Merge pull request #2893 from cesanta/picow

Add Pico-W example

examples/rp2040/pico-w-sdk-builtin/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.13)
+include(pico-sdk/pico_sdk_init.cmake)
+
+project(firmware)
+pico_sdk_init()
+
+add_executable(firmware
+	driver_pico-w.c
+	main.c
+	mongoose.c
+	net.c
+	packed_fs.c
+)
+
+target_include_directories(firmware PUBLIC
+  .
+)
+
+target_link_libraries(firmware hardware_pio hardware_dma pico_stdlib cyw43_driver_picow)
+pico_add_extra_outputs(firmware)     # create map/bin/hex file etc.
+
+pico_enable_stdio_usb(firmware 1)    # Route stdio
+pico_enable_stdio_uart(firmware 0)   # to USB
+
+# Mongoose build flags in mongoose_config.h
+
+# Example build options
+add_definitions(-DHTTP_URL="http://0.0.0.0/")
+

examples/rp2040/pico-w-sdk-builtin/Makefile

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+RM = rm -rf
+MKBUILD = rm -rf build && mkdir -p build # test -d build || mkdir build
+ifeq ($(OS),Windows_NT)
+  RM = cmd /C del /Q /F /S
+  MKBUILD = if not exist build mkdir build
+endif
+
+all example:
+	true
+
+build: pico-sdk build/firmware.uf2
+
+build/firmware.uf2:
+	$(MKBUILD)
+	cd build && cmake -G "Unix Makefiles" .. && make
+
+pico-sdk:
+	git clone --depth 1 -b 1.5.1 https://github.com/raspberrypi/pico-sdk $@
+	cd $@ && git submodule update --init
+
+clean:
+	$(RM) pico-sdk build

examples/rp2040/pico-w-sdk-builtin/README.md

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+
+# Mongoose on PICO W
+
+

examples/rp2040/pico-w-sdk-builtin/cyw43_configport.h

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+/*
+ * Copyright (c) 2022 Raspberry Pi (Trading) Ltd.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+// This header is included by cyw43_driver to setup its environment
+
+// THIS FILE HAS BEEN EDITED, ORIGINAL FILE IN PICO-SDK
+
+#ifndef _CYW43_CONFIGPORT_H
+#define _CYW43_CONFIGPORT_H
+
+#include "boards/pico_w.h"
+#include "hardware/gpio.h"
+#include "pico/error.h"
+#include "pico/time.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Use our own TCP/IP stack
+#define CYW43_LWIP 0
+
+#ifndef CYW43_HOST_NAME
+#define CYW43_HOST_NAME "Mongoose"
+#endif
+
+#ifndef CYW43_GPIO
+#define CYW43_GPIO 1
+#endif
+
+#ifndef CYW43_LOGIC_DEBUG
+#define CYW43_LOGIC_DEBUG 0
+#endif
+
+#ifndef CYW43_USE_OTP_MAC
+#define CYW43_USE_OTP_MAC 1
+#endif
+
+#ifndef CYW43_NO_NETUTILS
+#define CYW43_NO_NETUTILS 1
+#endif
+
+#ifndef CYW43_IOCTL_TIMEOUT_US
+#define CYW43_IOCTL_TIMEOUT_US 1000000
+#endif
+
+#ifndef CYW43_USE_STATS
+#define CYW43_USE_STATS 0
+#endif
+
+// todo should this be user settable?
+#ifndef CYW43_HAL_MAC_WLAN0
+#define CYW43_HAL_MAC_WLAN0 0
+#endif
+
+#ifndef STATIC
+#define STATIC static
+#endif
+
+#ifndef CYW43_USE_SPI
+#define CYW43_USE_SPI 1
+#endif
+
+#ifndef CYW43_SPI_PIO
+#define CYW43_SPI_PIO 1
+#endif
+
+#ifndef CYW43_CHIPSET_FIRMWARE_INCLUDE_FILE
+#if CYW43_ENABLE_BLUETOOTH
+#define CYW43_CHIPSET_FIRMWARE_INCLUDE_FILE "wb43439A0_7_95_49_00_combined.h"
+#else
+#define CYW43_CHIPSET_FIRMWARE_INCLUDE_FILE "w43439A0_7_95_49_00_combined.h"
+#endif
+#endif
+
+#ifndef CYW43_WIFI_NVRAM_INCLUDE_FILE
+#define CYW43_WIFI_NVRAM_INCLUDE_FILE "wifi_nvram_43439.h"
+#endif
+
+// Note, these are negated, because cyw43_driver negates them before returning!
+#define CYW43_EPERM            (-PICO_ERROR_NOT_PERMITTED) // Operation not permitted
+#define CYW43_EIO              (-PICO_ERROR_IO) // I/O error
+#define CYW43_EINVAL           (-PICO_ERROR_INVALID_ARG) // Invalid argument
+#define CYW43_ETIMEDOUT        (-PICO_ERROR_TIMEOUT) // Connection timed out
+
+#define CYW43_NUM_GPIOS        CYW43_WL_GPIO_COUNT
+
+#define cyw43_hal_pin_obj_t uint
+
+// get the number of elements in a fixed-size array
+#define CYW43_ARRAY_SIZE(a) count_of(a)
+
+static inline uint32_t cyw43_hal_ticks_us(void) {
+    return time_us_32();
+}
+
+static inline uint32_t cyw43_hal_ticks_ms(void) {
+    return to_ms_since_boot(get_absolute_time());
+}
+
+static inline int cyw43_hal_pin_read(cyw43_hal_pin_obj_t pin) {
+    return gpio_get(pin);
+}
+
+static inline void cyw43_hal_pin_low(cyw43_hal_pin_obj_t pin) {
+    gpio_clr_mask(1 << pin);
+}
+
+static inline void cyw43_hal_pin_high(cyw43_hal_pin_obj_t pin) {
+    gpio_set_mask(1 << pin);
+}
+
+#define CYW43_HAL_PIN_MODE_INPUT           (GPIO_IN)
+#define CYW43_HAL_PIN_MODE_OUTPUT          (GPIO_OUT)
+
+#define CYW43_HAL_PIN_PULL_NONE            (0)
+#define CYW43_HAL_PIN_PULL_UP              (1)
+#define CYW43_HAL_PIN_PULL_DOWN            (2)
+
+static inline void cyw43_hal_pin_config(cyw43_hal_pin_obj_t pin, uint32_t mode, uint32_t pull, __unused uint32_t alt) {
+    assert((mode == CYW43_HAL_PIN_MODE_INPUT || mode == CYW43_HAL_PIN_MODE_OUTPUT) && alt == 0);
+    gpio_set_dir(pin, mode);
+    gpio_set_pulls(pin, pull == CYW43_HAL_PIN_PULL_UP, pull == CYW43_HAL_PIN_PULL_DOWN);
+}
+
+void cyw43_hal_get_mac(int idx, uint8_t buf[6]);
+
+void cyw43_hal_generate_laa_mac(int idx, uint8_t buf[6]);
+
+
+// documentation is king
+#define CYW43_THREAD_ENTER
+#define CYW43_THREAD_EXIT
+#define CYW43_THREAD_LOCK_CHECK
+
+// ??? and the ';' at the end is needed
+#define CYW43_SDPCM_SEND_COMMON_WAIT (void) 0;
+#define CYW43_DO_IOCTL_WAIT (void) 0;
+
+#define cyw43_delay_ms sleep_ms
+#define cyw43_delay_us sleep_us
+static inline void cyw43_schedule_internal_poll_dispatch(void (*func)(void)){
+	(void)func;	// do nothing, we'll call it anyway
+}
+
+#define CYW43_POST_POLL_HOOK
+
+// Allow malloc and free to be changed
+#ifndef cyw43_malloc
+#define cyw43_malloc malloc
+#endif
+#ifndef cyw43_free
+#define cyw43_free free
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif

examples/rp2040/pico-w-sdk-builtin/driver_pico-w.c

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+// Copyright (c) 2024 Cesanta Software Limited
+// All rights reserved
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "pico/stdlib.h"
+#include "pico/unique_id.h"
+#include "cyw43.h"
+#include "cyw43_country.h"
+
+#include "mongoose.h"
+#include "driver_pico-w.h"
+
+
+static struct mg_tcpip_if *s_ifp;
+
+static bool mg_tcpip_driver_pico_w_init(struct mg_tcpip_if *ifp) {
+  struct mg_tcpip_driver_pico_w_data *d = (struct mg_tcpip_driver_pico_w_data *) ifp->driver_data;
+  s_ifp = ifp;
+  // initialize WiFi chip and connect to network
+  cyw43_init(&cyw43_state);
+  cyw43_wifi_set_up(&cyw43_state, CYW43_ITF_STA, true, CYW43_COUNTRY_WORLDWIDE);
+  cyw43_wifi_join(&cyw43_state, strlen(d->ssid), d->ssid, strlen(d->pass), d->pass, CYW43_AUTH_WPA2_AES_PSK, NULL, CYW43_ITF_STA);
+  cyw43_wifi_get_mac(&cyw43_state, CYW43_ITF_STA, ifp->mac);
+  return true;
+}
+
+static size_t mg_tcpip_driver_pico_w_tx(const void *buf, size_t len,
+                                             struct mg_tcpip_if *ifp) {
+  return cyw43_send_ethernet(&cyw43_state, CYW43_ITF_STA, len, buf, false) ? 0 : len;
+  (void) ifp;
+}
+
+static bool mg_tcpip_driver_pico_w_up(struct mg_tcpip_if *ifp) {
+  return cyw43_wifi_link_status(&cyw43_state, CYW43_ITF_STA) == CYW43_LINK_JOIN ? 1 : 0;
+}
+
+void driver_pico_w_poll(void) {
+  cyw43_poll();
+}
+
+struct mg_tcpip_driver mg_tcpip_driver_pico_w = {
+  mg_tcpip_driver_pico_w_init,
+  mg_tcpip_driver_pico_w_tx,
+  NULL,
+  mg_tcpip_driver_pico_w_up,
+};
+
+void cyw43_cb_tcpip_init(cyw43_t *self, int itf) {}
+void cyw43_cb_tcpip_deinit(cyw43_t *self, int itf) {}
+void cyw43_cb_tcpip_set_link_up(cyw43_t *self, int itf) {}
+void cyw43_cb_tcpip_set_link_down(cyw43_t *self, int itf) {}
+
+// Called once per outstanding frame during a call to cyw43_poll
+void cyw43_cb_process_ethernet(void *cb_data, int itf, size_t len, const uint8_t *buf) {
+  if (itf != CYW43_ITF_STA) return;
+  mg_tcpip_qwrite((void *) buf, len, s_ifp);
+  (void) cb_data;
+}
+
+// Return mac address
+void cyw43_hal_get_mac(__unused int idx, uint8_t buf[6]) {
+  memcpy(buf, cyw43_state.mac, 6);
+}
+
+// Generate a mac address if one is not set in otp
+void cyw43_hal_generate_laa_mac(__unused int idx, uint8_t buf[6]) {
+  pico_unique_board_id_t board_id;
+  MG_DEBUG(("No MAC in cyw43 OTP, generated from board id"));
+  pico_get_unique_board_id(&board_id);
+  memcpy(buf, &board_id.id[2], 6);
+  buf[0] &= (uint8_t)~0x1; // unicast
+  buf[0] |= 0x2; // locally administered
+}
+
+// there's life beyond lwIP
+void pbuf_copy_partial(void){(void)0;}

examples/rp2040/pico-w-sdk-builtin/driver_pico-w.h

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+#pragma once
+
+struct mg_tcpip_driver_pico_w_data {
+  char *ssid;
+  char *pass;
+};
+
+extern struct mg_tcpip_driver mg_tcpip_driver_pico_w;
+
+void driver_pico_w_poll(void);

examples/rp2040/pico-w-sdk-builtin/main.c

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+// Copyright (c) 2024 Cesanta Software Limited
+// All rights reserved
+
+#include "pico/stdlib.h"
+
+#include "mongoose.h"
+#include "net.h"
+
+#include "driver_pico-w.h"
+
+#define WIFI_SSID "yourWiFiSSID"
+#define WIFI_PASS "yourWiFiPassword"
+
+
+int main(void) {
+  // initialize stdio
+  stdio_init_all();  
+
+  struct mg_mgr mgr;        // Initialise Mongoose event manager
+  mg_mgr_init(&mgr);        // and attach it to the interface
+  mg_log_set(MG_LL_DEBUG);  // Set log level
+
+  // Initialise WiFi creds
+  struct mg_tcpip_driver_pico_w_data driver_data = {
+    .ssid = WIFI_SSID,
+    .pass = WIFI_PASS
+  };
+  // Initialise Mongoose network stack
+  // Either set use_dhcp or enter a static config.
+  // For static configuration, specify IP/mask/GW in network byte order
+  struct mg_tcpip_if mif = {
+      .ip = 0,
+      .driver = &mg_tcpip_driver_pico_w,
+      .driver_data = &driver_data,
+      .recv_queue.size = 8192
+  };
+
+  mg_tcpip_init(&mgr, &mif);
+  MG_INFO(("Init done, starting main loop"));
+
+  MG_INFO(("Initialising application..."));
+  web_init(&mgr);
+
+  MG_INFO(("Starting event loop"));
+  for (;;) {
+    driver_pico_w_poll();
+    mg_mgr_poll(&mgr, 0);
+  }
+
+  return 0;
+}
+

examples/rp2040/pico-w-sdk-builtin/mongoose.c

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+../../../mongoose.c

examples/rp2040/pico-w-sdk-builtin/mongoose.h

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+../../../mongoose.h

examples/rp2040/pico-w-sdk-builtin/mongoose_config.h

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+#define MG_ARCH MG_ARCH_RP2040
+
+#define MG_ENABLE_TCPIP 1
+#define MG_ENABLE_TCPIP_DRIVER_INIT 0
+#define MG_ENABLE_PACKED_FS 1

examples/rp2040/pico-w-sdk-builtin/net.c

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+../../device-dashboard/net.c

examples/rp2040/pico-w-sdk-builtin/net.h

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+../../device-dashboard/net.h

examples/rp2040/pico-w-sdk-builtin/packed_fs.c

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+../../device-dashboard/packed_fs.c