add examples and fix errors caused by examples

examples/use_config/nrf52840_ble_split/keyboard.toml

@@ -41,6 +41,9 @@ cols = 2
 row_offset = 0
 col_offset = 0
 ble_addr = [0x18, 0xe2, 0x21, 0x80, 0xc0, 0xc7]
+
+[split.central.matrix]
+matrix_type = "normal"
 input_pins = ["P0_12", "P0_13"]
 output_pins = ["P0_14", "P0_15"]
 
@@ -50,6 +53,8 @@ cols = 1
 row_offset = 2
 col_offset = 2
 ble_addr = [0x7e, 0xfe, 0x73, 0x9e, 0x66, 0xe3]
+[split.peripheral.matrix]
+matrix_type = "normal"
 input_pins = ["P1_11", "P1_10"]
 output_pins = ["P0_30"]
 

examples/use_config/nrf52840_ble_split_direct_pin/.cargo/config.toml

@@ -0,0 +1,38 @@
+[target.thumbv7m-none-eabi]
+# uncomment this to make `cargo run` execute programs on QEMU
+# runner = "qemu-system-arm -cpu cortex-m3 -machine lm3s6965evb -nographic -semihosting-config enable=on,target=native -kernel"
+
+[target.'cfg(all(target_arch = "arm", target_os = "none"))']
+# Have to use simmsb's elf2uf2 fork to flash https://github.com/simmsb/elf2uf2-rs 
+# runner = "elf2uf2-rs -d"
+runner = "probe-rs run --chip nRF52840_xxAA"
+linker = "flip-link"
+rustflags = [
+  # Previously, the linker arguments --nmagic and -Tlink.x were set here.
+  # They are now set by build.rs instead. The linker argument can still
+  # only be set here, if a custom linker is needed.
+
+  # By default, the LLD linker is used, which is shipped with the Rust
+  # toolchain. If you run into problems with LLD, you can switch to the
+  # GNU linker by uncommenting this line:
+  # "-C", "linker=arm-none-eabi-ld",
+
+  # If you need to link to pre-compiled C libraries provided by a C toolchain
+  # use GCC as the linker by uncommenting the three lines below:
+  # "-C", "linker=arm-none-eabi-gcc",
+  # "-C", "link-arg=-Wl,-Tlink.x",
+  # "-C", "link-arg=-nostartfiles",
+]
+
+[build]
+# Pick ONE of these default compilation targets
+# target = "thumbv6m-none-eabi"        # Cortex-M0 and Cortex-M0+
+# target = "thumbv7m-none-eabi"        # Cortex-M3
+# target = "thumbv7em-none-eabi"       # Cortex-M4 and Cortex-M7 (no FPU)
+target = "thumbv7em-none-eabihf"     # Cortex-M4F and Cortex-M7F (with FPU)
+# target = "thumbv8m.base-none-eabi"   # Cortex-M23
+# target = "thumbv8m.main-none-eabi"   # Cortex-M33 (no FPU)
+# target = "thumbv8m.main-none-eabihf" # Cortex-M33 (with FPU)
+
+[env]
+DEFMT_LOG = "debug"