12.2. Audio Input¶
【Debug Information】
/ # cat /proc/audio_debug/cviteka_adc
------------- CVI AI ATTRIBUTE -------------
AiDev Workmode SampleRate BitWidth
0 slave 128000 16
------------- CVI AI STATUS -------------
I2S0 is off
SDMA clk is off
ADC is off (0)
L-Mute R-Mute
no no
L-Vol R-Vol
0 0
【Analysis】
Record the current audio input device Parameters and status information.
【Parameter Description】
Parameter |
Decription |
|---|---|
AiDev |
Audio Input device ID |
Workmode |
Audio Input working mode master: I2S master mode slave: I2S slave mode |
SampleRate |
Sample rate. Range: [8k ~ 48K] |
BitWidth |
Sampling accuracy. Range: [16bit] |
I2S0 |
I2S status of the ADC codec interface. on: open off: closed |
SDMA clk |
sysDMA clock status on: open off: closed |
ADC |
ADC codec status 0x0: closed 0x3: open |
L-Mute |
Left channel mute mode yes: mute mode open no: mute mode closed |
R-Mute |
Right channel mute mode yes: mute mode open no: mute mode closed |
L-Vol |
Left channel volume Value range [0~24] |
R-Vol |
Right channel volume Value range [0~24] |