Wire displaying error messages when using I2C

[i164j9]

Board

ESP wroom 32 dev kit v1

Device Description

This is probably unrelated... but previously https://github.com/platformio/platform-espressif32/issues/786

I have not worked on my project in some time until today. As usual when I start vscode everything updates including platformio. I am not sure if there is any relevancy to PIO, Espressif, Jeff Rowberg. After uploading my freshly compiled firmware I now get these repeating error messages from Wire.cpp when I call initialize() from the MPU6050 library which makes calls to i2cdev.

console output [581391][E][Wire.cpp:422] beginTransmission(): could not acquire lock [581392][E][Wire.cpp:526] write(): NULL TX buffer pointer [581392][E][Wire.cpp:448] endTransmission(): NULL TX buffer pointer [581398][E][Wire.cpp:481] requestFrom(): NULL buffer pointer

My includes presently are:

include "Arduino.h"

include "MPU6050_6Axis_MotionApps20.h"

include

include

include "Preferences.h"

These are the different variations of includes I have tried:

include "Arduino.h"

include "I2Cdev.h"

include "Wire.h"

include "MPU6050_6Axis_MotionApps20.h"

include

include

include "Preferences.h"

---

include "Arduino.h"

include "Wire.h"

include "MPU6050_6Axis_MotionApps20.h"

include

include

include "Preferences.h"

All of the above variations have the same result because i2cdev is included in MPU6050.h and Wire.h is included in i2cdev.h.

when I attempt to compile and upload via the arduino ide everything works and i have no errors. when i change my platformio.ini ;platform = https://github.com/platformio/platform-espressif32.git ;platform = espressif32 ;platform = espressif32@3.4.0 platform = espressif32@3.5.0 I no longer get any errors and the IMU sensor does not work. it fails to initialize using 3.4.0 or 3.5.0. The other two show the looped error messages from Wire.cpp

So this is where I am stuck. and unsure where to post this issue. so this is my starting point. Below is all of the information I could collect to include:

I am using an esp wroom 32 dev kit v1 platformio dev 6.1.5a1 Windows 10 10.0.19044 vscode 1.70.1

package list PS C:\Users\dev\Documents\PlatformIO\Projects\ESPNOW> pio pkg list Resolving esp32doit-devkit-v1 dependencies...
Platform espressif32 @ 5.1.0 (required: espressif32) ├── framework-arduinoespressif32 @ 3.20004.0 (required: platformio/framework-arduinoespressif32 @ ~3.20004.0)
├── tool-esptoolpy @ 1.30300.0 (required: platformio/tool-esptoolpy @ ~1.30300.0) ├── tool-mkfatfs @ 2.0.1 (required: platformio/tool-mkfatfs @ ~2.0.0) ├── tool-mklittlefs @ 1.203.210628 (required: platformio/tool-mklittlefs @ ~1.203.0) ├── tool-mkspiffs @ 2.230.0 (required: platformio/tool-mkspiffs @ ~2.230.0) ├── tool-openocd-esp32 @ 2.1100.20220706 (required: platformio/tool-openocd-esp32 @ ~2.1100.0) └── toolchain-xtensa-esp32 @ 8.4.0+2021r2-patch3 (required: espressif/toolchain-xtensa-esp32 @ 8.4.0+2021r2-patch3) additionally MPU6050 and i2cdev by jeff rowberg https://github.com/jrowberg/i2cdevlib/tree/master/Arduino/MPU6050

platformio.ini [env:esp32doit-devkit-v1] platform = https://github.com/platformio/platform-espressif32.git ;platform = espressif32 ;extra_scripts = post:extra_script.py ;platform = espressif32@3.4.0 board = esp32doit-devkit-v1 framework = arduino monitor_speed = 115200 monitor_filters = esp32_exception_decoder, colorize

;esp-prog settings ; debug_tool = esp-prog ; upload_protocol = esp-prog ; debug_init_break = tbreak setup ; debug_speed = 2000

Hardware Configuration

GPIO pins 22,21 are the only pins connected on the board

Version

v2.0.4

IDE Name

platformio

Operating System

windows 10

Flash frequency

40mhz

PSRAM enabled

no

Upload speed

115200

Description

Wire has a series of error messages displayed when attempting to use I2C

Sketch

#include "Arduino.h"
#include "MPU6050_6Axis_MotionApps20.h"
#include <WiFi.h>
#include <esp_now.h>
#include "Preferences.h"
MPU6050_6Axis_MotionApps20 gyro(0x68);
void setup() {
  Serial.begin(115200);
  while(!Serial){};
  delay(100);
  Serial.println(WiFi.macAddress());

void setupGyro()
{
  gyro.initialize();
  if (gyro.testConnection())
  {
    Serial.println("gyro connection successful...");
  } else {
    Serial.print("gyro connection failed...\n");
    Serial.print("gyro will be disabled. check your sensor or your connections.");
  }
}

Debug Message

no crashes.
[581391][E][Wire.cpp:422] beginTransmission(): could not acquire lock
[581392][E][Wire.cpp:526] write(): NULL TX buffer pointer
[581392][E][Wire.cpp:448] endTransmission(): NULL TX buffer pointer
[581398][E][Wire.cpp:481] requestFrom(): NULL buffer pointer

Other Steps to Reproduce

No response

I have checked existing issues, online documentation and the Troubleshooting Guide

• [X] I confirm I have checked existing issues, online documentation and Troubleshooting guide.

This morning I got my scope out and found that sck D22 has no clock signal.

[i164j9]

Problem solved. I blew away the drive partitions and started fresh. Things are back to normal.

[AbuBakar-WEB1840]

In setup you missed "Wire.begin()"