https://github.com/shubhamshirsode/ESP32_BYN.git
Above URL code runs on ESp8266 with SoftSerial but when I run on ESP32 LORA Heltec model. It gives me "Guru Meditation Error: Core 0 store prohibited"
My question is Can we use software serial in ESP32 if yes then tell me what is problem in above code.
If not then please give me another solution.
I want to get data through Modbus RTU protocol on ESP32 heltec model.
Thank in advance.
I have the same problem. Searching on Github found a library that solves the problem.
My theory is that some SoftwareSerial implementations uses CLI and SEI macros, this blocks the FreeRTOS and triggers the exception.
Related
So, my knowladge in embedded development is quite bad and now I am trying to receive some data from PC inside my MCu STM32F429IGT6 which is on WaveShare Core4X9I dev-board and send it back via USB Virtual COM Port.
I realized how to set up connection from MCu part and I even see connected device from Windows 10 Device Manager but... it appears as STM Device in DFU Mode
I have tryed already to install drivers from ST for such things but they are useless and official documentation says that they are not needed for Windows 10.
I have been following tutorials where guys just clicked several times inside Cube MX, generated code and VCP worked out of the box.
The question is what am I doing wrong? I don`t even know what information you might ask for thats why I created GitHub repo: https://github.com/dessy4oko/stm32f429-vcp-appears-as-dfu
And this is events from Device Manager of Windows 10 (translation from ru lang):
Device USB\VID_0483&PID_DF11\305233703237 is running. code 410
Device USB\VID_0483&PID_DF11\305233703237 is configured. code 400
Device USB\VID_0483&PID_DF11\305233703237 have not been moved due to partial or ambiguous matching. code 442
Device USB\VID_0483&PID_DF11\305233703237 requires further installation. code 430
Thank you for any information about my mistakes.
STM32 starts in DFU mode if BOOT-pins are pulled accordingly:
"System memory" means embedded bootloader, DFU in this case. You need "Main Flash" to run your app.
Check jumpers and switches on your board. Refer also to the AN2606 app note for complete information.
I am trying to run the webRTC code which i have mentioned below, it is working fine when i am connecting with two devices using same network. But it is not connecting when the devices are in different networks and i am getting DOM Exception. please help me to fix it.
please refer the below link for your understanding
It seems like you need a TURN-Server. (CoTurn for example). The traffic will be relayed if a direct connection is not possible (NAT, Firewall,...)
I have a code burned on Arduino uno and I want to get the hex file of this code back?!
How can I make that ?!
On this forum it says you can extract the code from the Arduino to your computer but it will be in executable code which you cannot edit (it would probably be faster to rewrite the program)
http://forum.arduino.cc/index.php/topic,48218.0.html
You can read-out flash from an AVR via the ISP (if it has not been disabled) if you have suitable hardware/software. You can build the hardware using another Arduino, use "avrisp" as the ISP interface device ID in avrdude.
Do not disable the power to the AVR's SPI port - this will also disable the ISP interface (same pins), and lock you out permanently if you don't have a working bootloader to load code to re-enable again!
I've got an embedded linux and a Telit gprs/gps module ("GM862-GPS" on USB-Port). My current project requires it to be connected via gprs for sending data, while continuously asking the module for the gps position. I'm connected to gprs with a ppp-daemon and chatsripts, but when the connection is established, the module seems to be locked (no reaction on AT-commands through minicom).
I read, that 'AT+CMUX' could be one solution, which is provided by this device, but I don't know how to use it, since the 'CMUX User Guide' by Telit isn't really helpfull (and a program for automatic setup is only provided for windows).
Does anyone know, how to deal with this command, or even knows a better choice to handle this problem ?
My answer might be too late.
You need to use CMUX to create another COM port to talk to it. I played with CMUX once and I understand your frustrations. In my case, it worked for a while and then failed and I couldn't find out why. You might want to post your question at Roundsolutions.
I programmed the module by writing Python scripts and upload to the module. Their Python API provides two channels to send AT commands to the module: MDM and MDM2. I use MDM as the AT command and use MDM2 to create sockets. Initially, you use MDM2 to send AT commands to create a socket connection. Once connected, whatever data sent to it will be interpreted as data stream instead of AT commands. They allow you to send '+++' to switch back to AT command mode.
i'm trying to work with MiniUPnP. During testing testupnpigd.py i've got an error:
Discovering... delay=200ms 0 device(s)
detected Exception : No UPnP device
discovered
What should i do?
Verify using another tool that your SSDP broadcasts actually get replies.
Perhaps your router is not yet supported by MiniUPnP? Try contacting the author about it.