Forum Discussion

Alen1214's avatar
Alen1214
Icon for New Contributor rankNew Contributor
3 years ago
Solved

De10 standard connects to esp8266 via uart communication by IP uart (rs-232 serial port)

Hi, I need to communicate between de10 and esp8266 to send data to the cloud, but first I need to connect these 2 kits base on project GHRD. I see they can connect with each other by IP uart rs232 an...
Sw Development
  • tehjingy_Altera's avatar
    tehjingy_Altera
    3 years ago

    Hi Allen


    Do you have a scope available to measure the signals coming out from the pins?

    Do you have the specification for the USB transceiver that you are using? What operating signal logic it is able to capture?

    The signals coming out from the GPIO are 3.3Vs.


    Regards

    Jingyang, Teh


tehjingy_Altera's avatar
tehjingy_Altera
Icon for Regular Contributor rankRegular Contributor
3 years ago

Hi Allen


For the baud rate settings, you do not need to write to the divisor register as you have selected "Fixed Baudrate" in the IP Configuration.

Writing to the divisor register as no effect.

Gone through the code that you shared, it looks fine with all the condition checking before sending.


One thing I can think of is the stop bit settings. The tool that you are using to write and read from the UART does not have a settings to set the Stop bits.

Could you try with another tool such as Putty? In putty there is a Stop bits settings, with that set the Stop bit to 1 same as the IP configuration.


Regards

Jingyang,Teh