RedBearLab BLE Nano chat, modified to produce 5 digital outputs

Dependencies:   BLE_API mbed nRF51822

Files at this revision

API Documentation at this revision

Comitter:
gogodi91
Date:
Fri Mar 27 17:15:49 2015 +0000
Commit message:
Final Version

Changed in this revision

BLE_API.lib Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file
mbed.bld Show annotated file Show diff for this revision Revisions of this file
nRF51822.lib Show annotated file Show diff for this revision Revisions of this file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/BLE_API.lib	Fri Mar 27 17:15:49 2015 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/teams/Bluetooth-Low-Energy/code/BLE_API/#097be53aea02
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Mar 27 17:15:49 2015 +0000
@@ -0,0 +1,195 @@
+/*
+
+Copyright (c) 2012-2014 RedBearLab
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software 
+and associated documentation files (the "Software"), to deal in the Software without restriction, 
+including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, 
+and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, 
+subject to the following conditions:
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 
+PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE 
+FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+ 
+#include "mbed.h"
+#include "BLEDevice.h"
+
+#define BLE_UUID_TXRX_SERVICE            0x0000 /**< The UUID of the Nordic UART Service. */
+#define BLE_UUID_TX_CHARACTERISTIC       0x0002 /**< The UUID of the TX Characteristic. */
+#define BLE_UUIDS_RX_CHARACTERISTIC      0x0003 /**< The UUID of the RX Characteristic. */
+
+#define TXRX_BUF_LEN                     20
+
+BLEDevice  ble;
+DigitalOut myled1(LED1);
+DigitalOut light1(P0_15);   //green
+DigitalOut light2(P0_6);    //yellow
+DigitalOut light3(P0_7);    //red  
+DigitalOut vib(P0_4);       //vibration
+DigitalOut sound(P0_5);     //sound
+
+Serial pc(USBTX, USBRX);
+
+// The Nordic UART Service
+static const uint8_t uart_base_uuid[] = {0x71, 0x3D, 0, 0, 0x50, 0x3E, 0x4C, 0x75, 0xBA, 0x94, 0x31, 0x48, 0xF1, 0x8D, 0x94, 0x1E};
+static const uint8_t uart_tx_uuid[]   = {0x71, 0x3D, 0, 3, 0x50, 0x3E, 0x4C, 0x75, 0xBA, 0x94, 0x31, 0x48, 0xF1, 0x8D, 0x94, 0x1E};
+static const uint8_t uart_rx_uuid[]   = {0x71, 0x3D, 0, 2, 0x50, 0x3E, 0x4C, 0x75, 0xBA, 0x94, 0x31, 0x48, 0xF1, 0x8D, 0x94, 0x1E};
+static const uint8_t uart_base_uuid_rev[] = {0x1E, 0x94, 0x8D, 0xF1, 0x48, 0x31, 0x94, 0xBA, 0x75, 0x4C, 0x3E, 0x50, 0, 0, 0x3D, 0x71};
+
+
+uint8_t txPayload[TXRX_BUF_LEN] = {0,};
+uint8_t rxPayload[TXRX_BUF_LEN] = {0,};
+
+static uint8_t rx_buf[TXRX_BUF_LEN];
+static uint8_t rx_len=0;
+
+
+GattCharacteristic  txCharacteristic (uart_tx_uuid, txPayload, 1, TXRX_BUF_LEN, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE_WITHOUT_RESPONSE);
+                                      
+GattCharacteristic  rxCharacteristic (uart_rx_uuid, rxPayload, 1, TXRX_BUF_LEN, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
+                                      
+GattCharacteristic *uartChars[] = {&txCharacteristic, &rxCharacteristic};
+
+GattService         uartService(uart_base_uuid, uartChars, sizeof(uartChars) / sizeof(GattCharacteristic *));
+
+
+
+void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason)
+{
+    pc.printf("Disconnected \r\n");
+    pc.printf("Restart advertising \r\n");
+    ble.startAdvertising();
+}
+
+void vibrate(){//Function used when audio and tactile output is required
+    pc.printf("\nVIBRATE\n");
+    sound = 0;
+    light1 = 1;
+    light2 = 1;
+    light3 = 1;
+    for (int i=0;i<250;i++){
+        sound = !sound;//sound requires high frequency
+        if ((i+1)/20 == 0)//vibrate at 250Hz for best result
+            vib = !vib;
+        if ((i+1)/50 == 0){//reduce blinking frequency so flicker is visible
+            light1 = !light1;
+            light2 = !light2;
+            light3 = !light3;
+        }        
+        wait(0.0002);
+    }
+    //turn everything off just in case
+    vib = 0;
+    sound = 0;
+    light1 = 0;
+    light2 = 0;
+    light3 = 0;
+}
+
+
+void WrittenHandler(const GattCharacteristicWriteCBParams *Handler)
+{   
+    uint8_t buf[TXRX_BUF_LEN];
+    uint16_t bytesRead, index;
+    
+    if (Handler->charHandle == txCharacteristic.getValueAttribute().getHandle()) 
+    {
+        ble.readCharacteristicValue(txCharacteristic.getValueAttribute().getHandle(), buf, &bytesRead);
+        memset(txPayload, 0, TXRX_BUF_LEN);
+        memcpy(txPayload, buf, TXRX_BUF_LEN);       
+        pc.printf("WriteHandler \r\n");
+        pc.printf("Length: ");
+        pc.putc(bytesRead);
+        pc.printf("\r\n");
+        pc.printf("Data: ");
+        for(index=0; index<bytesRead; index++)
+        {
+            if (txPayload[0] == 'a'){//get the first letter of the message and see if it is "a"
+                light1 = 1;
+                light2 = 0;
+                light3 = 0;
+                pc.printf("\nGREEN\n");
+                }
+            else if (txPayload[0] == 'b'){
+                light1 = 0;
+                light2 = 1;
+                light3 = 0;
+                pc.printf("\nYELLOW\n");
+                }
+            else if (txPayload[0] == 'c'){
+                light1 = 0;
+                light2 = 0;
+                light3 = 1;
+                pc.printf("\nRED\n");
+                }
+            else if (txPayload[0] == 'd'){
+                vibrate();
+                }
+            else {//turn everything off
+                light1 = 0;
+                light2 = 0;
+                light3 = 0;
+                vib = 0;
+                sound = 0;
+                }
+            pc.putc(txPayload[index]);        
+        }
+        pc.printf("\r\n");
+    }
+}
+
+void uartCB(void)
+{   
+    while(pc.readable())    
+    {
+        rx_buf[rx_len++] = pc.getc();    
+        if(rx_len>=20 || rx_buf[rx_len-1]=='\0' || rx_buf[rx_len-1]=='\n')
+        {
+            ble.updateCharacteristicValue(rxCharacteristic.getValueAttribute().getHandle(), rx_buf, rx_len);
+            pc.printf("RecHandler \r\n");
+            pc.printf("Length: ");
+            pc.putc(rx_len);
+            pc.printf("\r\n");
+            rx_len = 0;
+            break;
+        }
+    }
+}
+
+int main(void)
+{
+    ble.init();
+
+    ble.onDisconnection(disconnectionCallback);
+    ble.onDataWritten(WrittenHandler);  
+    
+    pc.baud(9600);
+    pc.printf("SimpleChat Init \r\n");
+    
+    pc.attach( uartCB , pc.RxIrq);
+   // setup advertising 
+    ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED);
+    ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
+    ble.accumulateAdvertisingPayload(GapAdvertisingData::SHORTENED_LOCAL_NAME,
+                                    (const uint8_t *)"Biscuit", sizeof("Biscuit") - 1);
+    ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_128BIT_SERVICE_IDS,
+                                    (const uint8_t *)uart_base_uuid_rev, sizeof(uart_base_uuid));
+    // 100ms; in multiples of 0.625ms. 
+    ble.setAdvertisingInterval(160);
+
+    ble.addService(uartService);
+    
+    ble.startAdvertising(); 
+    pc.printf("Advertising Start \r\n");
+    //myled1 = 1;
+    while(1)
+    {
+        ble.waitForEvent();
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Fri Mar 27 17:15:49 2015 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/4fc01daae5a5
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nRF51822.lib	Fri Mar 27 17:15:49 2015 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/teams/Nordic-Semiconductor/code/nRF51822/#71302acf1804