Ken Todotani
BLE_Health_Thermometer for mbed HRM1017 with new library
Dependencies: BLE_API TMP102 mbed nRF51822
Revision 0:5e4210d108ac, committed 2014-08-22
- Comitter:
- todotani
- Date:
- Fri Aug 22 11:27:32 2014 +0000
- Child:
- 1:50056f53e2ac
- Commit message:
- BLE_Health_Thermometer for mbed HRM1017 with new library
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/BLE_API.lib Fri Aug 22 11:27:32 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/teams/Bluetooth-Low-Energy/code/BLE_API/#189ff241dae1
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TMP102.lib Fri Aug 22 11:27:32 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/chris/code/TMP102/#694792b93731
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Fri Aug 22 11:27:32 2014 +0000
@@ -0,0 +1,148 @@
+#include "mbed.h"
+#include "TMP102.h"
+#include "BLEDevice.h"
+#include "ble_hts.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[] = "HRM1017_HTM";
+
+BLEDevice ble;
+TMP102 healthThemometer(p22, p20, 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(Gap::Handle_t handle)
+{
+ advertisingStateLed = 1;
+
+ DEBUG("Disconnected handle %u!\n\r", handle);
+ DEBUG("Restarting the advertising process\n\r");
+ ble.startAdvertising();
+}
+
+void onConnectionCallback(Gap::Handle_t handle)
+{
+ advertisingStateLed = 0;
+
+ DEBUG("connected. Got handle %u\r\n", handle);
+
+ connectionParams.slaveLatency = 1;
+ if (ble.updateConnectionParams(handle, &connectionParams) != BLE_ERROR_NONE) {
+ DEBUG("failed to update connection paramter\r\n");
+ }
+}
+
+/**************************************************************************/
+/*!
+ @brief Program entry point
+*/
+/**************************************************************************/
+int main(void)
+{
+
+ /* Setup blinky led */
+ oneSecondLed = 1;
+
+ DEBUG("Initialising the nRF51822\n\r");
+ ble.init();
+ ble.onDisconnection(disconnectionCallback);
+ ble.onConnection(onConnectionCallback);
+
+ ble.getPreferredConnectionParams(&connectionParams);
+
+ /* setup advertising */
+ ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
+ ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t*)uuid16_list, sizeof(uuid16_list));
+ ble.accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_THERMOMETER);
+ ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
+ ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
+ ble.setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */
+ ble.startAdvertising();
+ advertisingStateLed = 1;
+
+ ble.addService(htmService);
+ ble.addService(battService);
+
+ for (;;)
+ {
+ /* Now that we're live, update the battery level & temperature characteristics */
+ updateServiceValues();
+ wait(1);
+ ble.waitForEvent();
+ }
+}
+
+/**************************************************************************/
+/*!
+ @brief Ticker callback to switch advertisingStateLed state
+*/
+/**************************************************************************/
+void updateServiceValues(void)
+{
+ /* Toggle the one second LEDs */
+ oneSecondLed = !oneSecondLed;
+
+ /* 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\n", temperature);
+ uint32_t temp_ieee11073 = quick_ieee11073_from_float(temperature);
+ memcpy(thermTempPayload+1, &temp_ieee11073, 4);
+ ble.updateCharacteristicValue(tempChar.getHandle(), thermTempPayload, sizeof(thermTempPayload));
+ ble.updateCharacteristicValue(battLevel.getHandle(), (uint8_t *)&batt, sizeof(batt));
+}
+
+/**
+ * @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;
+}
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Fri Aug 22 11:27:32 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/9327015d4013 \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/nRF51822.lib Fri Aug 22 11:27:32 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/teams/Nordic-Semiconductor/code/nRF51822/#f3badab88f02