UART操作的程序.doc

UART操作的程序佚名 / 2008-09-18T3C25-V5 仅售880元UART操作的程序作者：转载#include config.h/*define UARTs data structure*/typedef struct UartMode uint8 datab; / byte length uint8 stopb; / stop bit,1/2 uint8 parity; / parity bit settingUARTMODE;uint8 rcv_buf8;uint8 rcv_byte8;volatile uint8 add_data_num;volatile uint8 rcv_new; /flag for rcving new datavolatile uint8 add_data;void _irq IRQ_UART0(void) uint8 i; if (U0IIR & 0x0F) = 0x04) rcv_new = 1; for (i = 0; i8; i+) rcv_bufi = U0RBR; / read all the data in FIFO once. Then there is no too much interruptions if (U0IIR & 0xF) = 0x0C) add_data_num = 0; while (U0LSR & 0x00000001)/ Read UARTs LSR register first, / and determine whether FIFO is empty add_data = 1; / or not. rcv_byteadd_data_num = U0RBR; add_data_num+; VICVectAddr = 0x00;void UART0_SendByte(uint8 dat) U0THR = dat;void UART0_SendBuf(void) uint8 i; for (i=0; i8; i+) UART0_SendByte(rcv_bufi); while (U0LSR & 0x20) = 0) ;void UART0_SendAddByte(uint8 j) uint8 i; for (i = 0; i 115200) return (0); if (set.datab 8) return (0); if (set.stopb = 0)|(set.stopb 2) return (0); if (set.parity 4) return (0); /*set UARTs baud rate*/ U0LCR = 0x80; /DLAB = 1 bak = (Fpclk 4)/baud; U0DLM = bak 8; U0DLL = bak &0xFF; /*set UARTs mode*/ bak = set.datab - 5; if (set.stopb = 2) bak |= 0x04; if (set.parity != 0) set.parity = set.parity - 1; bak |= 0x08; bak |= set.parity 4; U0LCR = bak; return (1); int main (void)/ add user source code UARTMODE set; set.datab = 8; set.stopb = 1; set.parity = 0; rcv_new = 0; PINSEL0 = (PINSEL0 & 0xFFFFFFF0) | 0x5; UART0_Init(115200, set); U0FCR = 0x81; U0IER = 0x01; IRQEnable(); /*Enable UART0 Interruption*/ VICIntSelect = 0x00000000; VICVectCntl0 = 0x20|0x06; VICVectAddr0 = (uint32)IRQ_UART0; VICIntEnable = 10x06; /Enable UART0s Interruption while (1) if (rcv_new = 1) rcv_new =