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+/**
+ ******************************************************************************
+ * @file USART/Polling/main.c
+ * @author MCD Application Team
+ * @version V3.5.0
+ * @date 08-April-2011
+ * @brief Main program body
+ ******************************************************************************
+ * @attention
+ *
+ * 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.
+ *
+ * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f10x.h"
+#include "platform_config.h"
+
+/** @addtogroup STM32F10x_StdPeriph_Examples
+ * @{
+ */
+
+/** @addtogroup USART_Polling
+ * @{
+ */
+
+/* Private typedef -----------------------------------------------------------*/
+typedef enum { FAILED = 0, PASSED = !FAILED} TestStatus;
+
+/* Private define ------------------------------------------------------------*/
+#define TxBufferSize (countof(TxBuffer))
+
+/* Private macro -------------------------------------------------------------*/
+#define countof(a) (sizeof(a) / sizeof(*(a)))
+
+/* Private variables ---------------------------------------------------------*/
+USART_InitTypeDef USART_InitStructure;
+uint8_t TxBuffer[] = "Buffer Send from USARTy to USARTz using Flags";
+uint8_t RxBuffer[TxBufferSize];
+__IO uint8_t TxCounter = 0, RxCounter = 0;
+volatile TestStatus TransferStatus = FAILED;
+
+/* Private function prototypes -----------------------------------------------*/
+void RCC_Configuration(void);
+void GPIO_Configuration(void);
+TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength);
+__IO uint8_t index = 0;
+
+/* Private functions ---------------------------------------------------------*/
+
+/**
+ * @brief Main program
+ * @param None
+ * @retval None
+ */
+int main(void)
+{
+ /*!< At this stage the microcontroller clock setting is already configured,
+ this is done through SystemInit() function which is called from startup
+ file (startup_stm32f10x_xx.s) before to branch to application main.
+ To reconfigure the default setting of SystemInit() function, refer to
+ system_stm32f10x.c file
+ */
+
+ /* System Clocks Configuration */
+ RCC_Configuration();
+
+ /* Configure the GPIO ports */
+ GPIO_Configuration();
+
+/* USARTy and USARTz configuration ------------------------------------------------------*/
+ /* USARTy and USARTz configured as follow:
+ - BaudRate = 230400 baud
+ - Word Length = 8 Bits
+ - One Stop Bit
+ - Even 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_Even;
+ USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
+ USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
+
+ /* Configure USARTy */
+ USART_Init(USARTy, &USART_InitStructure);
+ /* Configure USARTz */
+ USART_Init(USARTz, &USART_InitStructure);
+
+ /* Enable the USARTy */
+ USART_Cmd(USARTy, ENABLE);
+
+ /* Enable the USARTz */
+ USART_Cmd(USARTz, ENABLE);
+
+ while(TxCounter < TxBufferSize)
+ {
+ /* Send one byte from USARTy to USARTz */
+ USART_SendData(USARTy, TxBuffer[TxCounter++]);
+
+ /* Loop until USARTy DR register is empty */
+ while(USART_GetFlagStatus(USARTy, USART_FLAG_TXE) == RESET)
+ {
+ }
+
+ /* Loop until the USARTz Receive Data Register is not empty */
+ while(USART_GetFlagStatus(USARTz, USART_FLAG_RXNE) == RESET)
+ {
+ }
+
+ /* Store the received byte in RxBuffer */
+ RxBuffer[RxCounter++] = (USART_ReceiveData(USARTz) & 0x7F);
+
+ }
+ /* Check the received data with the send ones */
+ TransferStatus = Buffercmp(TxBuffer, RxBuffer, TxBufferSize);
+ /* TransferStatus = PASSED, if the data transmitted from USARTy and
+ received by USARTz are the same */
+ /* TransferStatus = FAILED, if the data transmitted from USARTy and
+ received by USARTz are different */
+
+ while (1)
+ {
+ }
+}
+
+/**
+ * @brief Configures the different system clocks.
+ * @param None
+ * @retval None
+ */
+void RCC_Configuration(void)
+{
+ /* Enable GPIO clock */
+ RCC_APB2PeriphClockCmd(USARTy_GPIO_CLK | USARTz_GPIO_CLK | RCC_APB2Periph_AFIO, ENABLE);
+
+#ifndef USE_STM3210C_EVAL
+ /* Enable USARTy Clock */
+ RCC_APB2PeriphClockCmd(USARTy_CLK, ENABLE);
+#else
+ /* Enable USARTy Clock */
+ RCC_APB1PeriphClockCmd(USARTy_CLK, ENABLE);
+#endif
+ /* Enable USARTz Clock */
+ RCC_APB1PeriphClockCmd(USARTz_CLK, ENABLE);
+}
+
+/**
+ * @brief Configures the different GPIO ports.
+ * @param None
+ * @retval None
+ */
+void GPIO_Configuration(void)
+{
+ GPIO_InitTypeDef GPIO_InitStructure;
+
+#ifdef USE_STM3210C_EVAL
+ /* Enable the USART3 Pins Software Remapping */
+ GPIO_PinRemapConfig(GPIO_PartialRemap_USART3, ENABLE);
+
+ /* Enable the USART2 Pins Software Remapping */
+ GPIO_PinRemapConfig(GPIO_Remap_USART2, ENABLE);
+#elif defined(USE_STM3210B_EVAL) || defined(USE_STM32100B_EVAL)
+ /* Enable the USART2 Pins Software Remapping */
+ GPIO_PinRemapConfig(GPIO_Remap_USART2, ENABLE);
+#endif
+
+ /* Configure USARTy Rx as input floating */
+ GPIO_InitStructure.GPIO_Pin = USARTy_RxPin;
+ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
+ GPIO_Init(USARTy_GPIO, &GPIO_InitStructure);
+
+ /* Configure USARTz Rx as input floating */
+ GPIO_InitStructure.GPIO_Pin = USARTz_RxPin;
+ GPIO_Init(USARTz_GPIO, &GPIO_InitStructure);
+
+ /* Configure USARTy Tx as alternate function push-pull */
+ GPIO_InitStructure.GPIO_Pin = USARTy_TxPin;
+ GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
+ GPIO_Init(USARTy_GPIO, &GPIO_InitStructure);
+
+ /* Configure USARTz Tx as alternate function push-pull */
+ GPIO_InitStructure.GPIO_Pin = USARTz_TxPin;
+ GPIO_Init(USARTz_GPIO, &GPIO_InitStructure);
+}
+
+/**
+ * @brief Compares two buffers.
+ * @param pBuffer1, pBuffer2: buffers to be compared.
+ * @param BufferLength: buffer's length
+ * @retval PASSED: pBuffer1 identical to pBuffer2
+ * FAILED: pBuffer1 differs from pBuffer2
+ */
+TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength)
+{
+ while(BufferLength--)
+ {
+ if(*pBuffer1 != *pBuffer2)
+ {
+ return FAILED;
+ }
+
+ pBuffer1++;
+ pBuffer2++;
+ }
+
+ return PASSED;
+}
+
+#ifdef USE_FULL_ASSERT
+
+/**
+ * @brief Reports the name of the source file and the source line number
+ * where the assert_param error has occurred.
+ * @param file: pointer to the source file name
+ * @param line: assert_param error line source number
+ * @retval None
+ */
+void assert_failed(uint8_t* file, uint32_t 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 2011 STMicroelectronics *****END OF FILE****/