Increase ADC sampling time to increase accuracy

AdaptiveBrightnessFirmware/Src/adc.c

@@ -55,7 +55,7 @@ void MX_ADC_Init(void)
   */
   sConfig.Channel = ADC_CHANNEL_0;
   sConfig.Rank = ADC_RANK_CHANNEL_NUMBER;
-  sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
+  sConfig.SamplingTime = ADC_SAMPLETIME_239CYCLES_5;
   if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
   {
     Error_Handler();