Added basic ADC implementation. The ADC is is init and calibrated. AD…

…C Read impl remaining.

Completed ADC Read method implementation

Changed ADC Bitwidth to 12, and removed extra config files while adding
gitignore rules for them.

Updated LSA example

.gitignore

@@ -1,4 +1,7 @@
 ### C ###
+# SDK Config files
+sdkconfig
+
 # Build folder
 build/
 

examples/lsa/main/main.c

@@ -37,15 +37,13 @@ static const char* TAG = "LSA_READINGS";
 void app_main(void)
 {
     // enable line sensor
-    ESP_ERROR_CHECK(enable_line_sensor());
-
-    //Union containing line sensor readings
+    adc_handle_t adc_handle;
+    ESP_ERROR_CHECK(enable_line_sensor(&adc_handle));
     line_sensor_array line_sensor_readings;
-
-    while(1)
+    while (1)
     {
         // get line sensor readings
-        line_sensor_readings = read_line_sensor();
+        line_sensor_readings = read_line_sensor(adc_handle);
         for(int i = 0; i < 5; i++)
         {
             // constrain lsa readings between BLACK_MARGIN and WHITE_MARGIN
@@ -58,6 +56,5 @@ void app_main(void)
 
         // log final lsa readings
         ESP_LOGI(TAG, "LSA_0: %d \t LSA_1: %d \t LSA_2: %d \t LSA_3: %d \t LSA_4: %d",line_sensor_readings.adc_reading[0], line_sensor_readings.adc_reading[1], line_sensor_readings.adc_reading[2], line_sensor_readings.adc_reading[3], line_sensor_readings.adc_reading[4]);
-
     }
-}
+}