diff options
Diffstat (limited to 'src/stm32lib/examples/SPI/M25P64_FLASH/main.c')
| -rwxr-xr-x | src/stm32lib/examples/SPI/M25P64_FLASH/main.c | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/src/stm32lib/examples/SPI/M25P64_FLASH/main.c b/src/stm32lib/examples/SPI/M25P64_FLASH/main.c new file mode 100755 index 0000000..b267d3d --- /dev/null +++ b/src/stm32lib/examples/SPI/M25P64_FLASH/main.c @@ -0,0 +1,264 @@ +/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
+* File Name : main.c
+* Author : MCD Application Team
+* Version : V2.0.1
+* Date : 06/13/2008
+* Description : Main program body
+********************************************************************************
+* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
+* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
+* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
+* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
+* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+*******************************************************************************/
+
+/* Includes ------------------------------------------------------------------*/
+#include "platform_config.h"
+#include "spi_flash.h"
+
+/* Local includes ------------------------------------------------------------*/
+/* Private typedef -----------------------------------------------------------*/
+typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;
+
+/* Private define ------------------------------------------------------------*/
+#define FLASH_WriteAddress 0x700000
+#define FLASH_ReadAddress FLASH_WriteAddress
+#define FLASH_SectorToErase FLASH_WriteAddress
+#define M25P64_FLASH_ID 0x202017
+#define BufferSize (countof(Tx_Buffer)-1)
+
+/* Private macro -------------------------------------------------------------*/
+#define countof(a) (sizeof(a) / sizeof(*(a)))
+
+/* Private variables ---------------------------------------------------------*/
+u8 Tx_Buffer[] = "STM32F10x SPI Firmware Library Example: communication with an M25P64 SPI FLASH";
+u8 Index, Rx_Buffer[BufferSize];
+volatile TestStatus TransferStatus1 = FAILED, TransferStatus2 = PASSED;
+vu32 FLASH_ID = 0;
+ErrorStatus HSEStartUpStatus;
+
+/* Private functions ---------------------------------------------------------*/
+TestStatus Buffercmp(u8* pBuffer1, u8* pBuffer2, u16 BufferLength);
+void RCC_Configuration(void);
+void GPIO_Configuration(void);
+void NVIC_Configuration(void);
+
+
+/*******************************************************************************
+* Function Name : main
+* Description : Main program
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+int main(void)
+{
+#ifdef DEBUG
+ debug();
+#endif
+
+ /* System clocks configuration */
+ RCC_Configuration();
+
+ /* NVIC configuration */
+ NVIC_Configuration();
+
+ /* GPIO configuration */
+ GPIO_Configuration();
+
+ /* Initialize the SPI FLASH driver */
+ SPI_FLASH_Init();
+
+ /* Get SPI Flash ID */
+ FLASH_ID = SPI_FLASH_ReadID();
+ /* Check the SPI Flash ID */
+ if (FLASH_ID == M25P64_FLASH_ID)
+ {
+ /* OK: Set GPIO_LED pin 6 */
+ GPIO_WriteBit(GPIO_LED, GPIO_Pin_6, Bit_SET);
+ }
+ else
+ {
+ /* Error: Set GPIO_LED pin 7 */
+ GPIO_WriteBit(GPIO_LED, GPIO_Pin_7, Bit_SET);
+ }
+
+ /* Perform a write in the Flash followed by a read of the written data */
+ /* Erase SPI FLASH Sector to write on */
+ SPI_FLASH_SectorErase(FLASH_SectorToErase);
+
+ /* Write Tx_Buffer data to SPI FLASH memory */
+ SPI_FLASH_BufferWrite(Tx_Buffer, FLASH_WriteAddress, BufferSize);
+
+ /* Read data from SPI FLASH memory */
+ SPI_FLASH_BufferRead(Rx_Buffer, FLASH_ReadAddress, BufferSize);
+
+ /* Check the corectness of written dada */
+ TransferStatus1 = Buffercmp(Tx_Buffer, Rx_Buffer, BufferSize);
+ /* TransferStatus1 = PASSED, if the transmitted and received data by SPI1
+ are the same */
+ /* TransferStatus1 = FAILED, if the transmitted and received data by SPI1
+ are different */
+
+ /* Perform an erase in the Flash followed by a read of the written data */
+ /* Erase SPI FLASH Sector to write on */
+ SPI_FLASH_SectorErase(FLASH_SectorToErase);
+
+ /* Read data from SPI FLASH memory */
+ SPI_FLASH_BufferRead(Rx_Buffer, FLASH_ReadAddress, BufferSize);
+
+ /* Check the corectness of erasing operation dada */
+ for (Index = 0; Index < BufferSize; Index++)
+ {
+ if (Rx_Buffer[Index] != 0xFF)
+ {
+ TransferStatus2 = FAILED;
+ }
+ }
+ /* TransferStatus2 = PASSED, if the specified sector part is erased */
+ /* TransferStatus2 = FAILED, if the specified sector part is not well erased */
+
+ while (1)
+ {}
+}
+
+/*******************************************************************************
+* Function Name : RCC_Configuration
+* Description : Configures the different system clocks.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+void RCC_Configuration(void)
+{
+ /* RCC system reset(for debug purpose) */
+ RCC_DeInit();
+
+ /* Enable HSE */
+ RCC_HSEConfig(RCC_HSE_ON);
+
+ /* Wait till HSE is ready */
+ HSEStartUpStatus = RCC_WaitForHSEStartUp();
+
+ if (HSEStartUpStatus == SUCCESS)
+ {
+ /* Enable Prefetch Buffer */
+ FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
+
+ /* Flash 2 wait state */
+ FLASH_SetLatency(FLASH_Latency_2);
+
+ /* HCLK = SYSCLK */
+ RCC_HCLKConfig(RCC_SYSCLK_Div1);
+
+ /* PCLK2 = HCLK */
+ RCC_PCLK2Config(RCC_HCLK_Div1);
+
+ /* PCLK1 = HCLK/2 */
+ RCC_PCLK1Config(RCC_HCLK_Div2);
+
+ /* PLLCLK = 8MHz * 9 = 72 MHz */
+ RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
+
+ /* Enable PLL */
+ RCC_PLLCmd(ENABLE);
+
+ /* Wait till PLL is ready */
+ while (RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
+ {}
+
+ /* Select PLL as system clock source */
+ RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
+
+ /* Wait till PLL is used as system clock source */
+ while (RCC_GetSYSCLKSource() != 0x08)
+ {}
+ }
+
+ /* Enable GPIO_LED clock */
+ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIO_LED, ENABLE);
+}
+
+/*******************************************************************************
+* Function Name : GPIO_Configuration
+* Description : Configures the different GPIO ports.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+void GPIO_Configuration(void)
+{
+ GPIO_InitTypeDef GPIO_InitStructure;
+
+ /* Configure GPIO LED pin6 and pin7 as Output push-pull --------------------*/
+ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
+ GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
+ GPIO_Init(GPIO_LED, &GPIO_InitStructure);
+}
+
+/*******************************************************************************
+* Function Name : NVIC_Configuration
+* Description : Configures Vector Table base location.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+void NVIC_Configuration(void)
+{
+#ifdef VECT_TAB_RAM
+ /* Set the Vector Table base location at 0x20000000 */
+ NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
+#else /* VECT_TAB_FLASH */
+ /* Set the Vector Table base location at 0x08000000 */
+ NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
+#endif
+}
+
+/*******************************************************************************
+* Function Name : Buffercmp
+* Description : Compares two buffers.
+* Input : - pBuffer1, pBuffer2: buffers to be compared.
+* : - BufferLength: buffer's length
+* Output : None
+* Return : PASSED: pBuffer1 identical to pBuffer2
+* FAILED: pBuffer1 differs from pBuffer2
+*******************************************************************************/
+TestStatus Buffercmp(u8* pBuffer1, u8* pBuffer2, u16 BufferLength)
+{
+ while (BufferLength--)
+ {
+ if (*pBuffer1 != *pBuffer2)
+ {
+ return FAILED;
+ }
+
+ pBuffer1++;
+ pBuffer2++;
+ }
+
+ return PASSED;
+}
+
+#ifdef DEBUG
+/*******************************************************************************
+* Function Name : assert_failed
+* Description : Reports the name of the source file and the source line number
+* where the assert_param error has occurred.
+* Input : - file: pointer to the source file name
+* - line: assert_param error line source number
+* Output : None
+* Return : None
+*******************************************************************************/
+void assert_failed(u8* file, u32 line)
+{
+ /* User can add his own implementation to report the file name and line number,
+ ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
+
+ /* Infinite loop */
+ while (1)
+ {}
+}
+#endif
+/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
|