Simple Mbed Cloud client application using features of K64F including Wi-Fi and SD Card
Fork of mbed-cloud-connect-example-ethernet by
Configuration
- Put ESP-WROOM-02 shield
- Put Mbed Application Shield
- Edit the text in the main.cpp
#define WIFI_SSID "SSID" #define WIFI_PSWD "PASSWORD"
- Download and replace your developer certificate from Mbed Cloud portal from the menu [Mbed Cloud] - [Certificate]
main.cpp
- Committer:
- MACRUM
- Date:
- 2018-07-03
- Revision:
- 19:999d13f83602
- Parent:
- 18:139960a75894
File content as of revision 19:999d13f83602:
// ---------------------------------------------------------------------------- // 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 "simple-mbed-cloud-client.h" #include "SDBlockDevice.h" #include "FATFileSystem.h" #include "ESP8266Interface.h" #include "MMA7660.h" #include "LM75B.h" #define WIFI_SSID "SSID" #define WIFI_PSWD "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; Thread thread1; // Storage implementation definition, currently using SDBlockDevice (SPI flash, DataFlash, and internal flash are also available) /* K64 & K66 */ InterruptIn sw2(SW2); DigitalOut led2(LED2); SDBlockDevice sd(PTE3, PTE1, PTE2, PTE4); FATFileSystem fs("sd", &sd); ESP8266Interface net(D1, D0); LM75B lm75b(I2C_SDA, I2C_SCL); // temperature MMA7660 mma7660(I2C_SDA, I2C_SCL); // accel const int NUM_AXIS = 3; // Declaring pointers for access to Mbed Cloud Client resources outside of main() MbedCloudClientResource *button_res; MbedCloudClientResource *pattern_res; MbedCloudClientResource *temp_res; MbedCloudClientResource *temp_unit_res; MbedCloudClientResource *accel_res[NUM_AXIS]; MbedCloudClientResource *acc_unit_res; static bool button_pressed = false; static int button_count = 0; void button_press() { button_pressed = true; ++button_count; button_res->set_value(button_count); } /** * 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); } void temp_callback(MbedCloudClientResource *resource, const NoticationDeliveryStatus status) { printf("Temperature notification, status %s (%d)\n", MbedCloudClientResource::delivery_status_to_string(status), status); } void accel_callback(MbedCloudClientResource *resource, const NoticationDeliveryStatus status) { printf("Accelerometer notification, status %s (%d)\n", MbedCloudClientResource::delivery_status_to_string(status), status); } void measure_sensors() { float temperature, acc[3]; const unsigned int buf_size = 20; char buf[buf_size]; mma7660.readData(acc); for(int i=0; i < NUM_AXIS; i++) { snprintf(buf, buf_size, "%f", acc[i]); accel_res[i]->set_value(buf); } printf("acc: %f,%f,%f\n", acc[0], acc[1], acc[2]); temperature = lm75b.read(); snprintf(buf, buf_size, "%f", temperature); temp_res->set_value(buf); printf("temp: %s\n", buf); } /** * 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("Connecting to the network using Wi-Fi...\n"); // Connect to the internet (DHCP is expected to be on) nsapi_error_t status = net.connect(WIFI_SSID, WIFI_PSWD, NSAPI_SECURITY_WPA_WPA2); 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); temp_res = client.create_resource("3303/0/5700", "temperature"); temp_res->set_value("0"); temp_res->methods(M2MMethod::GET); temp_res->attach_notification_callback(temp_callback); temp_res->observable(true); temp_unit_res = client.create_resource("3303/0/5701", "unit"); temp_unit_res->set_value("Cel"); accel_res[0] = client.create_resource("3313/0/5702", "accel_x"); accel_res[1] = client.create_resource("3313/0/5703", "accel_y"); accel_res[2] = client.create_resource("3313/0/5704", "accel_z"); for (int i=0; i < NUM_AXIS; i++) { accel_res[i]->set_value(0); accel_res[i]->methods(M2MMethod::GET); accel_res[i]->attach_notification_callback(accel_callback); accel_res[i]->observable(true); } acc_unit_res = client.create_resource("3313/0/5701", "unit"); acc_unit_res->set_value("G"); 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(); // Setup the button sw2.mode(PullUp); // The button fall handler is placed in the event queue so it will run in // thread context instead of ISR context, which allows safely updating the cloud resource sw2.fall(eventQueue.event(&button_press)); button_count = 0; // 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(&measure_sensors), 5.0); // Start the event queue in a separate thread so the main thread continues thread1.start(callback(&eventQueue, &EventQueue::dispatch_forever)); while(1) { wait_ms(100); if (button_pressed) { button_pressed = false; printf("button clicked %d times\r\n", button_count); } } }