Changing i2s sample rate dynamically

AntonioTesta
Posts: 7
Joined: Wed Jun 21, 2023 11:47 am

Changing i2s sample rate dynamically

Postby AntonioTesta » Wed Jun 21, 2023 12:55 pm

Does anybody know how to change the i2s sample rate during execution time ? The .sample_rate bellow i2s_config_t i2s_config = ... accepts only constants, so there is no way to change that value during the program execution. Any help will be appreciated. Thanks

tempo.tian
Posts: 39
Joined: Wed Jun 22, 2022 12:10 pm

Re: Changing i2s sample rate dynamically

Postby tempo.tian » Tue Jun 27, 2023 3:57 am

i2s has following API:
esp_err_t i2s_stream_set_clk(audio_element_handle_t i2s_stream, int rate, int bits, int ch);

the rate setting is the sample_rate settings, please make sure the input data rate and I2S sample rate is matched or else the tone will listen to be strange

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