| 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 ); |
| } |