Trong Nhan LE
This is a sample project using BLE. A smartphone sends 0x01 or '1' to turn on the led on mbed. Meanwhile, every 5s, mbed board tries to send 3 data bytes to the smartphone.
Dependencies: BLE_API X_NUCLEO_IDB0XA1 mbed
Revision 0:569b2bd966d8, committed 2017-02-23
- Comitter:
- KISIDO85
- Date:
- Thu Feb 23 14:08:03 2017 +0000
- Commit message:
- This is a sample BLE project
Changed in this revision
diff -r 000000000000 -r 569b2bd966d8 BLE_API.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/BLE_API.lib Thu Feb 23 14:08:03 2017 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/teams/Bluetooth-Low-Energy/code/BLE_API/#65474dc93927
diff -r 000000000000 -r 569b2bd966d8 X_NUCLEO_IDB0XA1.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/X_NUCLEO_IDB0XA1.lib Thu Feb 23 14:08:03 2017 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/teams/ST/code/X_NUCLEO_IDB0XA1/#fa98703ece8e
diff -r 000000000000 -r 569b2bd966d8 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Feb 23 14:08:03 2017 +0000
@@ -0,0 +1,156 @@
+#include "mbed.h"
+#include "ble/BLE.h"
+
+Ticker sensorPollingTicker;
+static bool sensorPollingTrigger = false;
+
+DigitalOut led(LED1, 1);
+uint16_t customServiceUUID = 0xEB00;
+uint16_t readCharUUID = 0xEB03;
+uint16_t writeCharUUID = 0xEB02;
+uint16_t temperatureUUID = 0xEB01;
+
+
+
+const static char DEVICE_NAME[] = "ChangeMe!!"; // change this
+static const uint16_t uuid16_list[] = {0xFFFF}; //Custom UUID, FFFF is reserved for development
+
+/* Set Up custom Characteristics */
+static uint8_t readValue[10] = {0};
+ReadOnlyArrayGattCharacteristic<uint8_t, sizeof(readValue)> readChar(readCharUUID, readValue);
+
+static uint8_t writeValue[10] = {0};
+WriteOnlyArrayGattCharacteristic<uint8_t, sizeof(writeValue)> writeChar(writeCharUUID, writeValue);
+
+static uint8_t temperatureValue[3] = {0};
+ReadOnlyArrayGattCharacteristic<uint8_t, sizeof(temperatureValue)> readTemperature(temperatureUUID, temperatureValue);
+
+/* Set up custom service */
+GattCharacteristic *characteristics[] = {&readChar, &writeChar, &readTemperature};
+GattService customService(customServiceUUID, characteristics, sizeof(characteristics) / sizeof(GattCharacteristic *));
+
+
+/*
+ * Restart advertising when phone app disconnects
+*/
+void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *)
+{
+ BLE::Instance(BLE::DEFAULT_INSTANCE).gap().startAdvertising();
+}
+
+/*
+ * Handle writes to writeCharacteristic
+*/
+void writeCharCallback(const GattWriteCallbackParams *params)
+{
+ /* Check to see what characteristic was written, by handle */
+ if(params->handle == writeChar.getValueHandle()) {
+ /* toggle LED if only 1 byte is written */
+ if(params->len == 1) {
+ led = params->data[0];
+ printf("data is: %d\n", params->data[0]);
+ (params->data[0] == 0x00) ? printf("led on\n\r") : printf("led off\n\r"); // print led toggle
+
+ if(params->data[0] == 0x01 || params->data[0] == 49) //character 1 or 0x01
+ {
+ led = 1;
+ }
+ else
+ led = 0;
+ }
+ /* Print the data if more than 1 byte is written */
+ else {
+ printf("Data received: length = %d, data = 0x",params->len);
+ for(int x=0; x < params->len; x++) {
+ printf("%x", params->data[x]);
+ }
+ printf("\n\r");
+ }
+ /* 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);
+
+ /* 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(100); // 100ms.
+
+ /* Add our custom service */
+ ble.addService(customService);
+
+ /* Start advertising */
+ ble.gap().startAdvertising();
+}
+
+void sensorPollingCallback()
+{
+ temperatureValue[0]++;
+ temperatureValue[1] = temperatureValue[0] +1;
+ temperatureValue[2] = temperatureValue[0] +2;
+ if(temperatureValue[0] >= 100)
+ {
+ temperatureValue[0] = 1;
+ temperatureValue[1] = temperatureValue[0] +1;
+ temperatureValue[2] = temperatureValue[0] +2;
+ }
+ //led = ! led;
+ sensorPollingTrigger = true;
+}
+
+/*
+ * Main loop
+*/
+int main(void)
+{
+ /* initialize stuff */
+ printf("\n\r********* Starting Main Loop *********\n\r");
+
+
+ sensorPollingTicker.attach(sensorPollingCallback,5);
+
+ 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 */ }
+
+ /* Infinite loop waiting for BLE interrupt events */
+ while (true) {
+
+ if(sensorPollingTrigger == true && ble.getGapState().connected == true)
+ {
+
+
+ sensorPollingTrigger = false;
+
+
+ ble.gattServer().write(readTemperature.getValueHandle(), temperatureValue, sizeof(temperatureValue));
+
+ //BLE::Instance(BLE::DEFAULT_INSTANCE).gattServer().write(readChar.getValueHandle(), readValue, 1);
+ printf("data is sent: %d\n\r", temperatureValue[0]);
+ printf("size is: %d\n\r", sizeof(temperatureValue));
+ }
+ else
+ {
+ ble.waitForEvent(); /* Save power */
+ }
+ }
+}
\ No newline at end of file
diff -r 000000000000 -r 569b2bd966d8 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Thu Feb 23 14:08:03 2017 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/ad3be0349dc5 \ No newline at end of file