more

Author: jacobrosenthal

.cargo/config

@@ -1,6 +1,8 @@
 # vim:ft=toml:
 [target.thumbv7em-none-eabihf]
+#runner = 'arm-none-eabi-gdb'
 runner = "probe-run --chip nRF52840_xxAA"
+
 rustflags = [
   "-C", "link-arg=-Tlink.x",
 ]

Cargo.toml

@@ -15,8 +15,8 @@ nrf52840-hal = "0.11.0"
 [dev-dependencies]
 cortex-m-rt = "0.6.13"
 panic-halt = "0.2"
-rtt-target = { version = "0.2.2", features = ["cortex-m"] }
-panic-probe = { git = "https://github.com/knurling-rs/probe-run", branch = "main" }
+rtt-target = { version = "0.3.0", features = ["cortex-m"] }
+panic-probe = "0.1.0"
 
 # for cargo flash
 [package.metadata]

README.md

@@ -2,11 +2,20 @@
 
 https://github.com/makerdiary/nrf52840-mdk
 
-## flashing and printing with probe-run
+## flashing with cargo flash
 
-This is the recommended way to go.
+This is the recommended way to go for flashing
 
-* Install the dependencies for[probe-run](https://crates.io/crates/probe-run)
+* Install the dependencies for[cargo-flash](https://crates.io/crates/cargo-flash)
+* Install probe-run `cargo install cargo-flash`
+
+Then simply `cargo flash --release --example blinky`
+
+## debugging with probe-run
+
+This is the recommended way to go for debugging
+
+* Install the dependencies for[probe-run](https://crates.io/crates/probe-run) (same as for cargo-flash if you already have that)
 * Install probe-run `cargo install probe-run`
 * On linux you need udev rules saved to somewhere like /etc/udev/rules.d/50-cmsis-dap.rules
 
@@ -40,30 +49,15 @@ stack backtrace:
    9: 0x00000156 - Reset
 ```
 
-Note fresh out of the box devices seem to need to be erased
-
-```bash
-Error: Error while flashing
-Caused by:
-The execution of 'erase_sector' failed with code 103
-```
-
-Install some other tool like cargo-flash or pyocd one time and
-
-```bash
-pip3 install pyocd
-pyocd erase -t nrf52840 --chip
-```
-
-## OpenOCD
+## Debugging with OpenOCD
 
 I was unable to get this working with the openocd that ships with
 ubuntu 18.04, but was able to hook up SWD to my JLink.  This thread
 is someone else having similar issues:
 
 https://devzone.nordicsemi.com/b/blog/posts/debugging-on-nrf52840-with-gdb-from-cli-on-linux
 
-## JLink
+## Debugging with JLink
 
 I hooked up my JLink using one of these breakouts:
 https://www.adafruit.com/product/2743
@@ -77,6 +71,10 @@ https://www.adafruit.com/product/2743
 | TDO   | SWO          |
 | GND   | GND x 3      |
 
+* Uncomment the `arm-none-eabi-gdb` runner in .cargo/config
+* Start your gdbserver
+* use `cargo run`
+
 ## License
 
 Licensed under either of