Use of nRF51822 to demonstrate usage of BLE-UART service provided by Nordic and the use of uLCD-144-G2. The demonstration uses the nRF Master Control Panel and nRF UART demo apps provided by Nordic and available on Google Play and Apple Store. The firmware receives data over the TX characteristic, increments it by 1 and sends it over RX characteristic. The notifications need to be enabled for the RX characteristic in the Master Control Panel to be able to receive the data. For more information check the notebook page: http://developer.mbed.org/users/garimagupta002/notebook/ble-uart-lcd-demo/
Dependencies: 4DGL-uLCD-SE BLE_API DFRobot_BLE_LoopbackUART mbed nRF51822
Fork of DFRobot_BLE_LoopbackUART by
main.cpp@10:c3eef6f3686a, 2014-12-14 (annotated)
- Committer:
- garimagupta002
- Date:
- Sun Dec 14 21:37:03 2014 +0000
- Revision:
- 10:c3eef6f3686a
- Parent:
- 9:7b3841a91548
First version of the BLE-UART-LCD project.; Does normal loopback in UART adding each byte received. Firmware misbehaving after library update on 14 Dec 2014.
Who changed what in which revision?
User | Revision | Line number | New 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" |
yihui | 0:e910d9bb040f | 19 | |
garimagupta002 | 10:c3eef6f3686a | 20 | //To use LCD |
garimagupta002 | 10:c3eef6f3686a | 21 | #include "uLCD_4DGL.h" |
garimagupta002 | 10:c3eef6f3686a | 22 | |
garimagupta002 | 10:c3eef6f3686a | 23 | //UART Primary Service |
rgrover1 | 6:e0fc9072e853 | 24 | #include "UARTService.h" |
yihui | 0:e910d9bb040f | 25 | |
garimagupta002 | 10:c3eef6f3686a | 26 | //Battery and DeviceInformation Auxilary Services |
garimagupta002 | 10:c3eef6f3686a | 27 | #include "BatteryService.h" |
garimagupta002 | 10:c3eef6f3686a | 28 | #include "DeviceInformationService.h" |
yihui | 0:e910d9bb040f | 29 | |
Rohit Grover |
2:e060367b9024 | 30 | BLEDevice ble; |
Rohit Grover |
2:e060367b9024 | 31 | DigitalOut led1(LED1); |
garimagupta002 | 10:c3eef6f3686a | 32 | uLCD_4DGL uLCD(P0_9,P0_11,P0_1); |
yihui | 0:e910d9bb040f | 33 | |
garimagupta002 | 10:c3eef6f3686a | 34 | //Using the standard GATT Service IDs. |
garimagupta002 | 10:c3eef6f3686a | 35 | static const uint16_t uuid16_list[] = {GattService::UUID_BATTERY_SERVICE, |
garimagupta002 | 10:c3eef6f3686a | 36 | GattService::UUID_DEVICE_INFORMATION_SERVICE}; |
garimagupta002 | 10:c3eef6f3686a | 37 | |
garimagupta002 | 10:c3eef6f3686a | 38 | //Used to access the defined in main UARTService object globally. |
rgrover1 | 6:e0fc9072e853 | 39 | UARTService *uartServicePtr; |
yihui | 0:e910d9bb040f | 40 | |
garimagupta002 | 10:c3eef6f3686a | 41 | //Keeping a receive buffer to alter the data received. |
garimagupta002 | 10:c3eef6f3686a | 42 | uint8_t DatatoSend[1000]; |
garimagupta002 | 10:c3eef6f3686a | 43 | |
rgrover1 | 5:4bc41267a03a | 44 | void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason) |
yihui | 0:e910d9bb040f | 45 | { |
garimagupta002 | 10:c3eef6f3686a | 46 | //Print the LCD messages. |
garimagupta002 | 10:c3eef6f3686a | 47 | uLCD.cls(); |
garimagupta002 | 10:c3eef6f3686a | 48 | uLCD.printf("\n Disconnected.!!\n"); |
garimagupta002 | 10:c3eef6f3686a | 49 | uLCD.printf("\n Restarting the advertising process."); |
Rohit Grover |
2:e060367b9024 | 50 | ble.startAdvertising(); |
Rohit Grover |
2:e060367b9024 | 51 | } |
yihui | 0:e910d9bb040f | 52 | |
rgrover1 | 6:e0fc9072e853 | 53 | void onDataWritten(const GattCharacteristicWriteCBParams *params) |
yihui | 0:e910d9bb040f | 54 | { |
rgrover1 | 6:e0fc9072e853 | 55 | if ((uartServicePtr != NULL) && (params->charHandle == uartServicePtr->getTXCharacteristicHandle())) { |
rgrover1 | 5:4bc41267a03a | 56 | uint16_t bytesRead = params->len; |
garimagupta002 | 10:c3eef6f3686a | 57 | |
garimagupta002 | 10:c3eef6f3686a | 58 | uLCD.cls(); |
garimagupta002 | 10:c3eef6f3686a | 59 | uLCD.printf("Data Received.!!\n"); |
garimagupta002 | 10:c3eef6f3686a | 60 | |
garimagupta002 | 10:c3eef6f3686a | 61 | for(int j=0;j<bytesRead;j++) |
garimagupta002 | 10:c3eef6f3686a | 62 | { |
garimagupta002 | 10:c3eef6f3686a | 63 | uLCD.printf(" %x\n",*((params->data)+j)); |
garimagupta002 | 10:c3eef6f3686a | 64 | DatatoSend[j]=(*((params->data)+j))+1; |
garimagupta002 | 10:c3eef6f3686a | 65 | } |
garimagupta002 | 10:c3eef6f3686a | 66 | wait(1); |
garimagupta002 | 10:c3eef6f3686a | 67 | |
garimagupta002 | 10:c3eef6f3686a | 68 | ble.updateCharacteristicValue(uartServicePtr->getRXCharacteristicHandle(), DatatoSend, bytesRead); |
garimagupta002 | 10:c3eef6f3686a | 69 | |
garimagupta002 | 10:c3eef6f3686a | 70 | //Use the below statement for loopback. |
garimagupta002 | 10:c3eef6f3686a | 71 | //ble.updateCharacteristicValue(uartServicePtr->getRXCharacteristicHandle(), params->data, bytesRead); |
garimagupta002 | 10:c3eef6f3686a | 72 | |
garimagupta002 | 10:c3eef6f3686a | 73 | uLCD.cls(); |
garimagupta002 | 10:c3eef6f3686a | 74 | uLCD.printf("Data Sent.!!\n"); |
garimagupta002 | 10:c3eef6f3686a | 75 | for(int j=0;j<bytesRead;j++) |
garimagupta002 | 10:c3eef6f3686a | 76 | { |
garimagupta002 | 10:c3eef6f3686a | 77 | uLCD.printf(" %x\n",DatatoSend[j]); |
garimagupta002 | 10:c3eef6f3686a | 78 | } |
garimagupta002 | 10:c3eef6f3686a | 79 | wait(1); |
yihui | 0:e910d9bb040f | 80 | } |
Rohit Grover |
2:e060367b9024 | 81 | } |
yihui | 0:e910d9bb040f | 82 | |
Rohit Grover |
2:e060367b9024 | 83 | void periodicCallback(void) |
Rohit Grover |
2:e060367b9024 | 84 | { |
rgrover1 | 6:e0fc9072e853 | 85 | led1 = !led1; |
Rohit Grover |
2:e060367b9024 | 86 | } |
yihui | 0:e910d9bb040f | 87 | |
yihui | 0:e910d9bb040f | 88 | int main(void) |
yihui | 0:e910d9bb040f | 89 | { |
garimagupta002 | 10:c3eef6f3686a | 90 | uLCD.reset(); |
garimagupta002 | 10:c3eef6f3686a | 91 | uLCD.printf("\n Hello...\n"); //Default Green on black text |
garimagupta002 | 10:c3eef6f3686a | 92 | uLCD.printf("\n Starting BLE-UART Demo..."); |
jimaobian | 9:7b3841a91548 | 93 | |
Rohit Grover |
2:e060367b9024 | 94 | led1 = 1; |
Rohit Grover |
2:e060367b9024 | 95 | Ticker ticker; |
Rohit Grover |
2:e060367b9024 | 96 | ticker.attach(periodicCallback, 1); |
yihui | 0:e910d9bb040f | 97 | |
Rohit Grover |
2:e060367b9024 | 98 | ble.init(); |
Rohit Grover |
2:e060367b9024 | 99 | ble.onDisconnection(disconnectionCallback); |
Rohit Grover |
2:e060367b9024 | 100 | ble.onDataWritten(onDataWritten); |
yihui | 0:e910d9bb040f | 101 | |
garimagupta002 | 10:c3eef6f3686a | 102 | /* Set up Primary service*/ |
garimagupta002 | 10:c3eef6f3686a | 103 | UARTService uartService(ble); |
garimagupta002 | 10:c3eef6f3686a | 104 | uartServicePtr = &uartService; |
garimagupta002 | 10:c3eef6f3686a | 105 | |
garimagupta002 | 10:c3eef6f3686a | 106 | /* Setup auxiliary services. */ |
garimagupta002 | 10:c3eef6f3686a | 107 | BatteryService battery(ble); |
garimagupta002 | 10:c3eef6f3686a | 108 | DeviceInformationService deviceInfo(ble, "ARM", "Model1", "SN1", "hw-rev1", "fw-rev1", "soft-rev1"); |
garimagupta002 | 10:c3eef6f3686a | 109 | |
garimagupta002 | 10:c3eef6f3686a | 110 | /* Setup advertising */ |
garimagupta002 | 10:c3eef6f3686a | 111 | ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); |
Rohit Grover |
2:e060367b9024 | 112 | ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); |
Rohit Grover |
2:e060367b9024 | 113 | ble.accumulateAdvertisingPayload(GapAdvertisingData::SHORTENED_LOCAL_NAME, |
rgrover1 | 6:e0fc9072e853 | 114 | (const uint8_t *)"BLE UART", sizeof("BLE UART") - 1); |
garimagupta002 | 10:c3eef6f3686a | 115 | ble.accumulateAdvertisingPayload(GapAdvertisingData::INCOMPLETE_LIST_128BIT_SERVICE_IDS, |
rgrover1 | 6:e0fc9072e853 | 116 | (const uint8_t *)UARTServiceUUID_reversed, sizeof(UARTServiceUUID_reversed)); |
garimagupta002 | 10:c3eef6f3686a | 117 | ble.accumulateAdvertisingPayload(GapAdvertisingData::INCOMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); |
Rohit Grover |
2:e060367b9024 | 118 | ble.setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */ |
Rohit Grover |
2:e060367b9024 | 119 | ble.startAdvertising(); |
garimagupta002 | 10:c3eef6f3686a | 120 | uLCD.text_width(1); |
garimagupta002 | 10:c3eef6f3686a | 121 | uLCD.text_height(1); |
garimagupta002 | 10:c3eef6f3686a | 122 | uLCD.color(GREEN); |
garimagupta002 | 10:c3eef6f3686a | 123 | |
garimagupta002 | 10:c3eef6f3686a | 124 | uLCD.cls(); |
garimagupta002 | 10:c3eef6f3686a | 125 | uLCD.locate(0,2); |
garimagupta002 | 10:c3eef6f3686a | 126 | uLCD.printf("Started Advertising.!! \n"); |
garimagupta002 | 10:c3eef6f3686a | 127 | wait(1); |
jimaobian | 9:7b3841a91548 | 128 | |
garimagupta002 | 10:c3eef6f3686a | 129 | while (true) { |
jimaobian | 9:7b3841a91548 | 130 | |
garimagupta002 | 10:c3eef6f3686a | 131 | uLCD.cls(); |
garimagupta002 | 10:c3eef6f3686a | 132 | uLCD.locate(0,2); |
garimagupta002 | 10:c3eef6f3686a | 133 | uLCD.printf("\nWaiting to receive Data.\n"); |
Rohit Grover |
2:e060367b9024 | 134 | ble.waitForEvent(); |
yihui | 0:e910d9bb040f | 135 | } |
yihui | 0:e910d9bb040f | 136 | } |