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@13:4e4ec6fe8123, 2014-11-10 (annotated)

Committer:
adarsh5723
Date:
Mon Nov 10 03:54:49 2014 +0000
Revision:
13:4e4ec6fe8123
Parent:
12:51e2c29e3019 
Complete Demo.; Added functionality to read LDR data, power on and off the lamp

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 13:4e4ec6fe8123 35 #define OUTPUT_LENGTH 35
adarsh5723 12:51e2c29e3019 36
Rohit Grover 2:e060367b9024 37 BLEDevice ble;
Rohit Grover 2:e060367b9024 38 DigitalOut led1(LED1);
adarsh5723 10:d4cd8edc6216 39 DigitalOut led2(LED2);
adarsh5723 13:4e4ec6fe8123 40 DigitalOut pwmOut(P0_30);
adarsh5723 10:d4cd8edc6216 41
adarsh5723 12:51e2c29e3019 42 AnalogIn ldr0(P0_1);
adarsh5723 12:51e2c29e3019 43 AnalogIn ldr1(P0_2);
adarsh5723 12:51e2c29e3019 44 AnalogIn ldr2(P0_3);
adarsh5723 12:51e2c29e3019 45 AnalogIn ldr3(P0_4);
adarsh5723 12:51e2c29e3019 46
adarsh5723 13:4e4ec6fe8123 47 int threshold = 0;
adarsh5723 13:4e4ec6fe8123 48
adarsh5723 13:4e4ec6fe8123 49 char output[50] = "LDR0 = w x y z";
yihui 0:e910d9bb040f 50
rgrover1 6:e0fc9072e853 51 UARTService *uartServicePtr;
adarsh5723 13:4e4ec6fe8123 52 #define TIMER 0
adarsh5723 12:51e2c29e3019 53 //Creating timer Instance
adarsh5723 12:51e2c29e3019 54
adarsh5723 12:51e2c29e3019 55 Ticker ticker;
adarsh5723 12:51e2c29e3019 56 #if TIMER
adarsh5723 12:51e2c29e3019 57 long int timerCount = 0;
adarsh5723 12:51e2c29e3019 58 #endif
yihui 0:e910d9bb040f 59
rgrover1 5:4bc41267a03a 60 void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason)
yihui 0:e910d9bb040f 61 {
Rohit Grover 2:e060367b9024 62 DEBUG("Disconnected!\n\r");
Rohit Grover 2:e060367b9024 63 DEBUG("Restarting the advertising process\n\r");
Rohit Grover 2:e060367b9024 64 ble.startAdvertising();
Rohit Grover 2:e060367b9024 65 }
yihui 0:e910d9bb040f 66
adarsh5723 13:4e4ec6fe8123 67 void getValuesofLDR()
adarsh5723 13:4e4ec6fe8123 68 {
adarsh5723 13:4e4ec6fe8123 69 if (ldr0.read() < 0.7f)
adarsh5723 13:4e4ec6fe8123 70 output[7] = '0';
adarsh5723 13:4e4ec6fe8123 71 else
adarsh5723 13:4e4ec6fe8123 72 output[7] = '1';
adarsh5723 13:4e4ec6fe8123 73 if (ldr0.read() < 0.7f)
adarsh5723 13:4e4ec6fe8123 74 output[9] = '0';
adarsh5723 13:4e4ec6fe8123 75 else
adarsh5723 13:4e4ec6fe8123 76 output[9] = '1';
adarsh5723 13:4e4ec6fe8123 77 if (ldr0.read() < 0.7f)
adarsh5723 13:4e4ec6fe8123 78 output[11] = '0';
adarsh5723 13:4e4ec6fe8123 79 else
adarsh5723 13:4e4ec6fe8123 80 output[11] = '1';
adarsh5723 13:4e4ec6fe8123 81 if (ldr0.read() < 0.7f)
adarsh5723 13:4e4ec6fe8123 82 output[13] = '0';
adarsh5723 13:4e4ec6fe8123 83 else
adarsh5723 13:4e4ec6fe8123 84 output[13] = '1';
adarsh5723 13:4e4ec6fe8123 85
adarsh5723 13:4e4ec6fe8123 86 }
adarsh5723 13:4e4ec6fe8123 87
rgrover1 6:e0fc9072e853 88 void onDataWritten(const GattCharacteristicWriteCBParams *params)
yihui 0:e910d9bb040f 89 {
adarsh5723 10:d4cd8edc6216 90 char *str = 0;
adarsh5723 10:d4cd8edc6216 91 int count = 0;
adarsh5723 10:d4cd8edc6216 92
rgrover1 6:e0fc9072e853 93 if ((uartServicePtr != NULL) && (params->charHandle == uartServicePtr->getTXCharacteristicHandle())) {
rgrover1 5:4bc41267a03a 94 uint16_t bytesRead = params->len;
rgrover1 5:4bc41267a03a 95 DEBUG("received %u bytes\n\r", bytesRead);
adarsh5723 10:d4cd8edc6216 96
adarsh5723 10:d4cd8edc6216 97 str = (char *)malloc((sizeof(char) * bytesRead) + 1);
adarsh5723 10:d4cd8edc6216 98 while(count <= bytesRead)
adarsh5723 10:d4cd8edc6216 99 {
adarsh5723 10:d4cd8edc6216 100 *(str + count) = *(params->data + count);
adarsh5723 10:d4cd8edc6216 101 count++;
adarsh5723 10:d4cd8edc6216 102 }
adarsh5723 10:d4cd8edc6216 103 count--;
adarsh5723 10:d4cd8edc6216 104 *(str + count) = '\0';
adarsh5723 10:d4cd8edc6216 105 DEBUG("payload = %s\n\r",str);
adarsh5723 10:d4cd8edc6216 106 if (strncmp(str,"On",bytesRead) == 0)
adarsh5723 13:4e4ec6fe8123 107 {
adarsh5723 10:d4cd8edc6216 108 led2 = 1;
adarsh5723 13:4e4ec6fe8123 109 pwmOut = 1;
adarsh5723 13:4e4ec6fe8123 110 bytesRead = 7;
adarsh5723 13:4e4ec6fe8123 111 strncpy((char *)params->data,"Lamp On", bytesRead);
adarsh5723 13:4e4ec6fe8123 112 }
adarsh5723 13:4e4ec6fe8123 113 else if (strncmp(str,"Off",bytesRead) == 0)
adarsh5723 13:4e4ec6fe8123 114 {
adarsh5723 10:d4cd8edc6216 115 led2 = 0;
adarsh5723 13:4e4ec6fe8123 116 pwmOut = 0;
adarsh5723 13:4e4ec6fe8123 117 bytesRead = 7;
adarsh5723 13:4e4ec6fe8123 118 strncpy((char *)params->data,"Lamp Off", bytesRead);
adarsh5723 13:4e4ec6fe8123 119 }
adarsh5723 13:4e4ec6fe8123 120 else if (strncmp(str,"Read",bytesRead) == 0)
adarsh5723 13:4e4ec6fe8123 121 {
adarsh5723 13:4e4ec6fe8123 122 bytesRead = 13;
adarsh5723 13:4e4ec6fe8123 123 getValuesofLDR();
adarsh5723 13:4e4ec6fe8123 124 strncpy((char *)params->data,output,bytesRead);
adarsh5723 13:4e4ec6fe8123 125
adarsh5723 13:4e4ec6fe8123 126 }
adarsh5723 13:4e4ec6fe8123 127 else
adarsh5723 13:4e4ec6fe8123 128 {
adarsh5723 13:4e4ec6fe8123 129 bytesRead = 14;
adarsh5723 13:4e4ec6fe8123 130 strncpy((char *)params->data,"Invalid Entry", bytesRead);
adarsh5723 13:4e4ec6fe8123 131 }
adarsh5723 13:4e4ec6fe8123 132 free(str);
rgrover1 6:e0fc9072e853 133 ble.updateCharacteristicValue(uartServicePtr->getRXCharacteristicHandle(), params->data, bytesRead);
yihui 0:e910d9bb040f 134 }
Rohit Grover 2:e060367b9024 135 }
yihui 0:e910d9bb040f 136
Rohit Grover 2:e060367b9024 137 void periodicCallback(void)
Rohit Grover 2:e060367b9024 138 {
adarsh5723 12:51e2c29e3019 139 #if TIMER
adarsh5723 12:51e2c29e3019 140 timerCount++;
adarsh5723 12:51e2c29e3019 141 if ((timerCount < threshold))
adarsh5723 12:51e2c29e3019 142 {
adarsh5723 12:51e2c29e3019 143 led1 = 1;
adarsh5723 12:51e2c29e3019 144 pwm_out = 1;
adarsh5723 12:51e2c29e3019 145 }
adarsh5723 12:51e2c29e3019 146 else
adarsh5723 12:51e2c29e3019 147 {
adarsh5723 12:51e2c29e3019 148 led1 = 0;
adarsh5723 12:51e2c29e3019 149 pwm_out = 0;
adarsh5723 12:51e2c29e3019 150 }
adarsh5723 12:51e2c29e3019 151 if (timerCount == PULSE_WIDTH)
adarsh5723 12:51e2c29e3019 152 timerCount = 0;
adarsh5723 12:51e2c29e3019 153 #else
rgrover1 6:e0fc9072e853 154 led1 = !led1;
adarsh5723 12:51e2c29e3019 155 #endif
adarsh5723 12:51e2c29e3019 156
Rohit Grover 2:e060367b9024 157 }
yihui 0:e910d9bb040f 158
yihui 0:e910d9bb040f 159 int main(void)
yihui 0:e910d9bb040f 160 {
Rohit Grover 2:e060367b9024 161 led1 = 1;
Rohit Grover 2:e060367b9024 162 DEBUG("Initialising the nRF51822\n\r");
adarsh5723 13:4e4ec6fe8123 163 //ticker.attach(periodicCallback, 0.00001f);
Rohit Grover 2:e060367b9024 164 ble.init();
adarsh5723 13:4e4ec6fe8123 165
adarsh5723 13:4e4ec6fe8123 166 DEBUG("Initialising the nRF51822_1\n\r");
Rohit Grover 2:e060367b9024 167 ble.onDisconnection(disconnectionCallback);
adarsh5723 13:4e4ec6fe8123 168
adarsh5723 13:4e4ec6fe8123 169 DEBUG("Initialising the nRF51822_2\n\r");
Rohit Grover 2:e060367b9024 170 ble.onDataWritten(onDataWritten);
yihui 0:e910d9bb040f 171
adarsh5723 13:4e4ec6fe8123 172 DEBUG("Initialising the nRF51822_3\n\r");
Rohit Grover 2:e060367b9024 173 /* setup advertising */
Rohit Grover 2:e060367b9024 174 ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED);
Rohit Grover 2:e060367b9024 175 ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
Rohit Grover 2:e060367b9024 176 ble.accumulateAdvertisingPayload(GapAdvertisingData::SHORTENED_LOCAL_NAME,
adarsh5723 10:d4cd8edc6216 177 (const uint8_t *)"AdarshBLE UART", sizeof("AdarshBLE UART") - 1);
Rohit Grover 2:e060367b9024 178 ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_128BIT_SERVICE_IDS,
rgrover1 6:e0fc9072e853 179 (const uint8_t *)UARTServiceUUID_reversed, sizeof(UARTServiceUUID_reversed));
yihui 0:e910d9bb040f 180
Rohit Grover 2:e060367b9024 181 ble.setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */
Rohit Grover 2:e060367b9024 182 ble.startAdvertising();
yihui 0:e910d9bb040f 183
rgrover1 6:e0fc9072e853 184 UARTService uartService(ble);
rgrover1 6:e0fc9072e853 185 uartServicePtr = &uartService;
yihui 0:e910d9bb040f 186
adarsh5723 13:4e4ec6fe8123 187 DEBUG("Initialising the nRF51822_4\n\r");
adarsh5723 12:51e2c29e3019 188 while (true) {
Rohit Grover 2:e060367b9024 189 ble.waitForEvent();
yihui 0:e910d9bb040f 190 }
yihui 0:e910d9bb040f 191 }