_APB2PeriphClockCmd( RCC_APB2Periph_AFIO, ENABLE );
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if(ptr->SPI == SPI1){RCC_Periph = RCC_APB2Periph_SPI1;RCC_APB2PeriphClockCmd(RCC_Periph, ENABLE);}
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else if(ptr->SPI == SPI2){RCC_Periph = RCC_APB1Periph_SPI2;RCC_APB1PeriphClockCmd(RCC_Periph, ENABLE);}
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//初始化IO口
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//init mosi
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if(ptr->GPIO_MOSI == GPIOA)RCC_Periph = RCC_APB2Periph_GPIOA;
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else if(ptr->GPIO_MOSI == GPIOB)RCC_Periph = RCC_APB2Periph_GPIOB;
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else if(ptr->GPIO_MOSI == GPIOC)RCC_Periph = RCC_APB2Periph_GPIOC;
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else if(ptr->GPIO_MOSI == GPIOD)RCC_Periph = RCC_APB2Periph_GPIOD;
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else if(ptr->GPIO_MOSI == GPIOE)RCC_Periph = RCC_APB2Periph_GPIOE;
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RCC_APB2PeriphClockCmd(RCC_Periph, ENABLE);
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GPIO_InitStructure.GPIO_Pin = ptr->Pin_MOSI;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_Init(ptr->GPIO_MOSI, &GPIO_InitStructure);
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//init miso
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if(ptr->GPIO_MISO == GPIOA)RCC_Periph = RCC_APB2Periph_GPIOA;
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else if(ptr->GPIO_MISO == GPIOB)RCC_Periph = RCC_APB2Periph_GPIOB;
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else if(ptr->GPIO_MISO == GPIOC)RCC_Periph = RCC_APB2Periph_GPIOC;
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else if(ptr->GPIO_MISO == GPIOD)RCC_Periph = RCC_APB2Periph_GPIOD;
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else if(ptr->GPIO_MISO == GPIOE)RCC_Periph = RCC_APB2Periph_GPIOE;
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RCC_APB2PeriphClockCmd(RCC_Periph, ENABLE);
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GPIO_InitStructure.GPIO_Pin = ptr->Pin_MISO;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_Init(ptr->GPIO_MISO, &GPIO_InitStructure);
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//init sck
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if(ptr->GPIO_SCK == GPIOA)RCC_Periph = RCC_APB2Periph_GPIOA;
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else if(ptr->GPIO_SCK == GPIOB)RCC_Periph = RCC_APB2Periph_GPIOB;
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else if(ptr->GPIO_SCK == GPIOC)RCC_Periph = RCC_APB2Periph_GPIOC;
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else if(ptr->GPIO_SCK == GPIOD)RCC_Periph = RCC_APB2Periph_GPIOD;
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else if(ptr->GPIO_SCK == GPIOE)RCC_Periph = RCC_APB2Periph_GPIOE;
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RCC_APB2PeriphClockCmd(RCC_Periph, ENABLE);
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GPIO_InitStructure.GPIO_Pin = ptr->Pin_SCK;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_Init(ptr->GPIO_SCK, &GPIO_InitStructure);
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//init peripheral
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SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
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SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
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SPI_InitStructure.SPI_DataSize = SPI_DataSize_16b;
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SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
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SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
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SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
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SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_64;
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SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_LSB;
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SPI_InitStructure.SPI_CRCPolynomial = 7;
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SPI_Init( ptr->SPI, &SPI_InitStructure );
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//init dma
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//init nvic
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uint8_t NVIC_IRQChannel = USART1_IRQn;
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if(ptr->SPI == SPI1)NVIC_IRQChannel = SPI1_IRQn;
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else if(ptr->SPI == SPI2)NVIC_IRQChannel = SPI2_IRQn;
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NVIC_InitStructure.NVIC_IRQChannel = NVIC_IRQChannel;
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1;
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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SPI_I2S_ITConfig(ptr->SPI, SPI_I2S_IT_RXNE, ENABLE);//读取数据,收到数据
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//SPI_I2S_ITConfig(ptr->SPI, SPI_I2S_IT_IDLE, ENABLE);//读取整包数据（读取fifo）
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SPI_I2S_ITConfig(ptr->SPI, SPI_I2S_IT_TXE, DISABLE);//发送可以不开中断，只要传到dma即可
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SPI_Cmd( ptr->SPI, ENABLE );
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}
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//SPI读写比较特殊，用到再说
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void spi_read(SPI_ptr ptr,unsigned char *buff,const unsigned int len)
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{
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//数字长于2字节就用 DMA，IT，数字短就用阻塞模式
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}
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void spi_write(SPI_ptr ptr,const unsigned char *buff,const unsigned int len)
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{
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GPIO_WriteBit(ptr->GPIO_CS, ptr->Pin_CS, Bit_RESET);
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GPIO_WriteBit(ptr->GPIO_CS, ptr->Pin_CS, Bit_SET);
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}
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