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, 313 insertions, 0 deletions

diff --git a/src/stm32lib/examples/USART/HalfDuplex/main.c b/src/stm32lib/examples/USART/HalfDuplex/main.c
new file mode 100755
index 0000000..d37ce13
--- /dev/null
+++ b/src/stm32lib/examples/USART/HalfDuplex/main.c
@@ -0,0 +1,313 @@
+/******************** (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"

+#include "platform_config.h"

+

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

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

+

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

+#define TxBufferSize1   (countof(TxBuffer1) - 1)

+#define TxBufferSize2   (countof(TxBuffer2) - 1)

+

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

+#define countof(a)   (sizeof(a) / sizeof(*(a)))

+

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

+USART_InitTypeDef USART_InitStructure;

+u8 TxBuffer1[] = "USART Half Duplex: USART1 -> USART2 using HalfDuplex mode";

+u8 TxBuffer2[] = "USART Half Duplex: USART2 -> USART1 using HalfDuplex mode";

+u8 RxBuffer1[TxBufferSize2];

+u8 RxBuffer2[TxBufferSize1];

+u8 NbrOfDataToRead1 = TxBufferSize2;

+u8 NbrOfDataToRead2 = TxBufferSize1;

+u8 TxCounter1 = 0, RxCounter1 = 0;

+u8 TxCounter2 = 0, RxCounter2 = 0;

+volatile TestStatus TransferStatus1 = FAILED, TransferStatus2 = FAILED;  

+ErrorStatus HSEStartUpStatus;

+

+/* Private function prototypes -----------------------------------------------*/

+void RCC_Configuration(void);

+void GPIO_Configuration(void);

+void NVIC_Configuration(void);

+TestStatus Buffercmp(u8* pBuffer1, u8* pBuffer2, u16 BufferLength);

+  

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

+

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

+* 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();

+

+  /* Configure the GPIO ports */

+  GPIO_Configuration();

+

+/* USART1 and USART2 configuration ------------------------------------------------------*/

+  /* USART1 and USART2 configured as follow:

+        - BaudRate = 230400 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 = 230400;

+  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);

+  /* Configure USART2 */

+  USART_Init(USART2, &USART_InitStructure);

+  

+  /* Enable the USART1 */

+  USART_Cmd(USART1, ENABLE);

+  /* Enable the USART2 */

+  USART_Cmd(USART2, ENABLE);

+

+  /* Enable USART1 Half Duplex Mode*/

+  USART_HalfDuplexCmd(USART1, ENABLE);

+  /* Enable USART2 Half Duplex Mode*/

+  USART_HalfDuplexCmd(USART2, ENABLE);

+

+  while(NbrOfDataToRead2--)

+  {

+    /* Wait until end of transmit */

+    while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET)

+    {

+    }

+    /* Write one byte in the USART1 Transmit Data Register */

+    USART_SendData(USART1, TxBuffer1[TxCounter1++]);

+

+    /* Wait the byte is entirtly received by USART2 */  

+    while(USART_GetFlagStatus(USART2, USART_FLAG_RXNE) == RESET)

+    {

+    }

+    /* Store the received byte in the RxBuffer2 */

+    RxBuffer2[RxCounter2++] = USART_ReceiveData(USART2);

+  }

+

+  /* Clear the USART1 Data Register */

+  USART_ReceiveData(USART1);

+

+  while(NbrOfDataToRead1--)

+  { 

+    /* Wait until end of transmit */

+    while(USART_GetFlagStatus(USART2, USART_FLAG_TXE)== RESET)

+    {

+    }

+    /* Write one byte in the USART2 Transmit Data Register */

+    USART_SendData(USART2, TxBuffer2[TxCounter2++]);

+

+    /* Wait the byte is entirtly received by USART1 */

+    while(USART_GetFlagStatus(USART1,USART_FLAG_RXNE) == RESET)

+    {

+    }

+    /* Store the received byte in the RxBuffer1 */

+    RxBuffer1[RxCounter1++] = USART_ReceiveData(USART1);

+  }

+  

+  /* Check the received data with the send ones */

+  TransferStatus1 = Buffercmp(TxBuffer1, RxBuffer2, TxBufferSize1);

+  /* TransferStatus = PASSED, if the data transmitted from USART1 and  

+     received by USART2 are the same */

+  /* TransferStatus = FAILED, if the data transmitted from USART1 and 

+     received by USART2 are different */

+  TransferStatus2 = Buffercmp(TxBuffer2, RxBuffer1, TxBufferSize2);

+  /* TransferStatus = PASSED, if the data transmitted from USART2 and  

+     received by USART1 are the same */

+  /* TransferStatus = FAILED, if the data transmitted from USART2 and 

+     received by USART1 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 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);

+}

+

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

+* Function Name  : GPIO_Configuration

+* Description    : Configures the different GPIO ports.

+* Input          : None

+* Output         : None

+* Return         : None

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

+void GPIO_Configuration(void)

+{

+  GPIO_InitTypeDef GPIO_InitStructure;

+

+#ifdef USE_STM3210B_EVAL

+  /* Enable the USART2 Pins Software Remapping */

+  GPIO_PinRemapConfig(GPIO_Remap_USART2, ENABLE);

+#endif

+

+  /* Configure USART1 Tx (PA.09) as alternate function open-drain */

+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;

+  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;

+  GPIO_Init(GPIOA, &GPIO_InitStructure);

+

+  /* Configure USART2 Tx as alternate function open-drain */

+  GPIO_InitStructure.GPIO_Pin = GPIO_TxPin;

+  GPIO_Init(GPIOx, &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****/