USB Audio SOF

RE: USB Audio SOF

Kenneth — Thu, 03 Jan 2019 12:12:16 GMT

I have added this to internal Jira (NRFFOETT-2203), though I don't have an estimate of when the designers have time to look at it. For now my best suggestion is to try to workaround it in other ways.

Best regards,
Kenneth

RE: USB Audio SOF

abhipray — Thu, 13 Dec 2018 18:59:16 GMT

Hi,

Unfortunately, I cannot share the code since it's tightly coupled with the rest of our system. I don't have a headphones class, only microphone. I am getting SOF events inside usbd_user_ev_handler().

Here are relevant pieces of code:

static void mic_sof_ev_handler(uint16_t framecnt);

/* Initialize the usbd library */
static const app_usbd_config_t usbd_config = {
.ev_state_proc = usbd_user_ev_handler, .enable_sof = true};
APP_ERROR_CHECK(app_usbd_init(&usbd_config));

app_usbd_class_inst_t const *class_inst_mic =
app_usbd_audio_class_inst_get(&m_app_audio_microphone);
APP_ERROR_CHECK(app_usbd_audio_sof_interrupt_register(class_inst_mic, mic_sof_ev_handler));
APP_ERROR_CHECK(app_usbd_class_append(class_inst_mic));

app_usbd_power_events_enable();

RE: USB Audio SOF

Kenneth — Thu, 13 Dec 2018 10:28:43 GMT

Hello,

Can you share code and config?

Are you getting SOF events in hp_audio_user_ev_handler instead of hp_sof_ev_handler?

Best regards,
Kenneth