求大神指点，利用串口一接数据，但是接受的十六进制的数据在液晶上面没有显示，求大神指点下问题所在

给心放假吧 · 发表于 2015-7-10 09:57:33

[mw_shl_code=c,true]#include "usart.h" #include "gpio.h" #include "lcd12864.h" #include "sys.h" char str1[]={"?±?°?è±?:"}; char str2[]={"?¤×÷×???: ?ì??"}; char str3[]={"??±ê????: 99 99"}; char *str4; int a=0x05; int num,i,j,len,t; int main(void ) { gpio_init();//IO???????? uart_init(9600);//?®???????????? delay_init();//???±?????????? lcd12864_Config();//???§?????????? write_pos(0,0);//??×?±ê???????????????? num=0; while(str1[num]!='\0') { write_data(str1[num]); num++; } write_pos(1,0);//??×?±ê???????????????? num=0; while(str2[num]!='\0') { write_data(str2[num]); num++; } write_pos(2,0);//??×?±ê???????????????? num=0; while(str3[num]!='\0') { write_data(str3[num]); num++; } while(1) { if(USART_RX_STA&0x8000) {len=USART_RX_STA&0x3f; write_pos(3,0); for(i=0;i<len;i++) write_data(USART_RX_BUF;) void USART1_IRQHandler(void) //?®??1????·??????ò { u16 i,Res; #ifdef OS_TICKS_PER_SEC //?????±?????????¨????,???÷??????ucosII??. OSIntEnter(); #endif if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET) //????????(????????????±?????0x0d 0x0a?á??) { USART_ClearITPendingBit(USART1, USART_IT_RXNE); USART_RX_BUF=USART_ReceiveData(USART1);//(USART1->DR); //???????????????? USART_SendData(USART1,USART_RX_BUF); i++; // write_pos(3,i); //write_data(USART_ReceiveData(USART1)); //i++ /* if((USART_RX_STA&0x8000)==0)//???????ê?? { if(USART_RX_STA&0x4000)//????????0x0d { if(Res!=0x0a)USART_RX_STA=0;//?????í?ó,???????? else USART_RX_STA|=0x8000; //?????ê???? } else //????????0X0D { if(Res==0x0d)USART_RX_STA|=0x4000; else { USART_RX_BUF[USART_RX_STA&0X3FFF]=Res ; USART_RX_STA++; if(USART_RX_STA>(USART_REC_LEN-1))USART_RX_STA=0;//?????????í?ó,???????????? } } } */ } #ifdef OS_TICKS_PER_SEC //?????±?????????¨????,???÷??????ucosII??. OSIntExit(); #endif } #endif void busy_search(void)// { GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.GPIO_Pin=GPIO_Pin_All; GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOF,&GPIO_InitStructure); reset_rs; set_rw; reset_en; //Delay(5); set_en; // Delay(25); while(GPIO_ReadInputDataBit(GPIOF,GPIO_Pin_15)==1); reset_en; GPIO_InitStructure.GPIO_Pin=GPIO_Pin_All; GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP; GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz; GPIO_Init(GPIOF,&GPIO_InitStructure); } void write_cmd(uchar cmd)//????? cmd?????? { busy_search(); reset_rs; reset_rw; reset_en; GPIO_Write(GPIOF,(0xff00&(cmd<<8))); delay_us(5); set_en; delay_us(5); reset_en; } void write_data(u16 dat)//?????, dat?????? { busy_search(); set_rs; reset_rw; reset_en; GPIO_Write(GPIOF,(0xff00&(dat<<8))); delay_us(5); set_en; delay_us(5); reset_en; } void lcd12864_Config()//????? { write_cmd(0x30); write_cmd(0x0c); write_cmd(0x01); } void write_pos(uchar x,uchar y) { uchar pos; if(x==0) { x=0x80; } if(x==1) { x=0x90; } if(x==2) { x=0x88; } if(x==3) { x=0x98; } pos=x+y; write_cmd(pos); }利用串口助手输入字符串可以正常显示，但是如果是十六进制的数据就不行了，跪求大神[/mw_shl_code]