Hello,

I posted a similar question about a year ago. I am porting Arduino IDE code to ESP-IDF and cannot get SPI on ESP-IDF to work.

My code interfaces with a ADC that supports full duplex, SPI Mode 1 (TI AMC131M01).

I need to send the command 0x7880 followed by 0x0001. A dummy CRC is used to pad ...

I have tried the following:
* Setting the CS pin manually and assigning devcfg.spics_io_num = -1;
* Setting the CS pin manually and assigning devcfg.spics_io_num = ADC_CS_PIN;
* Not setting the CS pin manually and assigning devcfg.spics_io_num = ADC_CS_PIN;

None of them work.

Were you able to resolve this issue? I am facing a very similar issue porting SPI code from Arduino to ESP-IDF.

Hello,

I am in the process of porting Arduino IDE code to ESP-IDF code and cannot get my SPI code to work. I am new to SPI, so I may be missing something. Any help would be very much appreciated as I have scoured the internet for the possible issue.

My code interfaces with a ADC that supports full ...