STM32模拟、硬件SPI驱动W25X系列(W25X40-W25X16)

/******************** (C) COPYRIGHT ******************** * 文件名 ：spi_flash.c * 描述 ：spi 底层应用函数库 * 硬件连接 ---------------------------- * | PC8-SPI2-NSS : W25X40-CS | * | PD14-SPI2-SCK : W25X40-CLK | * | PC7-SPI2-MISO : W25X40-DO | * | PD13-SPI2-MOSI : W25X40-DIO | * | PC6-WRITE : W25X40-DIO | * | PD15-HOLD : W25X40-DIO | * ---------------------------- * 库版本 ：ST3.0.0 * * 作者 ： * 博客 ： **********************************************************************************/ #include "spi_flash.h" #include "gpio.h" /* Private typedef -----------------------------------------------------------*/ //#define SPI_FLASH_PageSize 4096 #define SPI_FLASH_PageSize 256 #define SPI_FLASH_PerWritePageSize 256 /* Private define ------------------------------------------------------------*/ #define W25X_WriteEnable 0x06 #define W25X_WriteDisable 0x04 #define W25X_ReadStatusReg 0x05 #define W25X_WriteStatusReg 0x01 #define W25X_ReadData 0x03 #define W25X_FastReadData 0x0B #define W25X_FastReadDual 0x3B #define W25X_PageProgram 0x02 #define W25X_BlockErase 0xD8 #define W25X_SectorErase 0x20 #define W25X_ChipErase 0xC7 #define W25X_PowerDown 0xB9 #define W25X_ReleasePowerDown 0xAB #define W25X_DeviceID 0xAB #define W25X_ManufactDeviceID 0x90 #define W25X_JedecDeviceID 0x9F #define WIP_Flag 0x01 /* Write In Progress (WIP) flag */ #define Dummy_Byte 0xFF void SPI_FLASH_Write_Protect_ENABLE(void)//flash 打开写保护 { SPI_FLASH_Write_Protect_Assert(); } void SPI_FLASH_Write_Protect_DISABLE(void)//flash 关闭写保护 { SPI_FLASH_Write_Protect_Deassert(); } void SPI_FLASH_Hold_ENABLE(void)//flash HOLD ENABLE { SPI_FLASH_Hold_Assert(); } void SPI_FLASH_Hold_DISABLE(void)//flash HOLD DISABLE { SPI_FLASH_Hold_Deassert(); } /******************************************************************************* * Function Name : SPI_FLASH_Init * Description : Initializes the peripherals used by the SPI FLASH driver. * Input : None * Output : None * Return : None *******************************************************************************/ void SPI_FLASH_Init(void) { #ifdef _BOARD //DEMO Board GpioInitTypeDef gpioInitStr; // 初始化模拟SPI的IO口 // SPI_FLASH_SCK_S PA5 gpioInitStr.GpioPin = SPI_FLASH_SCK_PIN_S; gpioInitStr.GpioSpeed = GpioSpeed2MHz; gpioInitStr.GpioMode = Gpio_Mode_Out_PP; GpioInit(SPI_FLASH_SCK_PORT_S, &gpioInitStr); // SPI_FLASH_MOSI_S PA7 gpioInitStr.GpioPin = SPI_FLASH_MOSI_PIN_S; GpioInit(SPI_FLASH_MOSI_PORY_S, &gpioInitStr); // SPI_FLASH_NSS_S PA4 gpioInitStr.GpioPin = SPI_FLASH_NSS_PIN_S; GpioInit(SPI_FLASH_NSS_PORT_S, &gpioInitStr); // SPI_FLASH_MISO_S PA6 gpioInitStr.GpioPin = SPI_FLASH_MISO_PIN_S; gpioInitStr.GpioMode = Gpio_Mode_IN_FLOATING; //gpioInitStr.GpioMode = Gpio_Mode_IPU; GpioInit(SPI_FLASH_MISO_PORY_S, &gpioInitStr); #else #ifdef SPI_FLASH_HAL SPI_InitTypeDef SPI_InitStructure; GPIO_InitTypeDef GPIO_InitStructure; /* Enable SPI1 and GPIO clocks */ /*!< SPI_FLASH_SPI_CS_GPIO, SPI_FLASH_SPI_MOSI_GPIO, SPI_FLASH_SPI_MISO_GPIO, SPI_FLASH_SPI_DETECT_GPIO and SPI_FLASH_SPI_SCK_GPIO Periph clock enable */ // spi2管脚重映射 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD, ENABLE); /*!< SPI_FLASH_SPI Periph clock enable */ RCC_APB2PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE); /*!< AFIO Periph clock enable */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE); /*!< Configure SPI_FLASH_SPI pins: SCK */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_Init(GPIOD, &GPIO_InitStructure); /*!< Configure SPI_FLASH_SPI pins: MISO */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7; GPIO_Init(GPIOC, &GPIO_InitStructure); /*!< Configure SPI_FLASH_SPI pins: MOSI */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13; GPIO_Init(GPIOD, &GPIO_InitStructure); /*!< Configure SPI_FLASH_SPI_CS_PIN pin: SPI_FLASH Card CS pin */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_Init(GPIOC, &GPIO_InitStructure); /* Deselect the FLASH: Chip Select high */ SPI_FLASH_CS_HIGH(); /* SPI1 configuration */ // W25X40: data input on the DIO pin is sampled on the rising edge of the CLK. // Data on the DO and DIO pins are clocked out on the falling edge of CLK. 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; //高位先发 SPI_InitStructure.SPI_CRCPolynomial = 7; SPI_Init(SPI2, &SPI_InitStructure); /* Enable SPI1 */ SPI_Cmd(SPI2, ENABLE); #else GpioInitTypeDef gpioInitStr; // 初始化模拟SPI的IO口 // SPI_FLASH_SCK_S PD14 gpioInitStr.GpioPin = SPI_FLASH_SCK_PIN_S; gpioInitStr.GpioSpeed = GpioSpeed2MHz; gpioInitStr.GpioMode = Gpio_Mode_Out_PP; GpioInit(SPI_FLASH_SCK_PORT_S, &gpioInitStr); // SPI_FLASH_MOSI_S PD13 gpioInitStr.GpioPin = SPI_FLASH_MOSI_PIN_S; GpioInit(SPI_FLASH_MOSI_PORY_S, &gpioInitStr); // SPI_FLASH_NSS_S PC8 gpioInitStr.GpioPin = SPI_FLASH_NSS_PIN_S; GpioInit(SPI_FLASH_NSS_PORT_S, &gpioInitStr); // SPI_FLASH_MISO_S PC7 gpioInitStr.GpioPin = SPI_FLASH_MISO_PIN_S; gpioInitStr.GpioMode = Gpio_Mode_IN_FLOATING; //gpioInitStr.GpioMode = Gpio_Mode_IPU; GpioInit(SPI_FLASH_MISO_PORY_S, &gpioInitStr); #endif GPIO_InitTypeDef GPIO_InitStructure; RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOD, ENABLE); //Write_Protect PC6 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOC, &GPIO_InitStructure); //Hold PD15 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOD, &GPIO_InitStructure); SPI_FLASH_Write_Protect_DISABLE();//flash 关闭写保护 SPI_FLASH_Hold_DISABLE();//flash HOLD DISABLE #endif } /******************************************************************************* * Function Name : SPI_FLASH_SectorErase * Description : Erases the specified FLASH sector. * Input : SectorAddr: address of the sector to erase. * Output : None * Return : None *******************************************************************************/ void SPI_FLASH_SectorErase(u32 SectorAddr) { /* Send write enable instruction */ SPI_FLASH_WriteEnable(); SPI_FLASH_WaitForWriteEnd(); /* Sector Erase */ /* Select the FLASH: Chip Select low */ SPI_FLASH_CS_LOW(); /* Send Sector Erase instruction */ SPI_FLASH_SendByte(W25X_SectorErase); /* Send SectorAddr high nibble address byte */ SPI_FLASH_SendByte((SectorAddr & 0xFF0000) >> 16); /* Send SectorAddr medium nibble address byte */ SPI_FLASH_SendByte((SectorAddr & 0xFF00) >> 8); /* Send SectorAddr low nibble address byte */ SPI_FLAS