#include "uart3.h"
#include "uartx.h"

void L0_uart3_init(void)
{
#if (MainFre_11M == D_sys_MainFre)	//115200bps@11.0592MHz
	S3CON = 0x10;		//8位数据,可变波特率
	S3CON |= 0x40;		//串口3选择定时器3为波特率发生器
	T4T3M |= 0x02;		//定时器3时钟为Fosc,即1T
	T3L = 0xE8;		//设定定时初值
	T3H = 0xFF;		//设定定时初值
	T4T3M |= 0x08;		//启动定时器3

#elif (MainFre_22M == D_sys_MainFre)	//115200bps@22.1184MHz
	S3CON = 0x10;		//8位数据,可变波特率
	S3CON |= 0x40;		//串口3选择定时器3为波特率发生器
	T4T3M &= 0xFD;		//定时器时钟12T模式
	T3L = 0xFC;			//设置定时初始值
	T3H = 0xFF;			//设置定时初始值
	T4T3M |= 0x08;		//定时器3开始计时

#endif

}

void L0_uart3_buf_init(void)
{
	//定义发送缓冲区
	ts_uart[uNum3].s.buf = ts_send_buf.s3;
	ts_uart[uNum3].s.bufmax = D_send3_max;
	ts_uart[uNum3].s.max = ts_uart[uNum3].s.now = 0;
	ts_uart[uNum3].s.ok = D_ready;

	//定义接收缓冲区
	ts_uart[uNum3].r.buf = ts_recv_buf.r3;
	ts_uart[uNum3].r.bufmax = D_recv3_max;
	ts_uart[uNum3].r.head = 0;
	ts_uart[uNum3].r.ok = 0;
	ts_uart[uNum3].r.idle = 1;
	ts_uart[uNum3].r.overtime_t = 0;

	//串口协议解析专用字段
	ts_uart[uNum3].tp_handler = L0_uartN_overtime_callback; 
	ts_uart[uNum3].uartx = uNum3;

	//串口初始化
	L0_uart3_init();

	//打开串口中断
	D_uart3_ES_INT(1); 

	//默认处于接收状态
	//D_UART3_485_RX() 
}

/*************************************************
UART 中断
*************************************************/
#define D_SERVE_UART3   interrupt 17
void INTERRUPT_UART3(void)  D_SERVE_UART3// using 3
{
	NOP();	NOP();	NOP();
	if(L0_uart3_IntRI())					//如果是U3接收中断	
	{
		L0_uart3_IntRIClear(); 				//清除接收中断标志
		ts_uart[uNum3].r.reg = S3BUF;	//获取当前数据
		L0_uartN_s2b(uNum3);	//接收数据至缓冲区
	}
	if(L0_uart3_IntTI())				//如果是U0发送中断
	{
		L0_uart3_IntTIClear();			//清除发送中断标志
		if(ts_uart[uNum3].s.max != ts_uart[uNum3].s.now)
		{
			S3BUF  = ts_uart[uNum3].s.p[ts_uart[uNum3].s.now];
			ts_uart[uNum3].s.now ++;
		}
		else
		{
			ts_uart[uNum3].s.ok = D_ready;
			ts_uart[uNum3].s.max = 0;
			ts_uart[uNum3].s.now = 0;//可以发送下一个数据
			//D_UART3_485_RX() //切换到接收状态
		}
	}
	NOP();	NOP();	NOP();
}