bugfix message queuing to LMIC while LMIC is busy

include/globals.h

@@ -45,6 +45,9 @@
 #define I2C_MUTEX_LOCK() (xSemaphoreTake(I2Caccess, pdMS_TO_TICKS(10)) == pdTRUE)
 #define I2C_MUTEX_UNLOCK() (xSemaphoreGive(I2Caccess))
 
+enum sendprio_t { prio_low, prio_normal, prio_high };
+enum timesource_t { _gps, _rtc, _lora, _unsynced };
+
 // Struct holding devices's runtime configuration
 typedef struct {
   uint8_t lorasf;      // 7-12, lora spreadfactor
@@ -73,6 +76,7 @@ typedef struct {
 typedef struct {
   uint8_t MessageSize;
   uint8_t MessagePort;
+  sendprio_t MessagePrio;
   uint8_t Message[PAYLOAD_BUFFER_SIZE];
 } MessageBuffer_t;
 
@@ -95,9 +99,6 @@ typedef struct {
   float gas;             // raw gas sensor signal
 } bmeStatus_t;
 
-enum sendprio_t { prio_low, prio_normal, prio_high };
-enum timesource_t { _gps, _rtc, _lora, _unsynced };
-
 extern std::set<uint16_t, std::less<uint16_t>, Mallocator<uint16_t>> macs;
 extern std::array<uint64_t, 0xff>::iterator it;
 extern std::array<uint64_t, 0xff> beacons;

include/lorawan.h

@@ -35,7 +35,7 @@ void os_getDevEui(u1_t *buf);
 void showLoraKeys(void);
 void switch_lora(uint8_t sf, uint8_t tx);
 void lora_send(osjob_t *job);
-void lora_enqueuedata(MessageBuffer_t *message, sendprio_t prio);
+void lora_enqueuedata(MessageBuffer_t *message);
 void lora_queuereset(void);
 #if (TIME_SYNC_LORAWAN)
 void user_request_network_time_callback(void *pVoidUserUTCTime,

include/spislave.h

@@ -28,7 +28,7 @@ licenses. Refer to LICENSE.txt file in repository for more details.
 
 esp_err_t spi_init();
 
-void spi_enqueuedata(MessageBuffer_t *message, sendprio_t prio);
+void spi_enqueuedata(MessageBuffer_t *message);
 void spi_queuereset();
 
 #endif // _SPISLAVE_H

src/lorawan.cpp

@@ -391,21 +391,16 @@ void switch_lora(uint8_t sf, uint8_t tx) {
 
 void lora_send(osjob_t *job) {
   MessageBuffer_t SendBuffer;
-  // Check if there is a pending TX/RX job running, if yes don't eat data
-  // since it cannot be sent right now
-  if ((LMIC.opmode & (OP_JOINING | OP_REJOIN | OP_TXDATA | OP_POLL)) != 0) {
-    // waiting for LoRa getting ready
-  } else {
-    if (xQueueReceive(LoraSendQueue, &SendBuffer, (TickType_t)0) == pdTRUE) {
-      // SendBuffer now filled with next payload from queue
-      if (!LMIC_setTxData2(SendBuffer.MessagePort, SendBuffer.Message,
-                           SendBuffer.MessageSize, (cfg.countermode & 0x02))) {
-        ESP_LOGI(TAG, "%d byte(s) sent to LoRa", SendBuffer.MessageSize);
-      } else {
-        ESP_LOGE(TAG, "could not send %d byte(s) to LoRa",
-                 SendBuffer.MessageSize);
-      }
-      // sprintf(display_line7, "PACKET QUEUED");
+  if (xQueueReceive(LoraSendQueue, &SendBuffer, (TickType_t)0) == pdTRUE) {
+    // SendBuffer now filled with next payload from queue
+    if (LMIC_setTxData2(SendBuffer.MessagePort, SendBuffer.Message,
+                        SendBuffer.MessageSize,
+                        (cfg.countermode & 0x02)) == 0) {
+      ESP_LOGI(TAG, "%d byte(s) sent to LoRa", SendBuffer.MessageSize);
+    } else {
+      lora_enqueuedata(&SendBuffer);
+      // ESP_LOGE(TAG, "could not send %d byte(s) to LoRa, rescheduled",
+      //         SendBuffer.MessageSize);
     }
   }
   // reschedule job every 0,5 - 1 sec. including a bit of random to prevent
@@ -441,10 +436,12 @@ esp_err_t lora_stack_init() {
   return ESP_OK; // continue main program
 }
 
-void lora_enqueuedata(MessageBuffer_t *message, sendprio_t prio) {
+void lora_enqueuedata(MessageBuffer_t *message) {
   // enqueue message in LORA send queue
   BaseType_t ret;
   MessageBuffer_t DummyBuffer;
+  sendprio_t prio = message->MessagePrio;
+
   switch (prio) {
   case prio_high:
     // clear space in queue if full, then fallthrough to normal

src/senddata.cpp

@@ -10,9 +10,11 @@ void sendcycle() {
 // put data to send in RTos Queues used for transmit over channels Lora and SPI
 void SendPayload(uint8_t port, sendprio_t prio) {
 
-  MessageBuffer_t SendBuffer; // contains MessageSize, MessagePort, Message[]
+  MessageBuffer_t SendBuffer; // contains MessageSize, MessagePort, MessagePrio, Message[]
 
   SendBuffer.MessageSize = payload.getSize();
+  SendBuffer.MessagePrio = prio;
+
   switch (PAYLOAD_ENCODER) {
   case 1: // plain -> no mapping
   case 2: // packed -> no mapping
@@ -42,10 +44,10 @@ void SendPayload(uint8_t port, sendprio_t prio) {
 
 // enqueue message in device's send queues
 #if (HAS_LORA)
-  lora_enqueuedata(&SendBuffer, prio);
+  lora_enqueuedata(&SendBuffer);
 #endif
 #ifdef HAS_SPI
-  spi_enqueuedata(&SendBuffer, prio);
+  spi_enqueuedata(&SendBuffer);
 #endif
 
 } // SendPayload

src/spislave.cpp

@@ -147,10 +147,12 @@ esp_err_t spi_init() {
   return ret;
 }
 
-void spi_enqueuedata(MessageBuffer_t *message, sendprio_t prio) {
+void spi_enqueuedata(MessageBuffer_t *message) {
   // enqueue message in SPI send queue
   BaseType_t ret;
   MessageBuffer_t DummyBuffer;
+  sendprio_t prio = message->MessagePrio;
+
   switch (prio) {
   case prio_high:
     // clear space in queue if full, then fallthrough to normal