StepSense / Mbed 2 deprecated BLE_UART1

Basic BLE comm Control Led using On/Off Command

Dependencies:   BLE_API mbed nRF51822

Fork of BLE_LoopbackUART by Bluetooth Low Energy

main.cpp@12:51e2c29e3019, 2014-11-09 (annotated)

Committer:
adarsh5723
Date:
Sun Nov 09 23:51:54 2014 +0000
Revision:
12:51e2c29e3019
Parent:
11:4f9451eaca3d
Child:
13:4e4ec6fe8123
Support for Servo Added

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yihui 0:e910d9bb040f 1 /* mbed Microcontroller Library
yihui 0:e910d9bb040f 2 * Copyright (c) 2006-2013 ARM Limited
yihui 0:e910d9bb040f 3 *
yihui 0:e910d9bb040f 4 * Licensed under the Apache License, Version 2.0 (the "License");
yihui 0:e910d9bb040f 5 * you may not use this file except in compliance with the License.
yihui 0:e910d9bb040f 6 * You may obtain a copy of the License at
yihui 0:e910d9bb040f 7 *
yihui 0:e910d9bb040f 8 * http://www.apache.org/licenses/LICENSE-2.0
yihui 0:e910d9bb040f 9 *
yihui 0:e910d9bb040f 10 * Unless required by applicable law or agreed to in writing, software
yihui 0:e910d9bb040f 11 * distributed under the License is distributed on an "AS IS" BASIS,
yihui 0:e910d9bb040f 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
yihui 0:e910d9bb040f 13 * See the License for the specific language governing permissions and
yihui 0:e910d9bb040f 14 * limitations under the License.
yihui 0:e910d9bb040f 15 */
yihui 0:e910d9bb040f 16
yihui 0:e910d9bb040f 17 #include "mbed.h"
Rohit Grover 2:e060367b9024 18 #include "BLEDevice.h"
adarsh5723 10:d4cd8edc6216 19 #include <string.h>
yihui 0:e910d9bb040f 20
rgrover1 6:e0fc9072e853 21 #include "UARTService.h"
yihui 0:e910d9bb040f 22
adarsh5723 10:d4cd8edc6216 23 #define NEED_CONSOLE_OUTPUT 1 /* Set this if you need debug messages on the console;
Rohit Grover 2:e060367b9024 24 * it will have an impact on code-size and power consumption. */
yihui 0:e910d9bb040f 25
Rohit Grover 2:e060367b9024 26 #if NEED_CONSOLE_OUTPUT
rgrover1 6:e0fc9072e853 27 #define DEBUG(...) { printf(__VA_ARGS__); }
yihui 0:e910d9bb040f 28 #else
Rohit Grover 2:e060367b9024 29 #define DEBUG(...) /* nothing */
Rohit Grover 2:e060367b9024 30 #endif /* #if NEED_CONSOLE_OUTPUT */
yihui 0:e910d9bb040f 31
adarsh5723 12:51e2c29e3019 32 #define ON 1960
adarsh5723 12:51e2c29e3019 33 #define OFF 40
adarsh5723 12:51e2c29e3019 34 #define PULSE_WIDTH 2000
adarsh5723 12:51e2c29e3019 35
Rohit Grover 2:e060367b9024 36 BLEDevice ble;
Rohit Grover 2:e060367b9024 37 DigitalOut led1(LED1);
adarsh5723 10:d4cd8edc6216 38 DigitalOut led2(LED2);
adarsh5723 10:d4cd8edc6216 39 DigitalOut pwm_out(P0_30);
adarsh5723 10:d4cd8edc6216 40
adarsh5723 12:51e2c29e3019 41 AnalogIn ldr0(P0_1);
adarsh5723 12:51e2c29e3019 42 AnalogIn ldr1(P0_2);
adarsh5723 12:51e2c29e3019 43 AnalogIn ldr2(P0_3);
adarsh5723 12:51e2c29e3019 44 AnalogIn ldr3(P0_4);
adarsh5723 12:51e2c29e3019 45
yihui 0:e910d9bb040f 46
rgrover1 6:e0fc9072e853 47 UARTService *uartServicePtr;
adarsh5723 12:51e2c29e3019 48 #define TIMER 1
adarsh5723 12:51e2c29e3019 49 //Creating timer Instance
adarsh5723 12:51e2c29e3019 50
adarsh5723 12:51e2c29e3019 51 Ticker ticker;
adarsh5723 12:51e2c29e3019 52 #if TIMER
adarsh5723 12:51e2c29e3019 53 long int timerCount = 0;
adarsh5723 12:51e2c29e3019 54 #endif
yihui 0:e910d9bb040f 55
rgrover1 5:4bc41267a03a 56 void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason)
yihui 0:e910d9bb040f 57 {
Rohit Grover 2:e060367b9024 58 DEBUG("Disconnected!\n\r");
Rohit Grover 2:e060367b9024 59 DEBUG("Restarting the advertising process\n\r");
Rohit Grover 2:e060367b9024 60 ble.startAdvertising();
Rohit Grover 2:e060367b9024 61 }
yihui 0:e910d9bb040f 62
rgrover1 6:e0fc9072e853 63 void onDataWritten(const GattCharacteristicWriteCBParams *params)
yihui 0:e910d9bb040f 64 {
adarsh5723 10:d4cd8edc6216 65 char *str = 0;
adarsh5723 10:d4cd8edc6216 66 int count = 0;
adarsh5723 10:d4cd8edc6216 67
rgrover1 6:e0fc9072e853 68 if ((uartServicePtr != NULL) && (params->charHandle == uartServicePtr->getTXCharacteristicHandle())) {
rgrover1 5:4bc41267a03a 69 uint16_t bytesRead = params->len;
rgrover1 5:4bc41267a03a 70 DEBUG("received %u bytes\n\r", bytesRead);
adarsh5723 10:d4cd8edc6216 71
adarsh5723 10:d4cd8edc6216 72 str = (char *)malloc((sizeof(char) * bytesRead) + 1);
adarsh5723 10:d4cd8edc6216 73 while(count <= bytesRead)
adarsh5723 10:d4cd8edc6216 74 {
adarsh5723 10:d4cd8edc6216 75 *(str + count) = *(params->data + count);
adarsh5723 10:d4cd8edc6216 76 count++;
adarsh5723 10:d4cd8edc6216 77 }
adarsh5723 10:d4cd8edc6216 78 count--;
adarsh5723 10:d4cd8edc6216 79 *(str + count) = '\0';
adarsh5723 10:d4cd8edc6216 80 DEBUG("payload = %s\n\r",str);
adarsh5723 10:d4cd8edc6216 81 if (strncmp(str,"On",bytesRead) == 0)
adarsh5723 10:d4cd8edc6216 82 led2 = 1;
adarsh5723 10:d4cd8edc6216 83 else
adarsh5723 10:d4cd8edc6216 84 led2 = 0;
adarsh5723 10:d4cd8edc6216 85 free(str);
adarsh5723 10:d4cd8edc6216 86 strcpy((char *)params->data,"SPOPOPOSP");
rgrover1 6:e0fc9072e853 87 ble.updateCharacteristicValue(uartServicePtr->getRXCharacteristicHandle(), params->data, bytesRead);
yihui 0:e910d9bb040f 88 }
Rohit Grover 2:e060367b9024 89 }
yihui 0:e910d9bb040f 90
Rohit Grover 2:e060367b9024 91 void periodicCallback(void)
Rohit Grover 2:e060367b9024 92 {
adarsh5723 12:51e2c29e3019 93 #if TIMER
adarsh5723 12:51e2c29e3019 94 timerCount++;
adarsh5723 12:51e2c29e3019 95 if ((timerCount < threshold))
adarsh5723 12:51e2c29e3019 96 {
adarsh5723 12:51e2c29e3019 97 led1 = 1;
adarsh5723 12:51e2c29e3019 98 pwm_out = 1;
adarsh5723 12:51e2c29e3019 99 }
adarsh5723 12:51e2c29e3019 100 else
adarsh5723 12:51e2c29e3019 101 {
adarsh5723 12:51e2c29e3019 102 led1 = 0;
adarsh5723 12:51e2c29e3019 103 pwm_out = 0;
adarsh5723 12:51e2c29e3019 104 }
adarsh5723 12:51e2c29e3019 105 if (timerCount == PULSE_WIDTH)
adarsh5723 12:51e2c29e3019 106 timerCount = 0;
adarsh5723 12:51e2c29e3019 107 #else
rgrover1 6:e0fc9072e853 108 led1 = !led1;
adarsh5723 12:51e2c29e3019 109 #endif
adarsh5723 12:51e2c29e3019 110
Rohit Grover 2:e060367b9024 111 }
yihui 0:e910d9bb040f 112
yihui 0:e910d9bb040f 113 int main(void)
yihui 0:e910d9bb040f 114 {
Rohit Grover 2:e060367b9024 115 led1 = 1;
adarsh5723 12:51e2c29e3019 116 ticker.attach(periodicCallback, 0.000001f);
Rohit Grover 2:e060367b9024 117 DEBUG("Initialising the nRF51822\n\r");
Rohit Grover 2:e060367b9024 118 ble.init();
Rohit Grover 2:e060367b9024 119 ble.onDisconnection(disconnectionCallback);
Rohit Grover 2:e060367b9024 120 ble.onDataWritten(onDataWritten);
yihui 0:e910d9bb040f 121
Rohit Grover 2:e060367b9024 122 /* setup advertising */
Rohit Grover 2:e060367b9024 123 ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED);
Rohit Grover 2:e060367b9024 124 ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
Rohit Grover 2:e060367b9024 125 ble.accumulateAdvertisingPayload(GapAdvertisingData::SHORTENED_LOCAL_NAME,
adarsh5723 10:d4cd8edc6216 126 (const uint8_t *)"AdarshBLE UART", sizeof("AdarshBLE UART") - 1);
Rohit Grover 2:e060367b9024 127 ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_128BIT_SERVICE_IDS,
rgrover1 6:e0fc9072e853 128 (const uint8_t *)UARTServiceUUID_reversed, sizeof(UARTServiceUUID_reversed));
yihui 0:e910d9bb040f 129
Rohit Grover 2:e060367b9024 130 ble.setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */
Rohit Grover 2:e060367b9024 131 ble.startAdvertising();
yihui 0:e910d9bb040f 132
rgrover1 6:e0fc9072e853 133 UARTService uartService(ble);
rgrover1 6:e0fc9072e853 134 uartServicePtr = &uartService;
yihui 0:e910d9bb040f 135
adarsh5723 12:51e2c29e3019 136 while (true) {
Rohit Grover 2:e060367b9024 137 ble.waitForEvent();
yihui 0:e910d9bb040f 138 }
yihui 0:e910d9bb040f 139 }