From 04195a21221bcd7db4d9b95f6801cf2d2a62f114 Mon Sep 17 00:00:00 2001
From: nalydmerc <nalydmerc@gmail.com>
Date: Tue, 8 Apr 2025 18:16:41 -0400
Subject: [PATCH] I2C communications are working. <3

---
 src/main.rs | 27 ++-------------------------
 1 file changed, 2 insertions(+), 25 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index 3068df4..56c0197 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -33,30 +33,6 @@ fn toggle_mcu_led(gpioa: &mut stm32f103::GPIOA) {
     });
 }
 
-fn i2c1_write(addr: &u8, data: &[u8]) {
-    cortex_m::interrupt::free(|cs| {
-        if let Some(ref mut i2c1) = *I2C1.borrow(cs).borrow_mut() {
-            i2c1.cr1.modify(|_,w| w.start().set_bit());
-        
-            while i2c1.sr1.read().sb().bit_is_clear() {}
-        
-            i2c1.dr.write(|w| w.dr().bits(*addr));
-        
-            while i2c1.sr1.read().addr().bit_is_clear() {}
-            let _ = i2c1.sr2.read();
-        
-            for byte in data {
-                i2c1.dr.write(|w| w.dr().bits(*byte));
-                while i2c1.sr1.read().tx_e().bit_is_clear() {}
-            }
-        
-            while i2c1.sr1.read().btf().bit_is_clear() {}
-        
-            i2c1.cr1.modify(|_,w| w.stop().set_bit());
-        }
-    });
-}
-
 #[interrupt]
 fn I2C1_EV() {
     cortex_m::interrupt::free(|cs| {
@@ -108,7 +84,8 @@ fn main() -> ! {
     // Configure peripheral
     i2c1.cr1.modify(|_,w| w.pe().enabled());
     i2c1.cr1.modify(|_,w| w.smbus().i2c());
-    i2c1.oar1.modify(|_,w| w.add().bits(0x32));
+    i2c1.cr1.modify(|_, w| w.ack().set_bit());
+    i2c1.oar1.modify(|_,w| w.add().bits(0x32 << 1));
     i2c1.oar1.modify(|_,w| w.addmode().add7());
     
     // Pass peripheral reference to global static