pelion-example-common
Dependencies: ublox-at-cellular-interface ublox-cellular-base
Diff: main.cpp
- Revision:
- 6:2fb5057c0e42
- Parent:
- 3:3b2db67b206e
- Child:
- 7:230af466efc4
--- a/main.cpp Tue Dec 18 18:21:13 2018 +0000 +++ b/main.cpp Wed Feb 20 15:33:02 2019 +0000 @@ -22,10 +22,6 @@ #include "FATFileSystem.h" #include "LittleFileSystem.h" -// 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; - // Default network interface object. Don't forget to change the WiFi SSID/password in mbed_app.json if you're using WiFi. NetworkInterface *net = NetworkInterface::get_default_instance(); @@ -40,65 +36,54 @@ LittleFileSystem fs("fs", bd); #endif -// Fix for older versions of Mbed OS where BUTTON1 is undefined -#if TARGET_UBLOX_C030 -#define BUTTON1 PC_13 -#endif +#if USE_BUTTON == 1 +InterruptIn button(BUTTON1); +#endif /* USE_BUTTON */ -// Default User button for GET example -InterruptIn button(BUTTON1); // Default LED to use for PUT/POST example DigitalOut led(LED1); -// Currently disabled until ADC sensors are introduced for U-blox targets. -#ifdef ENABLE_SENSORS -// Default temperature reading from microcontroller -AnalogIn adc_temp(ADC_TEMP); -// Voltage reference from microcontroller -AnalogIn adc_vref(ADC_VREF); - -#define SENSORS_POLL_INTERVAL 1.0 -#endif /* ENABLE_SENSORS */ +// Declaring pointers for access to Pelion Device Management Client resources outside of main() +MbedCloudClientResource *button_res; +MbedCloudClientResource *led_res; +MbedCloudClientResource *post_res; -// Declaring pointers for access to Pelion Client resources outside of main() -MbedCloudClientResource *res_button; -MbedCloudClientResource *res_led; -#ifdef ENABLE_SENSORS -MbedCloudClientResource *res_temperature; -MbedCloudClientResource *res_voltage; -#endif /* ENABLE_SENSORS */ - -// When the device is registered, this variable will be used to access various useful information, like device ID etc. -static const ConnectorClientEndpointInfo* endpointInfo; +// 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; /** - * PUT handler + * PUT handler - sets the value of the built-in LED * @param resource The resource that triggered the callback * @param newValue Updated value for the resource */ -void led_put_callback(MbedCloudClientResource *resource, m2m::String newValue) { +void put_callback(MbedCloudClientResource *resource, m2m::String newValue) { printf("PUT received. New value: %s\n", newValue.c_str()); led = atoi(newValue.c_str()); } /** - * POST handler + * POST handler - prints the content of the payload * @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 led_post_callback(MbedCloudClientResource *resource, const uint8_t *buffer, uint16_t size) { - printf("POST received. Payload: %s\n", res_led->get_value().c_str()); - led = atoi(res_led->get_value().c_str()); +void post_callback(MbedCloudClientResource *resource, const uint8_t *buffer, uint16_t size) { + printf("POST received (length %u). Payload: ", size); + for (size_t ix = 0; ix < size; ix++) { + printf("%02x ", buffer[ix]); + } + printf("\n"); } /** - * Button function triggered by the physical button press. + * Button handler + * This function will be triggered either by a physical button press or by a ticker every 5 seconds (see below) */ void button_press() { - int v = res_button->get_value_int() + 1; - res_button->set_value(v); + int v = button_res->get_value_int() + 1; + button_res->set_value(v); printf("Button clicked %d times\n", v); } @@ -117,105 +102,62 @@ */ void registered(const ConnectorClientEndpointInfo *endpoint) { printf("Registered to Pelion Device Management. Endpoint Name: %s\n", endpoint->internal_endpoint_name.c_str()); - endpointInfo = endpoint; } -/** - * Update sensors and report their values. - * This function is called periodically. - */ -#ifdef ENABLE_SENSORS -void sensors_update() { - float temp = adc_temp.read()*100; - float vref = adc_vref.read(); - printf("ADC temp: %6.4f C, vref: %6.4f %%\r\n", temp, vref); - if (endpointInfo) { - res_temperature->set_value(temp); - res_voltage->set_value(vref); - } -} -#endif /* ENABLE_SENSORS */ - - int main(void) { printf("\nStarting Simple Pelion Device Management Client example\n"); +#if USE_BUTTON == 1 // If the User button is pressed ons start, then format storage. - DigitalIn *user_button = new DigitalIn(BUTTON1); - const int PRESSED = 1; - if (user_button->read() == PRESSED) { + if (button.read() == MBED_CONF_APP_BUTTON_PRESSED_STATE) { printf("User button is pushed on start. Formatting the storage...\n"); - int storage_status = fs.reformat(bd); - if (storage_status != 0) { - if (bd->erase(0, bd->size()) == 0) { - if (fs.format(bd) == 0) { - storage_status = 0; - printf("The storage reformatted successfully.\n"); - } - } - } + int storage_status = StorageHelper::format(&fs, bd); if (storage_status != 0) { printf("ERROR: Failed to reformat the storage (%d).\n", storage_status); } } else { printf("You can hold the user button during boot to format the storage and change the device identity.\n"); } +#endif /* USE_BUTTON */ - // Connect to the internet (DHCP is expected to be on) - printf("Connecting to the network using default network interface...\n"); + // Connect to the Internet (DHCP is expected to be on) + printf("Connecting to the network using the default network interface...\n"); net = NetworkInterface::get_default_instance(); - nsapi_error_t net_status = -1; - for (int tries = 0; tries < 3; tries++) { - net_status = net->connect(); - if (net_status == NSAPI_ERROR_OK) { - break; - } else { - printf("Unable to connect to network. Retrying...\n"); - } - } - - if (net_status != NSAPI_ERROR_OK) { - printf("ERROR: Connecting to the network failed (%d)!\n", net_status); - return -1; + nsapi_error_t net_status = NSAPI_ERROR_NO_CONNECTION; + while ((net_status = net->connect()) != NSAPI_ERROR_OK) { + printf("Unable to connect to network (%d). Retrying...\n", net_status); } printf("Connected to the network successfully. IP address: %s\n", net->get_ip_address()); - // SimpleMbedCloudClient handles registering over LwM2M to Pelion DM + printf("Initializing Pelion Device Management Client...\n"); + + // SimpleMbedCloudClient handles registering over LwM2M to Pelion Device Management SimpleMbedCloudClient client(net, bd, &fs); int client_status = client.init(); if (client_status != 0) { - printf("ERROR: Pelion Client initialization failed (%d)\n", client_status); + printf("Pelion Client initialization failed (%d)\n", client_status); return -1; } // Creating resources, which can be written or read from the cloud - res_button = client.create_resource("3200/0/5501", "button_count"); - res_button->set_value(0); - res_button->methods(M2MMethod::GET); - res_button->observable(true); - res_button->attach_notification_callback(button_callback); - - res_led = client.create_resource("3201/0/5853", "led_state"); - res_led->set_value(1); - res_led->methods(M2MMethod::GET | M2MMethod::PUT); - res_led->attach_put_callback(led_put_callback); + 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); -#ifdef ENABLE_SENSORS - // Sensor resources - res_temperature = client.create_resource("3303/0/5700", "temperature"); - res_temperature->set_value(0); - res_temperature->methods(M2MMethod::GET); - res_temperature->observable(true); + led_res = client.create_resource("3201/0/5853", "led_state"); + led_res->set_value(led.read()); + led_res->methods(M2MMethod::GET | M2MMethod::PUT); + led_res->attach_put_callback(put_callback); - res_voltage = client.create_resource("3316/0/5700", "voltage"); - res_voltage->set_value(0); - res_voltage->methods(M2MMethod::GET); - res_voltage->observable(true); -#endif /* ENABLE_SENSORS */ + post_res = client.create_resource("3300/0/5605", "execute_function"); + post_res->methods(M2MMethod::POST); + post_res->attach_post_callback(post_callback); - printf("Initialized Pelion Client. Registering...\n"); + printf("Initialized Pelion Device Management Client. Registering...\n"); // Callback that fires when registering is complete client.on_registered(®istered); @@ -223,21 +165,19 @@ // Register with Pelion DM client.register_and_connect(); - int i = 600; // wait up 60 seconds before attaching sensors and button events - while (i-- > 0 && !client.is_client_registered()) { - wait_ms(100); - } - +#if USE_BUTTON == 1 + // The button fires on an interrupt context, but debounces it to the eventqueue, so it's safe to do network operations button.fall(eventQueue.event(&button_press)); printf("Press the user button to increment the LwM2M resource value...\n"); - -#ifdef ENABLE_SENSORS +#else // 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(&sensors_update), SENSORS_POLL_INTERVAL); -#endif /* ENABLE_SENSORS */ + timer.attach(eventQueue.event(&button_press), 5.0); + printf("Simulating button press every 5 seconds...\n"); +#endif /* USE_BUTTON */ // You can easily run the eventQueue in a separate thread if required eventQueue.dispatch_forever(); } -#endif + +#endif /* MBED_TEST_MODE */