We are having a problem with the HE910 getting it to switch
back to command mode using the DTR line. We are using the AT&D1
command and opening our connection with AT#SD. When we toggle the DTR
line, the chip doesn’t respond back, stays in data mode. We are driving
DTR low usually, then we toggle DTR line high for 50ms, then back down. I
don’t see any timing specs on this signal anywhere. Any ideas?
Here is my log, DTR seems to be working ..
AT#SGACT = 1,1
TEST STRING …LOOP COUNTER 1
TEST STRING …LOOP COUNTER 2
TEST STRING …LOOP COUNTER 3
TEST STRING …LOOP COUNTER 4
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