Search found 3 matches

by temponit
Tue Jan 14, 2020 3:07 am
Forum: Hardware
Topic: Four plus channels of audio recording with I2S
Replies: 19
Views: 22406

Re: Four plus channels of audio recording with I2S

Some search gives that esp32_technical_reference_manual says: Multiple-channel scanning mode; there is a pattern table that defines the measurement rule for each SAR ADC. The scanning mode can be configured as a single mode, double mode, or alternate mode. But API for pattern table has a lot of issu...
by temponit
Mon Jan 13, 2020 11:41 am
Forum: Hardware
Topic: Four plus channels of audio recording with I2S
Replies: 19
Views: 22406

Re: Four plus channels of audio recording with I2S

Sorry, I don’t quite understand what the program code will look like allowing you to simultaneously record more than 2 ADC channels while using 2 I2S. I mean in the i2s_adc_dac example one ADC channel is recorded using one I2S.. Is there any ability to simultaneously ascque 3-4 adc channels with hig...
by temponit
Mon Jan 13, 2020 9:33 am
Forum: Hardware
Topic: Hall sensor readings
Replies: 0
Views: 1889

Hall sensor readings

I have several ESP32-WROOM-32В. Vref of ADC is factory calibrated. hall_sensor_read () returns a value from -19 to +56 (depends of module ). The question is why are the zero values (only Earth magnetic field) ​​different on this modules? What are the measurement units of hall_sensor_read (), zero bi...