Merge pull request #2262 from jepler/cpb-speaker-disable

cpb: Disable the onboard speaker until request

Author: dhalbert

ports/nrf/boards/circuitplayground_bluefruit/mpconfigboard.h

@@ -69,3 +69,5 @@
 
 #define DEFAULT_UART_BUS_RX         (&pin_P0_30)
 #define DEFAULT_UART_BUS_TX         (&pin_P0_14)
+
+#define SPEAKER_ENABLE_PIN          (&pin_P1_04)

ports/nrf/common-hal/microcontroller/Pin.c

@@ -25,6 +25,7 @@
  */
 
 #include "shared-bindings/microcontroller/Pin.h"
+#include "shared-bindings/digitalio/DigitalInOut.h"
 
 #include "nrf_gpio.h"
 #include "py/mphal.h"
@@ -47,6 +48,19 @@ bool speaker_enable_in_use;
 STATIC uint32_t claimed_pins[GPIO_COUNT];
 STATIC uint32_t never_reset_pins[GPIO_COUNT];
 
+STATIC void reset_speaker_enable_pin(void) {
+#ifdef SPEAKER_ENABLE_PIN
+    speaker_enable_in_use = false;
+    nrf_gpio_cfg(SPEAKER_ENABLE_PIN->number,
+                 NRF_GPIO_PIN_DIR_OUTPUT,
+                 NRF_GPIO_PIN_INPUT_DISCONNECT,
+                 NRF_GPIO_PIN_NOPULL,
+                 NRF_GPIO_PIN_H0H1,
+                 NRF_GPIO_PIN_NOSENSE);
+    nrf_gpio_pin_write(SPEAKER_ENABLE_PIN->number, false);
+#endif
+}
+
 void reset_all_pins(void) {
     for (size_t i = 0; i < GPIO_COUNT; i++) {
         claimed_pins[i] = never_reset_pins[i];
@@ -68,10 +82,7 @@ void reset_all_pins(void) {
     #endif
 
     // After configuring SWD because it may be shared.
-    #ifdef SPEAKER_ENABLE_PIN
-    speaker_enable_in_use = false;
-    // TODO set pin to out and turn off.
-    #endif
+    reset_speaker_enable_pin();
 }
 
 // Mark pin as free and return it to a quiescent state.
@@ -104,10 +115,7 @@ void reset_pin_number(uint8_t pin_number) {
 
     #ifdef SPEAKER_ENABLE_PIN
     if (pin_number == SPEAKER_ENABLE_PIN->number) {
-        speaker_enable_in_use = false;
-        common_hal_digitalio_digitalinout_switch_to_output(SPEAKER_ENABLE_PIN, true, DRIVE_MODE_PUSH_PULL);
-        nrf_gpio_pin_dir_set(pin_number, NRF_GPIO_PIN_DIR_OUTPUT);
-        nrf_gpio_pin_write(pin_number, false);
+        reset_speaker_enable_pin();
     }
     #endif
 }