Start adding custom board

CMakeLists.txt

@@ -1,5 +1,10 @@
 cmake_minimum_required(VERSION 3.20.0)
+
+list(APPEND DTS_ROOT ${CMAKE_CURRENT_LIST_DIR})
+list(APPEND BOARD_ROOT ${CMAKE_CURRENT_LIST_DIR})
+set(BOARD minico2)
+
 find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
 
-project(blink)
+project(minico2)
 target_sources(app PRIVATE src/main.c)

boards/xtensa/minico2/Kconfig.board

@@ -0,0 +1,7 @@
+config BOARD_MINICO2
+	bool "MiniCO2 Carbon Dioxide Monitor"
+	depends on SOC_SERIES_ESP32
+
+choice SOC_PART_NUMBER
+	default SOC_ESP32_WROOM_32UE_N4
+endchoice

boards/xtensa/minico2/Kconfig.defconfig

@@ -0,0 +1,12 @@
+# Copyright (c) 2023 Espressif Systems (Shanghai) Co., Ltd.
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD
+	default "minico2"
+	depends on BOARD_MINICO2
+
+config ENTROPY_GENERATOR
+	default y
+
+config HEAP_MEM_POOL_SIZE
+	default 98304

boards/xtensa/minico2/Kconfig.sysbuild

@@ -0,0 +1,10 @@
+# Copyright (c) 2023 Espressif Systems (Shanghai) Co., Ltd.
+# SPDX-License-Identifier: Apache-2.0
+
+choice BOOTLOADER
+	default BOOTLOADER_MCUBOOT
+endchoice
+
+choice BOOT_SIGNATURE_TYPE
+	default BOOT_SIGNATURE_TYPE_NONE
+endchoice

boards/xtensa/minico2/board.cmake

@@ -0,0 +1,11 @@
+# Copyright (c) 2023 Espressif Systems (Shanghai) Co., Ltd.
+# SPDX-License-Identifier: Apache-2.0
+
+if(NOT "${OPENOCD}" MATCHES "^${ESPRESSIF_TOOLCHAIN_PATH}/.*")
+  set(OPENOCD OPENOCD-NOTFOUND)
+endif()
+
+find_program(OPENOCD openocd PATHS ${ESPRESSIF_TOOLCHAIN_PATH}/openocd-esp32/bin NO_DEFAULT_PATH)
+
+include(${ZEPHYR_BASE}/boards/common/esp32.board.cmake)
+include(${ZEPHYR_BASE}/boards/common/openocd.board.cmake)

boards/xtensa/minico2/minico2-pinctrl.dtsi

@@ -0,0 +1,16 @@
+#include <zephyr/dt-bindings/pinctrl/esp-pinctrl-common.h>
+#include <dt-bindings/pinctrl/esp32-pinctrl.h>
+#include <zephyr/dt-bindings/pinctrl/esp32-gpio-sigmap.h>
+
+&pinctrl {
+	uart0_default: uart0_default {
+		group1 {
+			pinmux = <UART0_TX_GPIO1>;
+			output-high;
+		};
+		group2 {
+			pinmux = <UART0_RX_GPIO3>;
+			bias-pull-up;
+		};
+	};
+};

boards/xtensa/minico2/minico2.dts

@@ -0,0 +1,70 @@
+/dts-v1/;
+#include <espressif/esp32/esp32_wroom_32ue_n4.dtsi>
+#include "minico2-pinctrl.dtsi"
+
+/ {
+	model = "MiniCO2 Revision 0";
+	compatible = "espressif,esp32";
+
+	chosen {
+		zephyr,sram = &sram0;
+		zephyr,console = &uart0;
+		zephyr,shell-uart = &uart0;
+		zephyr,flash = &flash0;
+	};
+};
+
+&cpu0 {
+	clock-frequency = <ESP32_CLK_CPU_240M>;
+};
+
+&cpu1 {
+	clock-frequency = <ESP32_CLK_CPU_240M>;
+};
+
+&uart0 {
+	status = "okay";
+	current-speed = <115200>;
+	pinctrl-0 = <&uart0_default>;
+	pinctrl-names = "default";
+};
+
+/* Stolen from an Espressif devkit's dts, thanks Espressif */
+&flash0 {
+	status = "okay";
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		/* Reserve 60kB for the bootloader */
+		boot_partition: partition@1000 {
+			label = "mcuboot";
+			reg = <0x00001000 0x0000F000>;
+			read-only;
+		};
+
+		/* Reserve 1024kB for the application in slot 0 */
+		slot0_partition: partition@10000 {
+			label = "image-0";
+			reg = <0x00010000 0x00100000>;
+		};
+
+		/* Reserve 1024kB for the application in slot 1 */
+		slot1_partition: partition@110000 {
+			label = "image-1";
+			reg = <0x00110000 0x00100000>;
+		};
+
+		/* Reserve 256kB for the scratch partition */
+		scratch_partition: partition@210000 {
+			   label = "image-scratch";
+			   reg = <0x00210000 0x00040000>;
+		};
+
+		storage_partition: partition@250000 {
+			label = "storage";
+			reg = <0x00250000 0x00006000>;
+		};
+	};
+};

boards/xtensa/minico2/minico2_defconfig

@@ -0,0 +1,13 @@
+# Copyright (c) 2023 Espressif Systems (Shanghai) Co., Ltd.
+# SPDX-License-Identifier: Apache-2.0
+
+CONFIG_BOARD_MINICO2=y
+CONFIG_SOC_SERIES_ESP32=y
+
+CONFIG_MAIN_STACK_SIZE=2048
+
+CONFIG_CONSOLE=y
+CONFIG_SERIAL=y
+CONFIG_UART_CONSOLE=y
+
+CONFIG_GPIO=y

flake.lock

@@ -10,11 +10,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1699858083,
-        "narHash": "sha256-EXmVoYDYszdWlaxRzedQ3Q7ehbqIGfbe9EaHSBD4cgQ=",
+        "lastModified": 1700363859,
+        "narHash": "sha256-zT0vd5Vhd9dR3bTJpFCwtiBRkjY0+iYhvXVifIQ7vSo=",
         "ref": "refs/heads/canon",
-        "rev": "453af715eebd7102131d2cc6846dd23d49f853ac",
-        "revCount": 12,
+        "rev": "6400d73e5f103f15550beb8bfb0315a98121dfef",
+        "revCount": 13,
         "type": "git",
         "url": "https://git.mildlyfunctional.gay/artemist/packages.git"
       },

src/main.c

@@ -1,44 +1,4 @@
-/*
- * Copyright (c) 2016 Intel Corporation
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-#include <zephyr/kernel.h>
-#include <zephyr/drivers/gpio.h>
-
-/* 1000 msec = 1 sec */
-#define SLEEP_TIME_MS   1000
-
-/* The devicetree node identifier for the "led0" alias. */
-#define LED0_NODE DT_ALIAS(led0)
-
-/*
- * A build error on this line means your board is unsupported.
- * See the sample documentation for information on how to fix this.
- */
-static const struct gpio_dt_spec led = GPIO_DT_SPEC_GET(LED0_NODE, gpios);
-
 int main(void)
 {
-	int ret;
-
-	if (!gpio_is_ready_dt(&led)) {
-		return 0;
-	}
-
-	ret = gpio_pin_configure_dt(&led, GPIO_OUTPUT_ACTIVE);
-	if (ret < 0) {
-		return 0;
-	}
-
-	while (1) {
-		ret = gpio_pin_toggle_dt(&led);
-		if (ret < 0) {
-			return 0;
-		}
-		k_msleep(SLEEP_TIME_MS);
-	}
-	return 0;
 }