Closed
Description
Board
ESP32 custom board.
Device Description
Custom board with ESP32 VROOM castellated module, although the problem likely affects all ESP32 variants.
Hardware Configuration
Various devices, including i2C
Version
latest master
IDE Name
Arduino
Operating System
Windows
Flash frequency
80mhz
PSRAM enabled
no
Upload speed
921600
Description
Since the latest update (that Arduino pulls in automatically) i2C no longer works on the module.
Sketch
/* ---------------------------------------------------------------- /
// Arduino I2C Scanner
// Re-writed by Arbi Abdul Jabbaar
// Using Arduino IDE 1.8.7
// Using GY-87 module for the target
// Tested on 10 September 2019
// This sketch tests the standard 7-bit addresses
// Devices with higher bit address might not be seen properly.
/ ---------------------------------------------------------------- */
#include <Wire.h> //include Wire.h library
void setup()
{
Wire.begin(); // Wire communication begin
Wire.setClock(100000);
Serial.begin(115200); // The baudrate of Serial monitor is set in 9600
while (!Serial); // Waiting for Serial Monitor
Serial.println("\nI2C Scanner");
}
void loop()
{
byte error, address; //variable for error and I2C address
int nDevices;
Serial.println("Scanning...");
nDevices = 0;
for (address = 1; address < 127; address++ )
{
// The i2c_scanner uses the return value of
// the Write.endTransmisstion to see if
// a device did acknowledge to the address.
Wire.beginTransmission(address);
error = Wire.endTransmission();
if (error == 0)
{
Serial.print("I2C device found at address 0x");
if (address < 16)
Serial.print("0");
Serial.print(address, HEX);
Serial.println(" !");
nDevices++;
}
else if (error == 4)
{
Serial.print("Unknown error at address 0x");
if (address < 16)
Serial.print("0");
Serial.println(address, HEX);
}
}
if (nDevices == 0)
Serial.println("No I2C devices found\n");
else
Serial.println("done\n");
delay(5000); // wait 5 seconds for the next I2C scan
}Debug Message
"No devices found"
Other Steps to Reproduce
No response
I have checked existing issues, online documentation and the Troubleshooting Guide
- I confirm I have checked existing issues, online documentation and Troubleshooting guide.