Problem with comparison.
/Modules/TDC/GP201A/SW/PICinterface/1wire.c |
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0,0 → 1,48 |
#define ONE_WIRE_PIN PIN_A1 |
void onewire_reset() |
{ |
output_low(ONE_WIRE_PIN); |
delay_us(500); |
output_float(ONE_WIRE_PIN); |
delay_us(500); |
output_float(ONE_WIRE_PIN); |
} |
void onewire_write(int data) |
{ |
int count; |
for (count=0; count<8; ++count) |
{ |
output_low(ONE_WIRE_PIN); |
delay_us( 2 ); |
output_bit(ONE_WIRE_PIN, shift_right(&data,1,1)); |
delay_us( 60 ); |
output_float(ONE_WIRE_PIN); |
delay_us( 2 ); |
} |
} |
int onewire_read() |
{ |
int count, data; |
for (count=0; count<8; ++count) |
{ |
output_low(ONE_WIRE_PIN); |
delay_us( 2 ); |
output_float(ONE_WIRE_PIN); |
delay_us( 8 ); |
shift_right(&data,1,input(ONE_WIRE_PIN)); |
delay_us( 120 ); |
} |
return( data ); |
} |