Hi Anton,
Unfortunately, I do not have a MacBook PC on my side to do the tests you mentioned.
Regarding the volume update, it is true that the example works at a fixed volume. However, you can modify that in USB_AudioCodecTask. If you debug the program, you will see that VOLUME_CHANGE_TASK is already called when you change the volume of your PC, however, that only prints the value through UART interface.
You will need to called this HAL_CODEC_SetVolume function as follows. Please keep in mind that volume value, support 0 ~ 100, 0 is mute, 100 is the maximum volume value. You will need to implement your own logic here.
if (g_UsbDeviceAudioSpeaker.codecTask & VOLUME_CHANGE_TASK)
{
#if USBCFG_AUDIO_CLASS_2_0
usb_echo("Set Cur Volume : %x\r\n",
(uint16_t)(g_UsbDeviceAudioSpeaker.curVolume20[1] << 8U) | g_UsbDeviceAudioSpeaker.curVolume20[0]);
#else
usb_echo("Set Cur Volume : %x\r\n",
(uint16_t)(g_UsbDeviceAudioSpeaker.curVolume[1] << 8U) | g_UsbDeviceAudioSpeaker.curVolume[0]);
#endif
HAL_CODEC_SetVolume(&codecHandle, kWM8960_HeadphoneLeft, volume);
g_UsbDeviceAudioSpeaker.codecTask &= ~VOLUME_CHANGE_TASK;
}
Hope it helps!
Best regards,
Felipe
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