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STM32驱动 M25P64 FLASH读写程序

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ID:225648 发表于 2017-8-8 09:58 | 只看该作者 |只看大图 回帖奖励 |倒序浏览 |阅读模式
STM32单片机驱动M25P64 SPI_FLASH参考例程.

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STM32 M25P64 FLASH读写程序.rar (14.41 KB, 下载次数: 57)

  1. /******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
  2. * File Name          : main.c
  3. * Author             : MCD Application Team
  4. * Version            : V2.0.1
  5. * Date               : 06/13/2008
  6. * Description        : Main program body
  7. ********************************************************************************
  8. * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  9. * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
  10. * AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
  11. * INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
  12. * CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
  13. * INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  14. *******************************************************************************/

  16. /* Includes ------------------------------------------------------------------*/
  17. #include "platform_config.h"
  18. #include "spi_flash.h"

  20. /* Local includes ------------------------------------------------------------*/
  21. /* Private typedef -----------------------------------------------------------*/
  22. typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;

  24. /* Private define ------------------------------------------------------------*/
  25. #define  FLASH_WriteAddress     0x700000
  26. #define  FLASH_ReadAddress      FLASH_WriteAddress
  27. #define  FLASH_SectorToErase    FLASH_WriteAddress
  28. #define  M25P64_FLASH_ID        0x202017
  29. #define  BufferSize (countof(Tx_Buffer)-1)

  31. /* Private macro -------------------------------------------------------------*/
  32. #define countof(a) (sizeof(a) / sizeof(*(a)))

  34. /* Private variables ---------------------------------------------------------*/
  35. u8 Tx_Buffer[] = "STM32F10x SPI Firmware Library Example: communication with an M25P64 SPI FLASH";
  36. u8 Index, Rx_Buffer[BufferSize];
  37. volatile TestStatus TransferStatus1 = FAILED, TransferStatus2 = PASSED;
  38. vu32 FLASH_ID = 0;
  39. ErrorStatus HSEStartUpStatus;

  41. /* Private functions ---------------------------------------------------------*/
  42. TestStatus Buffercmp(u8* pBuffer1, u8* pBuffer2, u16 BufferLength);
  43. void RCC_Configuration(void);
  44. void GPIO_Configuration(void);
  45. void NVIC_Configuration(void);


  48. /*******************************************************************************
  49. * Function Name  : main
  50. * Description    : Main program
  51. * Input          : None
  52. * Output         : None
  53. * Return         : None
  54. *******************************************************************************/
  55. int main(void)
  56. {
  57. #ifdef DEBUG
  58.   debug();
  59. #endif

  61.   /* System clocks configuration */
  62.   RCC_Configuration();

  64.   /* NVIC configuration */
  65.   NVIC_Configuration();

  67.   /* GPIO configuration */
  68.   GPIO_Configuration();

  70.   /* Initialize the SPI FLASH driver */
  71.   SPI_FLASH_Init();

  73.   /* Get SPI Flash ID */
  74.   FLASH_ID = SPI_FLASH_ReadID();
  75.   /* Check the SPI Flash ID */
  76.   if (FLASH_ID == M25P64_FLASH_ID)
  77.   {
  78.     /* OK: Set GPIO_LED pin 6 */
  79.     GPIO_WriteBit(GPIO_LED, GPIO_Pin_6, Bit_SET);
  80.   }
  81.   else
  82.   {
  83.     /* Error: Set GPIO_LED pin 7 */
  84.     GPIO_WriteBit(GPIO_LED, GPIO_Pin_7, Bit_SET);
  85.   }

  87.   /* Perform a write in the Flash followed by a read of the written data */
  88.   /* Erase SPI FLASH Sector to write on */
  89.   SPI_FLASH_SectorErase(FLASH_SectorToErase);

  91.   /* Write Tx_Buffer data to SPI FLASH memory */
  92.   SPI_FLASH_BufferWrite(Tx_Buffer, FLASH_WriteAddress, BufferSize);

  94.   /* Read data from SPI FLASH memory */
  95.   SPI_FLASH_BufferRead(Rx_Buffer, FLASH_ReadAddress, BufferSize);

  97.   /* Check the corectness of written dada */
  98.   TransferStatus1 = Buffercmp(Tx_Buffer, Rx_Buffer, BufferSize);
  99.   /* TransferStatus1 = PASSED, if the transmitted and received data by SPI1
  100.      are the same */
  101.   /* TransferStatus1 = FAILED, if the transmitted and received data by SPI1
  102.      are different */

  104.   /* Perform an erase in the Flash followed by a read of the written data */
  105.   /* Erase SPI FLASH Sector to write on */
  106.   SPI_FLASH_SectorErase(FLASH_SectorToErase);

  108.   /* Read data from SPI FLASH memory */
  109.   SPI_FLASH_BufferRead(Rx_Buffer, FLASH_ReadAddress, BufferSize);

  111.   /* Check the corectness of erasing operation dada */
  112.   for (Index = 0; Index < BufferSize; Index++)
  113.   {
  114.     if (Rx_Buffer[Index] != 0xFF)
  115.     {
  116.       TransferStatus2 = FAILED;
  117.     }
  118.   }
  119.   /* TransferStatus2 = PASSED, if the specified sector part is erased */
  120.   /* TransferStatus2 = FAILED, if the specified sector part is not well erased  */

  122.   while (1)
  123.   {}
  124. }

  126. /*******************************************************************************
  127. * Function Name  : RCC_Configuration
  128. * Description    : Configures the different system clocks.
  129. * Input          : None
  130. * Output         : None
  131. * Return         : None
  132. *******************************************************************************/
  133. void RCC_Configuration(void)
  134. {
  135.   /* RCC system reset(for debug purpose) */
  136.   RCC_DeInit();

  138.   /* Enable HSE */
  139.   RCC_HSEConfig(RCC_HSE_ON);

  141.   /* Wait till HSE is ready */
  142.   HSEStartUpStatus = RCC_WaitForHSEStartUp();

  144.   if (HSEStartUpStatus == SUCCESS)
  145.   {
  146.     /* Enable Prefetch Buffer */
  147.     FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);

  149.     /* Flash 2 wait state */
  150.     FLASH_SetLatency(FLASH_Latency_2);

  152.     /* HCLK = SYSCLK */
  153.     RCC_HCLKConfig(RCC_SYSCLK_Div1);

  155.     /* PCLK2 = HCLK */
  156.     RCC_PCLK2Config(RCC_HCLK_Div1);

  158.     /* PCLK1 = HCLK/2 */
  159.     RCC_PCLK1Config(RCC_HCLK_Div2);

  161.     /* PLLCLK = 8MHz * 9 = 72 MHz */
  162.     RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);

  164.     /* Enable PLL */
  165.     RCC_PLLCmd(ENABLE);

  167.     /* Wait till PLL is ready */
  168.     while (RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
  169.     {}

  171.     /* Select PLL as system clock source */
  172.     RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);

  174.     /* Wait till PLL is used as system clock source */
  175.     while (RCC_GetSYSCLKSource() != 0x08)
  176.     {}
  177.   }

  179.   /* Enable GPIO_LED clock */
  180.   RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIO_LED, ENABLE);
  181. }

  183. /*******************************************************************************
  184. * Function Name  : GPIO_Configuration
  185. * Description    : Configures the different GPIO ports.
  186. * Input          : None
  187. * Output         : None
  188. * Return         : None
  189. *******************************************************************************/
  190. void GPIO_Configuration(void)
  191. {
  192.   GPIO_InitTypeDef GPIO_InitStructure;

  194.   /* Configure GPIO LED pin6 and pin7 as Output push-pull --------------------*/
  195.   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
  196.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  197.   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  198.   GPIO_Init(GPIO_LED, &GPIO_InitStructure);
  199. }

  201. /*******************************************************************************
  202. * Function Name  : NVIC_Configuration
  203. * Description    : Configures Vector Table base location.
  204. * Input          : None
  205. * Output         : None
  206. * Return         : None
  207. *******************************************************************************/
  208. void NVIC_Configuration(void)
  209. {
  210. #ifdef  VECT_TAB_RAM
  211.   /* Set the Vector Table base location at 0x20000000 */
  212.   NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
  213. #else  /* VECT_TAB_FLASH  */
  214.   /* Set the Vector Table base location at 0x08000000 */
  215.   NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
  216. #endif
  217. }

  219. /*******************************************************************************
  220. * Function Name  : Buffercmp
  221. * Description    : Compares two buffers.
  222. * Input          : - pBuffer1, pBuffer2: buffers to be compared.
  223. *                : - BufferLength: buffer's length
  224. * Output         : None
  225. * Return         : PASSED: pBuffer1 identical to pBuffer2
  226. *                  FAILED: pBuffer1 differs from pBuffer2
  227. *******************************************************************************/
  228. TestStatus Buffercmp(u8* pBuffer1, u8* pBuffer2, u16 BufferLength)
  229. {
  230.   while (BufferLength--)
  231.   {
  232.     if (*pBuffer1 != *pBuffer2)
  233.     {
  234.       return FAILED;
  235.     }

  237.     pBuffer1++;
  238.     pBuffer2++;
  239.   }

  241.   return PASSED;
  242. }

  244. #ifdef  DEBUG
  245. /*******************************************************************************
  246. * Function Name  : assert_failed
  247. * Description    : Reports the name of the source file and the source line number
  248. *                  where the assert_param error has occurred.
  249. * Input          : - file: pointer to the source file name
  250. *                  - line: assert_param error line source number
  251. * Output         : None
  252. * Return         : None
  253. *******************************************************************************/
  254. void assert_failed(u8* file, u32 line)
  255. {
  256.   /* User can add his own implementation to report the file name and line number,
  257.      ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

  259.   /* Infinite loop */
  260.   while (1)
  261.   {}
  262. }
  263. #endif
  264. /******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
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沙发
ID:420863 发表于 2018-11-5 10:41 | 只看该作者
下载下来分析下
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板凳
ID:463940 发表于 2019-3-7 22:05 | 只看该作者
试试。。。。
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