Thanks to Hateful7 and Ran, I solved this problem. Just as Hateful7 said the version of BCM library should be bcm2835-1.45. But I meet another problem with the sampling rate. I change the sampling rate to 30k sps, and using bcm2835_spi_transfer() from bcm2835.c to read the data. But the sampling rat...

Hi Ran,

Oh, got you! I used USB flash to put the source code to RPI.
I tried all your steps, but It's still not working. I decide to contact WaveShare. And I will update my progress.

BR,
Yiya

Thanks for your reply!

Can I know what is the Install 7z package?

Yiya

Hi Ran, I tried enable the SPI again following their instruction, Installing the library spidev (SPI functions). Copy the installation package spidev to your RPi board, and unzip it. Enter the unzip file under the terminal, and run the following command to install the library: sudo python setup.py i...

Hi Novitsky, Thank you for your reply!\ I have connected these pins! (See attached Fig 1) And the results are still the same. I have checked the data from the SPI in ADS1256_test.c. It seems like in function ADS1256_Recive8Bit() , the value of read is always equals to 0xff which is in the function b...

Hi Dude, I am using the same AD/DA adc with RPI 3. But I cannot get any output from when I run the source code. I double checked the required libraries. I am trying to modified the source code to get any output from my screen but failed. I didn't connect any pins just put the AD/DA adc on the RPI 3....