Can ADC work while wifi is on?

gpezzella
Posts: 52
Joined: Sun Jan 27, 2019 8:04 pm

Can ADC work while wifi is on?

Postby gpezzella » Wed Apr 03, 2019 2:43 pm

Hello
from document I read:
Note

Since the ADC2 is shared with the WIFI module, which has higher priority, reading operation of adc2_get_raw() will fail between esp_wifi_start() and esp_wifi_stop(). Use the return code to see whether the reading is successful.
In my code I have

Code: Select all

  WiFi.onEvent(WiFiEvent);
  ETH.begin();
or

Code: Select all

 WiFi.onEvent(WiFiEvent);
 WiFi.begin();
I will have problem?

e2738729
Posts: 35
Joined: Mon Nov 05, 2018 6:22 pm

Re: Can ADC work while wifi is on?

Postby e2738729 » Thu Apr 04, 2019 2:51 pm

ADC 1 has 8 channels that you can use. Do you need to use more than 8 channels for ADC sampling? It is true that ADC2 does not work if you have Wifi on.
ADC2 is used by the Wi-Fi driver. Therefore the application can only use ADC2 when the Wi-Fi driver has not started.
If you really need more than 8 channels with Wifi on, you probably have to multiplex the existing channels from ADC 1. Or you could use ADC 1 and ADC 2 with Bluetooth for wireless communication.

Khoi

Who is online

Users browsing this forum: No registered users and 58 guests