diff options
Diffstat (limited to 'src/stm32lib/examples/I2C/M24C08_EEPROM/main.c')
| -rwxr-xr-x | src/stm32lib/examples/I2C/M24C08_EEPROM/main.c | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/src/stm32lib/examples/I2C/M24C08_EEPROM/main.c b/src/stm32lib/examples/I2C/M24C08_EEPROM/main.c new file mode 100755 index 0000000..89be1ce --- /dev/null +++ b/src/stm32lib/examples/I2C/M24C08_EEPROM/main.c @@ -0,0 +1,230 @@ +/******************** (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 "i2c_ee.h"
+
+/* Private typedef -----------------------------------------------------------*/
+typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;
+
+/* Private define ------------------------------------------------------------*/
+#define EEPROM_WriteAddress1 0x05
+#define EEPROM_ReadAddress1 0x05
+#define BufferSize1 (countof(Tx1_Buffer)-1)
+#define BufferSize2 (countof(Tx2_Buffer)-1)
+#define EEPROM_WriteAddress2 (EEPROM_WriteAddress1 + BufferSize1)
+#define EEPROM_ReadAddress2 (EEPROM_ReadAddress1 + BufferSize1)
+
+/* Private macro -------------------------------------------------------------*/
+#define countof(a) (sizeof(a) / sizeof(*(a)))
+
+/* Private variables ---------------------------------------------------------*/
+u8 Tx1_Buffer[] = "/* STM32F10x I2C Firmware ";
+u8 Tx2_Buffer[] = "Library Example */";
+u8 Rx1_Buffer[BufferSize1], Rx2_Buffer[BufferSize2];
+volatile TestStatus TransferStatus1 = FAILED, TransferStatus2 = FAILED;
+ErrorStatus HSEStartUpStatus;
+
+/* Private functions ---------------------------------------------------------*/
+void RCC_Configuration(void);
+void NVIC_Configuration(void);
+TestStatus Buffercmp(u8* pBuffer1, u8* pBuffer2, u16 BufferLength);
+
+/*******************************************************************************
+* 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();
+
+ /* Initialize the I2C EEPROM driver ----------------------------------------*/
+ I2C_EE_Init();
+
+ /* First write in the memory followed by a read of the written data --------*/
+ /* Write on I2C EEPROM from EEPROM_WriteAddress1 */
+ I2C_EE_BufferWrite(Tx1_Buffer, EEPROM_WriteAddress1, BufferSize1);
+
+ /* Read from I2C EEPROM from EEPROM_ReadAddress1 */
+ I2C_EE_BufferRead(Rx1_Buffer, EEPROM_ReadAddress1, BufferSize1);
+
+ /* Check if the data written to the memory is read correctly */
+ TransferStatus1 = Buffercmp(Tx1_Buffer, Rx1_Buffer, BufferSize1);
+ /* TransferStatus1 = PASSED, if the transmitted and received data
+ to/from the EEPROM are the same */
+ /* TransferStatus1 = FAILED, if the transmitted and received data
+ to/from the EEPROM are different */
+
+ /* Wait for EEPROM standby state */
+ I2C_EE_WaitEepromStandbyState();
+
+ /* Second write in the memory followed by a read of the written data -------*/
+ /* Write on I2C EEPROM from EEPROM_WriteAddress2 */
+ I2C_EE_BufferWrite(Tx2_Buffer, EEPROM_WriteAddress2, BufferSize2);
+
+ /* Read from I2C EEPROM from EEPROM_ReadAddress2 */
+ I2C_EE_BufferRead(Rx2_Buffer, EEPROM_ReadAddress2, BufferSize2);
+
+ /* Check if the data written to the memory is read correctly */
+ TransferStatus2 = Buffercmp(Tx2_Buffer, Rx2_Buffer, BufferSize2);
+ /* TransferStatus2 = PASSED, if the transmitted and received data
+ to/from the EEPROM are the same */
+ /* TransferStatus2 = FAILED, if the transmitted and received data
+ to/from the EEPROM are different */
+
+ 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 peripheral clocks --------------------------------------------------*/
+ /* GPIOB Periph clock enable */
+ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
+ /* I2C1 Periph clock enable */
+ RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);
+}
+
+/*******************************************************************************
+* 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****/
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