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scaprilescaprile
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Add support for AP in Pico 2 W (valid for Pico W)
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‎tutorials/pico-sdk/pico-2-w-picosdk-baremetal-builtin-ap/CMakeLists.txt

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cmake_minimum_required(VERSION 3.13)
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include(pico_sdk_import.cmake)
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project(firmware)
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pico_sdk_init()
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add_executable(firmware
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main.c
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mongoose.c
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)
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target_include_directories(firmware PUBLIC
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.
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)
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target_link_libraries(firmware pico_stdlib pico_rand pico_cyw43_driver pico_cyw43_arch_none)
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pico_add_extra_outputs(firmware) # create map/bin/hex file etc.
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pico_enable_stdio_usb(firmware 1) # Route stdio
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add_definitions(-DMG_ENABLE_TCPIP_DRIVER_INIT=0)

‎tutorials/pico-sdk/pico-2-w-picosdk-baremetal-builtin-ap/Makefile

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CWD = $(realpath $(PWD))
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SDK_PATH ?= $(CWD)/pico-sdk
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all example:
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true
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build: build/firmware.uf2
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build/firmware.uf2: pico-sdk main.c
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mkdir -p build && cd build && PICO_SDK_PATH=$(SDK_PATH) cmake -DPICO_BOARD="pico2_w" -G "Unix Makefiles" .. && make
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pico-sdk:
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git clone --depth 1 -b 2.1.0 https://github.com/raspberrypi/pico-sdk $@
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cd $@ && git submodule update --init
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clean:
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rm -rf build pico-sdk

‎tutorials/pico-sdk/pico-2-w-picosdk-baremetal-builtin-ap/main.c

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// Copyright (c) 2022 Cesanta Software Limited
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// All rights reserved
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#include "mongoose.h"
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#define WIFI_SSID "YOUR_WIFI_NETWORK_NAME" // SET THIS!
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#define WIFI_PASS "YOUR_WIFI_PASSWORD" // SET THIS!
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static uint32_t s_ip, s_mask;
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// mif user states
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enum {AP, SCANNING, STOPPING_AP, CONNECTING, READY};
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static unsigned int state;
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static void mif_fn(struct mg_tcpip_if *ifp, int ev, void *ev_data) {
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// TODO(): should we include this inside ifp ? add an fn_data ?
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if (ev == MG_TCPIP_EV_ST_CHG) {
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MG_INFO(("State change: %u", *(uint8_t *) ev_data));
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}
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switch(state) {
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case AP: // we are in AP mode, wait for a user connection to trigger a scan or a connection to a network
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if (ev == MG_TCPIP_EV_ST_CHG && *(uint8_t *) ev_data == MG_TCPIP_STATE_UP) {
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MG_INFO(("Access Point started"));
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s_ip = ifp->ip, ifp->ip = MG_IPV4(192, 168, 169, 1);
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s_mask = ifp->mask, ifp->mask = MG_IPV4(255, 255, 255, 0);
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ifp->enable_dhcp_client = false;
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ifp->enable_dhcp_server = true;
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} else if (ev == MG_TCPIP_EV_ST_CHG && *(uint8_t *) ev_data == MG_TCPIP_STATE_READY) {
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MG_INFO(("Access Point READY !"));
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// simulate user request to scan for networks
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bool res = mg_wifi_scan();
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MG_INFO(("Starting scan: %s", res ? "OK":"FAIL"));
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if (res) state = SCANNING;
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}
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break;
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case SCANNING:
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if (ev == MG_TCPIP_EV_WIFI_SCAN_RESULT) {
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struct mg_wifi_scan_bss_data *bss = (struct mg_wifi_scan_bss_data *) ev_data;
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MG_INFO(("BSS: %.*s (%u) (%M) %d dBm %u", bss->SSID.len, bss->SSID.buf, bss->channel, mg_print_mac, bss->BSSID, (int) bss->RSSI, bss->security));
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} else if (ev == MG_TCPIP_EV_WIFI_SCAN_END) {
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struct mg_tcpip_driver_pico_w_data *d = (struct mg_tcpip_driver_pico_w_data *) ifp->driver_data;
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MG_INFO(("Wi-Fi scan finished"));
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// simulate user selection of a network (1/2: stop AP)
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bool res = mg_wifi_ap_stop();
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MG_INFO(("Manually stopping AP: %s", res ? "OK":"FAIL"));
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if (res) state = STOPPING_AP;
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// else we have a hw/fw problem
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}
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break;
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case STOPPING_AP:
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if (ev == MG_TCPIP_EV_ST_CHG && *(uint8_t *) ev_data == MG_TCPIP_STATE_DOWN) {
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struct mg_tcpip_driver_pico_w_data *d = (struct mg_tcpip_driver_pico_w_data *) ifp->driver_data;
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d->apmode = false;
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// simulate user selection of a network (2/2: actual connect)
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bool res = mg_wifi_connect(d->ssid, d->pass);
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MG_INFO(("Manually connecting: %s", res ? "OK":"FAIL"));
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if (res) {
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state = CONNECTING;
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ifp->ip = s_ip;
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ifp->mask = s_mask;
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if (ifp->ip == 0) ifp->enable_dhcp_client = true;
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ifp->enable_dhcp_server = false;
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} // else manually start AP as below
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}
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break;
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case CONNECTING:
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if (ev == MG_TCPIP_EV_ST_CHG && *(uint8_t *) ev_data == MG_TCPIP_STATE_READY) {
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MG_INFO(("READY!"));
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state = READY;
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// simulate user code disconnection and go back to AP mode (1/2: disconnect)
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bool res = mg_wifi_disconnect();
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MG_INFO(("Manually disconnecting: %s", res ? "OK":"FAIL"));
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} else if (ev == MG_TCPIP_EV_WIFI_CONNECT_ERR) {
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MG_ERROR(("Wi-Fi connect failed"));
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// manually start AP as below
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}
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break;
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case READY:
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// go back to AP mode after a disconnection (simulation 2/2), you could retry
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if (ev == MG_TCPIP_EV_ST_CHG && *(uint8_t *) ev_data == MG_TCPIP_STATE_DOWN) {
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struct mg_tcpip_driver_pico_w_data *d = (struct mg_tcpip_driver_pico_w_data *) ifp->driver_data;
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bool res = mg_wifi_ap_start(d->apssid, d->appass, d->apchannel);
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MG_INFO(("Disconnected"));
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MG_INFO(("Manually starting AP: %s", res ? "OK":"FAIL"));
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if (res) {
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state = AP;
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d->apmode = true;
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}
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}
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break;
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}
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}
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int main(void) {
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// initialize stdio
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stdio_init_all();
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sleep_ms(4000);
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struct mg_mgr mgr; // Initialise Mongoose event manager
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mg_mgr_init(&mgr); // and attach it to the interface
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// Initialise WiFi creds
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struct mg_tcpip_driver_pico_w_data driver_data = {
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.ssid = WIFI_SSID,
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.pass = WIFI_PASS,
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.apssid = "mongoose",
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.appass = "eightchars",
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.security = 0,
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.apsecurity = 0,
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.apchannel = 10,
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.apmode = true
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};
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state = driver_data.apmode ? AP : CONNECTING;
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// Initialise Mongoose network stack
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// Either set use_dhcp or enter a static config.
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// For static configuration, specify IP/mask/GW in network byte order
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struct mg_tcpip_if mif = {
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.ip = 0,
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.driver = &mg_tcpip_driver_pico_w,
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.driver_data = &driver_data,
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.recv_queue.size = 8192,
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.fn = mif_fn
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};
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mg_tcpip_init(&mgr, &mif);
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MG_INFO(("Init done, starting main loop"));
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MG_INFO(("Initialising application..."));
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MG_INFO(("Starting event loop"));
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for (;;) {
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mg_mgr_poll(&mgr, 0);
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}
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return 0;
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}

‎tutorials/pico-sdk/pico-2-w-picosdk-baremetal-builtin-ap/mongoose.c

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

‎tutorials/pico-sdk/pico-2-w-picosdk-baremetal-builtin-ap/mongoose.h

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

‎tutorials/pico-sdk/pico-2-w-picosdk-baremetal-builtin-ap/mongoose_config.h

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#pragma once
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// See https://mongoose.ws/documentation/#build-options
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#define MG_ARCH MG_ARCH_PICOSDK
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#define MG_OTA MG_OTA_PICOSDK
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#define MG_ENABLE_TCPIP 1
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#define MG_ENABLE_DRIVER_PICO_W 1
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#define MG_ENABLE_PACKED_FS 1
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// For static IP configuration, define MG_TCPIP_{IP,MASK,GW}
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// By default, those are set to zero, meaning that DHCP is used
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//
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// #define MG_TCPIP_IP MG_IPV4(192, 168, 1, 10)
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// #define MG_TCPIP_GW MG_IPV4(192, 168, 1, 1)
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// #define MG_TCPIP_MASK MG_IPV4(255, 255, 255, 0)
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// MAC address is read from OTP by the driver
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// Set your Wi-Fi credentials
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// Using a build-time constant:
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// #define MG_SET_WIFI_CREDS(ssid, pass) do { *ssid = "this"; *pass = "that"; } while (0)
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//
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// Using a custom function:
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extern void main_setcreds(char **ssid, char **pass);
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#define MG_SET_WIFI_CREDS(ssid, pass) main_setcreds(ssid, pass)

‎tutorials/pico-sdk/pico-2-w-picosdk-baremetal-builtin-ap/pico_sdk_import.cmake

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# This is a copy of <PICO_SDK_PATH>/external/pico_sdk_import.cmake
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# This can be dropped into an external project to help locate this SDK
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# It should be include()ed prior to project()
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if (DEFINED ENV{PICO_SDK_PATH} AND (NOT PICO_SDK_PATH))
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set(PICO_SDK_PATH $ENV{PICO_SDK_PATH})
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message("Using PICO_SDK_PATH from environment ('${PICO_SDK_PATH}')")
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endif ()
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if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT} AND (NOT PICO_SDK_FETCH_FROM_GIT))
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set(PICO_SDK_FETCH_FROM_GIT $ENV{PICO_SDK_FETCH_FROM_GIT})
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message("Using PICO_SDK_FETCH_FROM_GIT from environment ('${PICO_SDK_FETCH_FROM_GIT}')")
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endif ()
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if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT_PATH} AND (NOT PICO_SDK_FETCH_FROM_GIT_PATH))
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set(PICO_SDK_FETCH_FROM_GIT_PATH $ENV{PICO_SDK_FETCH_FROM_GIT_PATH})
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message("Using PICO_SDK_FETCH_FROM_GIT_PATH from environment ('${PICO_SDK_FETCH_FROM_GIT_PATH}')")
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endif ()
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if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT_TAG} AND (NOT PICO_SDK_FETCH_FROM_GIT_TAG))
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set(PICO_SDK_FETCH_FROM_GIT_TAG $ENV{PICO_SDK_FETCH_FROM_GIT_TAG})
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message("Using PICO_SDK_FETCH_FROM_GIT_TAG from environment ('${PICO_SDK_FETCH_FROM_GIT_TAG}')")
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endif ()
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if (PICO_SDK_FETCH_FROM_GIT AND NOT PICO_SDK_FETCH_FROM_GIT_TAG)
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set(PICO_SDK_FETCH_FROM_GIT_TAG "master")
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message("Using master as default value for PICO_SDK_FETCH_FROM_GIT_TAG")
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endif()
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set(PICO_SDK_PATH "${PICO_SDK_PATH}" CACHE PATH "Path to the Raspberry Pi Pico SDK")
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set(PICO_SDK_FETCH_FROM_GIT "${PICO_SDK_FETCH_FROM_GIT}" CACHE BOOL "Set to ON to fetch copy of SDK from git if not otherwise locatable")
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set(PICO_SDK_FETCH_FROM_GIT_PATH "${PICO_SDK_FETCH_FROM_GIT_PATH}" CACHE FILEPATH "location to download SDK")
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set(PICO_SDK_FETCH_FROM_GIT_TAG "${PICO_SDK_FETCH_FROM_GIT_TAG}" CACHE FILEPATH "release tag for SDK")
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if (NOT PICO_SDK_PATH)
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if (PICO_SDK_FETCH_FROM_GIT)
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include(FetchContent)
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set(FETCHCONTENT_BASE_DIR_SAVE ${FETCHCONTENT_BASE_DIR})
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if (PICO_SDK_FETCH_FROM_GIT_PATH)
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get_filename_component(FETCHCONTENT_BASE_DIR "${PICO_SDK_FETCH_FROM_GIT_PATH}" REALPATH BASE_DIR "${CMAKE_SOURCE_DIR}")
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endif ()
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# GIT_SUBMODULES_RECURSE was added in 3.17
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if (${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.17.0")
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FetchContent_Declare(
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pico_sdk
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GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk
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GIT_TAG ${PICO_SDK_FETCH_FROM_GIT_TAG}
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GIT_SUBMODULES_RECURSE FALSE
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)
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else ()
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FetchContent_Declare(
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pico_sdk
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GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk
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GIT_TAG ${PICO_SDK_FETCH_FROM_GIT_TAG}
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)
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endif ()
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if (NOT pico_sdk)
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message("Downloading Raspberry Pi Pico SDK")
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FetchContent_Populate(pico_sdk)
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set(PICO_SDK_PATH ${pico_sdk_SOURCE_DIR})
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endif ()
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set(FETCHCONTENT_BASE_DIR ${FETCHCONTENT_BASE_DIR_SAVE})
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else ()
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message(FATAL_ERROR
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"SDK location was not specified. Please set PICO_SDK_PATH or set PICO_SDK_FETCH_FROM_GIT to on to fetch from git."
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)
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endif ()
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endif ()
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get_filename_component(PICO_SDK_PATH "${PICO_SDK_PATH}" REALPATH BASE_DIR "${CMAKE_BINARY_DIR}")
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if (NOT EXISTS ${PICO_SDK_PATH})
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message(FATAL_ERROR "Directory '${PICO_SDK_PATH}' not found")
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endif ()
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set(PICO_SDK_INIT_CMAKE_FILE ${PICO_SDK_PATH}/pico_sdk_init.cmake)
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if (NOT EXISTS ${PICO_SDK_INIT_CMAKE_FILE})
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message(FATAL_ERROR "Directory '${PICO_SDK_PATH}' does not appear to contain the Raspberry Pi Pico SDK")
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endif ()
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set(PICO_SDK_PATH ${PICO_SDK_PATH} CACHE PATH "Path to the Raspberry Pi Pico SDK" FORCE)
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include(${PICO_SDK_INIT_CMAKE_FILE})

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