#if disp_PA_EN == 1
PORTA |= 0xFF;
asm("nop");
DDRA &= 0X00;
asm("nop");
t = PORTA;
USART_Transmit0(0xaa);
USART_Transmit0(t);
#endif
我想从PA读数然后从USART0通过232发回主机,看结果是否正确,端口的初始值是FF,串口接到的也是这个结果:
AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF
我人为将部分A口接地后还是这个结果:
AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF AA FF
请教我错在哪里,谢谢!!!!!!!!!!!! AVR新手. |
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