From 76102d28a42738b1bbb61adca6af3ce86c47296b Mon Sep 17 00:00:00 2001
From: kirbylife <kirbylife@protonmail.com>
Date: Sat, 10 Dec 2022 00:45:48 -0600
Subject: [PATCH] now use the read_volatile and xor op to flip the bit value

---
 src/main.rs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index 8ea7370..d58ee28 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -15,9 +15,9 @@ pub extern "C" fn main() -> ! {
     unsafe { write_volatile(DDRB, 0b11111111) };
 
     loop {
-        unsafe { write_volatile(PORTB, 0b00000000) };
-        sleep(1);
-        unsafe { write_volatile(PORTB, 0b00100000) };
+        let mut portb_value = unsafe { read_volatile(PORTB) };
+        portb_value = portb_value ^ (1 << 5);
+        unsafe { write_volatile(PORTB, portb_value) };
         sleep(1);
     }
 }