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79 lines
2.0 KiB
79 lines
2.0 KiB
4 months ago
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#include "uart0.h"
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#include "uartx.h"
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void L0_uart0_init(void)
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{
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U16 val = D_BRT_COUNT(12, D_sys_MainFre, D_uart0_BRT);
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SCON = 0x50; // 8位数据,可变波特率
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AUXR &= 0xBF; //定时器时钟12T模式
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AUXR &= 0xFE; //串口1选择定时器1为波特率发生器
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TMOD &= 0x0F; //设置定时器模式
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TL1 = val; //设置定时初始值
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TH1 = val >> 8; //设置定时初始值
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ET1 = 0; //禁止定时器中断
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TR1 = 1; //定时器1开始计时
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}
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void L0_uart0_buf_init(void)
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{
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//定义发送缓冲区
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ts_uart[uNum0].s.buf = ts_send_buf.s1;
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ts_uart[uNum0].s.bufmax = D_send1_max;
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ts_uart[uNum0].s.max = ts_uart[uNum0].s.now = 0;
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ts_uart[uNum0].s.ok = D_ready;
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//定义接收缓冲区
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ts_uart[uNum0].r.buf = ts_recv_buf.r1;
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ts_uart[uNum0].r.bufmax = D_recv1_max;
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ts_uart[uNum0].r.head = 0;
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ts_uart[uNum0].r.ok = 0;
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ts_uart[uNum0].r.idle = 1;
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ts_uart[uNum0].r.overtime_t = 0;
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//定义接收处理协议
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ts_uart[uNum0].tp_handler = L0_uartN_overtime_callback;
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ts_uart[uNum0].uartx = uNum0;
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//串口初始化
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L0_uart0_init();
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//打开串口中断
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D_uart0_ES_INT(1);
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//默认处于接收状态
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D_UART0_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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void INTERRUPT_UART(void) D_SERVE_UART
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{
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// NOP(); NOP(); NOP();
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if (L0_uart0_IntRI()) //如果是U0接收中断
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{
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L0_uart0_IntRIClear(); //清除接收中断标志
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ts_uart[uNum0].r.reg = SBUF; //获取当前数据
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L0_uartN_s2b(uNum0); //接收数据至缓冲区
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}
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if (L0_uart0_IntTI()) //如果是U0发送中断
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{
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L0_uart0_IntTIClear(); //清除发送中断标志
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if (ts_uart[uNum0].s.max > ts_uart[uNum0].s.now)
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{
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SBUF = ts_uart[uNum0].s.p[ts_uart[uNum0].s.now];
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ts_uart[uNum0].s.now++;
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}
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else
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{
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ts_uart[uNum0].s.ok = D_ready;
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ts_uart[uNum0].s.max = 0;
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ts_uart[uNum0].s.now = 0; //可以发送下一个数据
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// D_UART0_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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