Jim Carver
/
mbed-cloud-workshop-connect
Fork for workshops
Diff: main.cpp
- Revision:
- 0:6b753f761943
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Fri Oct 12 21:22:49 2018 +0000 @@ -0,0 +1,199 @@ +// ---------------------------------------------------------------------------- +// Copyright 2016-2018 ARM Ltd. +// +// SPDX-License-Identifier: Apache-2.0 +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. +// ---------------------------------------------------------------------------- + +#include "mbed.h" +#include <stdio.h> +#include <errno.h> + +#include "qspi_api.h" +#include "QSPI.h" +#include "qspi-blockdevice/QSPIFBlockDevice.h" +#define DEVICE_QSPI + +#include "FATFileSystem.h" +#include "LittleFileSystem.h" +#include "simple-mbed-cloud-client.h" +// #include "SDBlockDevice.h" +#include "ISM43362Interface.h" +// #include "SPIFBlockDevice.h" // to use onboard spi flash + +#define WIFI_SSID "mbed" +#define WIFI_PASSWORD "workshop-password" + + + + +// An event queue is a very useful structure to debounce information between contexts (e.g. ISR and normal threads) +// This is great because things such as network operations are illegal in ISR, so updating a resource in a button's fall() function is not allowed +EventQueue eventQueue; + +// Declaring net interface as a global variable instead of local to avoid stack overflow +ISM43362Interface net; + +// Storage implementation definition, currently using SDBlockDevice (SPI flash, DataFlash, and internal flash are also available) +// SDBlockDevice sd(SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS); +QSPIFBlockDevice sd(PE_12, PE_13, PE_14, PE_15,PE_10,PE_11,0,8000000); + +// FATFileSystem fs("sd", &bd); + +LittleFileSystem fs("sd"); + +// Declaring pointers for access to Mbed Cloud Client resources outside of main() +MbedCloudClientResource *button_res; +MbedCloudClientResource *pattern_res; + +// This function gets triggered by the timer. It's easy to replace it by an InterruptIn and fall() mode on a real button +void fake_button_press() { + int v = button_res->get_value_int() + 1; + + button_res->set_value(v); + + printf("Simulated button clicked %d times\n", v); +} + +/** + * PUT handler + * @param resource The resource that triggered the callback + * @param newValue Updated value for the resource + */ +void pattern_updated(MbedCloudClientResource *resource, m2m::String newValue) { + printf("PUT received, new value: %s\n", newValue.c_str()); +} + +/** + * POST handler + * @param resource The resource that triggered the callback + * @param buffer If a body was passed to the POST function, this contains the data. + * Note that the buffer is deallocated after leaving this function, so copy it if you need it longer. + * @param size Size of the body + */ +void blink_callback(MbedCloudClientResource *resource, const uint8_t *buffer, uint16_t size) { + printf("POST received. Going to blink LED pattern: %s\n", pattern_res->get_value().c_str()); + + static DigitalOut augmentedLed(LED1); // LED that is used for blinking the pattern + + // Parse the pattern string, and toggle the LED in that pattern + string s = std::string(pattern_res->get_value().c_str()); + size_t i = 0; + size_t pos = s.find(':'); + while (pos != string::npos) { + wait_ms(atoi(s.substr(i, pos - i).c_str())); + augmentedLed = !augmentedLed; + + i = ++pos; + pos = s.find(':', pos); + + if (pos == string::npos) { + wait_ms(atoi(s.substr(i, s.length()).c_str())); + augmentedLed = !augmentedLed; + } + } +} + +/** + * Notification callback handler + * @param resource The resource that triggered the callback + * @param status The delivery status of the notification + */ +void button_callback(MbedCloudClientResource *resource, const NoticationDeliveryStatus status) { + printf("Button notification, status %s (%d)\n", MbedCloudClientResource::delivery_status_to_string(status), status); +} + +/** + * Registration callback handler + * @param endpoint Information about the registered endpoint such as the name (so you can find it back in portal) + */ +void registered(const ConnectorClientEndpointInfo *endpoint) { + printf("Connected to Mbed Cloud. Endpoint Name: %s\n", endpoint->internal_endpoint_name.c_str()); +} + +int main(void) { + printf("Starting Simple Mbed Cloud Client example\n"); + + printf("Checking SDCard is Formatted\r\n"); + int err = fs.mount(&sd); + printf("%s\n", (err ? "Fail :(" : "OK")); + if (err) { + // Reformat if we can't mount the filesystem + // this should only happen on the first boot + printf("No filesystem found, formatting... "); + fflush(stdout); + err = fs.reformat(&sd); + printf("%s\n", (err ? "Fail :(" : "OK")); + if (err) { + error("error: %s (%d)\n", strerror(-err), err); + } + } + // err = fs.unmount(); + // printf("%s\n", (err < 0 ? "Fail :(" : "OK")); + // if (err < 0) { + // error("error: %s (%d)\n", strerror(-err), err); + // } + + printf("Connecting to the network using Wifi...\n"); + + // Connect to the internet (DHCP is expected to be on) + nsapi_error_t status = net.connect(WIFI_SSID, WIFI_PASSWORD, (strlen(WIFI_PASSWORD) > 1) ? NSAPI_SECURITY_WPA_WPA2 : NSAPI_SECURITY_NONE); + + if (status != 0) { + printf("Connecting to the network failed %d!\n", status); + return -1; + } + + printf("Connected to the network successfully. IP address: %s\n", net.get_ip_address()); + + // SimpleMbedCloudClient handles registering over LwM2M to Mbed Cloud + SimpleMbedCloudClient client(&net, &sd, &fs); + int client_status = client.init(); + if (client_status != 0) { + printf("Initializing Mbed Cloud Client failed (%d)\n", client_status); + return -1; + } + + // Creating resources, which can be written or read from the cloud + button_res = client.create_resource("3200/0/5501", "button_count"); + button_res->set_value(0); + button_res->methods(M2MMethod::GET); + button_res->observable(true); + button_res->attach_notification_callback(button_callback); + + pattern_res = client.create_resource("3201/0/5853", "blink_pattern"); + pattern_res->set_value("500:500:500:500:500:500:500:500"); + pattern_res->methods(M2MMethod::GET | M2MMethod::PUT); + pattern_res->attach_put_callback(pattern_updated); + + MbedCloudClientResource *blink_res = client.create_resource("3201/0/5850", "blink_action"); + blink_res->methods(M2MMethod::POST); + blink_res->attach_post_callback(blink_callback); + + printf("Initialized Mbed Cloud Client. Registering...\n"); + + // Callback that fires when registering is complete + client.on_registered(®istered); + + // Register with Mbed Cloud + client.register_and_connect(); + + // Placeholder for callback to update local resource when GET comes. + // The timer fires on an interrupt context, but debounces it to the eventqueue, so it's safe to do network operations + Ticker timer; + timer.attach(eventQueue.event(&fake_button_press), 5.0); + + // You can easily run the eventQueue in a separate thread if required + eventQueue.dispatch_forever(); +}