spi 分时复用做UART

发表于 2019-10-15 19:41

ht66fu50串口接收后会一直发送
if(_xpf)
{

_xpf=0;
_mf2f=0;
Register.usr = UARTBridgeSPI(ReadUSR,0);
if(Register.Flag.rxif==1&Register.Flag.ridle==1)
{
ReceData[n] = UARTBridgeSPI(ReadFIFO,0x01);
_delay(100);
n++;
}

if(Register.Flag.txif==1)
{

   UARTBridgeSPI(WriteFIFO,ReceData[0]);
   _delay(100);
   j++;
}
if(j>19)
   {j=0x00;n=0;_nop();}//}break}
_xpf=0;
_mf2f=0;
}

发表于 2019-10-15 20:22

/*-----------------------------------
Function: UART receive and tx
Input:
Output:
Note:
-----------------------------------*/
void UARTAccess(void)
{
uint8 ReceData[20];
uint8 n=0;
uint8 j=0;
if(_xpf)
{

_xpf=0;
_mf2f=0;
Register.usr = UARTBridgeSPI(ReadUSR,0);
if(Register.Flag.rxif==1&Register.Flag.ridle==1)
{
ReceData[n] = UARTBridgeSPI(ReadFIFO,0x01);
_delay(100);
n++;
}

if(Register.Flag.txif==1)
{

   UARTBridgeSPI(WriteFIFO,ReceData[j]);
   _delay(100);
   j++;
}
if(j>19)
   {j=0x00;n=0;_nop();}//}break}
_xpf=0;
_mf2f=0;
}
}

[国产单片机] spi 分时复用做UART

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