close #23

README.md

@@ -47,6 +47,14 @@ Total length of `RC_DATA` payload is 9 bytes
 | 3     | RX supply volatage, sent in 0,1V      |
 | 4     | RX analog input 1 sent in 0,1V        |
 | 5     | RX analog input 2 sent in 0,1V        |
+| 6     | Flags                                 |
+
+#### Flags
+
+| Bit   | Meaning                               |
+| ----  | ----                                  |
+| 00000001  | Device in Failsafe mode           |
+
 
 ### `PING` and `PONG` frames
 

crossbow.ino

@@ -1,7 +1,7 @@
 #define LORA_HARDWARE_SPI
 
-// #define DEVICE_MODE_TX
+#define DEVICE_MODE_TX
-#define DEVICE_MODE_RX
+// #define DEVICE_MODE_RX
 
 #define FEATURE_TX_OLED
 

qsp.cpp

@@ -61,6 +61,14 @@ void encodeRxHealthPayload(QspConfiguration_t *qsp, RxDeviceState_t *rxDeviceSta
     qsp->payload[3] = rxDeviceState->a1Voltage;
     qsp->payload[4] = rxDeviceState->a2Voltage;
 
+    uint8_t flags = 0;
+
+    if (qsp->deviceState == DEVICE_STATE_FAILSAFE) {
+        flags |= 0x01 << 0;
+    }
+
+    qsp->payload[5] = flags;
+
     qsp->payloadLength = 6;
 }
 
@@ -70,6 +78,7 @@ void decodeRxHealthPayload(QspConfiguration_t *qsp, RxDeviceState_t *rxDeviceSta
     rxDeviceState->rxVoltage = qsp->payload[2];
     rxDeviceState->a1Voltage = qsp->payload[3];
     rxDeviceState->a2Voltage = qsp->payload[4];
+    rxDeviceState->flags = qsp->payload[5];
 }
 
 /**

variables.h

@@ -89,4 +89,5 @@ struct RxDeviceState_t {
     uint8_t a1Voltage = 0;
     uint8_t a2Voltage = 0;
     uint32_t roundtrip = 0;
+    uint8_t flags = 0;
 };