correct slightly wrong sample rate

wav_player_hal.c

@@ -36,7 +36,7 @@ void wav_player_speaker_init(uint32_t sample_rate)
 	TIM_InitStruct.Prescaler = 0;
 	//TIM_InitStruct.Autoreload = 1451; //64 000 000 / 1451 ~= 44100 Hz
 
-	TIM_InitStruct.Autoreload = 64000000 / sample_rate; //to support various sample rates
+	TIM_InitStruct.Autoreload = 64000000 / sample_rate - 1; //to support various sample rates
 
 	LL_TIM_Init(SAMPLE_RATE_TIMER, &TIM_InitStruct);
 
@@ -49,11 +49,7 @@ void wav_player_speaker_init(uint32_t sample_rate)
 	//=========================================================
 	//configuring PA6 pin as TIM16 output
 
-	//furi_hal_gpio_init_ex(&gpio_ext_pa6, (GpioMode)GpioPullNo, (GpioPull)GpioModeAltFunctionPushPull, GpioSpeedVeryHigh, GpioAltFn14TIM16);
-	//furi_hal_gpio_init_ex(&gpio_ext_pa6, (GpioMode)GpioPullNo, (GpioPull)GpioModeAltFunctionPushPull, GpioSpeedLow, GpioAltFn14TIM16);
 	furi_hal_gpio_init_ex(&gpio_ext_pa6, GpioModeAltFunctionPushPull, GpioPullNo, GpioSpeedVeryHigh, GpioAltFn14TIM16);
-	//furi_hal_gpio_init_simple(&gpio_ext_pa6, GpioModeOutputPushPull);
-	//furi_hal_gpio_write(&gpio_ext_pa6, false);
 }
 
 void wav_player_speaker_start() {