Using E32-433T33D full power (33dBm)

[Nuno-Miguel]

Hello. I am starting to use Renzo’s library with two E32 LoRa modules and two Arduinos. So far thing are going well thanks to Renzo Mischianti tutorials and library (both great). I am using transparent transmission and 0.3kbps airdate rate, hoping to reach 10 km transmission distance (at continuous operation). To achieve this I am using an E32-433T33D as permanent TRANSMISSOR (maximum power 33dBm) and an E32-433T20D (maximum power 20dBm) as permanent RECEIVER. I am powering the E32-433T20D from Arduino 5V pin, and using an external 5V power supply able to provide 2.4A to the E32-433T33D. Both LoRa modules were connect using the proposed “LoRa E32 TTL 100 Arduino fully connected” schematic given by Renzo at tutorial number 2. I was able to put both LoRa modules communications using the examples given by Renzo! :)

In this context, I have two questions I would like to place. Please attend that my knowledge of Arduino is low, so forgive me if they are dummy.

1. I am unable to use the full power of the E32-433T33D… Using #define E32_TTL_1W I am using 30dbm (I think), but how can I use the full 33dBm of the LoRa module?
2. Can the code be more efficient? What should I change to make continuous transparent transmission more efficient?

Regards Nuno

RECEIVER CODE:

`// LoRa Module: E32-433T20D // M0: PIN D6, 3.3v (ON) to set configuration, 0.0v (OFF) to comunicate. // M1: Pin D5, 3.3v (ON) to set configuration, 0.0v (OFF) to comunicate. // TX: PIN D2 // RX: PIN D3 // AUX: Not used. // VCC: 5v (external power supply must make sure the current output ability is more than 250mA and ensure the power supply ripple within 100mV) // GND: GND

define E32_TTL_100 // Module LoRa: E32-433T20D

include "Arduino.h"

include "LoRa_E32.h"

LoRa_E32 e32ttl100(2, 3); void printParameters(struct Configuration configuration); void printModuleInformation(struct ModuleInformation moduleInformation);

void setup() {

pinMode(6, OUTPUT); // M0 pinMode(5, OUTPUT); // M1 digitalWrite(6, HIGH); // M0 = 3.3V digitalWrite(5, HIGH); // M1 = 3.3V

Serial.begin(115200); delay(500);

e32ttl100.begin();

ResponseStructContainer c;
c = e32ttl100.getConfiguration();
Configuration configuration = *(Configuration*) c.data;
Serial.println(c.status.getResponseDescription());
Serial.println(c.status.code);

// LoRa module configuration. printParameters(configuration); configuration.ADDL = 0x0; configuration.ADDH = 0x1; configuration.CHAN = 0x17; configuration.OPTION.fec = FEC_1_ON; configuration.OPTION.fixedTransmission = FT_TRANSPARENT_TRANSMISSION; configuration.OPTION.ioDriveMode = IO_D_MODE_PUSH_PULLS_PULL_UPS; configuration.OPTION.transmissionPower = POWER_20; configuration.OPTION.wirelessWakeupTime = WAKE_UP_250; configuration.SPED.airDataRate = AIR_DATA_RATE_000_03; configuration.SPED.uartBaudRate = UART_BPS_9600; configuration.SPED.uartParity = MODE_00_8N1;

ResponseStatus rs = e32ttl100.setConfiguration(configuration, WRITE_CFG_PWR_DWN_LOSE);
Serial.println(rs.getResponseDescription());
Serial.println(rs.code);
printParameters(configuration);
c.close();

}

void loop() {

digitalWrite(6, LOW); // M0 = 0.0V digitalWrite(5, LOW); // M1 = 0.0V

if (e32ttl100.available()>1) { // Check if a string message is available. ResponseContainer rc = e32ttl100.receiveMessage(); // Read the string message. if (rc.status.code!=1) { // Is something goes wrong, print error. rc.status.getResponseDescription(); } else { // Message received. Serial.println(rc.data); } }

delay(10);

}

void printParameters(struct Configuration configuration) {

Serial.println("----------------------------------------");
Serial.print(F("HEAD : "));  Serial.print(configuration.HEAD, BIN);Serial.print(" ");Serial.print(configuration.HEAD, DEC);Serial.print(" ");Serial.println(configuration.HEAD, HEX);
Serial.println(F(" "));
Serial.print(F("AddH : "));  Serial.println(configuration.ADDH, BIN);
Serial.print(F("AddL : "));  Serial.println(configuration.ADDL, BIN);
Serial.print(F("Chan : "));  Serial.print(configuration.CHAN, DEC); Serial.print(" -> "); Serial.println(configuration.getChannelDescription());
Serial.println(F(" "));
Serial.print(F("SpeedParityBit     : "));  Serial.print(configuration.SPED.uartParity, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getUARTParityDescription());
Serial.print(F("SpeedUARTDatte  : "));  Serial.print(configuration.SPED.uartBaudRate, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getUARTBaudRate());
Serial.print(F("SpeedAirDataRate   : "));  Serial.print(configuration.SPED.airDataRate, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getAirDataRate());

Serial.print(F("OptionTrans        : "));  Serial.print(configuration.OPTION.fixedTransmission, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getFixedTransmissionDescription());
Serial.print(F("OptionPullup       : "));  Serial.print(configuration.OPTION.ioDriveMode, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getIODroveModeDescription());
Serial.print(F("OptionWakeup       : "));  Serial.print(configuration.OPTION.wirelessWakeupTime, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getWirelessWakeUPTimeDescription());
Serial.print(F("OptionFEC          : "));  Serial.print(configuration.OPTION.fec, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getFECDescription());
Serial.print(F("OptionPower        : "));  Serial.print(configuration.OPTION.transmissionPower, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getTransmissionPowerDescription());
Serial.println("----------------------------------------");

}`

TRANSMITTER CODE:

`// LoRa Module: E32-433T20D // M0: PIN D6, 3.3v (ON) to set configuration, 0.0v (OFF) to comunicate. // M1: Pin D5, 3.3v (ON) to set configuration, 0.0v (OFF) to comunicate. // TX: PIN D2 // RX: PIN D3 // AUX: Not used. // VCC: 5v (external power supply must make sure the current output ability is more than 250mA and ensure the power supply ripple within 100mV) // GND: GND

define E32_TTL_1W // Module LoRa: E32-433T33D

include "Arduino.h"

include "LoRa_E32.h"

LoRa_E32 e32ttl100(2, 3); void printParameters(struct Configuration configuration); void printModuleInformation(struct ModuleInformation moduleInformation);

void setup() {

pinMode(6, OUTPUT); // M0 pinMode(5, OUTPUT); // M1 digitalWrite(6, HIGH); // M0 = 3.3V digitalWrite(5, HIGH); // M1 = 3.3V

Serial.begin(115200); delay(500);

e32ttl100.begin();

ResponseStructContainer c;
c = e32ttl100.getConfiguration();
Configuration configuration = *(Configuration*) c.data;
Serial.println(c.status.getResponseDescription());
Serial.println(c.status.code);

// LoRa module configuration. printParameters(configuration); configuration.ADDL = 0x0; configuration.ADDH = 0x1; configuration.CHAN = 0x17; configuration.OPTION.fec = FEC_1_ON; configuration.OPTION.fixedTransmission = FT_TRANSPARENT_TRANSMISSION; configuration.OPTION.ioDriveMode = IO_D_MODE_PUSH_PULLS_PULL_UPS; configuration.OPTION.transmissionPower = POWER_30; configuration.OPTION.wirelessWakeupTime = WAKE_UP_250; configuration.SPED.airDataRate = AIR_DATA_RATE_000_03; configuration.SPED.uartBaudRate = UART_BPS_9600; configuration.SPED.uartParity = MODE_00_8N1;

ResponseStatus rs = e32ttl100.setConfiguration(configuration, WRITE_CFG_PWR_DWN_LOSE);
Serial.println(rs.getResponseDescription());
Serial.println(rs.code);
printParameters(configuration);
c.close();

}

void loop() {

digitalWrite(6, LOW); // M0 = 0.0V digitalWrite(5, LOW); // M1 = 0.0V

if (Serial.available()) { String input = Serial.readString(); // Message send. e32ttl100.sendMessage(input); }

delay(10);

}

void printParameters(struct Configuration configuration) {

Serial.println("----------------------------------------");
Serial.print(F("HEAD : "));  Serial.print(configuration.HEAD, BIN);Serial.print(" ");Serial.print(configuration.HEAD, DEC);Serial.print(" ");Serial.println(configuration.HEAD, HEX);
Serial.println(F(" "));
Serial.print(F("AddH : "));  Serial.println(configuration.ADDH, BIN);
Serial.print(F("AddL : "));  Serial.println(configuration.ADDL, BIN);
Serial.print(F("Chan : "));  Serial.print(configuration.CHAN, DEC); Serial.print(" -> "); Serial.println(configuration.getChannelDescription());
Serial.println(F(" "));
Serial.print(F("SpeedParityBit     : "));  Serial.print(configuration.SPED.uartParity, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getUARTParityDescription());
Serial.print(F("SpeedUARTDatte  : "));  Serial.print(configuration.SPED.uartBaudRate, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getUARTBaudRate());
Serial.print(F("SpeedAirDataRate   : "));  Serial.print(configuration.SPED.airDataRate, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getAirDataRate());

Serial.print(F("OptionTrans        : "));  Serial.print(configuration.OPTION.fixedTransmission, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getFixedTransmissionDescription());
Serial.print(F("OptionPullup       : "));  Serial.print(configuration.OPTION.ioDriveMode, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getIODroveModeDescription());
Serial.print(F("OptionWakeup       : "));  Serial.print(configuration.OPTION.wirelessWakeupTime, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getWirelessWakeUPTimeDescription());
Serial.print(F("OptionFEC          : "));  Serial.print(configuration.OPTION.fec, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getFECDescription());
Serial.print(F("OptionPower        : "));  Serial.print(configuration.OPTION.transmissionPower, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getTransmissionPowerDescription());
Serial.println("----------------------------------------");

}`

[SurenBono]

... why did you not set parameters of the module with the . exe and just run simpler code and only 4 wire on the module?..

[xreef]

Hi, the 33 is managed by E32_TTL_2W define. For the transparent transmission you must consider that you can't send a packet size major than the size configured, so pay attention when streaming the data. Bye Renzo

[SurenBono]

... Maximum tx/rx buffer on Arduino is 64 bytes.. I assume e32 is around 58 bytes.. but I'm using less than those.. example: char Transmit [] = "Wednesday,23.12.23,AM 10:45:34,U+8," // 33 bytes average

.. but I'm concerned of its durability ,can It transmit decoded GPS every seconds for at least 5 years ... last time I tested it on hc-12 .. it broke down after a few days of continues transmission.. not sure what went wrong... is it limited by it's duty cycle?... so far my Gps neo-6m on led matrix did not have this problem.. its still running smoothly after 3 year at least ... kudos for that at least..

On Fri, Nov 17, 2023, 7:25 PM Renzo Mischianti @.***> wrote:

Closed #55 https://github.com/xreef/LoRa_E32_Series_Library/issues/55 as completed.

— Reply to this email directly, view it on GitHub https://github.com/xreef/LoRa_E32_Series_Library/issues/55#event-10993008901, or unsubscribe https://github.com/notifications/unsubscribe-auth/AK2KU55ODJPTDAFNAUEYI6LYE5CRHAVCNFSM6AAAAAA3IT5GWOVHI2DSMVQWIX3LMV45UABCJFZXG5LFIV3GK3TUJZXXI2LGNFRWC5DJN5XDWMJQHE4TGMBQHA4TAMI . You are receiving this because you commented.Message ID: @.*** com>

[xreef]

Hi, I think that It could broken if there was a memory leak. Try to check It. Bye Renzo

[SurenBono]

... I tried 5 PCs (hc-12)of it.. same results after a few days... something limiting the tx frequency... probably it's duty cycle.. or memory fragmentation problem .. or something else.. I'm not sure... I cant update it's firmware either.. it's complicated process

On Sat, Nov 18, 2023, 4:04 PM Renzo Mischianti @.***> wrote:

Hi, I think that It could broken if there was a memory leak. Try to check It. Bye Renzo

— Reply to this email directly, view it on GitHub https://github.com/xreef/LoRa_E32_Series_Library/issues/55#issuecomment-1817433776, or unsubscribe https://github.com/notifications/unsubscribe-auth/AK2KU577NE4SUY4UR2TCWEDYFBTYDAVCNFSM6AAAAAA3IT5GWOVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTQMJXGQZTGNZXGY . You are receiving this because you commented.Message ID: @.***>