8 Commits

Author SHA1 Message Date
Michael Droogleever Fortuyn
1587daf5d1 Finish removing rustled 2019-11-30 21:31:41 +01:00
Michael Droogleever Fortuyn
4d631b12aa Add space 2019-11-30 20:58:55 +01:00
Michael Droogleever Fortuyn
72532bcee1 Fix debugging binary name 2019-11-30 20:57:00 +01:00
Michael Droogleever Fortuyn
6ed3b08955 Fix gdbinit name 2019-11-30 20:55:37 +01:00
Michael Droogleever Fortuyn
254312a988 Fix gdb command 2019-11-30 20:48:44 +01:00
Michael Droogleever Fortuyn
4b6be8fb61 Bump microbit 2019-11-23 12:16:22 +01:00
Michael Droogleever Fortuyn
74c52e42b6 Typo: build 2019-11-23 12:07:10 +01:00
Michael Droogleever Fortuyn
74950c7a78 Typo: verify 2019-11-23 11:51:53 +01:00
6 changed files with 11 additions and 11 deletions

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@@ -136,7 +136,7 @@ executing the binary usually has the operating system start by executing the C r
This in turn invokes the Rust runtime, as marked by the `start` language item,
which in turn invokes the main function.
Having enabled `no_std`, as we are targeting on a microcontroller,
Having enabled `no_std`, as we are targeting a microcontroller,
neither the crt0 nor the rust runtime are available,
so even implementing `start` would not help us.
We need to replace the operating system entry point.

View File

@@ -2,7 +2,7 @@
Flashing is the process of moving our program into the microcontroller's (persistent) memory. Once flashed, the microcontroller will execute the flashed program every time it is powered on.
In this case, our `rustled` program will be the only program in the microcontroller memory. By this I mean that there's nothing else running on the microcontroller: no OS, no daemon, nothing. `rustled` has full control over the device. This is what is meant by *bare-metal* programming.
In this case, our `microrust-start` program will be the only program in the microcontroller memory. By this I mean that there's nothing else running on the microcontroller: no OS, no daemon, nothing. `microrust-start` has full control over the device. This is what is meant by *bare-metal* programming.
<dl>
<dt>OS</dt>
@@ -71,8 +71,8 @@ available.
I mentioned that OpenOCD provides a GDB server so let's connect to that right now:
``` console
$ arm-none-eabi-gdb -q target/thumbv6m-none-eabi/debug/rustled
Reading symbols from target/thumbv6m-none-eabi/debug/rustled...done.
$ arm-none-eabi-gdb -q target/thumbv6m-none-eabi/debug/microrust-start
Reading symbols from target/thumbv6m-none-eabi/debug/microrust-start...done.
(gdb)
```
@@ -157,9 +157,9 @@ set print asm-demangle on
# Load your program, breaks at entry
load
# (optional) Add breakpoint at function
break rustled::main
break main
# Continue with execution
continue
```
Now we can learn how to debug code on the micro:bit.
Now we can learn how to debug code on the micro:bit.

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@@ -28,14 +28,14 @@ At this time, we are not interested in that "pre-main" part so let's skip right
the `main` function. We'll do that using a breakpoint:
```
(gdb) break rustled::main
(gdb) break main
Breakpoint 1 at 0x8000218: file src/main.rs, line 8.
(gdb) continue
Continuing.
Note: automatically using hardware breakpoints for read-only addresses.
Breakpoint 1, rustled::main () at src/rustled/src/main.rs:13
Breakpoint 1, main () at src/microrust-start/src/main.rs:13
13 let x = 42;
```

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@@ -4,5 +4,5 @@ version = "0.2.0"
[dependencies]
panic-halt = "~0.2"
microbit="~0.7"
microbit="~0.8"
cortex-m-rt="~0.6"

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@@ -2,5 +2,5 @@
In this chapter, we will discuss the basic I/O of embedded development in rust.
After this chapter,you should have all the neccesary basic knowledge to do embedded development in Rust,
After this chapter, you should have all the neccesary basic knowledge to do embedded development in Rust,
with anything remaining being solution specific.

View File

@@ -18,7 +18,7 @@ Bus 002 Device 033: ID 0d28:0204 NXP ARM mbed
```
In my case, the micro:bit got connected to the bus #2 and got enumerated as the device #33.
This means the file `/dev/bus/usb/002/033` *is* the Fmicro:bit3.
This means the file `/dev/bus/usb/002/033` is the micro:bit.
Let's check its permissions:
``` shell