Initial commit of library code, moved from leaftest repo

git-svn-id: https://leaflabs.googlecode.com/svn/trunk/library@69 749a229e-a60e-11de-b98f-4500b42dc123

1 files changed, 271 insertions, 0 deletions

diff --git a/src/stm32lib/examples/I2C/Interrupt/main.c b/src/stm32lib/examples/I2C/Interrupt/main.c
new file mode 100755
index 0000000..2b8f2d7
--- /dev/null
+++ b/src/stm32lib/examples/I2C/Interrupt/main.c
@@ -0,0 +1,271 @@
+/******************** (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 "stm32f10x_lib.h"

+

+/* Private typedef -----------------------------------------------------------*/

+typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;

+

+/* Private define ------------------------------------------------------------*/

+#define I2C1_SLAVE_ADDRESS7   0x30

+#define I2C2_SLAVE_ADDRESS7   0x30

+#define BufferSize            4

+#define ClockSpeed            200000

+

+/* Private macro -------------------------------------------------------------*/

+/* Private variables ---------------------------------------------------------*/

+I2C_InitTypeDef  I2C_InitStructure;

+u8 I2C1_Buffer_Tx[BufferSize] = {1,2,3,4};

+u8 I2C2_Buffer_Rx[BufferSize];

+vu8 Tx_Idx = 0, Rx_Idx = 0, PEC_Value = 0;

+volatile TestStatus TransferStatus = FAILED;

+ErrorStatus HSEStartUpStatus;

+    

+/* Private functions ---------------------------------------------------------*/

+void RCC_Configuration(void);

+void GPIO_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();

+

+  /* GPIO configuration ------------------------------------------------------*/

+  GPIO_Configuration();

+

+  /* Enable I2C1 and I2C2 ----------------------------------------------------*/

+  I2C_Cmd(I2C1, ENABLE);

+  I2C_Cmd(I2C2, ENABLE);

+

+  /* Enable I2C1 and I2C2 event and buffer interrupt */

+  I2C_ITConfig(I2C1, I2C_IT_EVT | I2C_IT_BUF, ENABLE);

+  I2C_ITConfig(I2C2, I2C_IT_EVT | I2C_IT_BUF, ENABLE);

+

+  /* I2C1 configuration ------------------------------------------------------*/

+  I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;

+  I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;

+  I2C_InitStructure.I2C_OwnAddress1 = I2C1_SLAVE_ADDRESS7;

+  I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;

+  I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;

+  I2C_InitStructure.I2C_ClockSpeed = ClockSpeed;

+  I2C_Init(I2C1, &I2C_InitStructure);

+  /* I2C2 configuration ------------------------------------------------------*/

+  I2C_InitStructure.I2C_OwnAddress1 = I2C2_SLAVE_ADDRESS7;

+  I2C_Init(I2C2, &I2C_InitStructure);

+   

+  /*----- Transmission Phase -----*/

+  /* Send I2C1 START condition */

+  I2C_GenerateSTART(I2C1, ENABLE);

+

+  /* Send data */

+  while(Rx_Idx < (BufferSize+1))

+  {

+  }

+

+  /* Check the corectness of written data */

+  TransferStatus = Buffercmp(I2C1_Buffer_Tx, I2C2_Buffer_Rx, BufferSize);

+  /* TransferStatus = PASSED, if the transmitted and received data

+     are equal */

+  /* TransferStatus = FAILED, if the transmitted and received data 

+     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 --------------------------------------------------*/

+  /* Enable I2C1 and I2C2 clock */

+  RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1 | RCC_APB1Periph_I2C2, ENABLE);

+  /* Enable GPIOB clock */

+  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, 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 I2C1 pins: SCL and SDA ----------------------------------------*/

+  GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_6 | GPIO_Pin_7;

+  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;

+  GPIO_Init(GPIOB, &GPIO_InitStructure);

+

+  /* Configure I2C2 pins: SCL and SDA ----------------------------------------*/

+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_11;

+  GPIO_Init(GPIOB, &GPIO_InitStructure);

+}

+

+/*******************************************************************************

+* Function Name  : NVIC_Configuration

+* Description    : Configures NVIC and Vector Table base location.

+* Input          : None

+* Output         : None

+* Return         : None

+*******************************************************************************/

+void NVIC_Configuration(void)

+{

+  NVIC_InitTypeDef NVIC_InitStructure;

+  

+#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

+

+  /* 1 bit for pre-emption priority, 3 bits for subpriority */

+  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);

+   

+  /* Configure and enable I2C1 interrupt -------------------------------------*/

+  NVIC_InitStructure.NVIC_IRQChannel = I2C1_EV_IRQChannel;

+  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;

+  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;

+  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

+  NVIC_Init(&NVIC_InitStructure);

+

+  /* Configure and enable I2C2 interrupt -------------------------------------*/  

+  NVIC_InitStructure.NVIC_IRQChannel = I2C2_EV_IRQChannel;

+  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;

+  NVIC_Init(&NVIC_InitStructure);

+}

+

+/*******************************************************************************

+* 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****/