change calibration from analogin_reset() to analogin_init()

Author: dhalbert

ports/nrf/common-hal/analogio/AnalogIn.c

@@ -34,7 +34,7 @@
 
 #define CHANNEL_NO 0
 
-void analogin_reset(void) {
+void analogin_init(void) {
     // Calibrate the ADC once, on startup.
     nrf_saadc_enable();
     nrf_saadc_event_clear(NRF_SAADC_EVENT_CALIBRATEDONE);

ports/nrf/common-hal/analogio/AnalogIn.h

@@ -36,6 +36,6 @@ typedef struct {
     const mcu_pin_obj_t * pin;
 } analogio_analogin_obj_t;
 
-void analogin_reset(void);
+void analogin_init(void);
 
 #endif // MICROPY_INCLUDED_NRF_COMMON_HAL_ANALOGIO_ANALOGIN_H

ports/nrf/supervisor/port.c

@@ -84,6 +84,10 @@ safe_mode_t port_init(void) {
     // Configure millisecond timer initialization.
     tick_init();
 
+#if CIRCUITPY_ANALOGIO
+    analogin_init();
+#endif
+
     #if CIRCUITPY_RTC
     rtc_init();
     #endif
@@ -103,10 +107,6 @@ void reset_port(void) {
     spi_reset();
     uart_reset();
 
-#if CIRCUITPY_ANALOGIO
-    analogin_reset();
-#endif
-
 #if CIRCUITPY_AUDIOBUSIO
     i2s_reset();
 #endif