Can not compile on Arduino Nano ESP 32

ctodor

Hi,
I'm trying to compile one of the example on Arduino Nano ESP32. (MySensors version 2.3.2)
Am I doing something wrong?

***Compiling debug version of 'SoilMoistSensor' for 'Arduino Nano ESP32 (nano_nora)'

esp32-hal-uart.c: In function uartSetPins

esp32-hal-uart.c: 153:9: warning: 'return' with no value, in function returning non-void
return
^~~~~~
esp32-hal-uart.c:149: note declared here
bool uartSetPins(uint8_t uart_num, int8_t rxPin, int8_t txPin, int8_t ctsPin, int8_t rtsPin)
^~~~~~~~~~~

mysensors.h:61: In file included from
SoilMoistSensor.ino:73: from

MyHwESP32.cpp: In function bool hwInit()

MyHwESP32.cpp: 30:48: error: no matching function for call to 'USBCDC::begin(long unsigned int, SerialConfig)
MY_SERIALDEVICE.begin(MY_BAUD_RATE, SERIAL_8N1)

USB.h:21: In file included from
HardwareSerial.h:201: from
arduino.h:184: from
SoilMoistSensor.ino: from
USBCDC.h:70: note candidate void USBCDC begin(long unsigned int)
void begin(unsigned long baud=0)
^~~~~
USBCDC.h:70: note candidate expects 1 argument, 2 provided

SoilMoistSensor.ino: In function void loop()

SoilMoistSensor.ino: 143:17: error: call of overloaded 'sleep(uint32_t&)' is ambiguous
sleep(SLEEP_TIME)

unistd.h:23: In file included from
unistd.h:4: from
pthread.h:25: from
pthread.h:21: from
gthr-default.h:48: from
gthr.h:151: from
atomicity.h:35: from
basic_string.h:39: from
string:52: from
stdexcept:39: from
array:39: from
tuple:39: from
functional:54: from
Error compiling project sources
HardwareSerial.h:49: from
arduino.h:184: from
Debug build failed for project 'SoilMoistSensor'
SoilMoistSensor.ino: from***

eiten

@ctodor said in Can not compile on Arduino Nano ESP 32:

USBCDC

Can you please attach your sketch?

ctodor

@eiten
It is the SoilMoistSensor.ino skecth from MySensor example.

*// Enable debug prints to serial monitor
#define MY_DEBUG
//#define MY_GATEWAY_ESP32

// Enable and select radio type attached
//#define MY_RADIO_RF24
//#define MY_RADIO_NRF5_ESB
#define MY_RADIO_RFM69
//#define MY_RADIO_RFM95

#include <math.h> // Conversion equation from resistance to %
#include <MySensors.h>

// Setting up format for reading 3 soil sensors
#define NUM_READS (int)10 // Number of sensor reads for filtering
#define CHILD_ID 0

MyMessage msg(CHILD_ID, V_LEVEL);
uint32_t SLEEP_TIME = 30000; // Sleep time between reads (in milliseconds)

long buffer[NUM_READS];
int idx;

/// @brief Structure to be used in percentage and resistance values matrix to be filtered (have to be in pairs)
typedef struct {
int moisture; //!< Moisture
long resistance; //!< Resistance
} values;

const long knownResistor = 4700; // Constant value of known resistor in Ohms

int supplyVoltage; // Measured supply voltage
int sensorVoltage; // Measured sensor voltage

values valueOf[NUM_READS]; // Calculated moisture percentages and resistances to be sorted and filtered

int i; // Simple index variable

void setup()
{
// initialize the digital pins as an output.
// Pin 6,7 is for sensor 1
// initialize the digital pin as an output.
// Pin 6 is sense resistor voltage supply 1
pinMode(6, OUTPUT);

// initialize the digital pin as an output.
// Pin 7 is sense resistor voltage supply 2
pinMode(7, OUTPUT);

}

void presentation()
{
sendSketchInfo("Soil Moisture Sensor Reverse Polarity", "1.0");
present(CHILD_ID, S_MOISTURE);
}

void loop()
{

measure(6,7,1);
Serial.print ("\t");
Serial.println (average());
long read1 = average();

measure(7,6,0);
Serial.print ("\t");
Serial.println (average());
long read2= average();

long sensor1 = (read1 + read2)/2;

Serial.print ("resistance bias =" );
Serial.println (read1-read2);
Serial.print ("sensor bias compensated value = ");
Serial.println (sensor1);
Serial.println ();

//send back the values
send(msg.set((int32_t)ceil(sensor1)));
// delay until next measurement (msec)
sleep(SLEEP_TIME);

}

void measure (int phase_b, int phase_a, int analog_input)
{
// read sensor, filter, and calculate resistance value
// Noise filter: median filter

for (i=0; i<NUM_READS; i++) {

	// Read 1 pair of voltage values
	digitalWrite(phase_a, HIGH);                 // set the voltage supply on
	delayMicroseconds(25);
	supplyVoltage = analogRead(analog_input);   // read the supply voltage
	delayMicroseconds(25);
	digitalWrite(phase_a, LOW);                  // set the voltage supply off
	delay(1);

	digitalWrite(phase_b, HIGH);                 // set the voltage supply on
	delayMicroseconds(25);
	sensorVoltage = analogRead(analog_input);   // read the sensor voltage
	delayMicroseconds(25);
	digitalWrite(phase_b, LOW);                  // set the voltage supply off

	// Calculate resistance
	// the 0.5 add-term is used to round to the nearest integer
	// Tip: no need to transform 0-1023 voltage value to 0-5 range, due to following fraction
	long resistance = (knownResistor * (supplyVoltage - sensorVoltage ) / sensorVoltage) ;

	delay(1);
	addReading(resistance);
	Serial.print (resistance);
	Serial.print ("\t");
}

}

// Averaging algorithm
void addReading(long resistance)
{
buffer[idx] = resistance;
idx++;
if (idx >= NUM_READS) {
idx = 0;
}
}

long average()
{
long sum = 0;
for (int cnt = 0; cnt < NUM_READS; cnt++) {
sum += buffer[cnt];
}
return (long)(sum / NUM_READS);
}*

eiten

Your board seems to use USBCDC to communicate with the PC. So in the file /hal/architecture/ESP32/MyHwESP32.cpp, line 30, you have to change MY_SERIALDEVICE.begin(MY_BAUD_RATE, SERIAL_8N1); to MY_SERIALDEVICE.begin(MY_BAUD_RATE);.
Furthermore, as ESP32 implements the function sleep(uint32_t) iself, you need to change line 147 in the sketch from sleep(SLEEP_TIME); to sleep(SLEEP_TIME, false);.

Hope this helps!

Regards, Ei

eiten

As an additional info, sleep will not work on the ESP in version 2.3.2. Try the developement branch from the github if you need sleep, there I implemented this.

ctodor

@eiten Thx for the info.
"Try the developement branch from the github": can you give me the url?

eiten

@ctodor of course:
https://github.com/mysensors/MySensors/tree/development does contain sleep code for ESP. You can download the library here as a zip file.

ctodor

@eiten :+1:

eiten

@ctodor did you succeed?

ctodor

@eiten
Sorry for the late response, but I didn't had time to work on it until today.

Yes, I was able to compile but not to upload. After "uploading", the Arduino NANO ESP 32 disconects from the PC.
I must reset the board in order to be able to upload another sketch.

eiten

OK, so I suppose the build flags are incorrect. Do you use PlatformIO? Then, you could try:

build_flags = 
	-D ARDUINO_USB_MODE=1
	-D ARDUINO_USB_CDC_ON_BOOT=1

If you are on the Arduino IDE, you have to set Tools -> USB-Mode -> CDC-Mode. Ore something similar, I don't have the Arduino IDE installed ATM. IIRC, monitor speed must be set to 460800.

ctodor

@eiten Yep, I was able to upload the sketch after I've set Tools -> USB-Mode -> CDC-Mode.
Thank you for your help.

Well, I think I rushed with the conclusion.
Somehow, the bord is now in infinite boot loop:

0;255;3;0;14;Gateway startup complete.
0;255;0;0;18;2.3.2
ESP-ROM:esp32s3-20210327
Build:Mar 27 2021
rst:0x8 (TG1WDT_SYS_RST),boot:0x2b (SPI_FAST_FLASH_BOOT)
Saved PC:0x4200d223
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fce3808,len:0x44c
load:0x403c9700,len:0xbe4
load:0x403cc700,len:0x2a68
entry 0x403c98d4

repetes over and over

eiten

That's strange. Is it exactly the code from above? It seems, it is in gateway mode, but in your sketch, you commented out the gateway option...

ctodor

@eiten You are right. It is not the same sketch. The previuos sketch seems to work fine (I used it just to make sure I am able to compile and upload).
Now I'm trying to upload a sketch where the ardunio runs as gateway and this is what a need , a gateway that receives messages from a few magnetic door sensors.
But please, don't waste your time with me. I think I'm going to write my simple protocol to do such a simple task.

Thank you very much for your effort.

eiten

@ctodor You are very welcome

Can not compile on Arduino Nano ESP 32

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