www.pudn.com > new_terminal.rar > test_uart.c
/*********************************************
*测试程序的显示终端，提供基本的
*显示函数。
*建立日期:2006-2-14
*文件名澹:Test_uart.c
*
*
*
*
*
******************************************/
#include
#include
#include
#include "2410addr.h"
#include "2410lib.h"
#include "Option.h"
#include "Def.h"
#include
#include
static int whichUart=0;
static int delayLoopCount = FCLK/10000/10;
char str[256];
//========================*[ Timer ]==============================**
void Timer_Start(int divider) //0:16us,1:32us 2:64us 3:128us
{
rWTCON = ((PCLK/1000000-1)<<8)|(divider<<3); //Watch-dog timer control register
rWTDAT = 0xffff; //Watch-dog timer data register
rWTCNT = 0xffff; //Watch-dog count register
//Watch-dog timer enable & interrupt disable
// rWTCON = rWTCON |(1<<5) & !(1<<2); //?
rWTCON = rWTCON | (1<<5) | ~(1<<2); //May 06, 2002 SOP
}
//=================================================================
int Timer_Stop(void)
{
rWTCON = ((PCLK/1000000-1)<<8);
return (0xffff - rWTCNT);
}
void Delay(int time)
{
// time=0: adjust the Delay function by WatchDog timer.
// time>0: the number of loop time
// resolution of time is 100us.
int i,adjust=0;
if(time==0)
{
time = 200;
adjust = 1;
delayLoopCount = 400;
//PCLK/1M,Watch-dog disable,1/64,interrupt disable,reset disable
rWTCON = ((PCLK/1000000-1)<<8)|(2<<3);
rWTDAT = 0xffff; //for first update
rWTCNT = 0xffff; //resolution=64us @any PCLK
rWTCON = ((PCLK/1000000-1)<<8)|(2<<3)|(1<<5); //Watch-dog timer start
}
for(;time>0;time--)
for(i=0;i64us, 200*400 cycle runtime = 64*i us
delayLoopCount = 8000000/(i*64); //200*400:64*i=1*x:100 -> x=80000*100/(64*i)
}
}
void Uart_Init(int pclk,int baud){
int i;
if(pclk == 0)
pclk = PCLK;
rUFCON0 = 0x0; //UART channel 0 FIFO control register, FIFO disable
rUFCON1 = 0x0; //UART channel 1 FIFO control register, FIFO disable
rUFCON2 = 0x0; //UART channel 2 FIFO control register, FIFO disable
rUMCON0 = 0x0; //UART chaneel 0 MODEM control register, AFC disable
rUMCON1 = 0x0; //UART chaneel 1 MODEM control register, AFC disable
//UART0
rULCON0 = 0x3;
rUCON0 = 0x245; // Control register
rUBRDIV0=( (int)(pclk/16./baud) -1 ); //Baud rate divisior register 0
// rUBRDIV0=( (int)(pclk/16./baud+0.5) -1 ); //Baud rate divisior register 0
//UART1
rULCON1 = 0x3;
rUCON1 = 0x245;
rUBRDIV1=( (int)(pclk/16./baud) -1 );
//UART2
rULCON2 = 0x3;
rUCON2 = 0x245;
rUBRDIV2=( (int)(pclk/16./baud) -1 );
for(i=0;i<100;i++);
}
void Uart_Select(int ch)
{
whichUart = ch;
}
char Uart_Getch(void)
{
if(whichUart==0)
{
while(!(rUTRSTAT0 & 0x1)); //Receive data ready
return RdURXH0();
}
else if(whichUart==1)
{
while(!(rUTRSTAT1 & 0x1)); //Receive data ready
return RdURXH1();
}
else if(whichUart==2)
{
while(!(rUTRSTAT2 & 0x1)); //Receive data ready
return RdURXH2();
}
}
void Uart_Putch(char c)
{
if(whichUart==0)
{
while(!(rUTRSTAT0 & 0x2)); //Receive data ready
WrUTXH0(c);
}
else if(whichUart==1)
{
while(!(rUTRSTAT1 & 0x2)); //Receive data ready
WrUTXH0(c);
}
else if(whichUart==2)
{
while(!(rUTRSTAT2 & 0x2)); //Receive data ready
WrUTXH0(c);
}
}
void Uart_SendByte(int data)
{
if(whichUart==0)
{
if(data=='\n')
{
while(!(rUTRSTAT0 & 0x2));
//Delay(0); //because the slow response of hyper_terminal
WrUTXH0('\r');
}
while(!(rUTRSTAT0 & 0x2)); //Wait until THR is empty.
//Delay(10);
WrUTXH0(data);
}
else if(whichUart==1)
{
if(data=='\n')
{
while(!(rUTRSTAT1 & 0x2));
//Delay(0); //because the slow response of hyper_terminal
rUTXH1 = '\r';
}
while(!(rUTRSTAT1 & 0x2)); //Wait until THR is empty.
//Delay(0);
rUTXH1 = data;
}
else if(whichUart==2)
{
if(data=='\n')
{
while(!(rUTRSTAT2 & 0x2));
//Delay(0); //because the slow response of hyper_terminal
rUTXH2 = '\r';
}
while(!(rUTRSTAT2 & 0x2)); //Wait until THR is empty.
//Delay(0);
rUTXH2 = data;
}
}
void Uart_SendString(char *pt)
{
while(*pt)
Uart_SendByte(*pt++);
}
void Uart_Printf(char *fmt,...)
{
va_list ap;
char string[256];
va_start(ap,fmt);
vsprintf(string,fmt,ap);
Uart_SendString(string);
va_end(ap);
}
void Uart_Getchmd(char *cmd_buf, unsigned int len)
{
char curpos = 0; /* current position - index into cmd_buf */
char c;
int cmd_echo = 1;
/* Clear out the buffer */
memset(cmd_buf, 0, MAX_CMDBUF_SIZE);
for (;;) {
c = Uart_Getch();
switch (c) {
case 0x08:
case 0x06:
case 0x07:
case 0x7E:
case 0x7F: /* backspace or delete */
/* we're not at the beginning of the line */
if (curpos) {
curpos--;
Uart_Putch(0x08); /* go backwards */
Uart_Putch(' '); /* overwrite the char */
Uart_Putch(0x08); /* go back again */
}
cmd_buf[curpos] = '\0';
break;
case '\r':
case '\n':
case '\0':
Uart_Putch('\r');
Uart_Putch('\n');
goto end_cmd;
case CTL_CH('x'):
curpos = 0;
break;
default:
if (curpos < MAX_CMDBUF_SIZE) {
cmd_buf[curpos] = c;
/* echo it back out to the screen */
if (cmd_echo)
Uart_Putch(c);
curpos++;
}
break;
}
}
end_cmd:
return ;
}
#define MAX_PROMPT_LEN 256
char prompt[MAX_PROMPT_LEN] = "Please enter the test code ：";
static void exeprogram(int i)
{
switch (i)
{
case 1:
Uart_Printf("\n调用LCD的DMA测试程序！\n");
break;
case 2:
Uart_Printf("\n调用IIS的DMA测试程序！\n");
break;
case 3:
Uart_Printf("\n调用cs8900的测试程序！\n");
break;
default:
goto handle_error;
}
return;
handle_error:
Uart_Printf("\n你输入的代码有误，查看代码命令menu\n");
}
static void menu(void)
{
Uart_Printf("\n**************************************************\n");
Uart_Printf("**************************************************\n");
Uart_Printf("** **\n");
Uart_Printf("** 1.LCD测试 2.IIS 测试 3.cs8900测试 **\n");
Uart_Printf("** **\n");
Uart_Printf("** **\n");
Uart_Printf("**************************************************\n");
}
void show(char * address_buf)
{
int Base_address,offset,temp,i;
Base_address=(int)strtol(address_buf,(char **)NULL,16);
Uart_Printf("The Base address you type here is 0x%08x \n",Base_address);
Uart_Printf("===============================================================\n");
for(offset=0;offset<144;offset++)
{
temp=(*(volatile unsigned char *)(Base_address+offset));
Uart_Printf("%02X ",temp);
if((offset+1)%16==0)
{
for(i=offset-15;i47 && temp<122)
Uart_Printf("%c",temp);
else
Uart_Printf("_");
}
Uart_Printf("\n");
}
}
Uart_Printf("\n");
}
static void execmd(char * buf)
{
if(!strcmp(buf,"menu")) menu();
else if (!strcmp(buf,"clear")) clear();
else if (!strncmp(buf,"show",4)) show(buf+5);
//else Uart_Printf(" ",buf);
}
void clear(void)
{
int i;
char cmd_buf[MAX_CMDBUF_SIZE];
for(i=0;i<25;i++)
{
Uart_Putch('\r'); //换行
Uart_Putch('\n'); //回车
}
for(i=0;i<25;i++)
{
Uart_Putch(0x08); /* go backwards */
Uart_Putch(' '); /* overwrite the char */
Uart_Putch(0x08); /* go back again *///
}
Uart_Getchmd(cmd_buf, MAX_CMDBUF_SIZE);
i=(int)strtod(cmd_buf,(char **)NULL);
if (i)//如果是数字就进入主程序中去，否则看是否是命令
exeprogram(i);
else if(cmd_buf[0]) execmd(cmd_buf);
}
static void serial_term(void)
{
char cmd_buf[MAX_CMDBUF_SIZE];
int i;
for (;;) {
Uart_Printf("%s", prompt);
Uart_Getchmd(cmd_buf, MAX_CMDBUF_SIZE);
i=(int)strtod(cmd_buf,(char **)NULL);
if (i)//如果是数字就进入主程序中去，否则看是否是命令
exeprogram(i);
else if(cmd_buf[0]) execmd(cmd_buf);
}
}
int main (void)
{
Uart_Init(0,115200);//pclk 和波特率
Uart_Select(0);//串口选择
Delay(500);
serial_term();
return 0;
}