feat: base project

CMakeLists.txt

@@ -0,0 +1,25 @@
+cmake_minimum_required(VERSION 3.13)
+
+# Initialize the Pico SDK
+include(${PICO_SDK_PATH}/external/pico_sdk_import.cmake)
+include_directories(${CMAKE_SOURCE_DIR}/config)
+project(${PROJ_NAME})
+pico_sdk_init()
+add_executable(${PROJ_NAME})
+
+if (STDIO_USB)
+    pico_enable_stdio_uart(${PROJ_NAME} 0)
+    pico_enable_stdio_usb(${PROJ_NAME} 1)
+endif()
+
+if (STDIO_UART)
+    pico_enable_stdio_uart(${PROJ_NAME} 1)
+    pico_enable_stdio_usb(${PROJ_NAME} 0)   
+endif()
+
+# Adjust libraries as needed
+target_link_libraries(${PROJ_NAME} ${APP_PICO_LIBS} ${CMAKE_SOURCE_DIR}/zig-out/${PROJ_NAME}.a)
+
+# Generate binary
+pico_add_extra_outputs(${PROJ_NAME})
+

build.zig

@@ -0,0 +1,57 @@
+const std = @import("std");
+const pico = @import("pico_sdk").pico_sdk;
+
+// Modify proj_name for your project name
+const proj_name = "pico_doorbell";
+
+// supported board: pico, pico_w, pico2, pico2_w
+// Modify board_name for your board
+const board_name = "pico_w";
+// supported pico platform: rp2040, rp2350-arm-s, rp2350-riscv
+// Modify pico_platform for select arm or risc-v, but the risc-v is not supported.
+const pico_platform = "rp2040";
+
+pub fn build(b: *std.Build) anyerror!void {
+    const stdio_type = .usb;
+    const cwy43_arch = .threadsafe_background;
+    const board = try pico.getBoardConfig(board_name, pico_platform, stdio_type, cwy43_arch);
+
+    const target = try pico.getCrossTarget(pico_platform);
+    const optimize = b.standardOptimizeOption(.{});
+
+    const lib = b.addStaticLibrary(.{
+        .name = "zig-pico",
+        .root_source_file = b.path("src/main.zig"),
+        .target = std.Build.resolveTargetQuery(b, target),
+        .optimize = optimize,
+    });
+
+    const option: pico.PicoAppOption = .{
+        .app_name = comptime proj_name,
+        .app_lib = lib,
+        .board = board,
+        // additional pico libs for application, it is none in blink application
+        .pico_libs = "pico_cyw43_arch_lwip_threadsafe_background",
+    };
+
+    std.log.info("Begin build app\n", .{});
+
+    const pico_build = try pico.addPicoApp(b, option);
+
+    const uf2_create_step = b.addInstallFile(b.path("build/pico_doorbell.uf2"), "pico_doorbell.uf2");
+    uf2_create_step.step.dependOn(pico_build);
+
+    const uf2_step = b.step("uf2", "Create firmware.uf2");
+    uf2_step.dependOn(&uf2_create_step.step);
+
+    const elf_create_step = b.addInstallFile(b.path("build/pico_doorbell.elf"), "pico_doorbell.elf");
+    elf_create_step.step.dependOn(pico_build);
+
+    const elf_step = b.step("elf", "Create firmware.elf");
+    elf_step.dependOn(&elf_create_step.step);
+
+    const copy_step = b.step("copy", "Copy firmware");
+    copy_step.dependOn(uf2_step);
+    copy_step.dependOn(elf_step);
+    b.default_step = copy_step;
+}

build.zig.zon

@@ -0,0 +1,52 @@
+.{
+    // This is the default name used by packages depending on this one. For
+    // example, when a user runs `zig fetch --save <url>`, this field is used
+    // as the key in the `dependencies` table. Although the user can choose a
+    // different name, most users will stick with this provided value.
+    //
+    // It is redundant to include "zig" in this name because it is already
+    // within the Zig package namespace.
+    .name = .zig_pico_doorbell2,
+
+    // This is a [Semantic Version](https://semver.org/).
+    // In a future version of Zig it will be used for package deduplication.
+    .version = "0.0.0",
+
+    // Together with name, this represents a globally unique package
+    // identifier. This field is generated by the Zig toolchain when the
+    // package is first created, and then *never changes*. This allows
+    // unambiguous detection of one package being an updated version of
+    // another.
+    //
+    // When forking a Zig project, this id should be regenerated (delete the
+    // field and run `zig build`) if the upstream project is still maintained.
+    // Otherwise, the fork is *hostile*, attempting to take control over the
+    // original project's identity. Thus it is recommended to leave the comment
+    // on the following line intact, so that it shows up in code reviews that
+    // modify the field.
+    .fingerprint = 0x9bf2eb3e009a59d0, // Changing this has security and trust implications.
+
+    // Tracks the earliest Zig version that the package considers to be a
+    // supported use case.
+    .minimum_zig_version = "0.14.0",
+
+    // This field is optional.
+    // Each dependency must either provide a `url` and `hash`, or a `path`.
+    // `zig build --fetch` can be used to fetch all dependencies of a package, recursively.
+    // Once all dependencies are fetched, `zig build` no longer requires
+    // internet connectivity.
+    .dependencies = .{
+        .pico_sdk = .{
+            .url = "git+https://github.com/adix7/zig-pico-cmake.git#8adc8a40000174065c2525531de4f46800233a07",
+            .hash = "pico_sdk-0.2.0-0FI1kYdcAAD3yWZDXMQdsiYBbTvlUku-AHXIX8DI50k6",
+        },
+    },
+    .paths = .{
+        "build.zig",
+        "build.zig.zon",
+        "src",
+        // For example...
+        //"LICENSE",
+        //"README.md",
+    },
+}

config/lwipopts.h

@@ -0,0 +1,89 @@
+#ifndef __LWIPOPTS_H__
+#define __LWIPOPTS_H__
+
+// Common settings used in most of the pico_w examples
+// (see https://www.nongnu.org/lwip/2_1_x/group__lwip__opts.html for details)
+
+// allow override in some examples
+#ifndef NO_SYS
+#define NO_SYS                      1
+#endif
+// allow override in some examples
+#ifndef LWIP_SOCKET
+#define LWIP_SOCKET                 0
+#endif
+#if PICO_CYW43_ARCH_POLL
+#define MEM_LIBC_MALLOC             1
+#else
+// MEM_LIBC_MALLOC is incompatible with non polling versions
+#define MEM_LIBC_MALLOC             0
+#endif
+#define MEM_ALIGNMENT               4
+#define MEM_SIZE                    4000
+#define MEMP_NUM_TCP_SEG            32
+#define MEMP_NUM_ARP_QUEUE          10
+#define PBUF_POOL_SIZE              24
+#define LWIP_ARP                    1
+#define LWIP_ETHERNET               1
+#define LWIP_ICMP                   1
+#define LWIP_RAW                    1
+#define TCP_WND                     (8 * TCP_MSS)
+#define TCP_MSS                     1460
+#define TCP_SND_BUF                 (8 * TCP_MSS)
+#define TCP_SND_QUEUELEN            ((4 * (TCP_SND_BUF) + (TCP_MSS - 1)) / (TCP_MSS))
+#define LWIP_NETIF_STATUS_CALLBACK  1
+#define LWIP_NETIF_LINK_CALLBACK    1
+#define LWIP_NETIF_HOSTNAME         1
+#define LWIP_NETCONN                0
+#define MEM_STATS                   0
+#define SYS_STATS                   0
+#define MEMP_STATS                  0
+#define LINK_STATS                  0
+// #define ETH_PAD_SIZE                2
+#define LWIP_CHKSUM_ALGORITHM       3
+#define LWIP_DHCP                   1
+#define LWIP_IPV4                   1
+#define LWIP_TCP                    1
+#define LWIP_UDP                    1
+#define LWIP_DNS                    1
+#define LWIP_TCP_KEEPALIVE          1
+#define LWIP_NETIF_TX_SINGLE_PBUF   1
+#define DHCP_DOES_ARP_CHECK         0
+#define LWIP_DHCP_DOES_ACD_CHECK    0
+
+#ifndef NDEBUG
+#define LWIP_DEBUG                  1
+#define LWIP_STATS                  1
+#define LWIP_STATS_DISPLAY          1
+#endif
+
+#define ETHARP_DEBUG                LWIP_DBG_OFF
+#define NETIF_DEBUG                 LWIP_DBG_OFF
+#define PBUF_DEBUG                  LWIP_DBG_OFF
+#define API_LIB_DEBUG               LWIP_DBG_OFF
+#define API_MSG_DEBUG               LWIP_DBG_OFF
+#define SOCKETS_DEBUG               LWIP_DBG_OFF
+#define ICMP_DEBUG                  LWIP_DBG_OFF
+#define INET_DEBUG                  LWIP_DBG_OFF
+#define IP_DEBUG                    LWIP_DBG_OFF
+#define IP_REASS_DEBUG              LWIP_DBG_OFF
+#define RAW_DEBUG                   LWIP_DBG_OFF
+#define MEM_DEBUG                   LWIP_DBG_OFF
+#define MEMP_DEBUG                  LWIP_DBG_OFF
+#define SYS_DEBUG                   LWIP_DBG_OFF
+#define TCP_DEBUG                   LWIP_DBG_OFF
+#define TCP_INPUT_DEBUG             LWIP_DBG_OFF
+#define TCP_OUTPUT_DEBUG            LWIP_DBG_OFF
+#define TCP_RTO_DEBUG               LWIP_DBG_OFF
+#define TCP_CWND_DEBUG              LWIP_DBG_OFF
+#define TCP_WND_DEBUG               LWIP_DBG_OFF
+#define TCP_FR_DEBUG                LWIP_DBG_OFF
+#define TCP_QLEN_DEBUG              LWIP_DBG_OFF
+#define TCP_RST_DEBUG               LWIP_DBG_OFF
+#define UDP_DEBUG                   LWIP_DBG_OFF
+#define TCPIP_DEBUG                 LWIP_DBG_OFF
+#define PPP_DEBUG                   LWIP_DBG_OFF
+#define SLIP_DEBUG                  LWIP_DBG_OFF
+#define DHCP_DEBUG                  LWIP_DBG_OFF
+
+#endif /* __LWIPOPTS_H__ */

config/pico/version.h

@@ -0,0 +1,22 @@
+// This file should look something like this:
+// version.h seems not strictly necessary
+
+/*
+ * Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+// ---------------------------------------
+// THIS FILE IS AUTOGENERATED; DO NOT EDIT
+// ---------------------------------------
+
+// #ifndef _PICO_VERSION_H
+// #define _PICO_VERSION_H
+
+// #define PICO_SDK_VERSION_MAJOR    1
+// #define PICO_SDK_VERSION_MINOR    5
+// #define PICO_SDK_VERSION_REVISION 1
+// #define PICO_SDK_VERSION_STRING   "1.5.1"
+
+// #endif

src/main.zig

@@ -0,0 +1,47 @@
+pub const p = @cImport({
+    @cInclude("pico.h");
+    @cInclude("stdio.h");
+    @cInclude("pico/stdlib.h");
+    // PICO W specific header
+    @cInclude("pico/cyw43_arch.h");
+});
+const std = @import("std");
+const BUTTON_PIN = 15;
+const GPIO_IN = false;
+
+// Basically the pico_w blink sample
+export fn main() c_int {
+    _ = p.stdio_init_all();
+    if (p.cyw43_arch_init() != 0) {
+        return -1;
+    }
+
+    p.cyw43_arch_enable_sta_mode();
+    if (p.cyw43_arch_wifi_connect_timeout_ms(@embedFile("wifi.txt"), @embedFile("password.txt"), p.CYW43_AUTH_WPA2_AES_PSK, 10000) == 1) {
+        p.cyw43_arch_gpio_put(p.CYW43_WL_GPIO_LED_PIN, true);
+        return -1;
+    }
+
+    p.cyw43_arch_gpio_put(p.CYW43_WL_GPIO_LED_PIN, true);
+    p.sleep_ms(200);
+    p.cyw43_arch_gpio_put(p.CYW43_WL_GPIO_LED_PIN, false);
+
+    p.gpio_init(BUTTON_PIN);
+    p.gpio_set_dir(BUTTON_PIN, GPIO_IN);
+
+    // while (true) {
+    //     p.cyw43_arch_gpio_put(p.CYW43_WL_GPIO_LED_PIN, true);
+    //     p.sleep_ms(500);
+    //     p.cyw43_arch_gpio_put(p.CYW43_WL_GPIO_LED_PIN, false);
+    //     p.sleep_ms(1000);
+    // }
+    // _ = p.printf("Hello world\n");
+
+    while (true) {
+        while (p.gpio_get(BUTTON_PIN)) {
+            p.cyw43_arch_gpio_put(p.CYW43_WL_GPIO_LED_PIN, true);
+            p.sleep_ms(50);
+        }
+        p.cyw43_arch_gpio_put(p.CYW43_WL_GPIO_LED_PIN, false);
+    }
+}