139 lines
3.2 KiB
C
139 lines
3.2 KiB
C
#ifndef _UART_C_
|
|
#define _UART_C_
|
|
#include "ca51f5_config.h"
|
|
#include "../../includes/ca51f5sfr.h"
|
|
#include "../../includes/ca51f5xsfr.h"
|
|
#include "../../includes/gpiodef_f5.h"
|
|
#include "../../includes/system.h"
|
|
|
|
#include "../../Library/includes/uart.h"
|
|
#include <intrins.h>
|
|
#include <string.h>
|
|
#include <stdarg.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <absacc.h>
|
|
/*********************************************************************************************************************/
|
|
/*********************************************************************************************************************/
|
|
#ifdef UART0_EN
|
|
/*********************************************************************************************************************
|
|
注意：以下波特率配置参数前提条件是系统时钟为16MHz，如果修改系统时钟频率，波特率配置参数须另行计算。
|
|
***********************************************************************************************************************/
|
|
void Uart0_Initial(unsigned long int baudrate)
|
|
{
|
|
code unsigned long int BR_TAB[]=
|
|
{
|
|
1200,
|
|
2400,
|
|
4800,
|
|
9600,
|
|
19200,
|
|
38400,
|
|
57600,
|
|
115200,
|
|
};
|
|
code unsigned int BR_SET_TAB[][2]=
|
|
{
|
|
{416,31},
|
|
{208,31},
|
|
{104,31},
|
|
{52,31},
|
|
{26,31},
|
|
{13,31},
|
|
{10,27},
|
|
{5,27},
|
|
};
|
|
unsigned int value_temp;
|
|
unsigned char i;
|
|
|
|
uart0_send.head = 0;
|
|
uart0_send.tail = 0;
|
|
uart0_rev.head = 0;
|
|
uart0_rev.tail = 0;
|
|
uart0_tx_flag = 0;
|
|
|
|
GPIO_Init(P31F,P31_UART0_RX_SETTING);
|
|
GPIO_Init(P30F,P30_UART0_TX_SETTING);
|
|
|
|
for(i=0;i<sizeof(BR_TAB)/4;i++)
|
|
{
|
|
if(baudrate == BR_TAB[i])
|
|
{
|
|
value_temp = 0x10000 - BR_SET_TAB[i][0];
|
|
UDCKS = 0x80 | BR_SET_TAB[i][1];
|
|
break;
|
|
}
|
|
}
|
|
if(i == sizeof(BR_TAB)/4) return; //如果所设置的波特率不在表格中，可自行添加。
|
|
|
|
T2CON = 0x24;
|
|
T2CH = (unsigned char)(value_temp>>8);
|
|
T2CL = (unsigned char)(value_temp);
|
|
TH2 = (unsigned char)(value_temp>>8);
|
|
TL2 = (unsigned char)(value_temp);;
|
|
TR2 = 1;
|
|
|
|
S0CON = 0x50;
|
|
ES0 = 1;
|
|
}
|
|
void Uart0_PutChar(unsigned char bdat)
|
|
{
|
|
unsigned char free_space;
|
|
unsigned char tail_tmp;
|
|
while(1)
|
|
{
|
|
tail_tmp = uart0_send.tail;
|
|
if(uart0_send.head < tail_tmp)
|
|
{
|
|
free_space = tail_tmp - uart0_send.head;
|
|
}
|
|
else
|
|
{
|
|
free_space = UART0_TX_BUF_SIZE + tail_tmp - uart0_send.head;
|
|
}
|
|
if(free_space > 1)
|
|
{
|
|
ES0 = 0;
|
|
uart0_send.head++;
|
|
uart0_send.head %= UART0_TX_BUF_SIZE;
|
|
uart0_tx_buf[uart0_send.head] = bdat;
|
|
if(!uart0_tx_flag)
|
|
{
|
|
ES0 = 1;
|
|
uart0_send.tail++;
|
|
uart0_send.tail %= UART0_TX_BUF_SIZE;
|
|
S0BUF=uart0_tx_buf[uart0_send.tail];
|
|
uart0_tx_flag = 1;
|
|
}
|
|
else
|
|
{
|
|
ES0 = 1;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
void UART0_RX_ISR (void)
|
|
{
|
|
RI0 = 0;
|
|
uart0_rev.head++;
|
|
uart0_rev.head %= UART0_RX_BUF_SIZE;
|
|
uart0_rx_buf[uart0_rev.head]=S0BUF;
|
|
}
|
|
void UART0_TX_ISR (void)
|
|
{
|
|
TI0 = 0;
|
|
if(uart0_send.head!=uart0_send.tail)
|
|
{
|
|
uart0_send.tail++;
|
|
uart0_send.tail %= UART0_TX_BUF_SIZE;
|
|
S0BUF=uart0_tx_buf[uart0_send.tail];
|
|
}
|
|
else
|
|
{
|
|
uart0_tx_flag=0;
|
|
}
|
|
}
|
|
#endif
|
|
/*********************************************************************************************************************/
|
|
#endif |