Diff: main.cpp

Revision:

0:415d7f24cb91

Child:

1:1db45b17552e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Jun 05 14:40:15 2015 +0000
@@ -0,0 +1,125 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2015 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "mbed.h"
+#include "BLEDevice.h"
+#include "DiscoveredCharacteristic.h"
+#include "DiscoveredService.h"
+
+BLEDevice  ble;
+DigitalOut led1(LED1);
+
+bool ledCharacteristicDiscovered = false;
+DiscoveredCharacteristic ledCharacteristic;
+
+void periodicCallback(void) {
+    led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
+}
+
+void advertisementCallback(const Gap::AdvertisementCallbackParams_t *params) {
+    if (params->peerAddr[0] != 0x29) { /* !ALERT! Alter this filter to suit your device. */
+        return;
+    }
+    printf("adv peerAddr[%02x %02x %02x %02x %02x %02x] rssi %d, isScanResponse %u, AdvertisementType %u\r\n",
+           params->peerAddr[5], params->peerAddr[4], params->peerAddr[3], params->peerAddr[2], params->peerAddr[1], params->peerAddr[0],
+           params->rssi, params->isScanResponse, params->type);
+
+    ble.connect(params->peerAddr);
+}
+
+void serviceDiscoveryCallback(const DiscoveredService *service) {
+    if (service->getUUID().shortOrLong() == UUID::UUID_TYPE_SHORT) {
+        printf("S UUID-%x attrs[%u %u]\r\n", service->getUUID().getShortUUID(), service->getStartHandle(), service->getEndHandle());
+    } else {
+        printf("S UUID-");
+        const uint8_t *longUUIDBytes = service->getUUID().getBaseUUID();
+        for (unsigned i = 0; i < UUID::LENGTH_OF_LONG_UUID; i++) {
+            printf("%02x", longUUIDBytes[i]);
+        }
+        printf(" attrs[%u %u]\r\n", service->getStartHandle(), service->getEndHandle());
+    }
+}
+
+void characteristicDiscoveryCallback(const DiscoveredCharacteristic *characteristicP) {
+    printf("  C UUID-%x valueAttr[%u] props[%x]\r\n", characteristicP->getShortUUID(), characteristicP->getValueHandle(), (uint8_t)characteristicP->getProperties().broadcast());
+    if (characteristicP->getShortUUID() == 0xa001) {
+        ledCharacteristic           = *characteristicP;
+        ledCharacteristicDiscovered = true;
+    }
+}
+
+void discoveryTerminationCallback(Gap::Handle_t connectionHandle) {
+    printf("terminated SD for handle %u\r\n", connectionHandle);
+}
+
+void connectionCallback(const Gap::ConnectionCallbackParams_t *params) {
+    if (params->role == Gap::CENTRAL) {
+        ble.onServiceDiscoveryTermination(discoveryTerminationCallback);
+        ble.launchServiceDiscovery(params->handle, serviceDiscoveryCallback, characteristicDiscoveryCallback, 0xa000, 0xa001);
+    }
+}
+
+void triggerToggledWrite(const GattReadCallbackParams *response) {
+    if (response->handle == ledCharacteristic.getValueHandle()) {
+#if DUMP_READ_DATA
+        printf("triggerToggledWrite: handle %u, offset %u, len %u\r\n", response->handle, response->offset, response->len);
+        for (unsigned index = 0; index < response->len; index++) {
+            printf("%c[%02x]", response->data[index], response->data[index]);
+        }
+        printf("\r\n");
+#endif
+
+        uint8_t toggledValue = response->data[0] ^ 0x1;
+        ledCharacteristic.write(1, &toggledValue);
+    }
+}
+
+void triggerRead(const GattWriteCallbackParams *response) {
+    if (response->handle == ledCharacteristic.getValueHandle()) {
+        ledCharacteristic.read();
+    }
+}
+
+void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason) {
+    printf("disconnected\r\n");
+}
+
+int main(void) {
+    led1 = 1;
+    Ticker ticker;
+    ticker.attach(periodicCallback, 1);
+
+    ble.init();
+    ble.onConnection(connectionCallback);
+    ble.onDisconnection(disconnectionCallback);
+
+    DiscoveredCharacteristic::setupOnDataRead(triggerToggledWrite);
+    DiscoveredCharacteristic::setupOnDataWrite(triggerRead);
+
+    ble.setScanParams(500, 400);
+    ble.startScan(advertisementCallback);
+
+    while (true) {
+        if (ledCharacteristicDiscovered && !ble.isServiceDiscoveryActive()) {
+            ledCharacteristicDiscovered = false;
+            ledCharacteristic.read(); /* We could have issued this read just as easily from
+                                       * characteristicDiscoveryCallback(); but
+                                       * this demonstrates the use of
+                                       * isServiceDiscoveryActive(). */
+        }
+        ble.waitForEvent();
+    }
+}