From ab4ecd141f806f4fce0b356de82c9a3bf672d485 Mon Sep 17 00:00:00 2001
From: hathach <thach@tinyusb.org>
Date: Thu, 12 Mar 2020 12:21:57 +0700
Subject: [PATCH] follow up to #114

---
 src/boards.c | 9 +++------
 src/boards.h | 1 +
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/src/boards.c b/src/boards.c
index 6c99fe4..fa68ddd 100644
--- a/src/boards.c
+++ b/src/boards.c
@@ -104,7 +104,6 @@ void board_teardown(void)
 #if defined(LED_NEOPIXEL) || defined(LED_RGB_RED_PIN)
   neopixel_teardown();
 #endif
-  // Button
 
   // Stop RTC1 used by app_timer
   NVIC_DisableIRQ(RTC1_IRQn);
@@ -117,12 +116,10 @@ void board_teardown(void)
   NRF_CLOCK->TASKS_LFCLKSTOP = 1UL;
 
   // make sure all pins are back in reset state
-  for (int i = 0; i < 32; ++i)
+  // NUMBER_OF_PINS is defined in nrf_gpio.h
+  for (int i = 0; i < NUMBER_OF_PINS; ++i)
   {
-    NRF_P0->PIN_CNF[i] = 2;
-#ifdef NRF_P1
-    NRF_P1->PIN_CNF[i] = 2;
-#endif
+    nrf_gpio_cfg_default(i);
   }
 }
 
diff --git a/src/boards.h b/src/boards.h
index 852f5fd..595f232 100644
--- a/src/boards.h
+++ b/src/boards.h
@@ -28,6 +28,7 @@
 #include <stdbool.h>
 #include <stdint.h>
 #include <string.h>
+#include "nrf.h"
 #include "nrf_gpio.h"
 
 #include "board.h"