[WP-34S] Cable and flashing options for Mac users

[John Galt]

(01-19-2015 06:50 PM)John Galt Wrote:  

(01-18-2015 10:42 PM)jebem Wrote:  you could test your PC to USB-serial-cable link, by connecting the TxD and RxD wires with one 1K resistor to from a loopback.

Yes, I did that, and the initial results using ZOC led me to believe the loopback was not working.

Follow up: my initial results were incorrect - the loopback test definitely works, so for now I have to conclude wp34sflash is not compatible with the Prolific device.

(01-18-2015 09:56 PM)Marcus von Cube Wrote:  Maybe the Prolific chips just discard the sync data if the baud rate is off too far. So the Atmel boot loader never knows how to adjust the frequency because it never sees any response from the PC or Mac.

Just guessing, I'm afraid.

I believe your "guess" is 100% correct.