Example program for simple-mbed-client, connecting a device to mbed Device Connector.
Dependencies: C12832 FXOS8700Q simple-mbed-client
Fork of simple-mbed-client-example by
source/main.cpp
- Committer:
- MACRUM
- Date:
- 2017-04-16
- Revision:
- 45:cc5199df4b43
- Parent:
- 44:5a1db9f98f5f
File content as of revision 45:cc5199df4b43:
#include "mbed.h" #include "security.h" #include "easy-connect.h" #include "simple-mbed-client.h" #include "C12832.h" #include "FXOS8700Q.h" Serial pc(USBTX, USBRX); C12832 lcd(D11, D13, D12, D7, D10); I2C i2c(PTE25, PTE24); FXOS8700QAccelerometer acc(i2c, FXOS8700CQ_SLAVE_ADDR1); FXOS8700QMagnetometer mag(i2c, FXOS8700CQ_SLAVE_ADDR1); SimpleMbedClient client; // Declare peripherals DigitalOut connectivityLed(LED2); // Blinks while connecting, turns solid when connected DigitalOut augmentedLed(LED1, BUILTIN_LED_OFF); // LED that can be controlled through Connector InterruptIn btn(MBED_CONF_APP_BUTTON); // Button that sends it's count to Connector Ticker connectivityTicker; Ticker readAccelTicker; // Callback function when the pattern resource is updated void patternUpdated(string v) { pc.printf("New pattern: %s\n", v.c_str()); } void lcdTextUpdated(string v) { if (v.length() > 30) { v.erase(v.begin() + 30, v.end()); } pc.printf("New text is %s\r\n", v.c_str()); lcd.cls(); lcd.locate(0, 3); lcd.printf(v.c_str()); } // Define resources here. They act as normal variables, but are exposed to the internet... SimpleResourceInt btn_count = client.define_resource("button/0/clicks", 0, M2MBase::GET_ALLOWED); SimpleResourceString pattern = client.define_resource("led/0/pattern", "500:500:500:500:500:500:500", &patternUpdated); SimpleResourceString lcd_text = client.define_resource("lcd/0/text", "Hello from the cloud", M2MBase::GET_PUT_ALLOWED, true, &lcdTextUpdated); SimpleResourceInt aX = client.define_resource("accel/0/x", 0, M2MBase::GET_ALLOWED); SimpleResourceInt aY = client.define_resource("accel/0/y", 0, M2MBase::GET_ALLOWED); SimpleResourceInt aZ = client.define_resource("accel/0/z", 0, M2MBase::GET_ALLOWED); void readAccel() { motion_data_counts_t acc_data; acc.getAxis(acc_data); aX = acc_data.x; aY = acc_data.y; aZ = acc_data.z; pc.printf("ACC: X=%d Y=%d Z=%d\r\n", acc_data.x, acc_data.y, acc_data.z); } void fall() { btn_count = btn_count + 1; pc.printf("Button count is now %d\r\n", static_cast<int>(btn_count)); } void toggleConnectivityLed() { connectivityLed = !connectivityLed; } void registered() { pc.printf("Registered\r\n"); connectivityTicker.detach(); connectivityLed = BUILTIN_LED_ON; } void play(void* args) { connectivityLed = BUILTIN_LED_OFF; // Parse the pattern string, and toggle the LED in that pattern string s = static_cast<string>(pattern); 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; } } augmentedLed = BUILTIN_LED_OFF; connectivityLed = BUILTIN_LED_ON; } int main() { pc.baud(115200); lcdTextUpdated(static_cast<string>(lcd_text).c_str()); acc.enable(); // SimpleClient gives us an event queue which we can use, running on a separate thread (see https://docs.mbed.com/docs/mbed-os-handbook/en/5.1/concepts/events/) EventQueue* eventQueue = client.eventQueue(); // Handle interrupts on the eventQueue - so we don't do things in interrupt context btn.fall(eventQueue->event(&fall)); // Toggle the built-in LED every second (until we're connected, see `registered` function) connectivityTicker.attach(eventQueue->event(&toggleConnectivityLed), 1.0f); readAccelTicker.attach(eventQueue->event(&readAccel), 1.0f); // Functions can be executed through mbed Device Connector via POST calls (also defer to the event thread, so we never block) client.define_function("led/0/play", eventQueue->event(&play)); // Connect to the internet (see mbed_app.json for the connectivity method) NetworkInterface* network = easy_connect(true); if (!network) { return 1; } // Connect to mbed Device Connector struct MbedClientOptions opts = client.get_default_options(); // opts contains information like the DeviceType bool setup = client.setup(opts, network); if (!setup) { pc.printf("Client setup failed\n"); return 1; } client.on_registered(®istered); }