usb_pd-master_pd_pd源码_pd协议_dawnd82_usbpd_源码

/******************************************************************************** * * $Workfile: TCC_M25P80.c $ * * Copyright (C) 2012-2013 All Rights Reserved. * * Function: SPI initialize. * * Language: C * * $Revision: A1 $ * * $Author: Gongming Song $ * * $Log: $ * *******************************************************************************/ #include "TCC_M25P80.h" extern u32 currentAddress; #define ADDRESS_STORAGE_LOCATION 0x0000 u8 addressBuffer[4]; #define M25P80_CS0() GPIO_ResetBits(GPIOA,GPIO_Pin_7) #define M25P80_CS1() GPIO_SetBits(GPIOA,GPIO_Pin_7) void MP25P80_GPIO_Config() { GPIO_InitTypeDef GPIO_InitStructure; // ??GPIOB?GPIOA?? RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB | RCC_AHB1Periph_GPIOA, ENABLE); // ??PB13?PB14?PB15?SPI2???? GPIO_PinAFConfig(GPIOB, GPIO_PinSource13, GPIO_AF_SPI2); // SCK GPIO_PinAFConfig(GPIOB, GPIO_PinSource14, GPIO_AF_SPI2); // MISO GPIO_PinAFConfig(GPIOB, GPIO_PinSource15, GPIO_AF_SPI2); // MOSI // ??SPI?? GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; GPIO_Init(GPIOB, &GPIO_InitStructure); // ??PA7?CS?? GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; GPIO_Init(GPIOA, &GPIO_InitStructure); GPIO_SetBits(GPIOA, GPIO_Pin_7); // ??????? } void SPI_Configuration() { SPI_InitTypeDef SPI_InitStructure; // ??SPI2?? RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE); // ??SPI2?? SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex; SPI_InitStructure.SPI_Mode = SPI_Mode_Master; SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; SPI_InitStructure.SPI_CPOL = SPI_CPOL_High; // ??????? SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge; // ???????????? SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; // ????CS SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_16; SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; SPI_InitStructure.SPI_CRCPolynomial = 7; SPI_Init(SPI2, &SPI_InitStructure); SPI_Cmd(SPI2, ENABLE); // ??SPI2 } void M25P80_INIT(void) { // u8 addressBuffer[4]; MP25P80_GPIO_Config(); SPI_Configuration(); M25P80_Read_Bytes(ADDRESS_STORAGE_LOCATION, addressBuffer, 4); // currentAddress = (addressBuffer[0] << 24) | (addressBuffer[1] << 16) | (addressBuffer[2] << 8) | addressBuffer[3]; if (currentAddress == 0) { currentAddress = 0x0010; } // SPI_InitTypeDef SPI_InitStructure; // GPIO_InitTypeDef GPIO_InitStructure; // /* ??GPIO?SPI?? */ // FLASH_SPI_APBxClock_FUN ( FLASH_SPI_CLK, ENABLE ); // FLASH_SPI_SCK_APBxClock_FUN ( FLASH_SPI_SCK_CLK, ENABLE ); // FLASH_SPI_MISO_APBxClock_FUN ( FLASH_SPI_MISO_CLK, ENABLE ); // FLASH_SPI_MOSI_APBxClock_FUN ( FLASH_SPI_MOSI_CLK, ENABLE ); // FLASH_SPI_CS_APBxClock_FUN ( FLASH_SPI_CS_CLK, ENABLE ); // /* ??SPI????:SCK ???? */ // GPIO_InitStructure.GPIO_Pin = FLASH_SPI_SCK_PIN; // GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; // GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; // GPIO_Init(FLASH_SPI_SCK_PORT, &GPIO_InitStructure); // /* ??SPI????:MISO ?????????? */ // GPIO_InitStructure.GPIO_Pin = FLASH_SPI_MISO_PIN; // GPIO_Init(FLASH_SPI_MISO_PORT, &GPIO_InitStructure); // /* ??SPI????:MISO ?????????? */ // GPIO_InitStructure.GPIO_Pin = FLASH_SPI_MOSI_PIN; // GPIO_Init(FLASH_SPI_MOSI_PORT, &GPIO_InitStructure); // /* ??SPI????:CS ??Flash???? */ // GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; // GPIO_InitStructure.GPIO_Pin = FLASH_SPI_CS_PIN; // GPIO_Init(FLASH_SPI_CS_PORT, &GPIO_InitStructure); // /* ??????Flash,???????Flash?????? */ // FLASH_SPI_CS_DISABLE(); // SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex; // SPI_InitStructure.SPI_Mode = SPI_Mode_Master; // SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; // SPI_InitStructure.SPI_CPOL = SPI_CPOL_High; // SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge; // SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; // SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4; // SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; // SPI_InitStructure.SPI_CRCPolynomial = 7; // SPI_Init(SPI1 , &SPI_InitStructure); // /* ??SPI?? */ // SPI_Cmd(SPI1 , ENABLE); // u8 addressBuffer[4]; // M25P80_Read_Bytes(ADDRESS_STORAGE_LOCATION, addressBuffer, 4); // currentAddress = (addressBuffer[0] << 24) | (addressBuffer[1] << 16) | (addressBuffer[2] << 8) | addressBuffer[3]; // if (currentAddress == 0) { // currentAddress = 0x0000; // } } /******************************************************************************* * Function Name : SPI_FLASH_SendByte * Description : Sends a byte through the SPI interface and return the byte * received from the SPI bus. * Input : byte : byte to send. * Output : None * Return : The value of the received byte. * 8Mbit = 1,048,576 bytes = 16 sectors (512 Kbits, 65536 bytes each) = * 4096 pages (256 bytes each) * 1sector = 256 page * address range 00000 ~ fffffh *******************************************************************************/ u16 SPI_FLASH_SendByte(u8 byte) { /* Loop while DR register in not emplty */ while(SPI_I2S_GetFlagStatus(TCC_SPI, SPI_I2S_FLAG_TXE) == RESET); /* Send byte through the SPI1 peripheral */ SPI_I2S_SendData(TCC_SPI, (uint16_t)byte); /* Wait to receive a byte */ while(SPI_I2S_GetFlagStatus(TCC_SPI, SPI_I2S_FLAG_RXNE) == RESET); /* Return the byte read from the SPI bus */ return SPI_I2S_ReceiveData(TCC_SPI); } /******************************************************************************* * Function Name : void M25P80_CMD1B(u8 cmd) * Description : 发送一个字节指令 * This function must be used only if the Start_Read_Sequence * function has been previously called. * Input : None * Output : None * Return : Byte Read from the SPI Flash. *******************************************************************************/ void M25P80_CMD1B(u8 cmd) { M25P80_CS0(); // GPIO_ResetBits(GPIOA,GPIO_Pin_7); //FLASH_CS=0; SPI_FLASH_SendByte(cmd); M25P80_CS1(); //GPIO_SetBits(GPIOA,GPIO_Pin_7); //FLASH_CS=1; } /******************************************************************************* * Function Name : u8 M25P80_CMD1B_READ1B(u8 cmd) * Description : 发送一个字节指令并接受返回值 * This function must be used only if the Start_Read_Sequence * function has been previously called. * Input : None * Output : None * Return : Byte Read from the SPI Flash. *******************************************************************************/ u16 M25P80_CMD1B_READ1B(u16 cmd) { u16 data; M25P80_CS0(); //GPIO_ResetBits(GPIOA,GPIO_Pin_7); //FLASH_CS=0; SPI_FLASH_SendByte(cmd); data = SPI_FLASH_SendByte(0xFF); M25P80_CS1(); //GPIO_SetBits(GPIOA,GPIO_Pin_7); //FLASH_CS=1; return data; } /******************************************************************************* * Function Name : void M25P80_CMD1B_S1B(u16 cmd , u16 data) * Description : 写一指令与一数据 * Input : None * Output : None * Return : Byte Read from the SPI Flash. *******************************************************************************/ void M25P80_CMD1B_S1B(u16 cmd , u16 data) { M25P80_CS0(); //GPIO_ResetBits(GPIOA,GPIO_Pin_7); //FLASH_CS=0; SPI_FLASH_SendByte(cmd); SPI_FLASH_SendByte(data); M25P80_CS1(); //GPIO_SetBits(GPIOA,GPIO_Pin_7); //FLASH_CS=1; } /******************************************************************************* * Function Name : void M25P80_WP_En(void) * Description : 写使能 * 使能寄存器中的WEL位 * Input : None * Output : None * Return : None *******************************************************************************/ void M25P80_Write_En(void) { u16 sta; //清除 Block Protect位：PB0，PB1，PB2，即取消所有区域保护 sta = M25P80_CMD1B_READ1B(RDSR) & (~0x1C); M25P80_CMD1B_S1B(WRSR, sta); // Protected Area Upper sixteenth (Sector 15)以及WEL位 M25P80_CMD1B(WREN); while(!(M25P80_CMD1B_READ1B(RDSR) & 0x02)); sta = M25P80_CMD1B_READ1B(RDSR); } /******************************************************************************* * Function Name : void M25P80_WP_En(void) * Description : 写失能 * 使能寄存器中的WEL位 * Input : None * Output : None * Return : None *******************************************************************************/ void M25P80_WP_En(void) { u16 sta; //添加PB0，PB1，PB2的保护位 sta = M25P80_CMD1B_READ1B(RDSR) | 0x1c; M25P80_CMD1B_S1B(WRSR, sta); M25P80_CMD1B(WRDI); } /******************************************************************************* * Function Name : u8 M25P80_Busy(void) * Description : 状态检测 * 最低位WIP为1则正在工作 * Input : None * Output : None * Return : return (sta & 0x01); *******************************************************************************/ u8 M25P80_Busy(void) { u8 sta; sta = M25P80_CMD1B_READ1B(RDSR); return (sta & 0x01); } /******************************************************************************* * Function Name : void M25P80_Section_Erase(u32 addr) * Description : 位擦除 * 擦除FLASH固定地址的数据 * Input : None * Output : None * Return : None *******************************************************************************/ void M25P80_Section_Erase(u32 addr) { u8 ad[3] ; // ad[0] = (addr & 0x00ff0000) ; // ad[1] = (addr & 0x0000ff00) >> 8; // ad[2] = (addr & 0x000000ff) >> 16; ad[0] = (addr >> 16) & 0xFF; // ?8? ad[1] = (addr >> 8) & 0xFF; // ?8? ad[2] = addr & 0xFF; // ?8? M25P80_Write_En(); M25P80_CS0(); //GPIO_ResetBits(GPIOA,GPIO_Pin_7); //FLASH_CS=0; SPI_FLASH_SendByte(SECTOR_ERASER); SPI_FLASH_SendByte(ad[0]); SPI_FLASH_SendByte(ad[1]); SPI_FLASH_SendByte(ad[2]); M25P80_CS1(); //GPIO_SetBits(GPIOA,GPIO_Pin_7); //FLASH_CS=1; while(M25P80_Busy()); while(M25P80_Busy()); while(M25P80_Busy()); M25P80_CMD1B(WRDI); //M25P80_WP_En(); while(M25P80_Busy()); // ?????? while(M25P80_Busy()); } /******************************************************************************* * Function Name : void M25P80_Bulk_Erase(void) * Description : 全扇区擦除 * 格式化8MFLASH * Input : None * Output : None * Return : None *******************************************************************************/ void M25P80_Bulk_Erase(void) { M25P80_Write_En(); M25P80_CMD1B(BULK_ERASER); while(M25P80_Busy()); M25P80_CMD1B(WRDI); //M25P80_WP_En(); while(M25P80_Busy()); // ?????? while(M25P80_Busy()); } /******************************************************************************* * Function Name : void M25P80_Write_1Byte(u32 addr , u8 data) * Description : 写数据 * 写固定地址的一位数据 * Input : None * Output : None * Return : None *******************************************************************************/ void M25P80_Write_1Byte(u32 addr , u8 data) { u8 ad[3] ; // ad[0] = (addr & 0x00ff0000); // ad[1] = (addr & 0x0000ff00) >> 8; // ad[2] = (addr & 0x000000ff) >> 16; ad[0] = (addr >> 16) & 0xFF; // ?8? ad[1] = (addr >> 8) & 0xFF; // ?8? ad[2] = addr & 0xFF; // ?8? M25P80_Write_En(); M25P80_CS0(); //GPIO_ResetBits(GPIOA,GPIO_Pin_7); //FLASH_CS=0; SPI_FLASH_SendByte(PAGE_PROG); SPI_FLASH_SendByte(ad[0]); SPI_FLASH_SendByte(ad[1]); SPI_FLASH_SendByte(ad[2]); SPI_FLASH_SendByte(data); M25P80_CS1(); //GPIO_SetBits(GPIOA,GPIO_Pin_7); //FLASH_CS=1; while(M25P80_Busy()); M25P80_CMD1B(WRDI); //M25P80_WP_En(); } /******************************************************************************* * Function Name : void M25p80_Write_Bytes(u32 addr , u8* wr_buf_p , u16 no) * Description : 写数据 * 多字节写入数据 * Input : u32 addr启示地址 , u8* wr_buf_p写入数据初始位指针 , * u16 no写入字节个数 * Output : None * Return : None *******************************************************************************/ void M25P80_Write_Bytes(u32 addr , u8* wr_buf_p , u16 no) { u8 ad[3] ; // ad[0] = (addr & 0x00ff0000) ; // ad[1] = (addr & 0x0000ff00) >> 8; // ad[2] = (addr & 0x000000ff) >> 16; // ad[0] = (addr >> 16) & 0xFF; // ?8? ad[1] = (addr >> 8) & 0xFF; // ?8? ad[2] = addr & 0xFF; // ?8? M25P80_Write_En(); M25P80_CS0(); //GPIO_ResetBits(GPIOA,GPIO_Pin_7); //FLASH_CS=0; SPI_FLASH_SendByte(PAGE_PROG); SPI_FLASH_SendByte(ad[0]); SPI_FLASH_SendByte(ad[1]); SPI_FLASH_SendByte(ad[2]); for(; no > 0; no--) { SPI_FLASH_SendByte(*wr_buf_p); wr_buf_p++; } M25P80_CS1(); //GPIO_SetBits(GPIOA,GPIO_Pin_7); //FLASH_CS=1; while(M25P80_Busy()); M25P80_CMD1B(WRDI); //M25P80_WP_En(); } /******************************************************************************* * Function Name : u8 M25P80_Read_1Byte(u32 addr ) * Description : 读数据 * 读固定地址的一位数据 * Input : None * Output : None * Return : return data; *******************************************************************************/ u8 M25P80_Read_1Byte(u32 addr ) { u8 ad[3] , data; // ad[0] = (addr & 0x00ff0000) ; // ad[1] = (addr & 0x0000ff00) >> 8; // ad[2] = (addr & 0x000000ff) >> 16; ad[0] = (addr >> 16) & 0xFF; // ?8? ad[1] = (addr >> 8) & 0xFF; // ?8? ad[2] = addr & 0xFF; // ?8? //M25P80_CMD1B(WRDI); M25P80_CS0(); //GPIO_ResetBits(GPIOA,GPIO_Pin_7); //FLASH_CS=0; SPI_FLASH_SendByte(READ); SPI_FLASH_SendByte(ad[0]); SPI_FLASH_SendByte(ad[1]); SPI_FLASH_SendByte(ad[2]); data = SPI_FLASH_SendByte(0xff); M25P80_CS1(); //GPIO_SetBits(GPIOA,GPIO_Pin_7); //FLASH_CS=1; return data; } /******************************************************************************* * Function Name : void M25P80_Read_Bytes(u32 addr , u8* re_buf_p , u16 no) * Description : 读数据 * 读固定地址的N位数据 * Input : u32 addr地址 , u8* re_buf_p存放数据缓冲指针 * , u16 no读取数据个数N * Output : None * Return : return data; *******************************************************************************/ void M25P80_Read_Bytes(u32 addr , u8* re_buf_p , u16 no) { u8 ad[3] ; // ad[0] = (addr & 0x00ff0000) ; // ad[1] = (addr & 0x0000ff00) >> 8; // ad[2] = (addr & 0x000000ff) >> 16; ad[0] = (addr >> 16) & 0xFF; // ?8? ad[1] = (addr >> 8) & 0xFF; // ?8? ad[2] = addr & 0xFF; // ?8? //M25P80_CMD1B(WRDI); //M25P80_Write_En(); M25P80_CMD1B(WREN); M25P80_CS0(); //GPIO_ResetBits(GPIOA,GPIO_Pin_7); //FLASH_CS=0; SPI_FLASH_SendByte(READ); SPI_FLASH_SendByte(ad[0]); SPI_FLASH_SendByte(ad[1]); SPI_FLASH_SendByte(ad[2]); for(; no > 0; no--) *re_buf_p++ = SPI_FLASH_SendByte(0xff); M25P80_CS1(); //GPIO_SetBits(GPIOA,GPIO_Pin_7); //FLASH_CS=1; } /******************************************************************************* * Function Name :WriteDataToM25P80(u8* data, u16 length) * Description : * Input : * * Output : None * Return : return data; *******************************************************************************/ u32 WriteDataToM25P80(u8* data, u16 length) { // PAGE ALINE u32 startAddress = currentAddress; u32 page_size = 256; u32 page_offset = currentAddress % page_size; u16 remainingData; // u8 addressBuffer[4]; // if (page_offset != 0) { remainingData = page_size - page_offset; if (remainingData > length) { remainingData = length; } M25P80_Write_Bytes(currentAddress, data, remainingData); currentAddress += remainingData; length -= remainingData; data += remainingData; } // while (length >= page_size) { M25P80_Write_Bytes(currentAddress, data, page_size); currentAddress += page_size; length -= page_size; data += page_size; } // if (length > 0) { M25P80_Write_Bytes(currentAddress, data, length); currentAddress += length; } // ???????M25P80????? // u8 addressBuffer[4]; addressBuffer[0] = (currentAddress >> 24) & 0xFF; addressBuffer[1] = (currentAddress >> 16) & 0xFF; addressBuffer[2] = (currentAddress >> 8) & 0xFF; addressBuffer[3] = currentAddress & 0xFF; M25P80_Write_Bytes(ADDRESS_STORAGE_LOCATION, addressBuffer, 4); // M25P80_Write_Bytes(currentAddress, addressBuffer, 4); return startAddress; } /******************************************************************************* * Function Name :ReadAllDataFromM25P80 * Description : read all data in the chip * Input : * Output : None * Return : return data; *******************************************************************************/ //#define M25P80_SIZE 0x800000 // 8MB size of M25P80 void ReadAllDataFromM25P80(u8* buffer) { u32 addr; for (addr = 0; addr < M25P80_SIZE; addr += 256) { M25P80_Read_Bytes(addr, &buffer[addr], 256); } } u8 M25P80_ReadID(void) { u8 id; M25P80_CS0(); SPI_FLASH_SendByte(0x9F); // ?ID?? id = SPI_FLASH_SendByte(0xFF); M25P80_CS1(); return id; } 在这个m25p80的驱动程序中，这个WriteDataToM25P80函数是否能够正常使用