Changing the GPIO pins to 12&14 or 21&22 does get the communication working; however, it runs for anywhere from 2 seconds to ~1 minute and then starts getting timeouts; sometimes, after several seconds it will start working again but then times out and usually never recovers.

Hi - I'm trying to get a simple I2C program to talk to a MSP23017 chip but the i2c_master_cmd_begin reports a time-out. If I move the sda/clk leads to my Raspberry the chip works fine so I'm probably doing something wrong with the ESP32. The code is #define SDA_PIN 18 #define SCL_PIN 19 i2c_config_t...

@kolban Hello Neil - thanks for responding and I'm sorry for taking so long to reply The board in question is a DOIT Devkit V1. I tried a couple of usb cables with no luck; however, I also tried a second usb->uart connected to uart0 and this works for flashing but I have to reset manually as the usb...

Hello I'm having a problem loading compiled programs into the esp32. Initially I built the hello_world example on Ubuntu running in an Oracle vbox and flashed it fine - monitor showed it restarting and printing its message over and over again. I then tried a different program to try flashing some le...

Thanks - I used the file you offered and it appears compilation all worked

Thanks again for the speedy reply

Tom

I'm having the same problem. I downloaded the https://dl.espressif.com/dl/esp32_win32_msys2_environment_and_toolchain-20170330.zip yesterday and it appears the directory J:\msys32\opt\xtensa-esp32-elf\lib\gcc\xtensa-esp32-elf\5.2.0 doesn't have the same contents as indicated by the previous post. Pl...