Elmor Labs EVC Now Ships with Upgradeable Firmware
According to Elmor's message on the forum and his website, the new eVc devices are now shipping with upgradeable firmware. Elmor states, "I’ve done some work on the eVc firmware to allow for firmware upgrades over USB. This will allow for additional features and eventual bugfixes to be implemented by the user themselves. Current devices can be upgraded to support this feature as well, but requires an Atmel AVR compatible programmer. I can upgrade your device(s) for the cost of shipping, or perhaps if you bring it to me during Computex 2014."
He continues, "The device enters firmware upgrade mode (USBasp compatible) through shorting the SDA and GND pins of the I2C output during reset (simply put a jumper and replug the device). This is supported through the implementation of USBaspLoader using the forked version by Stephan Bärwolf."
For more information, check out the thread at the Elmor Labs EVC Support Forum thread.
Found a way to upgrade the current firmware over USB by an end-user (http://elmorlabs.com/index.php/2014-05-15/all-devices-now-ship-with-upgradable-firmware/). There's no need for hardware changes but the devices already shipped out would need to be upgraded with an Atmel AVR compatible programmer. This will be useful for bug fixing and eventual feature additions. For example I've been contemplating adding an I2C sniffer function in order to help reverse engineering software behavior and increase voltage limits.
If you're coming to Computex and want your device upgraded just let me know!
says:
can upgrade firmware with connecting a evc to another evc??? there is any chance?
Unfortunately not, needs AVR compatible programmer. They're actually not very expensive though: http://www.ebay.com/itm/High-Quality-1PCS-USBasp-USBISP-3-3V-5V-AVR-Programmer-USB-ATMEGA8-New-LW-/221401386529?pt=LH_DefaultDomain_0&hash=item338c8d0e21
says:
thanks...i get it;)
If I purchase one of those AVR programmers, could you detail how I would use it to update? (I'm pretty new to this)
Sure, it's a simple process. I just send you the firmware a long with an update script.
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