feat: Test IOTish things

CMakeLists.txt

@@ -27,10 +27,15 @@ add_compile_options(-Wall
         -Wno-maybe-uninitialized
         )
 
-# Add your source files
-add_executable(${NAME}
-    main.cpp ledcontrol.cpp ledcontrol.h util.h config.h encoder.cpp encoder.h
-)
+if ((PICO_CYW43_SUPPORTED) AND (TARGET pico_cyw43_arch))
+    add_executable(${NAME}
+            main.cpp ledcontrol.cpp ledcontrol.h util.h config.h encoder.cpp encoder.h iot.cpp iot.h config_iot.h mbedtls_util.c
+        )
+else()
+    add_executable(${NAME}
+            main.cpp ledcontrol.cpp ledcontrol.h util.h config.h encoder.cpp encoder.h
+        )
+endif()
 
 # Include required libraries
 # This assumes `pimoroni-pico` is stored alongside your project
@@ -49,12 +54,33 @@ target_link_libraries(${NAME}
         pico_bootsel_via_double_reset
 )
 
-if (PICO_CYW43_SUPPORTED) # set by BOARD=pico-w
-    if (TARGET pico_cyw43_arch)
-        target_link_libraries(${NAME}
-                pico_cyw43_arch_none # we need Wifi to access the GPIO, but we don't need anything else
-        )
+if ((PICO_CYW43_SUPPORTED) AND (TARGET pico_cyw43_arch)) # set by BOARD=pico-w
+    set(WIFI_SSID "${WIFI_SSID}" CACHE INTERNAL "WiFi SSID")
+    set(WIFI_PASSWORD "${WIFI_PASSWORD}" CACHE INTERNAL "WiFi password")
+
+    if ("${WIFI_SSID}" STREQUAL "")
+        message(FATAL_ERROR "Skipping build as WIFI_SSID is not defined")
+    elseif ("${WIFI_PASSWORD}" STREQUAL "")
+        message(FATAL_ERROR "Skipping build as WIFI_PASSWORD is not defined")
     endif()
+
+    target_compile_definitions(${NAME} PRIVATE
+            WIFI_SSID=\"${WIFI_SSID}\"
+            WIFI_PASSWORD=\"${WIFI_PASSWORD}\"
+        )
+
+    target_include_directories(${NAME} PRIVATE
+            ${CMAKE_CURRENT_LIST_DIR}
+            ${CMAKE_CURRENT_LIST_DIR}/.. # for our common lwipopts
+        )
+
+    target_link_libraries(${NAME}
+#            pico_cyw43_arch_lwip_poll
+            pico_cyw43_arch_lwip_threadsafe_background
+            pico_lwip_mbedtls
+            pico_mbedtls
+            pico_lwip_mqtt
+        )
 endif()
 
 pico_enable_stdio_usb(${NAME} 1)

README.md

@@ -82,6 +82,7 @@ And the Pico SDK:
 ```
 git clone https://github.com/raspberrypi/pico-sdk
 cd pico-sdk
+git checkout develop # Switch to develop branch
 git submodule update --init
 export PICO_SDK_PATH=`pwd`
 cd ../

config_iot.h

@@ -0,0 +1,61 @@
+#ifndef CONFIG_IOT_H
+#define CONFIG_IOT_H
+
+// Set this if you want to connect to MQTT securely
+#define MQTT_TLS
+
+// MQTT server host name or ip address
+#define MQTT_SERVER_HOST "test.mosquitto.org"
+
+// MQTT ports
+#ifdef MQTT_TLS
+#define MQTT_SERVER_PORT 8883
+#else
+#define MQTT_SERVER_PORT 1883
+#endif
+
+// Enable this if you don't want certificate verification but still want to connect with TLS
+//#define MQTT_TLS_INSECURE
+
+//#define MQTT_SERVER_HOST "91.121.93.94"
+// add contents of https://test.mosquitto.org/ssl/mosquitto.org.crt here
+#define MQTT_TLS_CERT "-----BEGIN CERTIFICATE-----\n" \
+"MIIEAzCCAuugAwIBAgIUBY1hlCGvdj4NhBXkZ/uLUZNILAwwDQYJKoZIhvcNAQEL\n" \
+"BQAwgZAxCzAJBgNVBAYTAkdCMRcwFQYDVQQIDA5Vbml0ZWQgS2luZ2RvbTEOMAwG\n" \
+"A1UEBwwFRGVyYnkxEjAQBgNVBAoMCU1vc3F1aXR0bzELMAkGA1UECwwCQ0ExFjAU\n" \
+"BgNVBAMMDW1vc3F1aXR0by5vcmcxHzAdBgkqhkiG9w0BCQEWEHJvZ2VyQGF0Y2hv\n" \
+"by5vcmcwHhcNMjAwNjA5MTEwNjM5WhcNMzAwNjA3MTEwNjM5WjCBkDELMAkGA1UE\n" \
+"BhMCR0IxFzAVBgNVBAgMDlVuaXRlZCBLaW5nZG9tMQ4wDAYDVQQHDAVEZXJieTES\n" \
+"MBAGA1UECgwJTW9zcXVpdHRvMQswCQYDVQQLDAJDQTEWMBQGA1UEAwwNbW9zcXVp\n" \
+"dHRvLm9yZzEfMB0GCSqGSIb3DQEJARYQcm9nZXJAYXRjaG9vLm9yZzCCASIwDQYJ\n" \
+"KoZIhvcNAQEBBQADggEPADCCAQoCggEBAME0HKmIzfTOwkKLT3THHe+ObdizamPg\n" \
+"UZmD64Tf3zJdNeYGYn4CEXbyP6fy3tWc8S2boW6dzrH8SdFf9uo320GJA9B7U1FW\n" \
+"Te3xda/Lm3JFfaHjkWw7jBwcauQZjpGINHapHRlpiCZsquAthOgxW9SgDgYlGzEA\n" \
+"s06pkEFiMw+qDfLo/sxFKB6vQlFekMeCymjLCbNwPJyqyhFmPWwio/PDMruBTzPH\n" \
+"3cioBnrJWKXc3OjXdLGFJOfj7pP0j/dr2LH72eSvv3PQQFl90CZPFhrCUcRHSSxo\n" \
+"E6yjGOdnz7f6PveLIB574kQORwt8ePn0yidrTC1ictikED3nHYhMUOUCAwEAAaNT\n" \
+"MFEwHQYDVR0OBBYEFPVV6xBUFPiGKDyo5V3+Hbh4N9YSMB8GA1UdIwQYMBaAFPVV\n" \
+"6xBUFPiGKDyo5V3+Hbh4N9YSMA8GA1UdEwEB/wQFMAMBAf8wDQYJKoZIhvcNAQEL\n" \
+"BQADggEBAGa9kS21N70ThM6/Hj9D7mbVxKLBjVWe2TPsGfbl3rEDfZ+OKRZ2j6AC\n" \
+"6r7jb4TZO3dzF2p6dgbrlU71Y/4K0TdzIjRj3cQ3KSm41JvUQ0hZ/c04iGDg/xWf\n" \
+"+pp58nfPAYwuerruPNWmlStWAXf0UTqRtg4hQDWBuUFDJTuWuuBvEXudz74eh/wK\n" \
+"sMwfu1HFvjy5Z0iMDU8PUDepjVolOCue9ashlS4EB5IECdSR2TItnAIiIwimx839\n" \
+"LdUdRudafMu5T5Xma182OC0/u/xRlEm+tvKGGmfFcN0piqVl8OrSPBgIlb+1IKJE\n" \
+"m/XriWr/Cq4h/JfB7NTsezVslgkBaoU=\n" \
+"-----END CERTIFICATE-----\n";
+
+// Enable and configure these if you want client side certificates
+/*
+#define MQTT_TLS_KEY \
+"-----BEGIN RSA PRIVATE KEY-----\n" \
+"-----END RSA PRIVATE KEY-----";
+#define MQTT_TLS_CA \
+"-----BEGIN CERTIFICATE-----\n" \
+"-----END CERTIFICATE-----";
+*/
+
+#define MQTT_CLIENT_ID "PicoW Ledcontrol"
+//#define MQTT_CLIENT_USER ""
+//#define MQTT_CLIENT_PASS ""
+
+#endif