CUED IIA Project
Dependencies: BLE_API mbed nRF51822
Fork of BLE_GATT_Example by
Diff: main.cpp
- Revision:
- 24:baa43caa2f3d
- Parent:
- 23:708cc5ef2604
--- a/main.cpp Wed May 31 22:13:36 2017 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,140 +0,0 @@ -#include "mbed.h" -#include "ble/BLE.h" -#include "sensors.h" - - - -DigitalOut led(LED1); -uint16_t customServiceUUID = 0xABCD; -uint16_t readCharUUID = 0xABCE; -uint16_t writeCharUUID = 0xABCF; - -static volatile bool triggerSensorPolling = false; - - -const static char DEVICE_NAME[] = "WorkGloves"; // change this -static const uint16_t uuid16_list[] = {0xFFFF}; //Custom UUID, FFFF is reserved for development - -/* Set Up custom Characteristics */ -static uint16_t readValue[24] = {0x55, 0x33}; -ReadOnlyArrayGattCharacteristic<uint16_t, sizeof(readValue)> readChar(readCharUUID, readValue); - -static uint8_t writeValue[8] = {0x00}; -WriteOnlyArrayGattCharacteristic<uint8_t, sizeof(writeValue)> writeChar(writeCharUUID, writeValue); - - -/* Set up custom service */ -GattCharacteristic *characteristics[] = {&readChar, &writeChar}; -GattService customService(customServiceUUID, characteristics, sizeof(characteristics) / sizeof(GattCharacteristic *)); - -void dump(Datapacket todump) -{ - uint8_t j; - for (j=0; j<12; j++) - { - readValue[j]=todump.flex[j]; - } - for(j=12; j<18; j++) - { - readValue[j]=todump.acc[0][j%6]; - } - - for(j=18; j<24; j++) - { - readValue[j]=todump.acc[1][j%6]; - } - - - -} - - -/* - * Restart advertising when phone app disconnects - */ -void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *) -{ - BLE::Instance(BLE::DEFAULT_INSTANCE).gap().startAdvertising(); -} - -void periodicCallback(void) -{ - led = !led; /* Do blinky on LED1 while we're waiting for BLE events */ - - /* Note that the periodicCallback() executes in interrupt context, so it is safer to do - * heavy-weight sensor polling from the main thread. */ - triggerSensorPolling = true; -} - -/* - * Handle writes to writeCharacteristic for screen data from phone - */ -void writeCharCallback(const GattWriteCallbackParams *params) -{ - /* Check to see what characteristic was written, by handle */ - if(params->handle == writeChar.getValueHandle()) { - /* Update the readChar with the value of writeChar */ -// BLE::Instance(BLE::DEFAULT_INSTANCE).gattServer().write(readChar.getValueHandle(), params->data, params->len); - } -} -/* - * Initialization callback - */ -void bleInitComplete(BLE::InitializationCompleteCallbackContext *params) -{ - BLE &ble = params->ble; - ble_error_t error = params->error; - - if (error != BLE_ERROR_NONE) { - return; - } - - ble.gap().onDisconnection(disconnectionCallback); - ble.gattServer().onDataWritten(writeCharCallback); // TODO: update to flush screen !!! - - /* Setup advertising */ - ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); // BLE only, no classic BT - ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); // advertising type - ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); // add name - ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); // UUID's broadcast in advertising packet - ble.gap().setAdvertisingInterval(500); // 500ms. - - /* Add our custom service */ - ble.addService(customService); - - /* Start advertising */ - ble.gap().startAdvertising(); -} - -/* - * Main loop - */ -int main(void) -{ - /* initialize stuff */ -// printf("\n\r********* Starting Main Loop *********\n\r"); - - led = 1; - Ticker ticker; - ticker.attach(periodicCallback, 0.1); // blink LED every 0.5 second - BLE& ble = BLE::Instance(BLE::DEFAULT_INSTANCE); - ble.init(bleInitComplete); - - /* SpinWait for initialization to complete. This is necessary because the - * BLE object is used in the main loop below. */ - while (ble.hasInitialized() == false) { /* spin loop */ } - uint16_t data[24] = {0x11, 0x22}; - /* Infinite loop waiting for BLE interrupt events */ - while (1) { - // check for trigger// from periodicCallback() - if (triggerSensorPolling && ble.getGapState().connected) { - triggerSensorPolling = false; - data[1] = data[1]+1; - BLE::Instance(BLE::DEFAULT_INSTANCE).gattServer().write(readChar.getValueHandle(), (uint8_t*)data , 48 ); - - } - else { - ble.waitForEvent(); // low power wait for event - } - } -}