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89 lines
2.3 KiB
89 lines
2.3 KiB
#include "uart3.h"
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#include "uartx.h"
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void L0_uart3_init(void)
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{
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#if (MainFre_11M == D_sys_MainFre) //115200bps@11.0592MHz
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S3CON = 0x10; //8位数据,可变波特率
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S3CON |= 0x40; //串口3选择定时器3为波特率发生器
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T4T3M |= 0x02; //定时器3时钟为Fosc,即1T
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T3L = 0xE8; //设定定时初值
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T3H = 0xFF; //设定定时初值
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T4T3M |= 0x08; //启动定时器3
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#elif (MainFre_22M == D_sys_MainFre) //115200bps@22.1184MHz
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S3CON = 0x10; //8位数据,可变波特率
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S3CON |= 0x40; //串口3选择定时器3为波特率发生器
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T4T3M &= 0xFD; //定时器时钟12T模式
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T3L = 0xFC; //设置定时初始值
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T3H = 0xFF; //设置定时初始值
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T4T3M |= 0x08; //定时器3开始计时
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#endif
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}
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void L0_uart3_buf_init(void)
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{
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//定义发送缓冲区
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ts_uart[uNum3].s.buf = ts_send_buf.s3;
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ts_uart[uNum3].s.bufmax = D_send3_max;
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ts_uart[uNum3].s.max = ts_uart[uNum3].s.now = 0;
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ts_uart[uNum3].s.ok = D_ready;
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//定义接收缓冲区
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ts_uart[uNum3].r.buf = ts_recv_buf.r3;
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ts_uart[uNum3].r.bufmax = D_recv3_max;
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ts_uart[uNum3].r.head = 0;
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ts_uart[uNum3].r.ok = 0;
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ts_uart[uNum3].r.idle = 1;
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ts_uart[uNum3].r.overtime_t = 0;
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//串口协议解析专用字段
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// ts_uart[uNum3].tp_handler = L0_uartN_overtime_callback;
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// ts_uart[uNum3].tp_handler = NULL;
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ts_uart[uNum3].uartx = uNum3;
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//串口初始化
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L0_uart3_init();
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//打开串口中断
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D_uart3_ES_INT(1);
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//默认处于接收状态
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//D_UART3_485_RX()
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}
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/*************************************************
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UART 中断
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*************************************************/
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#define D_SERVE_UART3 interrupt 17
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void INTERRUPT_UART3(void) D_SERVE_UART3// using 3
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{
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NOP(); NOP(); NOP();
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if(L0_uart3_IntRI()) //如果是U3接收中断
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{
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L0_uart3_IntRIClear(); //清除接收中断标志
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ts_uart[uNum3].r.reg = S3BUF; //获取当前数据
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L0_uartN_s2b(uNum3); //接收数据至缓冲区
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}
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if(L0_uart3_IntTI()) //如果是U0发送中断
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{
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L0_uart3_IntTIClear(); //清除发送中断标志
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if(ts_uart[uNum3].s.max != ts_uart[uNum3].s.now)
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{
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S3BUF = ts_uart[uNum3].s.p[ts_uart[uNum3].s.now];
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ts_uart[uNum3].s.now ++;
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}
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else
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{
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ts_uart[uNum3].s.ok = D_ready;
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ts_uart[uNum3].s.max = 0;
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ts_uart[uNum3].s.now = 0;//可以发送下一个数据
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//D_UART3_485_RX() //切换到接收状态
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}
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}
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NOP(); NOP(); NOP();
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}
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