Closed
Description
Board
Custom Esp32
Device Description
Simcom A7672G
Hardware Configuration
not relevant
Version
v3.0.1
IDE Name
PlatformIO
Operating System
Linux
Flash frequency
40Mhz
PSRAM enabled
no
Upload speed
115200
Description
Testing ppp-modem on Simcom A7672 using the SIM7600 driver. Reset pulse of 200ms does not trigger reset of the modem.
A7672 datasheet says reset pulse should be 2.5secs, and in my testing anything under 2secs fails to reset.
Looking at other datasheets the pulse time for reset varies significantly across different simcom models, perhaps this value could be made configurable? If so can make a PR for this issue.
Sketch
from ppp library
perimanSetPinBusExtraType(_pin_rst, "PPP_MODEM_RST");
digitalWrite(_pin_rst, !_pin_rst_act_low);
delay(200);
digitalWrite(_pin_rst, _pin_rst_act_low);
delay(100);
### Debug Message
```plain
[103772][E][PPP.cpp:311] begin(): Failed to wait for communication
Other Steps to Reproduce
any reset pulse under 2000ms will fail to reset device ending with the above debug message.
I have checked existing issues, online documentation and the Troubleshooting Guide
- I confirm I have checked existing issues, online documentation and Troubleshooting guide.