From 42abeca4934afcdd85a09f1c8e74c30569046de7 Mon Sep 17 00:00:00 2001
From: Dario Nieuwenhuis <dirbaio@dirbaio.net>
Date: Wed, 26 May 2021 18:22:44 +0200
Subject: [PATCH] nrf/spim: disable and deconfigure pins on drop.

---
 embassy-nrf/src/spim.rs | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/embassy-nrf/src/spim.rs b/embassy-nrf/src/spim.rs
index bb43b7c7c..a29c1a3ee 100644
--- a/embassy-nrf/src/spim.rs
+++ b/embassy-nrf/src/spim.rs
@@ -14,6 +14,7 @@ use traits::spi::FullDuplex;
 use crate::gpio::sealed::Pin as _;
 use crate::gpio::{OptionalPin, Pin as GpioPin};
 use crate::interrupt::Interrupt;
+use crate::{fmt::*, gpio};
 use crate::{pac, util::slice_in_ram_or};
 
 pub use embedded_hal::spi::{Mode, Phase, Polarity, MODE_0, MODE_1, MODE_2, MODE_3};
@@ -153,6 +154,24 @@ impl<'d, T: Instance> Spim<'d, T> {
     }
 }
 
+impl<'d, T: Instance> Drop for Spim<'d, T> {
+    fn drop(&mut self) {
+        info!("spim drop");
+
+        // TODO check for abort, wait for xxxstopped
+
+        // disable!
+        let r = T::regs();
+        r.enable.write(|w| w.enable().disabled());
+
+        gpio::deconfigure_pin(r.psel.sck.read().bits());
+        gpio::deconfigure_pin(r.psel.miso.read().bits());
+        gpio::deconfigure_pin(r.psel.mosi.read().bits());
+
+        info!("spim drop: done");
+    }
+}
+
 impl<'d, T: Instance> FullDuplex<u8> for Spim<'d, T> {
     type Error = Error;