I can't send At commands in hardware flowcontrol mode.
I tried some firmware of GM862-GPS, but I couldn't solve it. and I am having some problems that I think because of this.
when I set flowcontrol NONE, I can send AT commands but it doesn't work for python script upload operation etc.
about 1 year ago, I did lots of operations with module, but now I couldn't execute my python script in module.
could you help me what I did wrong?