On 11/15/2019 12:37 AM, Jim Brain wrote:
Looks like there might be a few more corner cases as well. Maybe modems did not accept mixed case. AT and at seem to work fine... Anyone have a modem handy to check?
Spoiler alert... They do not. Only 'at' and 'AT' are recognized. So, bit 5 of both chars must be the same for the command to be handled.
Jim -- Jim Brain br...@jbrain.com www.jbrain.com