Support Direct Pin matrix for split keyboards.

docs/src/split_keyboard.md

@@ -10,9 +10,13 @@ See `examples/use_rust/nrf52840_ble_split` for the wireless split keyboard examp
 
 See `examples/use_config/rp2040_split` and for the `keyboard.toml` + wired split keyboard example using rp2040.
 
+See `examples/use_config/rp2040_split` and for the `keyboard.toml` + wired split keyboard example using rp2040 and a direct pin matrix.
+
 See `examples/use_config/nrf52840_ble_split` for the `keyboard.toml` + wireless split keyboard example using nRF52840.
 
-**NOTE:** for `nrf52840_ble_split`, add 
+See `examples/use_config/nrf52840_ble_split` for the `keyboard.toml` + wireless split keyboard example using nRF52840 and a direct pin matrix.
+
+**NOTE:** for `nrf52840_ble_split`, add
 
 ```toml
 [patch.crates-io]
@@ -98,12 +102,16 @@ rows = 2
 cols = 2
 row_offset = 0
 col_offset = 0
-# Central's matrix pins 
-input_pins = ["P0_12", "P0_13"]
-output_pins = ["P0_14", "P0_15"]
 # Central's ble addr
+
 ble_addr = [0x18, 0xe2, 0x21, 0x80, 0xc0, 0xc7]
 
+# Central's matrix pins
+[split.central.matrix]
+matrix_type = "normal"
+input_pins = ["P0_12", "P0_13"]
+output_pins = ["P0_14", "P0_15"]
+
 # Note there're TWO brackets, since the peripheral is a list
 # Peripheral 0
 [[split.peripheral]]
@@ -112,25 +120,31 @@ rows = 2
 cols = 1
 row_offset = 2
 col_offset = 2
-input_pins = ["P1_11", "P1_10"]
-output_pins = ["P0_30"]
 # Peripheral's ble addr
 ble_addr = [0x7e, 0xfe, 0x73, 0x9e, 0x11, 0xe3]
 
+[split.peripheral.matrix]
+matrix_type = "normal"
+input_pins = ["P1_11", "P1_10"]
+output_pins = ["P0_30"]
+
 # Peripheral 1
 [[split.peripheral]]
 # Matrix definition
 rows = 2
 cols = 1
 row_offset = 2
 col_offset = 2
-input_pins = ["P1_11", "P1_10"]
-output_pins = ["P0_30"]
 # Peripheral's ble addr
 ble_addr = [0x7e, 0xfe, 0x71, 0x91, 0x11, 0xe3]
+
+[split.peripheral.matrix]
+matrix_type = "normal"
+input_pins = ["P1_11", "P1_10"]
+output_pins = ["P0_30"]
 ```
 
-When using split, the input/output pins defined in `[matrix]` section is not valid anymore. Instead, the input/output pins of split boards are defined in `[split.central]` and `[[split.peripheral]]`. The rows/cols in `[matrix]` section is the total number of rows/cols of the whole keyboard.
+When using split, the input/output pins defined in `[matrix]` section is not valid anymore. Instead, the input/output pins of split boards are defined in `[split.central.matrix]` and `[split.peripheral.matrix]`. The contents of the split matrix configuration is the same as for `[matrix]`. This means each peripheral and central keyboard also supports `direct_pin`. The rows/cols in `[matrix]` section is the total number of rows/cols of the whole keyboard.
 
 If you're using BLE, `ble_addr` is required for both central and peripheral. Each device needs a `ble_addr`.
 
@@ -166,9 +180,9 @@ serial = [{ instance = "UART0", tx_pin = "PIN_0", rx_pin = "PIN_1" }]
 
 ## Communication
 
-RMK supports both wired and wireless communication. 
+RMK supports both wired and wireless communication.
 
-Currently, the communication type indicates that how split central communicates with split peripherals. How the central talks with the host depends only on the central. 
+Currently, the communication type indicates that how split central communicates with split peripherals. How the central talks with the host depends only on the central.
 
 - For communication over BLE: the central talks with the host via BLE or USB, depends on whether the USB cable is connected
 - For communication over serial: the central can only use USB to talk with the host
@@ -196,4 +210,4 @@ src
    - peripheral.rs
 keyboard.toml
 Cargo.toml
-```
+```

examples/use_config/nrf52840_ble_split/.cargo/config.toml

@@ -3,7 +3,7 @@
 # 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 
+# 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"
@@ -35,4 +35,4 @@ target = "thumbv7em-none-eabihf"     # Cortex-M4F and Cortex-M7F (with FPU)
 # target = "thumbv8m.main-none-eabihf" # Cortex-M33 (with FPU)
 
 [env]
-DEFMT_LOG = "debug"
+DEFMT_LOG = "debug"

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"