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

diff --git a/src/devices/mebus.c b/src/devices/mebus.c
new file mode 100644
index 0000000..0c4f2f3
--- /dev/null
+++ b/src/devices/mebus.c
@@ -0,0 +1,46 @@
+#include "rtl_433.h"
+
+static int mebus433_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;
+    int8_t  hum;
+
+    if (bb[0][0] == 0 && bb[1][4] !=0 && (bb[1][0] & 0b01100000) && bb[1][3]==bb[5][3] && bb[1][4] == bb[12][4]){
+	// Upper 4 bits are stored in nibble 1, lower 8 bits are stored in nibble 2
+	// upper 4 bits of nibble 1 are reserved for other usages.
+        temp = (int16_t)((uint16_t)(bb[1][1] << 12 ) | bb[1][2]<< 4);
+        temp = temp >> 4;
+	// lower 4 bits of nibble 3 and upper 4 bits of nibble 4 contains
+	// humidity as decimal value
+	hum  = (bb[1][3] << 4 | bb[1][4] >> 4);
+
+        temperature_before_dec = abs(temp / 10);
+        temperature_after_dec = abs(temp % 10);
+
+        fprintf(stdout, "SENSOR:TYPE=MEBUS,");
+        fprintf(stdout, "ID=%i,", bb[1][0] & 0b00011111);
+        fprintf(stdout, "CHANNEL=%i,",((bb[1][1] & 0b00110000) >> 4)+1);
+        fprintf(stdout, "BATTERY=%s,", bb[1][1] & 0b10000000?"OK":"LOW");
+        fprintf(stdout, "TEMPERATURE=%s%d.%d,",temp<0?"-":"",temperature_before_dec, temperature_after_dec);
+        fprintf(stdout, "HUMIDITY=%i\n", hum);
+        fprintf(stderr, "%02x %02x %02x %02x %02x\n",bb[1][0],bb[1][1],bb[1][2],bb[1][3],bb[1][4]);
+
+        if (debug_output)
+            debug_callback(bb, bits_per_row);
+
+        return 1;
+    }
+    return 0;
+}
+
+r_device mebus433 = {
+    /* .id             = */ 16,
+    /* .name           = */ "Mebus 433",
+    /* .modulation     = */ OOK_PWM_D,
+    /* .short_limit    = */ 300,
+    /* .long_limit     = */ 600,
+    /* .reset_limit    = */ 1500,
+    /* .json_callback  = */ &mebus433_callback,
+    /* .json_callback  = */ //&debug_callback,
+};