[LR11x0] LR-FHSS reception is not supported

jgromes · Sep 22, 2024 · 07bcf38 · 07bcf38
1 parent 0f6e765
commit 07bcf38
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Showing 2 changed files with 6 additions and 30 deletions.
diff --git a/examples/LR11x0/LR11x0_LR_FHSS_Modem/LR11x0_LR_FHSS_Modem.ino b/examples/LR11x0/LR11x0_LR_FHSS_Modem/LR11x0_LR_FHSS_Modem.ino
@@ -2,6 +2,7 @@
   RadioLib LR11x0 LR-FHSS Modem Example
 
   This example shows how to use LR-FHSS modem in LR11x0 chips.
+  This modem can only transmit data, and is not able to receive.
 
   NOTE: The sketch below is just a guide on how to use
         LR-FHSS modem, so this code should not be run directly!
@@ -68,9 +69,7 @@ void setup() {
 }
 
 void loop() {
-  // LR-FHSS modem can use the same transmit/receive methods
-  // as the LoRa modem, even their interrupt-driven versions
-
+  // LR-FHSS modem can only transmit!
   // transmit LR-FHSS packet
   int state = radio.transmit("Hello World!");
   /*
@@ -89,22 +88,4 @@ void loop() {
     Serial.println(state);
   }
 
-  // receive LR-FHSS packet
-  String str;
-  state = radio.receive(str);
-  /*
-    byte byteArr[8];
-    int state = radio.receive(byteArr, 8);
-  */
-  if (state == RADIOLIB_ERR_NONE) {
-    Serial.println(F("[LR1110] Received packet!"));
-    Serial.print(F("[LR1110] Data:\t"));
-    Serial.println(str);
-  } else if (state == RADIOLIB_ERR_RX_TIMEOUT) {
-    Serial.println(F("[LR1110] Timed out while waiting for packet!"));
-  } else {
-    Serial.print(F("[LR1110] Failed to receive packet, code "));
-    Serial.println(state);
-  }
-
 }
diff --git a/src/modules/LR11x0/LR11x0.cpp b/src/modules/LR11x0/LR11x0.cpp
@@ -216,11 +216,8 @@ int16_t LR11x0::receive(uint8_t* data, size_t len) {
     timeout = (RadioLibTime_t)(((maxLen * 8.0) / brBps) * 1000.0 * 5.0);
 
   } else if(modem == RADIOLIB_LR11X0_PACKET_TYPE_LR_FHSS) {
-    size_t maxLen = len;
-    if(len == 0) { 
-      maxLen = 0xFF;
-    }
-    timeout = (RadioLibTime_t)(((maxLen * 8.0) / (RADIOLIB_LR11X0_LR_FHSS_BIT_RATE)) * 1000.0 * 5.0);
+    // this modem cannot receive
+    return(RADIOLIB_ERR_WRONG_MODEM);
 
   } else {
     return(RADIOLIB_ERR_UNKNOWN);
@@ -472,8 +469,7 @@ int16_t LR11x0::startReceive(uint32_t timeout, uint32_t irqFlags, uint32_t irqMa
   state = getPacketType(&modem);
   RADIOLIB_ASSERT(state);
   if((modem != RADIOLIB_LR11X0_PACKET_TYPE_LORA) && 
-     (modem != RADIOLIB_LR11X0_PACKET_TYPE_GFSK) &&
-     (modem != RADIOLIB_LR11X0_PACKET_TYPE_LR_FHSS)) {
+     (modem != RADIOLIB_LR11X0_PACKET_TYPE_GFSK)) {
     return(RADIOLIB_ERR_WRONG_MODEM);
   }
 
@@ -521,8 +517,7 @@ int16_t LR11x0::readData(uint8_t* data, size_t len) {
   state = getPacketType(&modem);
   RADIOLIB_ASSERT(state);
   if((modem != RADIOLIB_LR11X0_PACKET_TYPE_LORA) && 
-     (modem != RADIOLIB_LR11X0_PACKET_TYPE_GFSK) &&
-     (modem != RADIOLIB_LR11X0_PACKET_TYPE_LR_FHSS)) {
+     (modem != RADIOLIB_LR11X0_PACKET_TYPE_GFSK)) {
     return(RADIOLIB_ERR_WRONG_MODEM);
   }