Communication LoRa

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英文:

Communication LoRa

问题

Transmitter Code (发射器代码):

  1. #include "Arduino.h"
  2. #include "LoRa_E32.h"
  4. LoRa_E32 e32ttl100(&Serial2, UART_BPS_RATE_9600);
  6. void setup() {
  7.   Serial.begin(9600);
  8.   delay(500);
  9.   // Startup all pins and UART
  10.   e32ttl100.begin();
  11.   Serial.println("Hi, I'm going to send messages every second!");
  12.   // Send first message
  13.   ResponseStatus rs = e32ttl100.sendMessage("Hello, world?");
  14.   // Check if message was sent successfully
  15.   if (rs.code == 1) {
  16.     Serial.println("Message sent successfully");
  17.   } else {
  18.     Serial.println("Failed to send message");
  19.   }
  20. }
  22. void loop() {
  23.   delay(2000);
  24.   // Send message
  25.   ResponseStatus rs = e32ttl100.sendMessage("Hello, world?");
  26.   // Check if message was sent successfully
  27.   if (rs.code == 1) {
  28.     Serial.println("Message sent successfully");
  29.   } else {
  30.     Serial.println("Failed to send message");
  31.   }
  32. }

Receiver Code (接收器代码):

  1. #include <SPI.h>
  2. #include <LoRa.h>
  4. #define ss 8
  5. #define reset 4
  6. #define dio0 7
  8. void setup() {
  9.   Serial.begin(9600);
  10.   LoRa.setPins(ss, reset, dio0);
  11.   if (!LoRa.begin(868E6)) {
  12.     Serial.println("Starting LoRa failed!");
  13.     while (1);
  14.   }
  15.   // Set signal bandwidth to 125kHz
  16.   LoRa.setSignalBandwidth(125E3);
  17.   // Set TX power to 20dBm
  18.   LoRa.setTxPower(20);
  19.   pinMode(LED_BUILTIN, OUTPUT);
  20.   digitalWrite(LED_BUILTIN, HIGH);
  21. }
  23. void loop() {
  24.   int packetSize = LoRa.parsePacket();
  25.   if (packetSize) {
  26.     // received a packet
  27.     Serial.print("Received packet with RSSI ");
  28.     Serial.print(LoRa.packetRssi());
  29.     Serial.print(": ");
  30.     while (LoRa.available()) {
  31.       Serial.write(LoRa.read());
  32.     }
  33.     digitalWrite(LED_BUILTIN, !digitalRead(LED_BUILTIN));
  34.   }
  35. }

These are the translated code sections for the transmitter and receiver. If you have any further questions or need assistance with the problem, please feel free to ask.

英文:

I have two LoRa modules, the transmitter is an E32-900T20D (with ESP32 DevKitC V4) and the receiver is a LoRa32U4. The problem is that the receiver is not receiving anything from the transmitter. Here is the code for the transmitter:

  1. #include &quot;Arduino.h&quot;
  2. #include &quot;LoRa_E32.h&quot;
  4. LoRa_E32 e32ttl100(&amp;Serial2,UART_BPS_RATE_9600 ); 
  6. void setup() {
  7.   Serial.begin(9600);
  8.   delay(500);
  9.   // Startup all pins and UART
  10.   e32ttl100.begin();
  11.   Serial.println(&quot;Hi, I&#39;m going to send messages every second!&quot;);
  12.   // Send first message
  13.   ResponseStatus rs = e32ttl100.sendMessage(&quot;Hello, world?&quot;);
  14.   // Check if message was sent successfully
  15.   if (rs.code == 1) {
  16.     Serial.println(&quot;Message sent successfully&quot;);
  17.   } else {
  18.     Serial.println(&quot;Failed to send message&quot;);
  19.   }
  20. }
  22. void loop() {
  23.   delay(2000); 
  24.   // Send message
  25.   ResponseStatus rs = e32ttl100.sendMessage(&quot;Hello, world?&quot;);
  26.   // Check if message was sent successfully
  27.   if (rs.code == 1) {
  28.     Serial.println(&quot;Message sent successfully&quot;);
  29.   } else {
  30.     Serial.println(&quot;Failed to send message&quot;);
  31.   }
  32. }

Here is the result of the transmitter:

>Hi, I'm going to send messages every second!
Message sent successfully
Message sent successfully
Message sent successfully

Here is the code for the receiver:

  1. #include &lt;SPI.h&gt;
  2. #include &lt;LoRa.h&gt;
  4. #define ss 8
  5. #define reset 4
  6. #define dio0 7
  8. void setup() {
  9.   Serial.begin(9600);
  10.   LoRa.setPins(ss, reset, dio0);
  11.   if (!LoRa.begin(868E6)) {
  12.     Serial.println(&quot;Starting LoRa failed!&quot;);
  13.     while (1);
  14.   }
  15.   // Set signal bandwidth to 125kHz
  16.   LoRa.setSignalBandwidth(125E3);
  17.   // Set TX power to 20dBm
  18.   LoRa.setTxPower(20);
  19.   pinMode(LED_BUILTIN, OUTPUT);
  20.   digitalWrite(LED_BUILTIN, HIGH);
  21. }
  23. void loop() {
  24.   int packetSize = LoRa.parsePacket();
  25.   if (packetSize) {
  26.     // received a packet
  27.     Serial.print(&quot;Received packet with RSSI &quot;);
  28.     Serial.print(LoRa.packetRssi());
  29.     Serial.print(&quot;: &quot;);
  30.     while (LoRa.available()) {
  31.       Serial.write(LoRa.read());
  32.     }
  33.     digitalWrite(LED_BUILTIN, !digitalRead(LED_BUILTIN));
  34.   }
  35. }

Knowing that both are configured for 868 Mhz, what is the problem? Any help please?

答案1

得分: 2

Ebyte模块，如果由UART管理，实际上不是LoRa设备。它们的设置与常规LoRa模块不匹配。我一直怀疑它们使用FSK传输而不是LoRa。要么完全使用Ebyte生态系统，要么不用。不要混合非Ebyte和Ebyte模块，因为如果这样做，你只会确保带来困扰。

英文:

Ebyte modules that are UART-managed are not really LoRa devices. Their settings do not match that of regular LoRa modules. I have long suspected that they use FSK transmission instead of LoRa. Stay entirely within the Ebyte ecosystem, or out. Do not mix non-Ebyte and Ebyte modules, because if you do, all you will ensure is misery.

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  • 本文由 发表于 2023年4月19日 17:54:29
  • 转载请务必保留本文链接：https://go.coder-hub.com/76053132.html
  • communication
  • lora
  • module
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