Diff: main.cpp

Revision:

0:2d1d68397ff7

Child:

1:5b50f5283781

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Apr 28 20:51:34 2017 +0000
@@ -0,0 +1,138 @@
+/* mbed BLE Library - UART Serial Pass-thru Example
+ *
+ * author    : Moxon Design
+ * date      : 4/27/2017
+ * platforms : Rigado BLE-350/300, Nordic rRF52-DK, rRF51-DK
+ * requires  : mBed Platform Version 5+
+ 
+ * Overview: 
+ * 
+ * Employs the mBed platform ble/services/UARTService for UART emulation,
+ * as well as exposing the phyical UART device providing a transparent bridge 
+ * between the two interfaces. By default, 
+ * UART_TX on pin P0_12,  and UART-RX on pin P0_11 
+ * "Serial dev(P0_12, P0_11); // TX,RX  
+ *
+ * Set "UART_LoopBack" to enable local loopback test instead of pass-thru.
+ * 
+ * Notes : 
+ * 1) Advertises as "BLART" for BLe-uART
+ * 2) ble/services/UARTService is 20 byte max packets or about 4800 Baud (be patient)
+ * 3) transparent bridge (add command interpretor, etc.)
+ *
+ * License :
+ *
+ * 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.
+ */
+ 
+/* mbed platform defines */
+#include "mbed.h"
+#include "ble/BLE.h"
+#include "ble/services/UARTService.h"
+
+/* got debug? */
+/* Set this if you need debug messages on the console */
+/* Negative impact on code-size and power consumption */
+#define DEBUG_OUTPUT 0 
+#if DEBUG_OUTPUT
+#define DEBUG(...) { printf(__VA_ARGS__); }
+#else
+#define DEBUG(...) /* no output mapped */
+#endif
+
+/* instantiate BLE services and softUART service */
+BLEDevice  ble;
+UARTService *uartServicePtr;
+
+/* instantiate hardware UART devices                */
+/* devicename(TXD, RXD);                            */
+/* for "JLink CDC UART Port" use the define below : */
+/* Serial uart1(USBTX, USBRX);                      */
+/* otherwise use the hardware UART on 0.12 & 0.11   */
+/* (a.k.a. d1 & D1 in Arduino parlance...           */
+ Serial uart1(P0_12, P0_11);
+ 
+/* define some blinky LED fun */
+DigitalOut led1(LED1);
+//DigitalOut led2(LED2);
+//DigitalOut led3(LED3);
+//DigitalOut led4(LED4);
+
+void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
+{
+    #if DEBUG_OUTPUT
+      DEBUG("Disconnected!\n\r");
+      DEBUG("Restarting the advertising process\n\r");
+    #endif
+    ble.startAdvertising();
+}
+
+void onDataWritten(const GattWriteCallbackParams *params)
+{
+    if ((uartServicePtr != NULL) && (params->handle == uartServicePtr->getTXCharacteristicHandle())) {
+        uint16_t bytesRead = params->len;
+        
+        #if DEBUG_OUTPUT
+          DEBUG("BLART received %u bytes\n\r", bytesRead);
+        #endif
+        ble.updateCharacteristicValue(uartServicePtr->getRXCharacteristicHandle(), params->data, bytesRead);
+    }
+}
+
+void theTickCallback(void)
+{
+    /* toggle the LED each timer tick (1 sec) */
+    led1 = !led1;
+}
+
+int main(void)
+{
+    /* set up a 1 sec timer to toggle the LED */ 
+    led1 = 1;
+    Ticker ticker;
+    ticker.attach(theTickCallback, 1);
+
+    /* initialze the BLE services */
+    #if DEBUG_OUTPUT
+      DEBUG("Initialising the nRF5x\n\r");
+    #endif
+    ble.init();
+    ble.onDisconnection(disconnectionCallback);
+    ble.onDataWritten(onDataWritten);
+
+    /* setup the BLE advertising */
+    ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED);
+    ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
+    /* my names "BLART", what's yours? */
+     #if DEBUG_OUTPUT
+      DEBUG("Advertising nRF5x as BLART i.e. BLe-uART\n\r");
+    #endif  
+    ble.accumulateAdvertisingPayload(GapAdvertisingData::SHORTENED_LOCAL_NAME,
+                                     (const uint8_t *)"BLART", sizeof("BLART") - 1);
+    ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_128BIT_SERVICE_IDS,
+                                     (const uint8_t *)UARTServiceUUID_reversed, sizeof(UARTServiceUUID_reversed));
+
+    /* Advertising Rate at 1000ms, a multiple of the 0.625ms base timer */
+    ble.setAdvertisingInterval(1000); 
+    ble.startAdvertising();
+
+    /* start the BLE UARTServices */
+    UARTService uartService(ble);
+    uartServicePtr = &uartService;
+
+    /* main */
+    while (true) {
+        /* call wait to give other threads a chance to run */
+        ble.waitForEvent();
+    }
+}
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