Search found 61 matches

by leenowell
Sat Jan 18, 2020 8:55 pm
Forum: ESP32 IDF
Topic: SIM800 TTGO TCALL pppos_client
Replies: 8
Views: 879

Re: SIM800 TTGO TCALL pppos_client

Hi Both, Any chance you can post the full code that you used to get this working? I have tried both of your suggestions by modifying the esp example code and still can't get it working. @gleiva when I did your suggestion, I got a core dump when calling clear_sim800_pwkey @bharath when I did your sug...
by leenowell
Wed Jan 15, 2020 2:03 pm
Forum: ESP32 Arduino
Topic: From WiFi to Cellular 4G
Replies: 5
Views: 1632

Re: From WiFi to Cellular 4G

Hi

Just came across this. Which module did you buy and did you get this working? I have a SIM800L but that seems to only cater for 2G. Have been looking for a 4G module but no success yet. Also, were the AT commands proprietary for your module?

Thanks

Lee.
by leenowell
Sun Jan 05, 2020 11:26 am
Forum: ESP32 IDF
Topic: GSM Library
Replies: 5
Views: 417

Re: GSM Library

Hi

Haven't had any responses on this so thought I would give it one more try :)

thanks

Lee.
by leenowell
Sun Jan 05, 2020 11:23 am
Forum: Hardware
Topic: Strange GPIO voltages
Replies: 0
Views: 174

Strange GPIO voltages

Hi all, I have been doing some tests on the GPIOs to see how the various settings affect them. The tests use 3 pins - 32 set to GPIO_MODE_INPUT and GPIO_PULLUP_ONLY - 35 set to GPIO_MODE_INPUT and GPIO_FLOATING (input only pin with no pull up/ down circuitry) - 33 set to GPIO_MODE_INPUT and GPIO_FLO...
by leenowell
Thu Dec 12, 2019 5:31 pm
Forum: ESP32 IDF
Topic: GSM Library
Replies: 5
Views: 417

Re: GSM Library

Hi,

Anyone any thoughts? I have seen a libGSM as part of the PPPOS which seems good but doesn't look like it is maintained. Am a little stuck now so would appreciate any pointers in the right direction.

thanks

Lee.
by leenowell
Tue Dec 10, 2019 5:56 pm
Forum: ESP32 IDF
Topic: GSM Library
Replies: 5
Views: 417

Re: GSM Library

Hi all

Does anyone have any sample code for sending an SMS using PPOS? I am using the same board you mentiion so any help appreciated.

I have also seen libGSM mentioned but can't find an active git project for it on ESP 32. This might be another option ?

Thanks

Lee.
by leenowell
Mon Dec 09, 2019 8:23 am
Forum: ESP32 IDF
Topic: GSM Library
Replies: 5
Views: 417

Re: GSM Library

Thanks MarkSoft. I had seen a reference to PPPOS somewhere but didn't know what it was and couldn't see how it was used to drive the modem. I just checked the IDF documentation to see how to use it to send an SMS and can't find any reference to it. I suspect it is hidden in one of the sections. Any ...
by leenowell
Sat Dec 07, 2019 11:06 am
Forum: ESP32 IDF
Topic: GSM Library
Replies: 5
Views: 417

GSM Library

Hi All, I have ordered an ESP32 development board which has a GSM module. I have been looking for a good recently updated GSM library so I can send/ receive SMS as well as dabble with voice calling. I have seen TinyGSM seems to be popular on the Arduino forums but it doesn't support receiving SMS. I...
by leenowell
Fri Apr 05, 2019 7:05 pm
Forum: ESP32 IDF
Topic: Using a raspberry pi to debug
Replies: 0
Views: 391

Using a raspberry pi to debug

Hi all

I have found some articles online talking about using a pi as a JTAG debugger. It looks like this can be used to real time debug an ESP32. Has anyone actually got it working? Anyone know of a good tutorial?

Thanks

Lee.
by leenowell
Thu Mar 14, 2019 2:15 pm
Forum: ESP32 IDF
Topic: QEMU emulation and debugging
Replies: 0
Views: 1177

QEMU emulation and debugging

Hi All I have seen that QEMU now supports ESP32 as a virtual OS and looks like you can run and debug ESP32 apps on Linux without deploying to a physical device. I have also seen QEMU eclipse plug in which implies you can even debug from Eclipse. I tried to get QEMU up and running but am struggling w...

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