[william]

Firmware 2.3 for the USB Tester OLED Backpack as been released into beta. Please provide any feedback from testing here.

The source and hex is on Github.com
https://github.com/FriedCircuits/FC-USB-Tester-OLED-Backpack/tree/master/USB_Tester_v2/USB_Tester_Beta_FW2.3

Command details

USB Tester Pinout and Protocol

It can be updated using the Arduino IDE or Wizkers.io

OLED Backpack: How to Update Firmware

Note: Currently there is a bug in using Wizkers.io to update firmware on Windows due to the COM port change when the bootloader is running. Hopefully we will have a fix soon.

New Features
===========================
Beta FW 2.2
* Cleaned up old code and added comment block to every function
* Added run timer, thanks to WeisTekEng
* Events Trigger serial notification of start and end of threshold and percent change
* Ability to save settings to EEPROM
* Ability to disable display for long term logging to save on wear
* New Commmands
* E:0 – Disable events
* E:1 – mA Threshold trigger – start and end uses existing W: command to set mA threshold
* E:2 – Single percent changed
* P:XXX – Set percent changed trigger
* C:0 – Output current saved settings
* C:1 – Load saved settings
* C:2 – Save settings
* C:3 – Output running settings
* D:0 – Disable display
* D:1 – Enable display

Hold button during boot to disable loading settings from EEPROM.

Beta FW 2.3 – Code review help from @PhilipFreidin from fliptronics.com
* Increase sample speed default to 1kHz! This is a biggy feature, made possible by the following optimizations
* Increase I2C clock to 800kHz from 100kHz
* USB D+/- ADC uses int and ADC clock set to 250khz, a bit past recommended of 200khz
* Removed F() to free up flash and should be faster but uses 14% more RAM
* Fixed drawEnergy, wasn’t using printjustifed2 so was rounding and displaying .00
* Using accumulators in readADC ISR and calculate in main loop mAh, mWh and current/voltage avg
* Optimize graph draw by moving mapping of values to drawGraph
* Optimize map function
* Reduce use of floats
* Libraries now included in source folder for portablity and customization of libraries
* Allow faster serial rate
* TODO: Handle negative current for monitoring battery charging.

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• This topic was modified 7 years, 9 months ago by william.
• This topic was modified 7 years, 9 months ago by william.