源码如下
1 #include "chip.h" 2 #include "board.h" 3 4 #define UARTNum 3 //使用串口3 5 #define LPC_UART LPC_USART3 6 #define UARTx_IRQn USART3_IRQn 7 #define UARTx_IRQHandler UART3_IRQHandler 8 #define _GPDMA_CONN_UART_Tx GPDMA_CONN_UART3_Tx 9 #define _GPDMA_CONN_UART_Rx GPDMA_CONN_UART3_Rx 10 11 static uint8_t uartComplete[] = "Hello World！ "; 12 static uint8_t uart_interrupt_menu[] = 13 "UART Interrupt mode demo ! Press someting to display "; 14 15 /* Print Welcome Screen Menu subroutine by Interrupt mode */ 16 void Print_Menu_Interrupt(LPC_USART_T *UARTx) 17 { 18 uint32_t tmp, tmp2; 19 uint8_t *pDat; 20 21 tmp = sizeof(uart_interrupt_menu); 22 tmp2 = 0; 23 pDat = (uint8_t *) &uart_interrupt_menu[0]; 24 while (tmp) { 25 tmp2 = Chip_UART_Interrupt_Transmit(UARTx, pDat, tmp); 26 pDat += tmp2; 27 tmp -= tmp2; 28 } 29 } 30 31 32 void App_Interrupt_Test(void) 33 { 34 uint8_t isExit = 0, userInput; 35 uint32_t len; 36 37 38 /* Print out uart interrupt menu */ 39 //Print_Menu_Interrupt(LPC_UART); 40 41 while (!isExit) { 42 len = 0; 43 while (len == 0) { 44 len = Chip_UART_Interrupt_Receive(LPC_UART, &userInput, 1); 45 } 46 47 Chip_UART_Interrupt_Transmit(LPC_UART, (uint8_t *) &userInput, sizeof(userInput)); 48 49 50 if (( userInput == 'x') || ( userInput == 'X') ) { 51 isExit = 1; 52 } 53 } 54 //App_Interrupt_DeInit(); 55 } 56 57 58 /***************************************************************************** 59 *中断服务程序 60 ****************************************************************************// 61 62 void UARTx_IRQHandler(void) 63 { 64 Chip_UART_Interrupt_Handler(LPC_UART); 65 } 66 67 /** 68 * @brief Main UART program body 69 * @return Always returns -1 70 */ 71 int main(void) 72 { 73 74 //局部变量和一些数据结构的定义 75 76 uint8_t buffer[10]; 77 UART_FIFO_CFG_T UARTFIFOConfigStruct;//FIFO½á¹¹ÌåÉùÃ÷ 78 79 //--------时钟初始化----------------------- 80 Board_Init();// 81 Board_UART_Init(LPC_UART); 82 83 //设置波特率 84 Chip_UART_Init(LPC_UART); 85 Chip_UART_SetBaud(LPC_UART, 115200); 86 Chip_UART_ConfigData(LPC_UART, UART_DATABIT_8, UART_PARITY_NONE, UART_STOPBIT_1); /* Default 8-N-1 */ 87 88 /* Enable UART Rx interrupt */ 89 Chip_UART_IntConfig(LPC_UART, UART_INTCFG_RBR, ENABLE); 90 /* Enable UART line status interrupt */ 91 Chip_UART_IntConfig(LPC_UART, UART_INTCFG_RLS, ENABLE); 92 /* Enable UART Transmit */ 93 Chip_UART_TxCmd(LPC_UART, ENABLE); 94 95 //Fifo 初始化 96 Chip_UART_FIFOConfigStructInit(LPC_UART, &UARTFIFOConfigStruct); 97 Chip_UART_FIFOConfig(LPC_UART, &UARTFIFOConfigStruct); 98 /* 99 /抢占式优先级和响应优先级 http://www.arm32.com/post/304.html 100 http://blog.csdn.net/blue0432/article/details/7892960 101 102 preemption = 1, sub-priority = 1 */ 103 NVIC_SetPriority(UARTx_IRQn, 1); 104 /* Enable Interrupt for UART0 channel */ 105 NVIC_EnableIRQ(UARTx_IRQn); 106 Chip_UART_InitRingBuffer;// ringbuffer ！！！！！ 107 108 // 来输出个 字符串 呗Hello world 109 Chip_UART_Send(LPC_UART, uartComplete, sizeof(uartComplete), BLOCKING); 110 111 112 Print_Menu_Interrupt(LPC_UART); 113 114 App_Interrupt_Test(); 115 116 return -1; 117 }