其他外设历程是没有的，需要自己移植和调试：
原github地址为： https://github.com/Samplecode-MM32
spi驱动在历程中有，调试一下就能OK。
然后可以在flash中移植一个小型的文件系统。
代码如下：
#include "spi.h"/******************************************************************************************************** **function: SPI_WriteRead **@brief SPI2 read and write functions ** **@param SendData : SPI2 read or write data ** **@param WriteFlag : SPI2 read or write flag ** **@return SPI2->RXREG : SPI2 received data ********************************************************************************************************/ unsigned char SPI_WriteRead(unsigned char SendData, unsigned char WriteFlag) //porting api { SPI1->TXREG = SendData; while (!(SPI1->CSTAT & SPI_FLAG_TXEPT)); while (!(SPI1->CSTAT & SPI_FLAG_RXAVL)); return SPI1->RXREG; } /******************************************************************************************************** **function: SPI_CS_Enable_ **@brief SPI2 CS enable ** **@return None. ********************************************************************************************************/ void SPI_CS_Enable_(void) //porting api { //SPI2->SCSR &= SPI_CS_BIT0; GPIO_ResetBits(GPIOD, GPIO_Pin_2); } /******************************************************************************************************** **function: SPI_CS_Disable_ **@brief SPI2 CS disable ** **@return None. ********************************************************************************************************/ void SPI_CS_Disable_(void) //porting api { //SPI2->SCSR |= ~SPI_CS_BIT0; GPIO_SetBits(GPIOD, GPIO_Pin_2); } /******************************************************************************************************** **function: SPIM_TXEn **@brief SPI2 tx enable ** **@param SPIx ：spi selection.such as SPI1 , SPI2 ** **@return None. ********************************************************************************************************/ void SPIM_TXEn(SPI_TypeDef *SPIx) { //Transmit Enable bit TXEN SPI_BiDirectionalLineConfig(SPIx, SPI_Direction_Tx); } /******************************************************************************************************** **function: SPIM_TXDisable **@brief SPI2 tx disable ** **@param SPIx ：spi selection.such as SPI1 , SPI2 ** **@return None. ********************************************************************************************************/ void SPIM_TXDisable(SPI_TypeDef *SPIx) { //disable TXEN SPI_BiDirectionalLineConfig(SPIx, SPI_Disable_Tx); } /******************************************************************************************************** **function: SPIM_RXEn **@brief SPI2 rx enable. ** **@param SPIx ：spi selection.such as SPI1 , SPI2. ** **@return None. ********************************************************************************************************/ void SPIM_RXEn(SPI_TypeDef *SPIx) { //enable RXEN SPI_BiDirectionalLineConfig(SPIx, SPI_Direction_Rx); } /******************************************************************************************************** **function: SPIM_RXDisable **@brief SPI2 rx disable. ** **@param SPIx ：spi selection.such as SPI1 , SPI2. ** **@return None. ********************************************************************************************************/ void SPIM_RXDisable(SPI_TypeDef *SPIx) { //disable RXEN SPI_BiDirectionalLineConfig(SPIx, SPI_Disable_Rx); } /******************************************************************************************************** **function: SPIMReadWriteByte **@brief SPI2 read and write functions ** **@param SPIx : SPI2 selection. ** **@param spi_baud_div ： Set the SPI transmission. ** **@return SPI_ReceiveData. ********************************************************************************************************/ unsigned int SPIMReadWriteByte(SPI_TypeDef *SPIx, unsigned char tx_data) { SPI_SendData(SPIx, tx_data); while (1) { if (SPI_GetFlagStatus(SPIx, SPI_FLAG_TXEPT)) { break; } } while (1) { if (SPI_GetFlagStatus(SPIx, SPI_FLAG_RXAVL)) { return SPI_ReceiveData(SPIx); } } } /******************************************************************************************************** **function: SPIM_Init **@brief This function is the spi initialization function. Configure gpio and spi in this function. ** **@param SPIx : SPI2 selection. ** **@param spi_baud_div ： Set the SPI transmission. ** **@return None. ********************************************************************************************************/ void SPIM_Init(unsigned short spi_baud_div) { SPI_InitTypeDef SPI_InitStructure; GPIO_InitTypeDef GPIO_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1 | RCC_APB2Periph_AFIO, ENABLE); //SPI1 clk enable RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOA, ENABLE); GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable, ENABLE); GPIO_PinRemapConfig(GPIO_Remap_SPI1, ENABLE); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_Init(GPIOD, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_Init(GPIOB, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_Init(GPIOB, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOB, &GPIO_InitStructure); SPI_CS_Disable_(); SPI_InitStructure.SPI_Mode = SPI_Mode_Master; SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; SPI_InitStructure.SPI_DataWidth = SPI_DataWidth_8b; SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low; // mode0 SPI_CPOL_Low, SPI_CPHA_1Edge; SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge; // mode3 SPI_CPOL_High,SPI_CPHA_2Edge SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; SPI_InitStructure.SPI_BaudRatePrescaler = spi_baud_div; SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; SPI_Init(SPI1, &SPI_InitStructure); SPI_Cmd(SPI1, ENABLE); SPIM_TXEn(SPI1); SPIM_RXEn(SPI1); } /******************************************************************************************************** **function: SPI_WriteBuf **@param pBuf : data ** **@param len : data length ** **@return result ********************************************************************************************************/ unsigned char SPI_WriteBuf(unsigned char reg, unsigned char const *pBuf, unsigned char len) { unsigned char result = 0; unsigned char i; SPI_CS_Enable_(); SPI_WriteRead(reg, 1); for (i = 0; i < len; i++) { SPI_WriteRead(*pBuf++, 1); } SPI_CS_Disable_(); return result; } /******************************************************************************************************** **function: SPI_ReadBuf **@param pBuf : data ** **@param len : data length ** **@return result ********************************************************************************************************/ unsigned char SPI_ReadBuf(unsigned char reg, unsigned char *pBuf, unsigned char len) { unsigned char result = 0; unsigned char i; SPI_CS_Enable_(); result = SPI_WriteRead(reg, 1); for (i = 0; i < len; i++) { *(pBuf + i) = SPI_WriteRead(0xff, 0); } SPI_CS_Disable_(); return result; }
复制代码#ifndef __SPI_H__#define __SPI_H__ #include "sys.h" #define READ 0x03 #define FAST_READ 0x0B #define RDID 0x9F #define WREN 0x06 #define WRDI 0x04 #define SE 0xD8 #define BE 0xC7 #define PP 0x02 #define RDSR 0x05 #define WRSR 0x01 #define DP 0xB9 #define RES 0xAB //#define SPI_INT_MODE //#define SPI_DMA void SPI_CS_Disable_(void); void SPIM_Init(unsigned short spi_baud_div); u8 SPIM_ReadID(SPI_TypeDef *SPIx); void SPIM_WriteEnable(SPI_TypeDef *SPIx); void SPIM_checkStatus(SPI_TypeDef *SPIx); void SPIM_WriteDisable(SPI_TypeDef *SPIx); void SPIM_PageRead(SPI_TypeDef *SPIx, unsigned long address, unsigned char *p, unsigned int number); void SPIM_PageProgram(SPI_TypeDef *SPIx, unsigned long address, unsigned char *p, unsigned int number); void SPIM_SectorErase(SPI_TypeDef *SPIx, unsigned long address); void SPIM_BlockErase(SPI_TypeDef *SPIx); void SPIM_Close(SPI_TypeDef *SPIx); void data_clear(u8 *data, u8 size); #endif
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