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Re: SPI + I2C not working the same time

PostPosted: Wed Apr 26, 2017 1:02 pm
by nettworker

I have the same Problem, i use 4 max6675 boards connected with SPI Interface and a OLED Display connected with I2C.
The Display works as Standalone Projekt fine. If i paste the code into my Thermoprojekt, the Thermoprojekt works and the Display show nothing....


Re: SPI + I2C not working the same time

PostPosted: Thu Apr 27, 2017 3:01 am
by nettworker
Problem solved, it was my mistake. I had copied an older Codeversion with the wrong Pinsettings.....

Re: SPI + I2C not working the same time

PostPosted: Fri Oct 11, 2019 3:25 pm
by MigGo
martinayotte wrote:There must be a glitch somewhere... :?

It is hard for me to help you figure it out, since I have neither MFRC522 or SSD1306.

But I can say that I'm using a MCP23017 I2C GPIO Expander along with a SDCard on SPI, and they are working fine even if I used both of them in the same sketch.

Hi... Frist... Thanks.. I saw you make this forum be a great help for we, the newbies!!!!

I have the Idea to make a daily data logger, that send to internet the log of the day in a CSV format archive.

I search for the componets, and is the same you list here, and have the same problems with the I2C and SPI interfaces.

Can you give a sketch or wiring how I can use the SD card reader and the MCP23017?
Wich ESP8266 you use? I think to use the ESP-07 module.. because have a U.Fl Connector for external Antenna