static int xc0324_callback(r_device *decoder, bitbuffer_t *bitbuffer)
{
int r; // a row index
uint16_t bitpos;
int result;
int events = 0;
data_t *data = NULL;
// Only for simulating initial package level deciphering / debug.
if (decoder->verbose == 2) {
// Verbosely output the bitbuffer
decoder_output_bitbufferf(decoder, bitbuffer, "XC0324:vvv hex(/binary) version of bitbuffer");
// And then output each row to csv, json or whatever was specified.
for (r = 0; r < bitbuffer->num_rows; ++r) {
decoder_output_bitrowf(decoder, bitbuffer->bb[r], bitbuffer->bits_per_row[r],
"XC0324:vvv row %03d", r);
}
}
//A clean XC0324 transmission contains 3 repeats of a message in a single row.
//But in case of transmission or demodulation glitches,
//loop over all rows and check for salvageable messages.
for (r = 0; r < bitbuffer->num_rows; ++r) {
if (bitbuffer->bits_per_row[r] < XC0324_MESSAGE_BITLEN) {
// bail out of this "too short" row early
if (decoder->verbose == 1) {
// Output the bad row, only for message level debug / deciphering.
decoder_output_bitrowf(decoder, bitbuffer->bb[r], bitbuffer->bits_per_row[r],
"Bad message need %d bits got %d <- XC0324:vv row %d bit %d",
XC0324_MESSAGE_BITLEN, bitbuffer->bits_per_row[r], r, 0);
}
continue; // to the next row
}
// We have enough bits so search for a message preamble followed by
// enough bits that it could be a complete message.
bitpos = 0;
while ((bitpos = bitbuffer_search(bitbuffer, r, bitpos,
(const uint8_t *)&preamble_pattern, 8))
+ XC0324_MESSAGE_BITLEN <= bitbuffer->bits_per_row[r]) {
events += result = decode_xc0324_message(decoder, bitbuffer,
r, bitpos, events, &data);
// Keep production output (decoder->verbose == 0) separate from
// (simulated) development stage output (decoder->verbose > 0)
if (result & !decoder->verbose) { // Production output
data_append(data, "message_num", "Message repeat count",
DATA_INT, events, NULL);
decoder_output_data(decoder, data);
return events; // in production, first successful decode is enough
}
bitpos += XC0324_MESSAGE_BITLEN;
}
}
// (Only) for future regression tests.
if ((decoder->verbose == 3) & (events == 0)) {
decoder_output_messagef(decoder, "XC0324:vvvv Reference -> Bad transmission");
}
return events;
}
static int oil_standard_callback(r_device *decoder, bitbuffer_t *bitbuffer) {
unsigned bitpos = 0;
int events = 0;
// Find a preamble with enough bits after it that it could be a complete packet
while ((bitpos = bitbuffer_search(bitbuffer, 0, bitpos, (uint8_t *)&preamble_pattern0, 16)) + 78 <=
bitbuffer->bits_per_row[0]) {
events += oil_standard_decode(decoder, bitbuffer, 0, bitpos + 14);
bitpos += 2;
}
bitpos = 0;
while ((bitpos = bitbuffer_search(bitbuffer, 0, bitpos, (uint8_t *)&preamble_pattern1, 16)) + 78 <=
bitbuffer->bits_per_row[0]) {
events += oil_standard_decode(decoder, bitbuffer, 0, bitpos + 14);
bitpos += 2;
}
return events;
}
static int tpms_citroen_callback(bitbuffer_t *bitbuffer) {
unsigned bitpos = 0;
int events = 0;
// Find a preamble with enough bits after it that it could be a complete packet
while ((bitpos = bitbuffer_search(bitbuffer, 0, bitpos, (uint8_t *)&preamble_pattern, 16)) + 178 <=
bitbuffer->bits_per_row[0]) {
events += tpms_citroen_decode(bitbuffer, 0, bitpos + 16);
bitpos += 2;
}
return events;
}
static int current_cost_callback(bitbuffer_t *bitbuffer) {
bitbuffer_invert(bitbuffer);
bitrow_t *bb = bitbuffer->bb;
uint8_t *b = bb[0];
char time_str[LOCAL_TIME_BUFLEN];
data_t *data;
local_time_str(0, time_str);
uint8_t init_pattern[] = {
0b11001100, //8
0b11001100, //16
0b11001100, //24
0b11001110, //32
0b10010001, //40
0b01011101, //45 (! last 3 bits is not init)
};
unsigned int start_pos = bitbuffer_search(bitbuffer, 0, 0, init_pattern, 45);
if(start_pos == bitbuffer->bits_per_row[0]){
return 0;
}
start_pos += 45;
bitbuffer_t packet_bits = {0};
start_pos = bitbuffer_manchester_decode(bitbuffer, 0, start_pos, &packet_bits, 0);
uint8_t *packet = packet_bits.bb[0];
// Read data
if(packet_bits.bits_per_row[0] >= 56 && ((packet[0] & 0xf0) == 0) ){
uint16_t device_id = (packet[0] & 0x0f) << 8 | packet[1];
uint16_t watt0 = (packet[2] & 0x7F) << 8 | packet[3] ;
uint16_t watt1 = (packet[4] & 0x7F) << 8 | packet[5] ;
uint16_t watt2 = (packet[6] & 0x7F) << 8 | packet[7] ;
data = data_make("time", "", DATA_STRING, time_str,
"model", "", DATA_STRING, "CurrentCost TX", //TODO: it may have different CC Model ? any ref ?
//"rc", "Rolling Code", DATA_INT, rc, //TODO: add rolling code b[1] ? test needed
"dev_id", "Device Id", DATA_FORMAT, "%d", DATA_INT, device_id,
"power0", "Power 0", DATA_FORMAT, "%d W", DATA_INT, watt0,
"power1", "Power 1", DATA_FORMAT, "%d W", DATA_INT, watt1,
"power2", "Power 2", DATA_FORMAT, "%d W", DATA_INT, watt2,
//"battery", "Battery", DATA_STRING, battery_low ? "LOW" : "OK", //TODO is there some low battery indicator ?
NULL);
data_acquired_handler(data);
return 1;
}
return 0;
}
static int ge_coloreffects_callback(r_device *decoder, bitbuffer_t *bitbuffer) {
unsigned bitpos = 0;
int events = 0;
// Find a preamble with enough bits after it that it could be a complete packet
// (if the device id and command were all zeros)
while ((bitpos = bitbuffer_search(bitbuffer, 0, bitpos, (uint8_t *)&preamble_pattern, 24)) + 57 <=
bitbuffer->bits_per_row[0]) {
events += ge_coloreffects_decode(decoder, bitbuffer, 0, bitpos + 24);
bitpos++;
}
return events;
}
static int oil_watchman_callback(bitbuffer_t *bitbuffer) {
uint8_t *b;
uint32_t unit_id;
uint16_t depth = 0;
uint16_t binding_countdown = 0;
uint8_t flags;
uint8_t maybetemp;
double temperature;
char time_str[LOCAL_TIME_BUFLEN];
data_t *data;
unsigned bitpos = 0;
bitbuffer_t databits = {0};
int events = 0;
local_time_str(0, time_str);
// Find a preamble with enough bits after it that it could be a complete packet
while ((bitpos = bitbuffer_search(bitbuffer, 0, bitpos, &preamble_pattern, 6)) + 136 <=
bitbuffer->bits_per_row[0]) {
// Skip the matched preamble bits to point to the data
bitpos += 6;
bitpos = bitbuffer_manchester_decode(bitbuffer, 0, bitpos, &databits, 64);
if (databits.bits_per_row[0] != 64)
continue;
b = databits.bb[0];
// Check for postamble, depending on last data bit
if (bitbuffer_search(bitbuffer, 0, bitpos, &postamble_pattern[b[7] & 1], 2) != bitpos)
continue;
if (b[7] != crc8le(b, 7, 0x31, 0))
continue;
// The unit ID changes when you rebind by holding a magnet to the
// sensor for long enough; it seems to be time-based.
unit_id = (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | b[3];
// 0x01: Rebinding (magnet held to sensor)
// 0x08: Leak/theft alarm
// top three bits seem also to vary with temperature (independently of maybetemp)
flags = b[4];
// Not entirely sure what this is but it might be inversely
// proportional to temperature.
maybetemp = b[5] >> 2;
temperature = (double)(145.0 - 5.0 * maybetemp) / 3.0;
if (flags & 1)
// When binding, the countdown counts up from 0x51 to 0x5a
// (as long as you hold the magnet to it for long enough)
// before the device ID changes. The receiver unit needs
// to receive this *strongly* in order to change its
// allegiance.
binding_countdown = b[6];
else
// A depth reading of zero indicates no reading. Even with
// the sensor flat down on a table, it still reads about 13.
depth = ((b[5] & 3) << 8) | b[6];
data = data_make("time", "", DATA_STRING, time_str,
"model", "", DATA_STRING, "Oil Watchman",
"id", "", DATA_FORMAT, "%06x", DATA_INT, unit_id,
"flags", "", DATA_FORMAT, "%02x", DATA_INT, flags,
"maybetemp", "", DATA_INT, maybetemp,
"temperature_C", "", DATA_DOUBLE, temperature,
"binding_countdown", "", DATA_INT, binding_countdown,
"depth", "", DATA_INT, depth,
NULL);
data_acquired_handler(data);
events++;
}
return events;
}