Fixed error in ADC conversion sequence in MD-3x0 platforms, improved behaviour of 'platform_pwrButtonStatus' in targets having the power switch on the volume knob.

platform/drivers/ADC/ADC1_MDx.c

@@ -104,8 +104,8 @@ void adc1_init()
                |  (15 << 5); /* CH15, HTEMP value on PC5                */
     #elif defined(PLATFORM_MD3x0)
     ADC1->SQR1 = 3 << 20;    /* Four channels to be converted          */
-    ADC1->SQR3 |= (1 << 0)   /* CH1, battery voltage on PA1            */
-               |  (0 << 5)   /* CH0, volume potentiometer level on PA0 */
+    ADC1->SQR3 |= (0 << 0)   /* CH0, volume potentiometer level on PA0 */
+               |  (1 << 5)   /* CH1, battery voltage on PA1            */
                |  (8 << 10)  /* CH8, RSSI value on PB0                 */
                |  (3 << 15); /* CH3, vox level on PA3                  */
     #else

platform/targets/DM-1801/platform.c

@@ -144,8 +144,11 @@ bool platform_pwrButtonStatus()
 {
     /*
      * When power knob is set to off, battery voltage measurement returns 0V.
+     * Here we set the threshold to 1V since, with knob in off position, there
+     * is always a bit of noise in the ADC measurement making the returned
+     * voltage not to be exactly zero.
      */
-    return (platform_getVbat() > 0.0f) ? true : false;
+    return (platform_getVbat() > 1.0f) ? true : false;
 }
 
 void platform_ledOn(led_t led)

platform/targets/GD-77/platform.c

@@ -143,8 +143,11 @@ bool platform_pwrButtonStatus()
 {
     /*
      * When power knob is set to off, battery voltage measurement returns 0V.
+     * Here we set the threshold to 1V since, with knob in off position, there
+     * is always a bit of noise in the ADC measurement making the returned
+     * voltage not to be exactly zero.
      */
-    return (platform_getVbat() > 0.0f) ? true : false;
+    return (platform_getVbat() > 1.0f) ? true : false;
 }
 
 void platform_ledOn(led_t led)

platform/targets/MD-3x0/platform.c

@@ -126,8 +126,11 @@ bool platform_pwrButtonStatus()
 {
     /*
      * When power knob is set to off, battery voltage measurement returns 0V.
+     * Here we set the threshold to 1V since, with knob in off position, there
+     * is always a bit of noise in the ADC measurement making the returned
+     * voltage not to be exactly zero.
      */
-    return (adc1_getMeasurement(ADC_VBAT_CH) > 0.0f) ? true : false;
+    return (platform_getVbat() > 1.0f) ? true : false;
 }
 
 void platform_ledOn(led_t led)

platform/targets/MD-UV3x0/platform.c

@@ -120,8 +120,11 @@ bool platform_pwrButtonStatus()
 {
     /*
      * When power knob is set to off, battery voltage measurement returns 0V.
+     * Here we set the threshold to 1V since, with knob in off position, there
+     * is always a bit of noise in the ADC measurement making the returned
+     * voltage not to be exactly zero.
      */
-    return (adc1_getMeasurement(ADC_VBAT_CH) > 0.0f) ? true : false;
+    return (platform_getVbat() > 1.0f) ? true : false;
 }
 
 void platform_ledOn(led_t led)