Initial support for ESP32
This commit is contained in:
Valeriy Koval
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.pioenvs
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.clang_complete
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.gcc-flags.json
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# Continuous Integration (CI) is the practice, in software
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# engineering, of merging all developer working copies with a shared mainline
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# several times a day < http://docs.platformio.org/en/stable/ci/index.html >
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#
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# Documentation:
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#
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# * Travis CI Embedded Builds with PlatformIO
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# < https://docs.travis-ci.com/user/integration/platformio/ >
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#
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# * PlatformIO integration with Travis CI
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# < http://docs.platformio.org/en/stable/ci/travis.html >
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#
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# * User Guide for `platformio ci` command
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# < http://docs.platformio.org/en/stable/userguide/cmd_ci.html >
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#
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#
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# Please choice one of the following templates (proposed below) and uncomment
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# it (remove "# " before each line) or use own configuration according to the
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# Travis CI documentation (see above).
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#
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#
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# Template #1: General project. Test it using existing `platformio.ini`.
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#
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# language: python
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# python:
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# - "2.7"
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#
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# sudo: false
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# cache:
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# directories:
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# - "~/.platformio"
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#
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# install:
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# - pip install -U platformio
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#
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# script:
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# - platformio run
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#
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# Template #2: The project is intended to by used as a library with examples
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#
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# language: python
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# python:
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# - "2.7"
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#
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# sudo: false
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# cache:
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# directories:
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# - "~/.platformio"
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#
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# env:
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# - PLATFORMIO_CI_SRC=path/to/test/file.c
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# - PLATFORMIO_CI_SRC=examples/file.ino
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# - PLATFORMIO_CI_SRC=path/to/test/directory
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#
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# install:
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# - pip install -U platformio
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#
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# script:
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# - platformio ci --lib="." --board=ID_1 --board=ID_2 --board=ID_N
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.. Copyright 2014-present PlatformIO <contact@platformio.org>
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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How to build PlatformIO based project
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=====================================
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1. `Install PlatformIO <http://docs.platformio.org/en/stable/installation.html>`_
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2. Download `development platform with examples <https://github.com/platformio/platform-espressif8266/archive/develop.zip>`_
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3. Extract ZIP archive
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4. Run these commands:
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.. code-block:: bash
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# Change directory to example
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> cd platform-espressif8266/examples/espidf-http-request
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# Process example project
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> platformio run
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# Upload firmware
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> platformio run --target upload
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This directory is intended for the project specific (private) libraries.
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PlatformIO will compile them to static libraries and link to executable file.
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The source code of each library should be placed in separate directory, like
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"lib/private_lib/[here are source files]".
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For example, see how can be organised `Foo` and `Bar` libraries:
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|--lib
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| |--Bar
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| | |--docs
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| | |--examples
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| | |--src
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| | |- Bar.c
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| | |- Bar.h
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| |--Foo
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| | |- Foo.c
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| | |- Foo.h
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| |- readme.txt --> THIS FILE
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|- platformio.ini
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|--src
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|- main.c
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Then in `src/main.c` you should use:
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#include <Foo.h>
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#include <Bar.h>
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// rest H/C/CPP code
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PlatformIO will find your libraries automatically, configure preprocessor's
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include paths and build them.
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See additional options for PlatformIO Library Dependency Finder `lib_*`:
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http://docs.platformio.org/en/stable/projectconf.html#lib-install
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; PlatformIO Project Configuration File
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;
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; Build options: build flags, source filter, extra scripting
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; Upload options: custom port, speed and extra flags
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; Library options: dependencies, extra library storages
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;
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; Please visit documentation for the other options and examples
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; http://docs.platformio.org/en/stable/projectconf.html
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[env:esp32]
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platform = espressif32
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framework = espidf
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board = esp32
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build_flags = -DCONFIG_WIFI_SSID=\"ESP_AP\" -DCONFIG_WIFI_PASSWORD=\"MYPASS\"
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/* HTTP GET Example using plain POSIX sockets
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This example code is in the Public Domain (or CC0 licensed, at your option.)
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Unless required by applicable law or agreed to in writing, this
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software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied.
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*/
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#include <string.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/event_groups.h"
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#include "esp_system.h"
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#include "esp_wifi.h"
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#include "esp_event_loop.h"
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#include "esp_log.h"
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#include "nvs_flash.h"
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#include "lwip/err.h"
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#include "lwip/sockets.h"
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#include "lwip/sys.h"
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#include "lwip/netdb.h"
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#include "lwip/dns.h"
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/* The examples use simple WiFi configuration that you can set via
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'make menuconfig'.
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If you'd rather not, just change the below entries to strings with
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the config you want - ie #define EXAMPLE_WIFI_SSID "mywifissid"
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*/
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#define EXAMPLE_WIFI_SSID CONFIG_WIFI_SSID
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#define EXAMPLE_WIFI_PASS CONFIG_WIFI_PASSWORD
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/* FreeRTOS event group to signal when we are connected & ready to make a request */
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static EventGroupHandle_t wifi_event_group;
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/* The event group allows multiple bits for each event,
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but we only care about one event - are we connected
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to the AP with an IP? */
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const int CONNECTED_BIT = BIT0;
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/* Constants that aren't configurable in menuconfig */
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#define WEB_SERVER "example.com"
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#define WEB_PORT 80
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#define WEB_URL "http://example.com/"
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static const char *TAG = "example";
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static const char *REQUEST = "GET " WEB_URL " HTTP/1.1\n"
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"Host: "WEB_SERVER"\n"
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"User-Agent: esp-idf/1.0 esp32\n"
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"\n";
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static esp_err_t event_handler(void *ctx, system_event_t *event)
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{
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switch(event->event_id) {
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case SYSTEM_EVENT_STA_START:
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esp_wifi_connect();
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break;
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case SYSTEM_EVENT_STA_GOT_IP:
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xEventGroupSetBits(wifi_event_group, CONNECTED_BIT);
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break;
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case SYSTEM_EVENT_STA_DISCONNECTED:
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/* This is a workaround as ESP32 WiFi libs don't currently
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auto-reassociate. */
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esp_wifi_connect();
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xEventGroupClearBits(wifi_event_group, CONNECTED_BIT);
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break;
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default:
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break;
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}
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return ESP_OK;
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}
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static void initialise_wifi(void)
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{
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tcpip_adapter_init();
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wifi_event_group = xEventGroupCreate();
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ESP_ERROR_CHECK( esp_event_loop_init(event_handler, NULL) );
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wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
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ESP_ERROR_CHECK( esp_wifi_init(&cfg) );
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ESP_ERROR_CHECK( esp_wifi_set_storage(WIFI_STORAGE_RAM) );
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wifi_config_t wifi_config = {
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.sta = {
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.ssid = EXAMPLE_WIFI_SSID,
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.password = EXAMPLE_WIFI_PASS,
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},
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};
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ESP_LOGI(TAG, "Setting WiFi configuration SSID %s...", wifi_config.sta.ssid);
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ESP_ERROR_CHECK( esp_wifi_set_mode(WIFI_MODE_STA) );
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ESP_ERROR_CHECK( esp_wifi_set_config(WIFI_IF_STA, &wifi_config) );
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ESP_ERROR_CHECK( esp_wifi_start() );
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}
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static void http_get_task(void *pvParameters)
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{
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const struct addrinfo hints = {
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.ai_family = AF_INET,
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.ai_socktype = SOCK_STREAM,
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};
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struct addrinfo *res;
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struct in_addr *addr;
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int s, r;
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char recv_buf[64];
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while(1) {
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/* Wait for the callback to set the CONNECTED_BIT in the
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event group.
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*/
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xEventGroupWaitBits(wifi_event_group, CONNECTED_BIT,
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false, true, portMAX_DELAY);
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ESP_LOGI(TAG, "Connected to AP");
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int err = getaddrinfo(WEB_SERVER, "80", &hints, &res);
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if(err != 0 || res == NULL) {
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ESP_LOGE(TAG, "DNS lookup failed err=%d res=%p", err, res);
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vTaskDelay(1000 / portTICK_RATE_MS);
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continue;
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}
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/* Code to print the resolved IP.
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Note: inet_ntoa is non-reentrant, look at ipaddr_ntoa_r for "real" code */
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addr = &((struct sockaddr_in *)res->ai_addr)->sin_addr;
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ESP_LOGI(TAG, "DNS lookup succeeded. IP=%s", inet_ntoa(*addr));
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s = socket(res->ai_family, res->ai_socktype, 0);
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if(s < 0) {
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ESP_LOGE(TAG, "... Failed to allocate socket.");
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freeaddrinfo(res);
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vTaskDelay(1000 / portTICK_RATE_MS);
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continue;
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}
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ESP_LOGI(TAG, "... allocated socket\r\n");
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if(connect(s, res->ai_addr, res->ai_addrlen) != 0) {
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ESP_LOGE(TAG, "... socket connect failed errno=%d", errno);
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close(s);
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freeaddrinfo(res);
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vTaskDelay(4000 / portTICK_RATE_MS);
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continue;
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}
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ESP_LOGI(TAG, "... connected");
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freeaddrinfo(res);
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if (write(s, REQUEST, strlen(REQUEST)) < 0) {
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ESP_LOGE(TAG, "... socket send failed");
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close(s);
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vTaskDelay(4000 / portTICK_RATE_MS);
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continue;
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}
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ESP_LOGI(TAG, "... socket send success");
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/* Read HTTP response */
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do {
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bzero(recv_buf, sizeof(recv_buf));
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r = read(s, recv_buf, sizeof(recv_buf)-1);
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for(int i = 0; i < r; i++) {
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putchar(recv_buf[i]);
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}
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} while(r > 0);
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ESP_LOGI(TAG, "... done reading from socket. Last read return=%d errno=%d\r\n", r, errno);
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close(s);
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for(int countdown = 10; countdown >= 0; countdown--) {
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ESP_LOGI(TAG, "%d... ", countdown);
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vTaskDelay(1000 / portTICK_RATE_MS);
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}
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ESP_LOGI(TAG, "Starting again!");
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}
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}
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void app_main()
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{
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nvs_flash_init();
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system_init();
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initialise_wifi();
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xTaskCreate(&http_get_task, "http_get_task", 2048, NULL, 5, NULL);
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}
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