Diff: sensorDemoVT100.cpp

Revision:

4:72b8fdc9878e

Parent:

3:fc23bbc14475

Child:

5:53cd6c24a4ab

--- a/sensorDemoVT100.cpp	Mon Mar 19 14:46:37 2018 -0700
+++ b/sensorDemoVT100.cpp	Thu Mar 29 14:57:14 2018 -0700
@@ -41,7 +41,7 @@
 /*!
  * LoRaWAN confirmed messages
  */
-#define LORAWAN_CONFIRMED_MSG_ON                    true
+#define LORAWAN_CONFIRMED_MSG_ON                    false
 
 /*!
  * LoRaWAN Adaptive Data Rate
@@ -271,12 +271,14 @@
 #define CAYENNE_CH_AOUT     3
 #define CAYENNE_CH_TEMP     0
 #define CAYENNE_CH_POT      1
+#define CAYENNE_CH_DIN      4
 
 AnalogIn a1(A1);
 AnalogIn a3(A3);
 
 const unsigned R0 = 100000;
 const unsigned B = 4275;
+volatile bool dout_downlink;
 
 /*!
  * \brief   Prepares the payload of the frame
@@ -285,6 +287,7 @@
 {
     uint16_t u16, rot;
     float t, f, R;
+    static uint8_t seq;
 
     if (c_ch != 0xff) {
         gAppDataSize = 0;
@@ -367,9 +370,17 @@
             AppData[gAppDataSize++] = rot >> 8;
             AppData[gAppDataSize++] = rot;
 
-            AppData[gAppDataSize++] = CAYENNE_CH_DOUT;
-            AppData[gAppDataSize++] = LPP_DIGITAL_OUTPUT;
-            AppData[gAppDataSize++] = extLed.read();
+            /* limited packet size: either ack downlink, or send sequence number */
+            if (dout_downlink) {
+                AppData[gAppDataSize++] = CAYENNE_CH_DOUT;
+                AppData[gAppDataSize++] = LPP_DIGITAL_OUTPUT;
+                AppData[gAppDataSize++] = extLed.read();
+                dout_downlink = false;
+            } else {
+                AppData[gAppDataSize++] = CAYENNE_CH_DIN;
+                AppData[gAppDataSize++] = LPP_DIGITAL_INPUT;
+                AppData[gAppDataSize++] = seq++;
+            }
             break;
         case 224:
             if( ComplianceTest.LinkCheck == true ) {
@@ -583,6 +594,7 @@
             switch (mcpsIndication->Buffer[n]) {
                 case CAYENNE_CH_DOUT:
                     extLed.write(val);
+                    dout_downlink = true;
                     break;
                 case CAYENNE_CH_AOUT:
                     pwm.write(val / 100.0);
@@ -1071,6 +1083,9 @@
     jumper_out = 1;
     jumper_in.mode(PullDown);
     jumper_in.rise(jumper_callback);
+    // Q: does InterruptIn.rise() call immediately if already high?
+    if (jumper_in.read())
+        jumper_callback(); // A: probably not
 #endif /* JUMPER_ENABLE */
 
     while( 1 )