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mx25l320d(flash) 读写测试程序
#include "stm32f10x.h"#include "hw_config.h" /* Private typedef -----------------------------------------------------------*/typedef void (*pFunction)(void);/* Private define ------------------------------------------------------------*//* Private macro -------------------------------------------------------------*/#define ApplicationAddress 0x08003000/* Private variables ---------------------------------------------------------*/uint32_t l_ApplicationAddress = 0x08003000;/* Extern variables ----------------------------------------------------------*/pFunction Jump_To_Application;uint32_t JumpAddress;static u8 fac_us=0; //us延时倍乘数static u16 fac_ms=0; //ms延时倍乘数/*初始化延迟函数*/void delay_init(u8 SYSCLK){ SysTick->CTRL&=0xfffffffb; //选择内部时钟 HCLK/8 fac_us=SYSCLK/8; fac_ms=(u16)fac_us*1000;} /* *@ 延时Nms *@ 注意Nms的范围 *@ Nms<=0xffffff*8/SYSCLK *@ 对72M条件下,Nms<=1864 */void delay_ms(u16 nms){ u32 temp; SysTick->LOAD=(u32)nms*fac_ms; //时间加载 SysTick->VAL =0x00; //清空计数器 SysTick->CTRL=0x01 ; //开始倒数 do { temp=SysTick->CTRL; } while(temp&0x01&&!(temp&(1<<16))); //等待时间到达 SysTick->CTRL=0x00; //关闭计数器 SysTick->VAL =0X00; //清空计数器 } u8 SPI_FLASH_SendByte(u8 byte){ /* 等待SPI发送寄存器里的数据发送结束 */ while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET); /* 发送数据 */ SPI_I2S_SendData(SPI2, byte); /* 等待接收完一字节数据 */ while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET); /* 返回接收到的数据 */ return SPI_I2S_ReceiveData(SPI2);} u8 SPI_FLASH_PP(u32 addr, u8 data){ u32 _addr = addr; /* 发送命令 */ SPI_FLASH_SendByte(0x02); /* 发送地址 */ _addr = (addr >> 16) & 0xff ; SPI_FLASH_SendByte(_addr); _addr = (addr >> 8) & 0xff ; SPI_FLASH_SendByte(_addr); _addr = addr & 0xff; SPI_FLASH_SendByte(_addr); return SPI_FLASH_SendByte(data); }void SPI_FLASH_WREN(){ /* 等待SPI发送寄存器里的数据发送结束 */ while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET); /* 发送命令 */ SPI_I2S_SendData(SPI2, 0x06); /* 等待接收完一字节数据 */ while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET); SPI_I2S_ReceiveData(SPI2);}u8 SPI_FLASH_RDSR(u8 *pStatus_Register){ /* 等待SPI发送寄存器里的数据发送结束 */ while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET); /* 发送命令 */ SPI_I2S_SendData(SPI2, 0x05); /* 等待接收完一字节数据 */ while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET); SPI_I2S_ReceiveData(SPI2); while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET); SPI_I2S_SendData(SPI2, 0xff); while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET); *pStatus_Register = SPI_I2S_ReceiveData(SPI2); return 0;}u8 SPI_FLASH_Read(u32 byte){ /* 发送命令 */ SPI_FLASH_SendByte(0x03); /* 发送地址 */ SPI_FLASH_SendByte(0x0); SPI_FLASH_SendByte(0x0); SPI_FLASH_SendByte(0x0); return SPI_FLASH_SendByte(0xff);} u32 SPI_FLASH_ReadDeviceID(u8 *pManufacturer_ID, u8 *pMemory_type, u8 *pMemory_Density){ // SPI_FLASH_SendByte(0X9F); /* 等待SPI发送寄存器里的数据发送结束 */ while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET); /* 发送数据 */ SPI_I2S_SendData(SPI2, 0X9F); while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET); SPI_I2S_ReceiveData(SPI2); while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET); SPI_I2S_SendData(SPI2, 0XFF); while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET); SPI_I2S_SendData(SPI2, 0XFF); while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET); SPI_I2S_SendData(SPI2, 0XFF); /* Read a byte from the FLASH */ while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET); *pManufacturer_ID = SPI_I2S_ReceiveData(SPI2); while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET); *pMemory_type = SPI_I2S_ReceiveData(SPI2); while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET); *pMemory_Density = SPI_I2S_ReceiveData(SPI2); /* 返回器件地址 */ return 0;} int main(void){ SPI_InitTypeDef SPI_InitStructure; GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; USART_ClockInitTypeDef USART_ClockInitStructure; u8 Manufacturer_ID; u8 Memory_type; u8 Memory_Density; u8 Status_Register; u16 val = 0x30; DATASTREAM_Port_Config();#ifdef SPI2_CONFIG /* Enable SPI2 and GPIO clocks */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); /*!< SPI_FLASH_SPI Periph clock enable */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE); /*将PA5(CLK)配置成复用推挽输出*/ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_Init(GPIOB, &GPIO_InitStructure); /*将PA6(DO)设置成浮空输入 */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14; GPIO_Init(GPIOB, &GPIO_InitStructure); /* 将PA7（DIO）设为浮空输入 */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15; GPIO_Init(GPIOB, &GPIO_InitStructure); /* 将PA4(CS)设为推挽输出 */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_Init(GPIOB, &GPIO_InitStructure); /* 拉高CS，失能芯片，该语句是宏定义，就是置高PA4 */ GPIO_SetBits(GPIOB, GPIO_Pin_12); //SPI_FLASH_CS_HIGH(); /* SPI配置 */ // W25X16: 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. /* 将SPI设为全双工模式 */ SPI_Cmd(SPI2, DISABLE); SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex; /* 将SPI设为主模式*/ SPI_InitStructure.SPI_Mode = SPI_Mode_Master; /*将SPI通信的数据大小设为8位 */ SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; /* 将CLK的高电平设为空闲 */ SPI_InitStructure.SPI_CPOL = SPI_CPOL_High; /* 设置在第二个时钟沿捕获数据 */ SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge; /* 指定NSS信号由软件管理 */ SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; /* SPI_BaudRatePrescaler用来定义波特率预分频的值，这个值用以设置发送和接收的SCK时钟 */ SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_8; /* SPI_FirstBit指定了数据传输从高位还是低位开始 */ SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; /* SPI_CRCPolynomial定义了用于CRC值计算的多项式 */ SPI_InitStructure.SPI_CRCPolynomial = 7; SPI_Init(SPI2, &SPI_InitStructure); /* Enable SPI1 */ SPI_Cmd(SPI2, ENABLE); /*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO | RCC_APB2Periph_USART1 , ENABLE); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //Pushpull out-TX A9 USART1_Tx GPIO_Init(GPIOA, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //In floating in-RX A10 USART1_Rx GPIO_Init(GPIOA, &GPIO_InitStructure); USART_InitStructure.USART_BaudRate = 38400; USART_InitStructure.USART_WordLength = USART_WordLength_8b; USART_InitStructure.USART_StopBits = USART_StopBits_1; USART_InitStructure.USART_Parity = USART_Parity_No; USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; USART_ClockInitStructure.USART_Clock = USART_Clock_Disable; USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low; USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge; USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable; USART_ClockInit(USART1, &USART_ClockInitStructure); USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); //usart1 interrupt enable USART_Init(USART1, &USART_InitStructure); USART_Cmd(USART1, ENABLE); /* printf first test flag */ USART_SendData(USART1, val); while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET); GPIO_ResetBits(GPIOB, GPIO_Pin_12); val = SPI_FLASH_ReadDeviceID(&Manufacturer_ID, &Memory_type, &Memory_Density); GPIO_SetBits(GPIOB, GPIO_Pin_12); /* printf resoult */ USART_SendData(USART1, Manufacturer_ID); while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET); USART_SendData(USART1, Memory_type); while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET); USART_SendData(USART1, Memory_Density); while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET); // GPIO_ResetBits(GPIOB, GPIO_Pin_12);// val = SPI_FLASH_Read(0x00000000);// GPIO_SetBits(GPIOB, GPIO_Pin_12); /* printf resoult */// USART_SendData(USART1, val); // while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET); GPIO_ResetBits(GPIOB, GPIO_Pin_12); SPI_FLASH_WREN(); GPIO_SetBits(GPIOB, GPIO_Pin_12);// GPIO_ResetBits(GPIOB, GPIO_Pin_12); // val = SPI_FLASH_RDSR(&Status_Register);// GPIO_SetBits(GPIOB, GPIO_Pin_12);// // /* printf resoult */// USART_SendData(USART1, Status_Register); // while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET); // GPIO_ResetBits(GPIOB, GPIO_Pin_12); // SPI_FLASH_PP(0x00000000, 0x55);// GPIO_SetBits(GPIOB, GPIO_Pin_12); val = 0; GPIO_ResetBits(GPIOB, GPIO_Pin_12); val = SPI_FLASH_Read(0x00000000); GPIO_SetBits(GPIOB, GPIO_Pin_12); /* printf resoult */ USART_SendData(USART1, val); while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET); #endif // delay_init(72); while(1) {// delay_ms(1500); // DATASTREAM_Port_Write(data_received, usart1_rx_data_counts); } /*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/ /* 初始化使能进入DFU模式的按钮 */ DFU_Button_Config(); /* 检查按钮是否被按下 */ if(DFU_Button_Read() != 0x00) { /* 测试用户程序是否以0x20000000为起始标志(用户程序的中断向量表前是栈地址，在RAM中，RAM是从0x20000000位置起始) */ if (((*(__IO uint32_t*)l_ApplicationAddress) & 0x2FFE0000 ) == 0x20000000) { /* 跳转到用户程序 */ JumpAddress = *(__IO uint32_t*) (ApplicationAddress + 4); Jump_To_Application = (pFunction) JumpAddress; /* 初始化用户程序栈 */ __set_MSP(*(__IO uint32_t*) ApplicationAddress); Jump_To_Application(); } } /* Enter DFU mode */ while(1); }
mx25l320d(flash) 读写测试程序
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