On 10/15/2019 02:15 AM, Carlos E. R. wrote:
On 14/10/2019 06.51, David C. Rankin wrote:
We are making progress, we were able to connect with minicom to ttyACM0 and it really is a N82 connection.
19200 8N2 | NOR | Minicom 2.7 | VT102 | Offline | ttyACM0
I wonder if it is a software emulated serial port, that would explain the 2 stop bits.
Well, these little embedded devices are packing more and more hardware into the little boards. The serial ports are actual hardware ports, though they are slightly different than the old Hayes modem chips (though they do accept the Hayes command set). The primary difference is they do not use XON/XOFF or RTS/CTS signaling for "I got it, you can send more". Instead they use trickery to measure pin voltages that ultimately works in a similar manner. How those are measured by software may explain the 2 stop bits on the RM46 board. While the MSP432 board uses 1 stop bit. It may also be a chip clock-cycle thing. If I stumble on the exacts reason, I'll follow up, but with nearly 2000 page ABIs each -- it may be a while :) -- David C. Rankin, J.D.,P.E. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org