Dear Raphael,
Thank you for you reply.
I have inserted the my answers, rigth after your questions.
Raphael Neider írta:
>> void init_ports()
>> {
>> PORTA = 0;
>> PORTB = 0;
>> PORTC = 0;
>>
>> __asm
>> banksel PORTA
>> movf PORTA,W
>> movf PORTB,W
>> __endasm;
>>
>> ANSEL = ADC_CHANNEL_ANSEL;
>> ANSELH = 0;
>>
>> TRISA = 0xff; // all input
>> TRISB = OUT_TxD;
>> TRISC = 0xc6;
>
> Hopefully ADC_CHANNEL_ANSEL has the 2 LSb clear
> to make RA<1:0> digital I/O pins?
I have one analog channel configured for AN2 - PortA2.
It is a constant with the value of 4, so the lower two bits are clear.
> Check for all pins used wether there is a second/third/...
> function multiplexed on them (clock input/output, timer,
> serial communication to name a few).
I were stepping through the datasheet, searching for small indirect
information content, but without any success.
I have also checked AN556 about IOC.
> And what's OUT_TxD, does it configure the IOC-pins as inputs?
OUT_TxD is also a constant = 0x7f
I use serial port for commands and for debugging.
> Which pins work? Which do not? Or can you make all of them work,
> but not any two/three/four together?
Unfortunately, only PORTA0 and PORTB0 works when all should...
Individually, all works... this latter fact drives me crazy.
In the whole project,
Serial port: works
ADC: works
Measuring the impulse length: works
Calculating impulse length with multiplication: works
Unfortunately, I have 50% (2 channel) capacity/functionality instead of
100% (4 channel)
Theblond
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