NRF51822 as bluetooth to UART
Dependencies: BLE_API BLE_LoopbackUART mbed nRF51822
Fork of BLE_LoopbackUART by
main.cpp@12:fc9171411cf5, 2015-02-24 (annotated)
- Committer:
- zcw607
- Date:
- Tue Feb 24 01:46:20 2015 +0000
- Revision:
- 12:fc9171411cf5
- Parent:
- 10:633cec718bf4
initial commit
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 | |
rgrover1 | 6:e0fc9072e853 | 20 | #include "UARTService.h" |
yihui | 0:e910d9bb040f | 21 | |
rgrover1 | 6:e0fc9072e853 | 22 | #define NEED_CONSOLE_OUTPUT 0 /* Set this if you need debug messages on the console; |
Rohit Grover |
2:e060367b9024 | 23 | * it will have an impact on code-size and power consumption. */ |
yihui | 0:e910d9bb040f | 24 | |
Rohit Grover |
2:e060367b9024 | 25 | #if NEED_CONSOLE_OUTPUT |
rgrover1 | 6:e0fc9072e853 | 26 | #define DEBUG(...) { printf(__VA_ARGS__); } |
yihui | 0:e910d9bb040f | 27 | #else |
Rohit Grover |
2:e060367b9024 | 28 | #define DEBUG(...) /* nothing */ |
Rohit Grover |
2:e060367b9024 | 29 | #endif /* #if NEED_CONSOLE_OUTPUT */ |
yihui | 0:e910d9bb040f | 30 | |
Rohit Grover |
2:e060367b9024 | 31 | BLEDevice ble; |
Rohit Grover |
2:e060367b9024 | 32 | DigitalOut led1(LED1); |
zcw607 | 12:fc9171411cf5 | 33 | Serial pc(USBTX, USBRX); |
yihui | 0:e910d9bb040f | 34 | |
zcw607 | 12:fc9171411cf5 | 35 | static uint8_t rx_buf[20]; |
zcw607 | 12:fc9171411cf5 | 36 | static uint8_t rx_len=0; |
rgrover1 | 6:e0fc9072e853 | 37 | UARTService *uartServicePtr; |
yihui | 0:e910d9bb040f | 38 | |
rgrover1 | 5:4bc41267a03a | 39 | void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason) |
yihui | 0:e910d9bb040f | 40 | { |
Rohit Grover |
2:e060367b9024 | 41 | DEBUG("Disconnected!\n\r"); |
Rohit Grover |
2:e060367b9024 | 42 | DEBUG("Restarting the advertising process\n\r"); |
Rohit Grover |
2:e060367b9024 | 43 | ble.startAdvertising(); |
Rohit Grover |
2:e060367b9024 | 44 | } |
yihui | 0:e910d9bb040f | 45 | |
rgrover1 | 6:e0fc9072e853 | 46 | void onDataWritten(const GattCharacteristicWriteCBParams *params) |
yihui | 0:e910d9bb040f | 47 | { |
rgrover1 | 6:e0fc9072e853 | 48 | if ((uartServicePtr != NULL) && (params->charHandle == uartServicePtr->getTXCharacteristicHandle())) { |
rgrover1 | 5:4bc41267a03a | 49 | uint16_t bytesRead = params->len; |
zcw607 | 12:fc9171411cf5 | 50 | for(uint16_t index=0; index<bytesRead; index++) |
zcw607 | 12:fc9171411cf5 | 51 | { |
zcw607 | 12:fc9171411cf5 | 52 | pc.putc(params->data[index]); |
zcw607 | 12:fc9171411cf5 | 53 | } |
yihui | 0:e910d9bb040f | 54 | } |
Rohit Grover |
2:e060367b9024 | 55 | } |
yihui | 0:e910d9bb040f | 56 | |
zcw607 | 12:fc9171411cf5 | 57 | void uartCB(void) |
zcw607 | 12:fc9171411cf5 | 58 | { |
zcw607 | 12:fc9171411cf5 | 59 | while(pc.readable()) |
zcw607 | 12:fc9171411cf5 | 60 | { |
zcw607 | 12:fc9171411cf5 | 61 | rx_buf[rx_len++] = pc.getc(); |
zcw607 | 12:fc9171411cf5 | 62 | if(rx_len>=20 || rx_buf[rx_len-1]=='\0' || rx_buf[rx_len-1]=='\n') |
zcw607 | 12:fc9171411cf5 | 63 | { |
zcw607 | 12:fc9171411cf5 | 64 | ble.updateCharacteristicValue(uartServicePtr->getRXCharacteristicHandle(), rx_buf, rx_len); |
zcw607 | 12:fc9171411cf5 | 65 | rx_len = 0; |
zcw607 | 12:fc9171411cf5 | 66 | break; |
zcw607 | 12:fc9171411cf5 | 67 | } |
zcw607 | 12:fc9171411cf5 | 68 | } |
zcw607 | 12:fc9171411cf5 | 69 | } |
Rohit Grover |
2:e060367b9024 | 70 | void periodicCallback(void) |
Rohit Grover |
2:e060367b9024 | 71 | { |
rgrover1 | 6:e0fc9072e853 | 72 | led1 = !led1; |
Rohit Grover |
2:e060367b9024 | 73 | } |
yihui | 0:e910d9bb040f | 74 | |
yihui | 0:e910d9bb040f | 75 | int main(void) |
yihui | 0:e910d9bb040f | 76 | { |
Rohit Grover |
2:e060367b9024 | 77 | led1 = 1; |
zcw607 | 12:fc9171411cf5 | 78 | pc.baud(115200); |
zcw607 | 12:fc9171411cf5 | 79 | |
zcw607 | 12:fc9171411cf5 | 80 | pc.attach( uartCB , pc.RxIrq); |
Rohit Grover |
2:e060367b9024 | 81 | Ticker ticker; |
Rohit Grover |
2:e060367b9024 | 82 | ticker.attach(periodicCallback, 1); |
yihui | 0:e910d9bb040f | 83 | |
Rohit Grover |
2:e060367b9024 | 84 | DEBUG("Initialising the nRF51822\n\r"); |
Rohit Grover |
2:e060367b9024 | 85 | ble.init(); |
Rohit Grover |
2:e060367b9024 | 86 | ble.onDisconnection(disconnectionCallback); |
Rohit Grover |
2:e060367b9024 | 87 | ble.onDataWritten(onDataWritten); |
yihui | 0:e910d9bb040f | 88 | |
Rohit Grover |
2:e060367b9024 | 89 | /* setup advertising */ |
Rohit Grover |
2:e060367b9024 | 90 | ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED); |
Rohit Grover |
2:e060367b9024 | 91 | ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); |
Rohit Grover |
2:e060367b9024 | 92 | ble.accumulateAdvertisingPayload(GapAdvertisingData::SHORTENED_LOCAL_NAME, |
rgrover1 | 6:e0fc9072e853 | 93 | (const uint8_t *)"BLE UART", sizeof("BLE UART") - 1); |
Rohit Grover |
2:e060367b9024 | 94 | ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_128BIT_SERVICE_IDS, |
rgrover1 | 6:e0fc9072e853 | 95 | (const uint8_t *)UARTServiceUUID_reversed, sizeof(UARTServiceUUID_reversed)); |
yihui | 0:e910d9bb040f | 96 | |
rgrover1 | 10:633cec718bf4 | 97 | ble.setAdvertisingInterval(Gap::MSEC_TO_ADVERTISEMENT_DURATION_UNITS(1000)); |
Rohit Grover |
2:e060367b9024 | 98 | ble.startAdvertising(); |
yihui | 0:e910d9bb040f | 99 | |
rgrover1 | 6:e0fc9072e853 | 100 | UARTService uartService(ble); |
rgrover1 | 6:e0fc9072e853 | 101 | uartServicePtr = &uartService; |
yihui | 0:e910d9bb040f | 102 | |
Rohit Grover |
2:e060367b9024 | 103 | while (true) { |
Rohit Grover |
2:e060367b9024 | 104 | ble.waitForEvent(); |
yihui | 0:e910d9bb040f | 105 | } |
yihui | 0:e910d9bb040f | 106 | } |