E220-900T22D Data Size not match!

[Giuseppe]

Hi Renzo first of all thanks for you excellent and hard work.
i am having problems with a esp32 and a E220-900T22D, i get this serial outoput when i run your example “get configuration”(first screenshot) and when i run the set parameters i get the second screenshot.

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[Renzo Mischianti]

Hi Giuseppe,
Data size not matching can be caused by wrong M0 M1 wiring or low power supply.
Bye Renzo

[simone]

Hi, I have the same problem. Data size does not match! I think the wiring is correct

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[simone]

i miei componenti sono
LoRa 868 MHz 915 MHz LLCC68 Modulo wireless 22 dBm Lungo raggio 5 km CDEBYTE E220-900T22D SMA-K UART RSSI Trasmettitore Ricevitore DIP
e
RP2040
sto usando la libreia E220
ed ho modificato il codice LoRa_E220 e220ttl(&Serial2, 1, 10, 11); // RX AUX M0 M1 perche rp e diverso da quello originale

• This reply was modified 3 weeks, 1 day ago by simone.

[simone]

/*
* LoRa E220
* Get configuration.
* You must uncommend the correct constructor.
*
* by Renzo Mischianti <https://www.mischianti.org&gt;
*
* https://www.mischianti.org
*
* E220 —– WeMos D1 mini —– esp32 —– Arduino Nano 33 IoT —– Arduino MKR —– Raspberry Pi Pico —– stm32 —– ArduinoUNO
* M0 —– D7 (or 3.3v) —– 19 (or 3.3v) —– 4 (or 3.3v) —– 2 (or 3.3v) —– 10 (or 3.3v) —– PB0 (or 3.3v) —– 7 Volt div (or 3.3v)
* M1 —– D6 (or 3.3v) —– 21 (or 3.3v) —– 6 (or 3.3v) —– 4 (or 3.3v) —– 11 (or 3.3v) —– PB10 (or 3.3v) —– 6 Volt div (or 3.3v)
* TX —– D3 (PullUP) —– TX2 (PullUP) —– TX1 (PullUP) —– 14 (PullUP) —– 7 (PullUP) —– PA2 TX2 (PullUP) —– 4 (PullUP)
* RX —– D4 (PullUP) —– RX2 (PullUP) —– RX1 (PullUP) —– 13 (PullUP) —– 8 (PullUP) —– PA3 RX2 (PullUP) —– 5 Volt div (PullUP)
* AUX —– D5 (PullUP) —– 18 (PullUP) —– 2 (PullUP) —– 0 (PullUP) —– 2 (PullUP) —– PA0 (PullUP) —– 3 (PullUP)
* VCC —– 3.3v/5v —– 3.3v/5v —– 3.3v/5v —– 3.3v/5v —– 3.3v/5v —– 3.3v/5v —– 3.3v/5v
* GND —– GND —– GND —– GND —– GND —– GND —– GND —– GND
*
*/

#include “Arduino.h”
#include “LoRa_E220.h”

// ———- esp8266 pins ————–
//LoRa_E220 e220ttl(RX, TX, AUX, M0, M1); // Arduino RX <– e220 TX, Arduino TX –> e220 RX
//LoRa_E220 e220ttl(D3, D4, D5, D7, D6); // Arduino RX <– e220 TX, Arduino TX –> e220 RX AUX M0 M1
//LoRa_E220 e220ttl(D2, D3); // Config without connect AUX and M0 M1

//#include <SoftwareSerial.h>
//SoftwareSerial mySerial(D2, D3); // Arduino RX <– e220 TX, Arduino TX –> e220 RX
//LoRa_E220 e220ttl(&mySerial, D5, D7, D6); // AUX M0 M1
// ————————————-

// ———- Arduino pins ————–
//LoRa_E220 e220ttl(4, 5, 3, 7, 6); // Arduino RX <– e220 TX, Arduino TX –> e220 RX AUX M0 M1
//LoRa_E220 e220ttl(4, 5); // Config without connect AUX and M0 M1

//#include <SoftwareSerial.h>
//SoftwareSerial mySerial(4, 5); // Arduino RX <– e220 TX, Arduino TX –> e220 RX
//LoRa_E220 e220ttl(&mySerial, 3, 7, 6); // AUX M0 M1
// ————————————-

// ————- Arduino Nano 33 IoT ————-
// LoRa_E220 e220ttl(&Serial1, 2, 4, 6); // RX AUX M0 M1
// ————————————————-

// ————- Arduino MKR WiFi 1010 ————-
// LoRa_E220 e220ttl(&Serial1, 0, 2, 4); // RX AUX M0 M1
// ————————————————-

// ———- esp32 pins ————–
// LoRa_E220 e220ttl(&Serial2, 15, 21, 19); // RX AUX M0 M1

//LoRa_E220 e220ttl(&Serial2, 22, 4, 18, 21, 19, UART_BPS_RATE_9600); // esp32 RX <– e220 TX, esp32 TX –> e220 RX AUX M0 M1
// ————————————-

// ———- Raspberry PI Pico pins ————–
LoRa_E220 e220ttl(&Serial2, 1, 10, 11); // RX AUX M0 M1
// ————————————-

// —————- STM32 ——————–
//HardwareSerial Serial2(USART2); // PA3 (RX) PA2 (TX)
//LoRa_E220 e220ttl(&Serial2, PA0, PB0, PB10); // RX AUX M0 M1
// ————————————————-

[Giuseppe]

Thanks Renzo, it work but know i am getting this “Save mode returned not recognized!” in the example “set configuration”, what could be cousing that problem?

[Renzo Mischianti]

Hi,
try to put 5v on power and 3.3v on logic level.
Bye Renzo

[Renzo Mischianti]

Hi,
about this issue here you can find a possible solution
https://github.com/xreef/EByte_LoRa_E220_Series_Library/pull/11
It’s seems that there is an issue with software serial, but it’s very strange.
Even if the message say that the module working.
Bye Renzo

[JamieSue]

Thanks for the info.

[Author]

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