input_b error, this dont read 0x00 from all port bits

[Freesat]

hi..

i need read from port b or portd the value of byte ( reading parallel port ) and also send it from rs232 tx and rx on portc

using input_d() i can read value of byte, but if this value is 0x00 input_d() dont return value.

i need your help to solve this..


#int_ext
void ext_isr() {
Uart_ByteSend( input_d() );
}

function uart_bytesend only send it to i/o buffer register

rs-232 is work fine
if i send Uart_ByteSend( 0x00 ) the byte is send correct.

[Mark]

[PCM programmer]

You need to post the PIC that you're using and the compiler version.
Then we can look at the generated code.