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view libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/USART/Interrupt/main.c @ 8:58d76cf522ff
Split out code into separate files.
author | Daniel O'Connor <darius@dons.net.au> |
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date | Sat, 04 Feb 2012 13:29:31 +1030 |
parents | c59513fd84fb |
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/** ****************************************************************************** * @file USART/Interrupt/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>© COPYRIGHT 2011 STMicroelectronics</center></h2> ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "stm32f10x.h" #include "platform_config.h" /** @addtogroup STM32F10x_StdPeriph_Examples * @{ */ /** @addtogroup USART_Interrupt * @{ */ /* Private typedef -----------------------------------------------------------*/ typedef enum { FAILED = 0, PASSED = !FAILED} TestStatus; /* Private define ------------------------------------------------------------*/ #define TxBufferSize1 (countof(TxBuffer1) - 1) #define TxBufferSize2 (countof(TxBuffer2) - 1) #define RxBufferSize1 TxBufferSize2 #define RxBufferSize2 TxBufferSize1 /* Private macro -------------------------------------------------------------*/ #define countof(a) (sizeof(a) / sizeof(*(a))) /* Private variables ---------------------------------------------------------*/ USART_InitTypeDef USART_InitStructure; uint8_t TxBuffer1[] = "USART Interrupt Example: USARTy -> USARTz using Interrupt"; uint8_t TxBuffer2[] = "USART Interrupt Example: USARTz -> USARTy using Interrupt"; uint8_t RxBuffer1[RxBufferSize1]; uint8_t RxBuffer2[RxBufferSize2]; __IO uint8_t TxCounter1 = 0x00; __IO uint8_t TxCounter2 = 0x00; __IO uint8_t RxCounter1 = 0x00; __IO uint8_t RxCounter2 = 0x00; uint8_t NbrOfDataToTransfer1 = TxBufferSize1; uint8_t NbrOfDataToTransfer2 = TxBufferSize2; uint8_t NbrOfDataToRead1 = RxBufferSize1; uint8_t NbrOfDataToRead2 = RxBufferSize2; __IO TestStatus TransferStatus1 = FAILED; __IO TestStatus TransferStatus2 = FAILED; /* Private function prototypes -----------------------------------------------*/ void RCC_Configuration(void); void GPIO_Configuration(void); void NVIC_Configuration(void); TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength); /* 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(); /* NVIC configuration */ NVIC_Configuration(); /* Configure the GPIO ports */ GPIO_Configuration(); /* USARTy and USARTz configuration ------------------------------------------------------*/ /* USARTy and USARTz configured as follow: - BaudRate = 9600 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 = 9600; 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 USARTy */ USART_Init(USARTy, &USART_InitStructure); /* Configure USARTz */ USART_Init(USARTz, &USART_InitStructure); /* Enable USARTy Receive and Transmit interrupts */ USART_ITConfig(USARTy, USART_IT_RXNE, ENABLE); USART_ITConfig(USARTy, USART_IT_TXE, ENABLE); /* Enable USARTz Receive and Transmit interrupts */ USART_ITConfig(USARTz, USART_IT_RXNE, ENABLE); USART_ITConfig(USARTz, USART_IT_TXE, ENABLE); /* Enable the USARTy */ USART_Cmd(USARTy, ENABLE); /* Enable the USARTz */ USART_Cmd(USARTz, ENABLE); /* Wait until end of transmission from USARTy to USARTz */ while(RxCounter2 < RxBufferSize2) { } /* Wait until end of transmission from USARTz to USARTy */ while(RxCounter1 < RxBufferSize1) { } /* Check the received data with the send ones */ TransferStatus1 = Buffercmp(TxBuffer2, RxBuffer1, RxBufferSize1); /* TransferStatus1 = PASSED, if the data transmitted from USARTz and received by USARTy are the same */ /* TransferStatus1 = FAILED, if the data transmitted from USARTz and received by USARTy are different */ TransferStatus2 = Buffercmp(TxBuffer1, RxBuffer2, RxBufferSize2); /* TransferStatus2 = PASSED, if the data transmitted from USARTy and received by USARTz are the same */ /* TransferStatus2 = 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 Configures the nested vectored interrupt controller. * @param None * @retval None */ void NVIC_Configuration(void) { NVIC_InitTypeDef NVIC_InitStructure; /* Configure the NVIC Preemption Priority Bits */ NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0); /* Enable the USARTy Interrupt */ NVIC_InitStructure.NVIC_IRQChannel = USARTy_IRQn; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); /* Enable the USARTz Interrupt */ NVIC_InitStructure.NVIC_IRQChannel = USARTz_IRQn; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_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****/