bare4_1

examples/rtic_bare4.rs

@@ -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