diff options
Diffstat (limited to 'src/stm32lib/examples/USART/HyperTerminal_HwFlowControl/main.c')
| -rwxr-xr-x | src/stm32lib/examples/USART/HyperTerminal_HwFlowControl/main.c | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/src/stm32lib/examples/USART/HyperTerminal_HwFlowControl/main.c b/src/stm32lib/examples/USART/HyperTerminal_HwFlowControl/main.c new file mode 100755 index 0000000..a6939ac --- /dev/null +++ b/src/stm32lib/examples/USART/HyperTerminal_HwFlowControl/main.c @@ -0,0 +1,243 @@ +/******************** (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 -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+#define TxBufferSize (countof(TxBuffer) - 1)
+#define RxBufferSize 0xFF
+
+/* Private macro -------------------------------------------------------------*/
+#define countof(a) (sizeof(a) / sizeof(*(a)))
+
+/* Private variables ---------------------------------------------------------*/
+USART_InitTypeDef USART_InitStructure;
+u8 TxBuffer[] = "\n\rUSART Hyperterminal Hardware Flow Control Example: USART - \
+Hyperterminal communication using hardware flow control\n\r";
+u8 RxBuffer[RxBufferSize];
+u8 NbrOfDataToTransfer = TxBufferSize;
+u8 TxCounter = 0;
+u8 RxCounter = 0;
+ErrorStatus HSEStartUpStatus;
+
+/* Private function prototypes -----------------------------------------------*/
+void RCC_Configuration(void);
+void GPIO_Configuration(void);
+void NVIC_Configuration(void);
+
+/* 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();
+
+
+/* USART2 configuration ------------------------------------------------------*/
+ /* USART2 configured as follow:
+ - BaudRate = 115200 baud
+ - Word Length = 8 Bits
+ - One Stop Bit
+ - No parity
+ - Hardware flow control enabled (RTS and CTS signals)
+ - Receive and transmit enabled
+ */
+ USART_InitStructure.USART_BaudRate = 115200;
+ 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_RTS_CTS;
+ USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
+
+ USART_Init(USART2, &USART_InitStructure);
+ /* Enable the USART2 */
+ USART_Cmd(USART2, ENABLE);
+
+/* Communication hyperterminal-USART2 using hardware flow control -------------*/
+ /* Send a buffer from USART to hyperterminal */
+ while(NbrOfDataToTransfer--)
+ {
+ USART_SendData(USART2, TxBuffer[TxCounter++]);
+ while(USART_GetFlagStatus(USART2, USART_FLAG_TXE) == RESET);
+ }
+
+ /* Receive a string (Max RxBufferSize bytes) from the Hyperterminal ended by '\r' (Enter key) */
+ do
+ {
+ if((USART_GetFlagStatus(USART2, USART_FLAG_RXNE) != RESET)&&(RxCounter < RxBufferSize))
+ {
+ RxBuffer[RxCounter] = USART_ReceiveData(USART2);
+ USART_SendData(USART2, RxBuffer[RxCounter++]);
+ }
+
+ }while((RxBuffer[RxCounter - 1] != '\r')&&(RxCounter != RxBufferSize));
+
+ 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 GPIOx and AFIO clocks */
+ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOx | RCC_APB2Periph_AFIO, ENABLE);
+
+ /* Enable USART2 clocks */
+ 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 USART2 RTS and USART2 Tx as alternate function push-pull */
+ GPIO_InitStructure.GPIO_Pin = GPIO_RTSPin | GPIO_TxPin;
+ GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
+ GPIO_Init(GPIOx, &GPIO_InitStructure);
+
+ /* Configure USART2 CTS and USART2 Rx as input floating */
+ GPIO_InitStructure.GPIO_Pin = GPIO_CTSPin | GPIO_RxPin;
+ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
+ 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
+}
+
+#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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