On Tue, Apr 26, 2016 at 10:37 AM, bob@n4rfc.com wrote:
I have the same problem with writing to a Yaesu FT-60 handheld. I can download from the FT-60, but when I write I get a "Failed to communicate with radio: Radio is not responding" error.
I have checked the issues page and see there was a issue with writing to the FT-60 that was deemed closed after reloading drivers for the Prolific Chipset. My USB/RS-323 interface is a FTDI. The interface is a homebrew RS-232 to TTL level shifter that works, with a different cable, just fine to read and write to my FT-8900R.
I suspect there is some timing differences between the two radios.
The computer is a Winders 7 - 64 bit 3gHz I3 Processor with 8 gB ram. I am running the latest download of Chrip (4/19/16).
Is there any logging going on in Chrip that I can enable and look at?
There is a log. Details here: http://chirp.danplanet.com/projects/chirp/wiki/How_to_report_issues#Getting-...
But I suspect it won't tell you much more than you already know.
If you were me, I might try watching the signals on a digital oscilloscope / logic analyzer to see if the radio truly is not responding. You could then proceed with the timing hypothesis.
One thing you might check with your homebrew cable is that loopback is working. Chirp expects the serial tx/rx lines on Yaesu cables to be tied together, so you should see everything you type into a serial console echoed back. Chirp knows this and will read as many bytes as it writes to clear the buffer before looking for a response from the radio. If your cable isn't echoing, it will clear the response from the buffer without looking for it!
Tom KD7LXL