ESP32 multichannel ADC @ 1 KHz and sending it using bluetooth
Posted: Tue Oct 10, 2023 2:20 am
HI, I'm developing an application that needs to sample from 4 channels at 1 KHz and send the data using Bluetooth.
I've seen that ADC can operate in two modes: single read and continuous. In the continuous mode the minimum sampling rate is 8 KHz and it seems to be able to read from all the specified channels in a single conversion. Nevertheless it is not clear how the conversion frame is organized regarding the sampling rate, i.e. how many samples it should be configured to read before a new frame is read. Also if a frame contains many samples, it is not clear how many frames are read per second. I think that the documentation is not very clear in this point.
Also, going back to my requirement (convert 4 channels at 1 kHz and sending it trhough bluetooth), It is not clear to me which mode is the best (continuous vs single shot).
Any help is highly appreciated
I've seen that ADC can operate in two modes: single read and continuous. In the continuous mode the minimum sampling rate is 8 KHz and it seems to be able to read from all the specified channels in a single conversion. Nevertheless it is not clear how the conversion frame is organized regarding the sampling rate, i.e. how many samples it should be configured to read before a new frame is read. Also if a frame contains many samples, it is not clear how many frames are read per second. I think that the documentation is not very clear in this point.
Also, going back to my requirement (convert 4 channels at 1 kHz and sending it trhough bluetooth), It is not clear to me which mode is the best (continuous vs single shot).
Any help is highly appreciated