X-Git-Url: https://git.rvb.name/rtl-433.git/blobdiff_plain/7771049ddd733b759484442a3b10ade8faea75ff..337eb4ba945097205fbb6a3ca7912fb0697092d1:/src/devices/rubicson.c

diff --git a/src/devices/rubicson.c b/src/devices/rubicson.c
new file mode 100644
index 0000000..f58a213
--- /dev/null
+++ b/src/devices/rubicson.c
@@ -0,0 +1,58 @@
+#include "rtl_433.h"
+
+/* Currently this can decode the temperature and id from Rubicson sensors
+ *
+ * the sensor sends 36 bits 12 times pwm modulated
+ * the data is grouped into 9 nibles
+ * [id0] [id1], [unk0] [temp0], [temp1] [temp2], [unk1] [unk2], [unk3]
+ *
+ * The id changes when the battery is changed in the sensor.
+ * unk0 is always 1 0 0 0, most likely 2 channel bits as the sensor can recevice 3 channels
+ * unk1-3 changes and the meaning is unknown
+ * temp is 12 bit signed scaled by 10
+ *
+ * The sensor can be bought at Kjell&Co
+ */
+
+static int rubicson_callback(uint8_t bb[BITBUF_ROWS][BITBUF_COLS],int16_t bits_per_row[BITBUF_ROWS]) {
+    int temperature_before_dec;
+    int temperature_after_dec;
+    int16_t temp;
+
+    /* FIXME validate the received message better, figure out crc */
+    if (bb[1][0] == bb[2][0] && bb[2][0] == bb[3][0] && bb[3][0] == bb[4][0] &&
+        bb[4][0] == bb[5][0] && bb[5][0] == bb[6][0] && bb[6][0] == bb[7][0] && bb[7][0] == bb[8][0] &&
+        bb[8][0] == bb[9][0] && (bb[5][0] != 0 && bb[5][1] != 0 && bb[5][2] != 0)) {
+
+        /* Nible 3,4,5 contains 12 bits of temperature
+         * The temerature is signed and scaled by 10 */
+        temp = (int16_t)((uint16_t)(bb[0][1] << 12) | (bb[0][2] << 4));
+        temp = temp >> 4;
+
+        temperature_before_dec = abs(temp / 10);
+        temperature_after_dec = abs(temp % 10);
+
+        fprintf(stdout, "SENSOR:TYPE=RUBICSON,");
+        fprintf(stdout, "ID=%x,",bb[0][0]);
+        fprintf(stdout, "TEMPERATURE=%s%d.%d\n",temp<0?"-":"",temperature_before_dec, temperature_after_dec);
+        fprintf(stderr, "%02x %02x %02x %02x %02x\n",bb[1][0],bb[0][1],bb[0][2],bb[0][3],bb[0][4]);
+
+        if (debug_output)
+            debug_callback(bb, bits_per_row);
+
+        return 1;
+    }
+    return 0;
+}
+
+// timings based on samp_rate=1024000
+r_device rubicson = {
+    /* .id             = */ 1,
+    /* .name           = */ "Rubicson Temperature Sensor",
+    /* .modulation     = */ OOK_PWM_D,
+    /* .short_limit    = */ 1744/4,
+    /* .long_limit     = */ 3500/4,
+    /* .reset_limit    = */ 5000/4,
+    /* .json_callback  = */ &rubicson_callback,
+};
+