From 65f5e2a975b456a28c9e00ff69c6f772c6cbe6f5 Mon Sep 17 00:00:00 2001
From: Josef Utbult <josutb-7@student.ltu.se>
Date: Fri, 5 Mar 2021 15:11:29 +0100
Subject: [PATCH] bare4_1
---
examples/rtic_bare4.rs | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/examples/rtic_bare4.rs b/examples/rtic_bare4.rs
index 1d53d13..f9f2fe7 100644
--- a/examples/rtic_bare4.rs
+++ b/examples/rtic_bare4.rs
@@ -18,9 +18,9 @@ use stm32f4;
// Peripheral addresses as constants
#[rustfmt::skip]
mod address {
- pub const PERIPH_BASE: u32 = 0x40000000;
- pub const AHB1PERIPH_BASE: u32 = PERIPH_BASE + 0x00020000;
- pub const RCC_BASE: u32 = AHB1PERIPH_BASE + 0x3800;
+ pub const PERIPH_BASE: u32 = 0x40000000;
+ pub const AHB1PERIPH_BASE: u32 = PERIPH_BASE + 0x00020000;
+ pub const RCC_BASE: u32 = AHB1PERIPH_BASE + 0x3800;
pub const RCC_AHB1ENR: u32 = RCC_BASE + 0x30;
pub const GBPIA_BASE: u32 = AHB1PERIPH_BASE + 0x0000;
pub const GPIOA_MODER: u32 = GBPIA_BASE + 0x00;
@@ -33,12 +33,14 @@ use address::*;
// rcc, chapter 6
// gpio, chapter 8
+// Here we have low level access to a bit in a register
#[inline(always)]
fn read_u32(addr: u32) -> u32 {
unsafe { core::ptr::read_volatile(addr as *const _) }
// core::ptr::read_volatile(addr as *const _)
}
+// Here we have low level access to a bit in a register
#[inline(always)]
fn write_u32(addr: u32, val: u32) {
unsafe {
@@ -83,7 +85,7 @@ const APP: () = {
//
// 1. Did you enjoy the blinking?
//
-// ** your answer here **
+// I prefere longer intervals in my blinking, but it was quite pleasant.
//
// Now lookup the data-sheets, and read each section referred,
// 6.3.11, 8.4.1, 8.4.7
--
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