SD卡读写SDIO接口整个keil工程带usart调试实测可用

ID:39682 · 发表于 2017-9-7 10:37

亲测SD卡读写SDIO接口可用。
CPU STM32F103ZET6.

所有资料51hei提供下载:

SD卡读写-SDIO接口代码.7z (159.08 KB, 下载次数: 35)

单片机源程序如下:

* File Name : main.c
* Author : Sun68
* Version : V1.0
* Date : 11/11/2009
* Description : 演示将一段字符串写入AT45DB161D的1页中，然后读出并通过USART1传送出去。
字符串：SPI AT45DB161D Example: This is SPI DEMO, 终端上出现这一行字，说明AT45DDB161的读写正常
定义：
USART1
TXD1----- PA9-US1-TX
RXD1----- PA10-US1-RX 速率：115200,n,8,1
SPI2
NSS---PB12-SPI2-NSS
MISO--PB14-SPI2-MISO
MOSI--PB15-SPI2-MOSI
SCK---PB13-SPI2-SCK
*********************************************************************/
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
#include "platform_config.h"
#include "stm32f10x_usart.h"
#include "misc.h"
extern void SPI_Flash_Init(void);
extern u8 SPI_Flash_ReadByte(void);
extern u8 SPI_Flash_SendByte(u8 byte);
extern void FlashPageEarse(u16 page);
extern void FlashPageRead(u16 page,u8 *Data);
extern void FlashPageWrite(u16 page,u8 *Data);
extern void FlashWaitBusy(void);
extern void AT45_RomTo_buf(unsigned char buffer,unsigned int page);
extern u8 AT45_buf_ToRam(unsigned char buffer,unsigned int start_address,unsigned int length);
extern u8 AT45_RamTo_buf(unsigned char buffer,unsigned int start_address,unsigned int length);
extern void AT45_buf_ToRom(unsigned char buffer,unsigned int page);
extern void AT45_page_earse(unsigned int page);
extern unsigned char AT45_buffer[];
/** @addtogroup StdPeriph_Examples
* @{
*/
/** @addtogroup USART_Interrupt
* @{
*/
/* Private typedef -----------------------------------------------------------*/
typedef enum { FAILED = 0, PASSED = !FAILED} TestStatus;
/* Private define ------------------------------------------------------------*/
#define TxBufferSize1 (countof(TxBuffer1) - 1)
#define RxBufferSize1 (countof(TxBuffer1) - 1)
/* Private macro -------------------------------------------------------------*/
#define countof(a) (sizeof(a) / sizeof(*(a)))
/* Private variables ---------------------------------------------------------*/
USART_InitTypeDef USART_InitStructure;
uint8_t TxBuffer1[] = "SPI AT45DB161D Example: This is SPI DEMO, 终端上出现这一行字，说明AT45DDB161的读写正常";
uint8_t RxBuffer1[RxBufferSize1],rec_f;
__IO uint8_t TxCounter1 = 0x00;
__IO uint8_t RxCounter1 = 0x00;
uint8_t NbrOfDataToTransfer1 = TxBufferSize1;
uint8_t NbrOfDataToRead1 = RxBufferSize1;
__IO TestStatus TransferStatus1 = FAILED;
/* Private function prototypes -----------------------------------------------*/
void RCC_Configuration(void);
void GPIO_Configuration(void);
void NVIC_Configuration(void);
void Delay(__IO uint32_t nCount);
void USART_OUT(USART_TypeDef* USARTx, uint8_t *Data,uint16_t Len);
TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength);
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStruct;
USART_ClockInitTypeDef USART_ClockInitStruct;
int16_t USART_FLAG;
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program
* @param None
* @retval : None
*/
int main(void)
{
uint8_t a=0;
uint16_t i=0;
/* System Clocks Configuration */
RCC_Configuration();
/* NVIC configuration */
NVIC_Configuration();
/* Configure the GPIO ports */
GPIO_Configuration();
/* USART1 configuration ------------------------------------------------------*/
/* USART and USART2 configured as follow:
- BaudRate = 115200 baud
- Word Length = 8 Bits
- One Stop Bit
- No parity
- Hardware flow control disabled (RTS and CTS signals)
- Receive and transmit enabled
*/
USART_InitStructure.USART_BaudRate = 115200;
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;
/* Configure USART1 */
USART_Init(USART1, &USART_InitStructure);
/* Enable USART1 Receive and Transmit interrupts */
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
USART_ITConfig(USART1, USART_IT_TXE, ENABLE);
/* Enable the USART1 */
USART_Cmd(USART1, ENABLE);
SPI_Flash_Init();
GPIO_SetBits(GPIOB, GPIO_Pin_5);
for(i=0; i<TxBufferSize1;i++) AT45_buffer[i]=TxBuffer1[i];
AT45_RamTo_buf(1,0,TxBufferSize1);
AT45_buf_ToRom(1,1); //1区to一页
AT45_RomTo_buf(1,1); //1页to1区
AT45_buf_ToRam(1,0,TxBufferSize1);
//GPIO_SetBits(GPIOB, GPIO_Pin_5); while(1);
//GPIO_ResetBits(GPIOB, GPIO_Pin_5);
a=0;
for(i=0; i<TxBufferSize1;i++){
if(AT45_buffer[i]==TxBuffer1[i]) a=1;
else {a=0; i=TxBufferSize1;}
}
if(a==1) USART_OUT(USART1,&AT45_buffer[0],TxBufferSize1);
while (1)
{
}
}
void USART_OUT(USART_TypeDef* USARTx, uint8_t *Data,uint16_t Len){
uint16_t i;
for(i=0; i<Len; i++){
USART_SendData(USARTx, Data[i]);
while(USART_GetFlagStatus(USARTx, USART_FLAG_TC)==RESET);
}
}
void Delay(__IO uint32_t nCount)
{
for(; nCount != 0; nCount--);
}
void RCC_Configuration(void)
{
/* Setup the microcontroller system. Initialize the Embedded Flash Interface,
initialize the PLL and update the SystemFrequency variable. */
SystemInit();
/* Enable USART1, GPIOA, GPIOx and AFIO clocks */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOx
| RCC_APB2Periph_AFIO, ENABLE);
/* Enable USART2 clock */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
}
/**
* @brief Configures the different GPIO ports.
* @param None
* @retval : None
*/
void GPIO_Configuration(void)
{
RCC_APB2PeriphClockCmd( RCC_APB2Periph_USART1 |RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |
RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD |
RCC_APB2Periph_GPIOE, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; //LED1
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6|GPIO_Pin_3; //LED2, LED3
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; //LCD 背光控制
GPIO_Init(GPIOE, &GPIO_InitStructure);
GPIO_ResetBits(GPIOE, GPIO_Pin_0);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; //USART1 TX
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出
GPIO_Init(GPIOA, &GPIO_InitStructure); //A端口
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; //USART1 RX
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //复用开漏输入
GPIO_Init(GPIOA, &GPIO_InitStructure); //A端口
//GPIO_PinRemapConfig(AFIO_MAPR_USART1_REMAP, ENABLE);
}
/**
* @brief Configures the nested vectored interrupt controller.
* @param None
* @retval : None
*/
void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
/* Configure the NVIC Preemption Priority Bits */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
/* Enable the USART1 Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
/**
* @brief Compares two buffers.
* @param pBuffer1, pBuffer2: buffers to be compared.
* @param BufferLength: buffer's length
* @retval : PASSED: pBuffer1 identical to pBuffer2
* FAILED: pBuffer1 differs from pBuffer2
*/
TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength)
{
while(BufferLength--)
{
if(*pBuffer1 != *pBuffer2)
{
return FAILED;
}
pBuffer1++;
pBuffer2++;
}
return PASSED;
}
……………………
…………限于本文篇幅余下代码请从51黑下载附件…………

复制代码

帐号		自动登录	找回密码
密码			立即注册