我的战舰STM32开发板智能发送数据，不能接收。

腾飞的红 · 发表于 2015-3-22 11:31:36

RS485_Receive_Data(rs485buf,&len);
if(len != 0||rs485buf[0]!=0||key==KEY_UP)
{
RS485_Send_Data(rs485buf,1);
BEEP=1;//关闭蜂鸣器
delay_ms(100);
BEEP=0;
LCD_ShowxNum(60,170,rs485buf[0],3,16,0X80);
LCD_ShowxNum(60,190,len,3,16,0X80);
delay_ms(10000);
}
else
{
Show_Str(60,170,200,16,"XXX",16,0);
Show_Str(60,190,200,16,"XXX",16,0);
delay_ms(2000);
}
当我利用上面的程序是，通过串口调试助手发送数据，无论无论发送什么，都是去执行“else”。为什么？求指教

腾飞的红 · 发表于 2015-3-22 11:31:37

回复【3楼】正点原子:
---------------------------问题已经解决，是硬件的问题。开发板上的两个接线帽接触不良造成的。

腾飞的红 · 发表于 2015-3-22 11:41:58

我的全部程序如下，求指教
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%5
#include "sys.h"
#include "usart.h"
#include "delay.h"
#include "led.h"
#include "beep.h"
#include "key.h"
#include "exti.h"
#include "wdg.h"
#include "timer.h"
#include "tpad.h"
#include "oled.h"
#include "lcd.h"
#include "usmart.h"
#include "rtc.h"
#include "wkup.h"
#include "adc.h"
#include "dac.h"
#include "dma.h"
#include "24cxx.h"
#include "flash.h"
#include "rs485.h"
#include "can.h"
#include "touch.h"
#include "remote.h"
#include "joypad.h"
#include "adxl345.h"
#include "ds18b20.h"
#include "dht11.h"
#include "24l01.h"
#include "mouse.h"
#include "stmflash.h"
#include "rda5820.h"
#include "audiosel.h"
#include "ov7670.h"
#include "sram.h"
#include "malloc.h"
#include "string.h"
#include "mmc_sd.h"
#include "ff.h"
#include "exfuns.h"
#include "fontupd.h"
#include "text.h"
#include "text.h"
#include "piclib.h"

//ALIENTEK战舰STM32开发板实验43
//照相机实验
//技术支持：www.openedv.com
//广州市星翼电子科技有限公司

extern u8 ov_sta; //在exit.c里面定义
extern u8 ov_frame; //在timer.c里面定义
//更新LCD显示
int main(void)
{
u8 res;
u8 *pname; //带路径的文件名
u8 key; //键值
u8 i;
u8 rs485buf[2];
u8 len;

Stm32_Clock_Init(9); //系统时钟设置
delay_init(72); //延时初始化
uart_init(72,9600); //串口1初始化
LCD_Init(); //初始化液晶
if(lcddev.id==0X6804||lcddev.id==0X5310) //强制设置屏幕分辨率为320*240.以支持3.5寸大屏
{
lcddev.width=240;
lcddev.height=320;
}
LED_Init(); //LED初始化
BEEP_Init(); //蜂鸣器初始化
KEY_Init(); //按键初始化
usmart_dev.init(72); //usmart初始化
mem_init(SRAMIN); //初始化内部内存池
RS485_Init(36,57600); //初始化RS485
exfuns_init(); //为fatfs相关变量申请内存
f_mount(0,fs[0]); //挂载SD卡
f_mount(1,fs[1]); //挂载FLASH.
piclib_init(); //初始化画图

POINT_COLOR=RED;
while(font_init()) //检查字库
{
LCD_ShowString(60,50,200,16,16,"Font Error!");
delay_ms(200);
LCD_Fill(60,50,240,66,WHITE);//清除显示
}
while(OV7670_Init())//初始化OV7670
{
Show_Str(60,230,240,16,"OV7670 错误!",16,0);
delay_ms(200);
LCD_Fill(60,190,239,206,WHITE);
delay_ms(200);
}
//Show_Str(60,230,200,16,"OV7670 正常",16,0);
delay_ms(1500);
TIM6_Int_Init(10000,7199); //10Khz计数频率,1秒钟中断
EXTI8_Init(); //使能定时器捕获
OV7670_Window_Set(10,174,240,320); //设置窗口
OV7670_CS=0;
rs485buf[0]=0;
len = 0;
while(1)
{
key=KEY_Scan(1);//不支持连按
rs485buf[0]=0;
RS485_Receive_Data(rs485buf,&len);
//key=0;
//RS485_Send_Data(rs485buf,1);
if(len != 0||rs485buf[0]!=0||key==KEY_UP)
{
RS485_Send_Data(rs485buf,1);
BEEP=1;//关闭蜂鸣器
delay_ms(100);
BEEP=0;
LCD_ShowxNum(60,170,rs485buf[0],3,16,0X80);
LCD_ShowxNum(60,190,len,3,16,0X80);
delay_ms(10000);
}
else
{
Show_Str(60,170,200,16,"XXX",16,0);
Show_Str(60,190,200,16,"XXX",16,0);
delay_ms(2000);
}
rs485buf[0]=0;
len = 0;
i++;
if(i==20)//DS0闪烁.
{
i=0;
LED0=!LED0;
}
}
}