?? uartmanage.c
字號:
#include "includes.h"
bit KeyFlag0;
bit KeyFlag1;
/*============================================================
*
* 函 數(shù) 名:UART_Init
*
* 參 數(shù):
*
* 功能描述:UART端口初始化
*
*
* 返 回 值:
*
* 拋出異常:
*
============================================================*/
void UART_Init (void)
{
/* SCON0 = 0x10; // SCON0: 8-bit variable bit rate
// level of STOP bit is ignored
// RX enabled
// clear RI0 and TI0 bits
if (SYSCLK/BAUDRATE/2/256 < 1) {
TH1 = -(SYSCLK/BAUDRATE/2);
CKCON &= ~0x0B; // T1M = 1; SCA1:0 = xx
CKCON |= 0x08;
} else if (SYSCLK/BAUDRATE/2/256 < 4) {
TH1 = -(SYSCLK/BAUDRATE/2/4);
CKCON &= ~0x0B; // T1M = 0; SCA1:0 = 01
CKCON |= 0x09;
} else if (SYSCLK/BAUDRATE/2/256 < 12) {
TH1 = -(SYSCLK/BAUDRATE/2/12);
CKCON &= ~0x0B; // T1M = 0; SCA1:0 = 00
} else {
TH1 = -(SYSCLK/BAUDRATE/2/48);
CKCON &= ~0x0B; // T1M = 0; SCA1:0 = 10
CKCON |= 0x02;
}
TL1 = TH1;
TMOD &= ~0xf0; // TMOD: timer 1 in 8-bit autoreload
TMOD |= 0x20;
TI0 = 0;
RI0 = 0;
TR1 = 1; // START Timer1
TI0 = 1; // Indicate TX0 ready */
SCON0 = 0x10;
CKCON &= ~0x0B; // T1M = 0;定時器 1 使用由分頻位(SCA1-SAC0)定義的時鐘 //SCA1:0 = 10 系統(tǒng)時鐘/48
CKCON |= 0x02;
TMOD |= 0x20;
TH1 = -(SYSCLK/BAUDRATE/2/48);
TL1 = TH1;
TR1 = 1;
}
/*============================================================
*
* 函 數(shù) 名
?? 快捷鍵說明
復(fù)制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -