Update cargo, vscode and openocd conf

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Cargo.toml

@@ -20,7 +20,7 @@ nb                      = "0.1.2"
 
 [dependencies.cortex-m]
 version         = "0.6.2"
-# features        = ["inline-asm"] # <- currently requires nightly compiler
+features        = ["inline-asm"] # <- currently requires nightly compiler
 
 [dependencies.cortex-m-rt]
 version         = "0.6.12"

examples/bare0.rs

@@ -29,18 +29,27 @@ const X_INIT: u32 = 10;
 static mut X: u32 = X_INIT;
 static mut Y: u32 = 0;
 
+
+fn read_u32(int: &mut u32) -> u32 {
+    let x: u32 = unsafe {*int};
+    x
+}
+
 #[entry]
 fn main() -> ! {
     // local mutable variable (changed in safe code)
     let mut x = unsafe { X };
 
-    loop {
+/*     loop {
         x += 1; // <- place breakpoint here (3)
         unsafe {
             X += 1;
             Y = X;
             assert!(x == X && X == Y);
         }
+    } */
+    loop {
+        read_u32(unsafe{&mut X});
     }
 }
 
@@ -57,6 +66,7 @@ fn main() -> ! {
 //    Look under Variables/Local what do you find.
 //
 //    ** your answer here **
+//    local: x = 11, static thingys
 //
 //    In the Expressions (WATCH -vscode) view add X and Y
 //    what do you find

openocd.cfg

-source [find interface/stlink.cfg]
+# source [find interface/stlink.cfg]
 # deprecated
-# source [find interface/stlink-v2-1.cfg] 
+source [find interface/stlink-v2-1.cfg] 
 transport select hla_swd
 
 # increase working area to 64KB

target/.rustc_info.json

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