Health Thermometer example for Switch Science mbed TY51822r3
Dependencies: BLE_API TMP102 mbed nRF51822
Revision 0:b13cc82daed9, committed 2016-02-07
- Comitter:
- ytsuboi
- Date:
- Sun Feb 07 12:23:57 2016 +0000
- Commit message:
- first commit
Changed in this revision
diff -r 000000000000 -r b13cc82daed9 BLE_API.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/BLE_API.lib Sun Feb 07 12:23:57 2016 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/teams/Bluetooth-Low-Energy/code/BLE_API/#bfc5b9b6ecf5
diff -r 000000000000 -r b13cc82daed9 TMP102.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TMP102.lib Sun Feb 07 12:23:57 2016 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/chris/code/TMP102/#694792b93731
diff -r 000000000000 -r b13cc82daed9 main.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Sun Feb 07 12:23:57 2016 +0000 @@ -0,0 +1,160 @@ +#include "mbed.h" +#include "TMP102.h" +#include "BLE.h" + +#define NEED_CONSOLE_OUTPUT 1 /* Set this if you need debug messages on the console; + * it will have an impact on code-size and power consumption. */ + +#if NEED_CONSOLE_OUTPUT +Serial pc(USBTX, USBRX); +#define DEBUG(...) { pc.printf(__VA_ARGS__); } +#else +#define DEBUG(...) /* nothing */ +#endif /* #if NEED_CONSOLE_OUTPUT */ + +const static char DEVICE_NAME[] = "TY51822R3_HTM"; +static volatile bool triggerSensorPolling = false; + +BLEDevice ble; +TMP102 healthThemometer(I2C_SDA0, I2C_SCL0, 0x90); /* The TMP102 connected to our board */ +//TMP102 healthThemometer(I2C_SDA1, I2C_SCL1, 0x90); /* The TMP102 connected to our board */ + +/* LEDs for indication: */ +DigitalOut oneSecondLed(LED1); /* LED1 is toggled every second. */ +DigitalOut advertisingStateLed(LED2); /* LED2 is on when we are advertising, otherwise off. */ + + +/* Health Thermometer Service */ +uint8_t thermTempPayload[5] = { 0, 0, 0, 0, 0 }; + +GattCharacteristic tempChar (GattCharacteristic::UUID_TEMPERATURE_MEASUREMENT_CHAR, + thermTempPayload, 5, 5, + GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_INDICATE); +/* Battery Level Service */ +uint8_t batt = 100; /* Battery level */ +uint8_t read_batt = 0; /* Variable to hold battery level reads */ +GattCharacteristic battLevel ( GattCharacteristic::UUID_BATTERY_LEVEL_CHAR, + (uint8_t *)batt, 1, 1, + GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY); +GattCharacteristic *htmChars[] = {&tempChar, }; +GattCharacteristic *battChars[] = {&battLevel, }; +GattService htmService(GattService::UUID_HEALTH_THERMOMETER_SERVICE, htmChars, + sizeof(htmChars) / sizeof(GattCharacteristic *)); +GattService battService(GattService::UUID_BATTERY_SERVICE, battChars, + sizeof(battChars) / sizeof(GattCharacteristic *)); + +uint16_t uuid16_list[] = {GattService::UUID_HEALTH_THERMOMETER_SERVICE, + GattService::UUID_BATTERY_SERVICE}; + +uint32_t quick_ieee11073_from_float(float temperature); +void updateServiceValues(void); + +static Gap::ConnectionParams_t connectionParams; + +void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params) // Mod +{ + advertisingStateLed = 1; + + DEBUG("Disconnected handle %u, reason %u\r\n", params->handle, params->reason); + DEBUG("Restarting the advertising process\r\n"); + ble.gap().startAdvertising(); +} + +void onConnectionCallback(const Gap::ConnectionCallbackParams_t *params) //Mod +{ + advertisingStateLed = 0; + + DEBUG("connected. Got handle %u\r\n", params->handle); + + connectionParams.slaveLatency = 1; + if (ble.gap().updateConnectionParams(params->handle, &connectionParams) != BLE_ERROR_NONE) { + DEBUG("failed to update connection paramter\r\n"); + } +} + +void periodicCallback(void) +{ + oneSecondLed = !oneSecondLed; /* 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; +} + +/**************************************************************************/ +/*! + @brief Program entry point +*/ +/**************************************************************************/ +int main(void) +{ + + /* Setup blinky led */ + oneSecondLed = 1; + Ticker ticker; + ticker.attach(periodicCallback, 1); + + DEBUG("Initialising the nRF51822\r\n"); + ble.init(); + DEBUG("Init done\r\n"); + ble.gap().onDisconnection(disconnectionCallback); + ble.gap().onConnection(onConnectionCallback); + + ble.gap().getPreferredConnectionParams(&connectionParams); + + /* setup advertising */ + ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); + ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t*)uuid16_list, sizeof(uuid16_list)); + ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_THERMOMETER); + ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); + ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); + ble.gap().setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */ + ble.gap().startAdvertising(); + advertisingStateLed = 1; + DEBUG("Start Advertising\r\n"); + + ble.gattServer().addService(htmService); + ble.gattServer().addService(battService); + DEBUG("Add Service\r\n"); + + while (true) { + if (triggerSensorPolling) { + triggerSensorPolling = false; + updateServiceValues(); + } else { + ble.waitForEvent(); + } + } +} + +/**************************************************************************/ +/*! + @brief Ticker callback to switch advertisingStateLed state +*/ +/**************************************************************************/ +void updateServiceValues(void) +{ + /* Decrement the battery level. */ + batt <=50 ? batt=100 : batt--; + + /* Update the temperature. Note that we need to convert to an ieee11073 format float. */ + float temperature = healthThemometer.read(); + DEBUG("temp:%f\r\n", temperature); + uint32_t temp_ieee11073 = quick_ieee11073_from_float(temperature); + memcpy(thermTempPayload+1, &temp_ieee11073, 4); + ble.gattServer().write(tempChar.getValueAttribute().getHandle(), thermTempPayload, sizeof(thermTempPayload)); //Mod + ble.gattServer().write(battLevel.getValueAttribute().getHandle(), (uint8_t *)&batt, sizeof(batt)); //Mod +} + +/** + * @brief A very quick conversion between a float temperature and 11073-20601 FLOAT-Type. + * @param temperature The temperature as a float. + * @return The temperature in 11073-20601 FLOAT-Type format. + */ +uint32_t quick_ieee11073_from_float(float temperature) +{ + uint8_t exponent = 0xFF; //exponent is -1 + uint32_t mantissa = (uint32_t)(temperature*10); + + return ( ((uint32_t)exponent) << 24) | mantissa; +}
diff -r 000000000000 -r b13cc82daed9 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Sun Feb 07 12:23:57 2016 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/f141b2784e32 \ No newline at end of file
diff -r 000000000000 -r b13cc82daed9 nRF51822.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/nRF51822.lib Sun Feb 07 12:23:57 2016 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/teams/Nordic-Semiconductor/code/nRF51822/#3cc0718d98d0