Josh Stroud
/
nrf51-evoTest
Example with mbed, ble, and evothings app
Fork of HelloWorld by
Revision 2:3015a85eb00a, committed 2016-03-15
- Comitter:
- jstroud
- Date:
- Tue Mar 15 03:17:05 2016 +0000
- Parent:
- 1:03c191369089
- Commit message:
- First commit, works, for Jacob
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/BLE_API.lib Tue Mar 15 03:17:05 2016 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/teams/Bluetooth-Low-Energy/code/BLE_API/#ff83f0020480
--- a/main.cpp Sun Jan 01 20:57:57 2012 +0000 +++ b/main.cpp Tue Mar 15 03:17:05 2016 +0000 @@ -1,12 +1,224 @@ +/* + * nRF51-DK BLEDevice service/characteristic (read/write) using mbed.org + */ + +// uncomment if not interested in a console log +#define CONSOLE_LOG + #include "mbed.h" +#include "BLE.h" + +//------------------------------------------------------------------------- + +#ifdef CONSOLE_LOG +#define INFO(x, ...) printf(x, ##__VA_ARGS__); +#define INFO_NL(x, ...) printf(x "\r\n", ##__VA_ARGS__); +#else +#define INFO(x, ...) +#define INFO_NL(x, ...) +#endif -DigitalOut myled(LED1); +// a little routine to print a 128-bit UUID nicely +void INFO_UUID(const char *prefix, UUID uuid) +{ + uint8_t *p = (uint8_t *)uuid.getBaseUUID(); + INFO("%s: ", prefix); + for (int i=0; i<16; i++) + { + INFO("%02x", p[i]); + if ((i == 3) || (i == 5) || (i == 7) || (i == 9)) INFO("-"); + } + INFO_NL(""); +} + +//------------------------------------------------------------------------- + +// name of the device +const static char DEVICE_NAME[] = "nRF51-DK"; + +// GATT service and characteristic UUIDs +const UUID nRF51_GATT_SERVICE = UUID((uint8_t *)"nRF51-DK "); +const UUID nRF51_GATT_CHAR_BUTTON = UUID((uint8_t *)"nRF51-DK button "); +const UUID nRF51_GATT_CHAR_LED = UUID((uint8_t *)"nRF51-DK led "); -int main() { - while(1) { - myled = 1; - wait(0.2); - myled = 0; - wait(0.2); +#define CHARACTERISTIC_BUTTON 0 +#define CHARACTERISTIC_LED 1 +#define CHARACTERISTIC_COUNT 2 + +// our bluetooth smart objects +BLEDevice ble; +GattService *gatt_service; +GattCharacteristic *gatt_characteristics[CHARACTERISTIC_COUNT]; +uint8_t gatt_char_value[CHARACTERISTIC_COUNT]; + +#ifdef CONSOLE_LOG +Serial pc(USBTX,USBRX); +#endif + +//------------------------------------------------------------------------- +// button handling +//------------------------------------------------------------------------- + +// define our digital in values we will be using for the characteristic +DigitalIn button1(P0_17); +DigitalIn button2(P0_18); +DigitalIn button3(P0_19); +DigitalIn button4(P0_20); + +uint8_t button_new_value = 0; +uint8_t button_old_value = button_new_value; + +void monitorButtons() +{ + // read in the buttons, mapped into nibble (0000 = all off, 1111 = all on) + button_new_value = 0; + button_new_value |= (button1.read() != 1); button_new_value <<= 1; + button_new_value |= (button2.read() != 1); button_new_value <<= 1; + button_new_value |= (button3.read() != 1); button_new_value <<= 1; + button_new_value |= (button4.read() != 1); + + // set the updated value of the characteristic if data has changed + if (button_new_value != button_old_value) + { + ble.updateCharacteristicValue( + gatt_characteristics[CHARACTERISTIC_BUTTON] -> getValueHandle(), + &button_new_value, sizeof(button_new_value)); + button_old_value = button_new_value; + + INFO_NL(" button state: [0x%02x]", button_new_value); } } + +//------------------------------------------------------------------------- +// LED handling +//------------------------------------------------------------------------- + +DigitalOut led1(P0_21); +DigitalOut led2(P0_22); +DigitalOut led3(P0_23); +DigitalOut led4(P0_24); + +uint8_t led_value = 0; + +void onLedDataWritten(const uint8_t* value, uint8_t length) +{ + // we only care about a single byte + led_value = value[0]; + + // depending on the value coming through; set/unset LED's + if ((led_value & 0x01) != 0) led1.write(0); else led1.write(1); + if ((led_value & 0x02) != 0) led2.write(0); else led2.write(1); + if ((led_value & 0x04) != 0) led3.write(0); else led3.write(1); + if ((led_value & 0x08) != 0) led4.write(0); else led4.write(1); + + INFO_NL(" led state: [0x%02x]", led_value); +} + +//------------------------------------------------------------------------- + +void onConnection(const Gap::ConnectionCallbackParams_t *params) +{ + INFO_NL(">> connected"); + + // set the initial values of the characteristics (for every session) + led_value = 0; + onLedDataWritten(&led_value, 1); // force LED's to be in off state +} + +void onDataWritten(const GattWriteCallbackParams *context) +{ + // was the characteristic being written to nRF51_GATT_CHAR_LED? + if (context -> handle == + gatt_characteristics[CHARACTERISTIC_LED] -> getValueHandle()) + { + onLedDataWritten(context -> data, context -> len); + } +} + +void onDisconnection(Gap::Handle_t handle, + Gap::DisconnectionReason_t disconnectReason) +{ + INFO_NL(">> disconnected"); + ble.startAdvertising(); + INFO_NL(">> device advertising"); +} + +int main() +{ +#ifdef CONSOLE_LOG + // wait a second before trying to write something to console + wait(1); +#endif + INFO_NL(">> nRF51-DK start"); + + // create our button characteristic (read, notify) + gatt_characteristics[CHARACTERISTIC_BUTTON] = + new GattCharacteristic( + nRF51_GATT_CHAR_BUTTON, + &gatt_char_value[CHARACTERISTIC_BUTTON], 1, 1, + GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | + GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY); + + // create our LED characteristic (read, write) + gatt_characteristics[CHARACTERISTIC_LED] = + new GattCharacteristic( + nRF51_GATT_CHAR_LED, + &gatt_char_value[CHARACTERISTIC_LED], 1, 1, + GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | + GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE | + GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE_WITHOUT_RESPONSE); + + // create our service, with both characteristics + gatt_service = + new GattService(nRF51_GATT_SERVICE, + gatt_characteristics, CHARACTERISTIC_COUNT); + + // initialize our ble device + ble.init(); + ble.setDeviceName((uint8_t *)DEVICE_NAME); + INFO_NL(">> initialized device '%s'", DEVICE_NAME); + + // configure our advertising type, payload and interval + ble.accumulateAdvertisingPayload( + GapAdvertisingData::BREDR_NOT_SUPPORTED | + GapAdvertisingData::LE_GENERAL_DISCOVERABLE); + ble.accumulateAdvertisingPayload( + GapAdvertisingData::COMPLETE_LOCAL_NAME, + (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); + ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); + ble.setAdvertisingInterval(160); // 100ms + INFO_NL(">> configured advertising type, payload and interval"); + + // configure our callbacks + //ble.onDisconnection(onDisconnection); + ble.onConnection(onConnection); + ble.onDataWritten(onDataWritten); + INFO_NL(">> registered for callbacks"); + + // add our gatt service with two characteristics + ble.addService(*gatt_service); + INFO_NL(">> added GATT service with two characteristics"); + + // show some debugging information about service/characteristics + INFO_UUID(" ", nRF51_GATT_SERVICE); + INFO_UUID(" :", nRF51_GATT_CHAR_BUTTON); + INFO_UUID(" :", nRF51_GATT_CHAR_LED); + + // start advertising + ble.startAdvertising(); + INFO_NL(">> device advertising"); + + // start monitoring the buttons and posting new values + Ticker ticker; + ticker.attach(monitorButtons, 0.1); // every 10th of a second + INFO_NL(">> monitoring button state"); + + // let the device do its thing + INFO_NL(">> waiting for events "); + for (;;) + { + ble.waitForEvent(); + } +} + +//-------------------------------------------------------------------------
--- a/mbed.bld Sun Jan 01 20:57:57 2012 +0000 +++ b/mbed.bld Tue Mar 15 03:17:05 2016 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/mbed_official/code/mbed/builds/078e4b97a13e +http://mbed.org/users/mbed_official/code/mbed/builds/87f2f5183dfb \ No newline at end of file