Firmware update ZED-F9P (Qwiic version) via the ESP32 WROOM module using the Qwiic (I2C) connection

[Jan-Henk]

We currently utilize a significant number of your ZED-F9P (Qwiic version) and these are connected via the ZED-F9P Qwiic to the ESP32 WROOM.

Is it possible to update the ZED-F9P firmware via the ESP32 WROOM module using Bluetooth, and using the Qwiic (I2C) connection? Or is this process strictly limited to the USB-C interface? Please note that on all our ZED-F9P units, we have disabled all connections except for I2C and USB.

Thanks in advance for your responses

[PaulZC]

Hi @Jan-Henk ,

Yes, it takes a little work, but it is possible. Please see the post linked below. That post is about upgrading the X20P via I2C, but the same is possible on the ZED-F9P.

Best wishes,
Paul

How to update GNSS Flex pHAT - ZED-X20P firmware with u-center 2

Just to follow-up on this, and only for interest: It is possible to update the X20P via I2C. But, you need a board to act as the USB to I2C interface, emulating a UART interface. And you need to be careful with the I2C bus speed and hence the emulated Baud rate. The following worked for me: Using a SparkFun ESP32 Thing Plus USB-C Using the I2C Serial Passthrough example from the SparkFun u-blox GNSS v3 library Replace the start of setup() with the following, to select 38400 Baud and 100kHz bus speed: void setup() { delay(2000); // Wait for ESP32 and GNSS to start up mySerial.begin(38400); // Baud rate for u-center myWire.begin(); // Start I2C myWire.setClock(100000); // 100kHz Connect the Thing Plus to your Windows PC over USB Upload the modified sketch onto the Thing Plus - using the Arduino IDE Use a Qwiic cable to connect the Thing Plus to the X20P Breakout Be careful with I2C pull-ups. The X20P has built-in active pull-ups on the I2C bus. Additiona…