1 /* Prologue sensor protocol
3 * the sensor sends 36 bits 7 times, before the first packet there is a pulse sent
4 * the packets are pwm modulated
6 * the data is grouped in 9 nibles
7 * [id0] [rid0] [rid1] [data0] [temp0] [temp1] [temp2] [humi0] [humi1]
10 * rid is a random id that is generated when the sensor starts, could include battery status
11 * the same batteries often generate the same id
12 * data(3) is 0 the battery status, 1 ok, 0 low, first reading always say low
13 * data(2) is 1 when the sensor sends a reading when pressing the button on the sensor
14 * data(1,0)+1 forms the channel number that can be set by the sensor (1-3)
15 * temp is 12 bit signed scaled by 10
16 * humi0 is always 1100,c if no humidity sensor is available
17 * humi1 is always 1100,c if no humidity sensor is available
19 * The sensor can be bought at Clas Ohlson
23 static int prologue_callback(uint8_t bb[BITBUF_ROWS][BITBUF_COLS],int16_t bits_per_row[BITBUF_ROWS]) {
28 /* FIXME validate the received message better */
29 if (((bb[1][0]&0xF0) == 0x90 && (bb[2][0]&0xF0) == 0x90 && (bb[3][0]&0xF0) == 0x90 && (bb[4][0]&0xF0) == 0x90 &&
30 (bb[5][0]&0xF0) == 0x90 && (bb[6][0]&0xF0) == 0x90) ||
31 ((bb[1][0]&0xF0) == 0x50 && (bb[2][0]&0xF0) == 0x50 && (bb[3][0]&0xF0) == 0x50 && (bb[4][0]&0xF0) == 0x50) &&
32 (bb[1][3] == bb[2][3]) && (bb[1][4] == bb[2][4])) {
35 temp2 = (int16_t)((uint16_t)(bb[1][2] << 8) | (bb[1][3]&0xF0));
37 fprintf(stderr, "Sensor temperature event:\n");
38 fprintf(stderr, "protocol = Prologue, %d bits\n",bits_per_row[1]);
39 fprintf(stderr, "button = %d\n",bb[1][1]&0x04?1:0);
40 fprintf(stderr, "battery = %s\n",bb[1][1]&0x08?"Ok":"Low");
41 fprintf(stderr, "temp = %s%d.%d\n",temp2<0?"-":"",abs((int16_t)temp2/10),abs((int16_t)temp2%10));
42 fprintf(stderr, "humidity = %d\n", ((bb[1][3]&0x0F)<<4)|(bb[1][4]>>4));
43 fprintf(stderr, "channel = %d\n",(bb[1][1]&0x03)+1);
44 fprintf(stderr, "id = %d\n",(bb[1][0]&0xF0)>>4);
45 rid = ((bb[1][0]&0x0F)<<4)|(bb[1][1]&0xF0)>>4;
46 fprintf(stderr, "rid = %d\n", rid);
47 fprintf(stderr, "hrid = %02x\n", rid);
49 fprintf(stderr, "%02x %02x %02x %02x %02x\n",bb[1][0],bb[1][1],bb[1][2],bb[1][3],bb[1][4]);
52 debug_callback(bb, bits_per_row);
61 /* .name = */ "Prologue Temperature Sensor",
62 /* .modulation = */ OOK_PWM_D,
63 /* .short_limit = */ 3500/4,
64 /* .long_limit = */ 7000/4,
65 /* .reset_limit = */ 15000/4,
66 /* .json_callback = */ &prologue_callback,