What do you mean by continuously? You don't want the pop between the end and beginning of the wav when looped, or are there drops inside the wav too?
> Kindly give me answers guys it will be very helpful for me as i am beginner in using STM32
Now I could dig into that code and tell you something like "add *** to line YYY", but how exactly would you learn from that as a beginner?
This is an overtly complex code, involving several layers of code and an operating system (RTOS). If the problem is between the end and beginning of the wav, the reason is, that upon AUDIOPLAYER_EOF, in [STM32Cube_FW_L4_Vx.x.x]\Projects\STM32L476G-Discovery\Demonstrations\Modules\audioplayer\audioplayer.c, the player is stopped by calling BSP_AUDIO_OUT_Stop()(which involves a complete "deinitialization" of all related hardware, including the CODEC) and then the whole bunch is started up again (AudioPlayer_Start()). This is witnessed by the pops and the fact that the beginning of the file is "cut", as the charge pump of the CODEC is starting up while the mcu is already streaming data. You would need to avoid the stop/start, and only rewind the file by simply
if (hAudioPlayer.state == AUDIOPLAYER_EOF) {
hAudioPlayer.read = hAudioPlayer.start;
}
JW
