Lots of clean up, basic kscan working, remove zephyr-rust.

.gitmodules

@@ -1,3 +0,0 @@
-[submodule "zephyr-rust"]
-	path = zephyr-rust
-	url = https://github.com/tylerwhall/zephyr-rust.git

CMakeLists.txt

@@ -1,14 +1,9 @@
 # Find Zephyr. This also loads Zephyr's build system.
 cmake_minimum_required(VERSION 3.13.1)
 
-list(APPEND BOARD_ROOT .)
+list(APPEND BOARD_ROOT ${CMAKE_SOURCE_DIR})
 
-get_filename_component(ZEPHYR_RUST ${CMAKE_CURRENT_SOURCE_DIR}/zephyr-rust ABSOLUTE)
-list(APPEND ZEPHYR_EXTRA_MODULES ${ZEPHYR_RUST})
-
-include($ENV{ZEPHYR_BASE}/cmake/app/boilerplate.cmake NO_POLICY_SCOPE)
 find_package(Zephyr)
-
 project(zmk)
 
 # Add your source file to the "app" target. This must come after

boards/arm/planck/planck_rev6.dts

@@ -16,7 +16,6 @@
 		zephyr,shell-uart = &usart1;
 		zephyr,sram = &sram0;
 		zephyr,flash = &flash0;
-		zmk,matrix = &matrix0;
 	};
 
 	leds {
@@ -55,25 +54,23 @@
 		};
 	};
 
-	matrix0: kscan_matrix {
-		rows {
-			gpio-map = <0 0 &gpioa 10 0>,
-			           <1 0 &gpioa 9 0>,
-			           <2 0 &gpioa 8 0>,
-			           <3 0 &gpiob 15 0>,
-			           <4 0 &gpioc 13 0>,
-			           <5 0 &gpioc 14 0>,
-			           <6 0 &gpioc 15 0>,
-			           <7 0 &gpioa 2 0>;
-		};
-		columns {
-			gpio-map = <0 0 &gpiob 11 0>,
-			           <1 0 &gpiob 10 0>,
-			           <2 0 &gpiob 2 0>,
-			           <3 0 &gpiob 1 0>,
-			           <4 0 &gpioa 7 0>,
-			           <5 0 &gpiob 0 0>;
-		};
+	kscan {
+		compatible = "gpio-kscan";
+		label = "Keyscan Matrix";
+		row-gpios = <&gpioa 10 GPIO_ACTIVE_HIGH>,
+			       <&gpioa 9 GPIO_ACTIVE_HIGH>,
+			       <&gpioa 8 GPIO_ACTIVE_HIGH>,
+			       <&gpiob 15 GPIO_ACTIVE_HIGH>,
+			       <&gpioc 13 GPIO_ACTIVE_HIGH>,
+			       <&gpioc 14 GPIO_ACTIVE_HIGH>,
+			       <&gpioc 15 GPIO_ACTIVE_HIGH>,
+			       <&gpioa 2 GPIO_ACTIVE_HIGH>;
+		col-gpios = <&gpiob 11 GPIO_ACTIVE_HIGH>,
+				<&gpiob 10 GPIO_ACTIVE_HIGH>,
+				<&gpiob 2 GPIO_ACTIVE_HIGH>,
+				<&gpiob 1 GPIO_ACTIVE_HIGH>,
+				<&gpioa 7 GPIO_ACTIVE_HIGH>,
+				<&gpiob 0 GPIO_ACTIVE_HIGH>;
 	};
 
 	gpio_keys {

boards/shields/petejohanson_handwire/Kconfig.shield

@@ -0,0 +1,6 @@
+# Copyright (c) 2019 Linaro Limited
+# SPDX-License-Identifier: Apache-2.0
+
+config SHIELD_PETEJOHANSON_HANDWIRE
+	def_bool $(shields_list_contains,petejohanson_handwire)
+

boards/shields/petejohanson_handwire/petejohanson_handwire.overlay

@@ -0,0 +1,12 @@
+
+/ {
+	kscan {
+		compatible = "gpio-kscan";
+		label = "Handwired GPIO KSCAN matrix";
+
+		row-gpios = <&arduino_header 8 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
+		            <&arduino_header 10 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+		col-gpios = <&arduino_header 13 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>,
+		            <&arduino_header 14 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+	};
+};

prj.conf

@@ -1,4 +1,4 @@
-CONFIG_RUST=y
-CONFIG_RUST_ALLOC_POOL=y
+# CONFIG_RUST=y
+# CONFIG_RUST_ALLOC_POOL=y
 CONFIG_KSCAN=y
 CONFIG_KSCAN_GPIO=y

src/lib.rs

@@ -1,11 +0,0 @@
-#[no_mangle]
-pub extern "C" fn zmk_run() {
-}
-
-#[cfg(test)]
-mod tests {
-    #[test]
-    fn it_works() {
-        assert_eq!(2 + 2, 4);
-    }
-}

src/main.c

@@ -10,59 +10,24 @@
 #include <drivers/gpio.h>
 #include <drivers/kscan.h>
 
-#include "zmk_lib.h"
 
-/* 1000 msec = 1 sec */
-#define SLEEP_TIME_MS   1000
-
-/* The devicetree node identifier for the "led0" alias. */
-/*
-#define LED0_NODE DT_ALIAS(led0)
-
-#if DT_HAS_NODE(LED0_NODE)
-#define LED0	DT_GPIO_LABEL(LED0_NODE, gpios)
-#define PIN	DT_GPIO_PIN(LED0_NODE, gpios)
-#if DT_PHA_HAS_CELL(LED0_NODE, gpios, flags)
-#define FLAGS	DT_GPIO_FLAGS(LED0_NODE, gpios)
-#endif
-#else
-*/
-/* A build error here means your board isn't set up to blink an LED. */
-/*
-#error "Unsupported board: led0 devicetree alias is not defined"
-#define LED0	""
-#define PIN	0
-#endif
-
-#ifndef FLAGS
-#define FLAGS	0
-#endif
-
-*/
+void zmk_kscan_callback(struct device *dev, u32_t row, u32_t column, bool pressed) {
+	printk("Row: %d, col: %d, pressed: %s\n", row, column, (pressed ? "true" : "false"));
+}
 
 
 void main(void)
 {
-	/*
 	struct device *dev;
-	bool led_is_on = true;
-	int ret;
+	printk("Welcome to ZMK!\n");
 
-	dev = device_get_binding(LED0);
+	dev = device_get_binding(CONFIG_KSCAN_MATRIX_DEV_NAME);
 	if (dev == NULL) {
+		printk("NO DEVICE!\n");
 		return;
 	}
 
-	ret = gpio_pin_configure(dev, PIN, GPIO_OUTPUT_ACTIVE | FLAGS);
-	if (ret < 0) {
-		return;
-	}
-	*/
+	kscan_config(dev, zmk_kscan_callback);
 
-	zmk_run();
-	// while (1) {
-		// gpio_pin_set(dev, PIN, (int)led_is_on);
-		// led_is_on = !led_is_on;
-		// k_msleep(SLEEP_TIME_MS);
-	// }
+	kscan_enable_callback(dev);
 }

src/zmk_lib.h

@@ -1,7 +0,0 @@
-#ifndef ZMK_LIB_H
-#define ZMK_LIB_H
-
-void zmk_run(void);
-
-#endif
-

zephyr-rust

@@ -1 +0,0 @@
-Subproject commit 78b433aa9e0255a719fb0c3c9ac303f3924c1348