请各位大师帮我看看为什么我的STM8不能正常485通信
本帖最后由 bin2000163 于 2018-4-7 15:49 编辑data:image/png;base64,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
data:image/png;base64,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
其中PD4是发送接收选择,我依次发送1,2,3...9 串口调试助手接收到的是7F,3F,7E,1F等。这是为什么啊?
void uart_init()
{
UART3_CR1=0x00;
UART3_CR2=0x00;
UART3_CR3|=0x00;
UART3_BRR2=0x00;
UART3_BRR1=0x0D;
UART3_SR=0;
UART3_CR2=0x01;//接收发送中断使能
}
void main( void )
{
unsigned char temp;
temp=1;
//启用内部高速晶振2MHz
CLK_ICKR|=0x01; //开启内部HSI
while(!(CLK_ICKR&0x02));//HSI准备就绪
CLK_SWR=0xe1; //HSI为主时钟源
CLK_CKDIVR=0x18; //2Mhz
asm("rim");
uart_init();
PD_DDR_DDR4=1;
PD_CR1_C14=1;
PD_CR2_C24=0;
PD_ODR_ODR4=1;//默认为发送有效
while(1)
{
UART3_CR2=0x00;//a处
UART3_DR=temp;//要发送的数据
UART3_CR2=0x08;//b处
temp++;
while(!UART3_SR&0X80);
}
}
先看一下TXD的波形,连续发0x55,看一下波特率对不对。 你是发出9个数之和也收到了9个数吗?有可能是波特率不对,也有可能连线上有问题 问题解决了,谢谢大家的关心。我重新整理了一下程序。这不是主要的,之前我将R3和R10从板子上拆掉,R5和R8用导线短接。问题没解决,今天我整理完程序。干脆把VD1和VD2也拆掉。结果串口调试助手能接收到发送的数据,接收设置用十六进制。接收区显示01 02 03 04...0A...。另外,当初我曾经担心线接反了,所以把A,B的线掉了一下,今天又掉了回来。总之电脑能接收数据,我还没试板子接收数据情况。上边问题困扰了我3个星期,今天总算有了进展,心情有些激动。先把情况和大家说说,下一步准备完善板子的程序,如果有问题还要请教大家。谢谢了!以下是我测试UART3的整理后的程序:
void main( void )
{
unsigned char temp;
temp=1;
asm("sim"); // 关全局中断
//初始化系统时钟////////////////////////////
//启用内部高速晶振2MHz
CLK_ECKR=0x00;
CLK_ICKR=0x01; //开启内部HSI
while(!(CLK_ICKR&0x02));//HSI准备就绪
CLK_SWR=0xe1; //HSI为主时钟源
CLK_CKDIVR=0x18; //HSI 2MHz
//初始化系统时钟结束///////////////////////
//初始化UART3//////////////////////////////
UART3_CR1=0x00;
UART3_CR2=0x00;
UART3_CR3=0x00;
UART3_BRR2=0X00;
UART3_BRR1=0X0D;
UART3_SR=0;
UART3_CR2|=0x2C;//接收发送中断使能
asm("rim"); //开全局中断
PD_DDR_DDR4=1;
PD_CR1_C14=1;
PD_CR2_C24=0;
PD_ODR_ODR4=1; //rs485默认为发送
while(1)
{
UART3_CR2=0x00;//a处
UART3_DR=temp;//要发送的数据
UART3_CR2=0x08;//b处
temp++;
while(!UART3_SR&0X80);
}
} 今天我把摘下的元件重新焊回板子,通信依然正常。看来以前是程序的问题,原电路没有问题。 今天我重新将元件焊回电路,通信依然正常。看来以前是程序的问题,电路没问题。另外,电路中的R5和R8实际焊的是10欧电阻,这里更正一下。 都是满满的经验 您好,我也遇到了您这样的问题,但是我之前测试过这个程序是没有问题的。请问这个问题应该怎么查找呢?
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