AP_HAL: update AnalogIn test to show the first 16 pins

libraries/AP_HAL/examples/AnalogIn/AnalogIn.pde

@@ -12,50 +12,26 @@
 
 const AP_HAL::HAL& hal = AP_HAL_BOARD_DRIVER;
 
-AP_HAL::AnalogSource* ch0;
-AP_HAL::AnalogSource* ch1;
-AP_HAL::AnalogSource* ch2;
-AP_HAL::AnalogSource* ch3;
-AP_HAL::AnalogSource* ch10;
-AP_HAL::AnalogSource* ch11;
-AP_HAL::AnalogSource* ch12;
-AP_HAL::AnalogSource* ch13;
-AP_HAL::AnalogSource* vcc;
+AP_HAL::AnalogSource* ch;
 
 void setup (void) {
     hal.console->printf_P(PSTR("Starting AP_HAL::AnalogIn test\r\n"));
-    ch0 = hal.analogin->channel(0);
-    ch1 = hal.analogin->channel(1);
-    ch2 = hal.analogin->channel(2);
-    ch3 = hal.analogin->channel(3);
-    ch10 = hal.analogin->channel(10);
-    ch11 = hal.analogin->channel(11);
-    ch12 = hal.analogin->channel(12);
-    ch13 = hal.analogin->channel(13);
-    vcc = hal.analogin->channel(ANALOG_INPUT_BOARD_VCC);
+    ch = hal.analogin->channel(0);
 }
 
-void loop (void) {
-    float meas_ch0  = ch0->voltage_average(); 
-    float meas_ch1  = ch1->voltage_average();
-    float meas_ch2  = ch2->voltage_average();
-    float meas_ch3  = ch3->voltage_average();
-    float meas_ch10 = ch10->voltage_average();
-    float meas_ch11 = ch11->voltage_average();
-    float meas_ch12 = ch12->voltage_average();
-    float meas_ch13 = ch13->voltage_average();
-    float meas_vcc = vcc->read_average() * 0.001;
-    hal.console->printf_P(PSTR("Voltage ch0:%.2f ch1:%.2f ch2:%.2f ch3:%.2f ch10:%.2f ch11:%.2f ch12:%.2f ch13:%.2f vcc:%.2f\n"),
-			  meas_ch0, 
-			  meas_ch1, 
-			  meas_ch2, 
-			  meas_ch3, 
-			  meas_ch10, 
-			  meas_ch11, 
-			  meas_ch12, 
-			  meas_ch13, 
-			  meas_vcc);
-    hal.scheduler->delay(200);
+static int8_t pin;
+
+void loop (void) 
+{
+    float v  = ch->voltage_average(); 
+    if (pin == 0) {
+	    hal.console->println();
+    }
+    hal.console->printf_P(PSTR("[%u %.3f] "),
+			  (unsigned)pin, v);
+    pin = (pin+1) % 16;
+    ch->set_pin(pin);
+    hal.scheduler->delay(100);
 }
 
 AP_HAL_MAIN();