diff options
| -rw-r--r-- | avr/1wire.c | 10 | ||||
| -rw-r--r-- | avr/1wire.h | 2 | ||||
| -rw-r--r-- | avr/main.c | 13 |
3 files changed, 25 insertions, 0 deletions
diff --git a/avr/1wire.c b/avr/1wire.c index 54c8dcc..72722df 100644 --- a/avr/1wire.c +++ b/avr/1wire.c @@ -238,6 +238,16 @@ uint8_t ds1992_scratch_verify(uint16_t addr, const uint8_t* buf, uint8_t len, ui return status; } +void ds1992_scratch_copy(uint16_t addr, uint8_t es_reg) +{ + w1_byte_wr(SKIP_ROM); + w1_byte_wr(0x55); // copy scratchpad to memory + w1_byte_wr((addr & 0x00FF)); + w1_byte_wr((addr & 0xFF00) >> 8); + w1_byte_wr(es_reg); + + while(w1_byte_rd() != 0); +} void w1_command( uint8_t command, uint8_t *id ) { diff --git a/avr/1wire.h b/avr/1wire.h index af48d0b..36160b7 100644 --- a/avr/1wire.h +++ b/avr/1wire.h @@ -28,4 +28,6 @@ void w1_command( uint8_t command, uint8_t *id ); void ds1992_read(uint16_t addr, uint8_t* buf, uint8_t len); void ds1992_scratch_write(uint16_t addr, const uint8_t* buf, uint8_t len); uint8_t ds1992_scratch_verify(uint16_t addr, const uint8_t* buf, uint8_t len, uint8_t* es_reg_ptr); +void ds1992_scratch_copy(uint16_t addr, uint8_t es_reg); + #endif @@ -212,6 +212,19 @@ int main(void) goto write_failed; } + result = w1_reset(); + if (result != 0) + { + replyBuffer[0] = 0x03; + error = 1; + goto write_failed; + } + + // commit the write + ds1992_scratch_copy(writepos, es_reg); + + + replyBuffer[0] = 0xFF; // success error = 0; |