Ian Kilburn / Mbed 2 deprecated BLE_KL25_nRF8001

Adafruit Bluefruit with KL25Z

Dependencies:   BLE_nRF8001 mbed

Simple implementation of UART on FRDM KL25Z board with nRF8001 Adafruit breakout. Uses RedBearLabs Library and could be made to work with their BLE Shield.

UART Characteristics can be changed to work with either RedBearLabs BLE Controller app or using the Nordic settings the nRF apps or the Adafruit Bluefruit LE apps.

main.cpp@2:e6d7390d4429, 2017-03-09 (annotated)

Committer:
highroads
Date:
Thu Mar 09 22:39:56 2017 +0000
Revision:
2:e6d7390d4429
Parent:
1:b394935d1db1
Child:
3:b5dc2454dfc3
Changed uuid to match Nordic UART

Who changed what in which revision?

UserRevisionLine numberNew contents of line
highroads 0:3e21be32c98b 1 /*
highroads 0:3e21be32c98b 2
highroads 0:3e21be32c98b 3 Copyright (c) 2012-2014 RedBearLab
highroads 0:3e21be32c98b 4
highroads 0:3e21be32c98b 5 Permission is hereby granted, free of charge, to any person obtaining a copy of this software
highroads 0:3e21be32c98b 6 and associated documentation files (the "Software"), to deal in the Software without restriction,
highroads 0:3e21be32c98b 7 including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
highroads 0:3e21be32c98b 8 and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
highroads 0:3e21be32c98b 9 subject to the following conditions:
highroads 0:3e21be32c98b 10 The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
highroads 0:3e21be32c98b 11
highroads 0:3e21be32c98b 12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
highroads 0:3e21be32c98b 13 INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
highroads 0:3e21be32c98b 14 PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
highroads 0:3e21be32c98b 15 FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
highroads 0:3e21be32c98b 16 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
highroads 0:3e21be32c98b 17
highroads 0:3e21be32c98b 18 */
highroads 0:3e21be32c98b 19
highroads 0:3e21be32c98b 20 /*
highroads 0:3e21be32c98b 21 * The application works with the BLEController iOS/Android App.
highroads 0:3e21be32c98b 22 * Type something from the Terminal to send
highroads 0:3e21be32c98b 23 * to the BLEController App or vice verse.
highroads 0:3e21be32c98b 24 * Characteristics received from App will print on Terminal.
highroads 0:3e21be32c98b 25 */
highroads 0:3e21be32c98b 26
highroads 0:3e21be32c98b 27 // Import libraries
highroads 0:3e21be32c98b 28 #include "Arduino.h"
highroads 0:3e21be32c98b 29 #include "BLEPeripheral.h"
highroads 0:3e21be32c98b 30
highroads 0:3e21be32c98b 31 Serial serial(USBTX, USBRX);
highroads 0:3e21be32c98b 32
highroads 0:3e21be32c98b 33 // The SPI construct, REQN and RDYN IO construct should be modified manually
highroads 0:3e21be32c98b 34 // It depend on the board you are using and the REQN&RDYN configuration on BLE Shield
highroads 0:3e21be32c98b 35 // config for KL25Z
highroads 0:3e21be32c98b 36 SPI spi(PTD2, PTD3, PTD1); // MOSI , MISO , SCLK
highroads 0:3e21be32c98b 37 DigitalInOut BLE_RDY(PTD5); //
highroads 0:3e21be32c98b 38 DigitalInOut BLE_REQ(PTD0); //
highroads 1:b394935d1db1 39 DigitalInOut BLE_RESET(PTA13);
highroads 0:3e21be32c98b 40
highroads 0:3e21be32c98b 41 unsigned char txbuf[16] = {0};
highroads 0:3e21be32c98b 42 unsigned char txlen = 0;
highroads 0:3e21be32c98b 43
highroads 0:3e21be32c98b 44 /*----- BLE Utility -------------------------------------------------------------------------*/
highroads 0:3e21be32c98b 45 // create peripheral instance, see pinouts above
highroads 1:b394935d1db1 46 BLEPeripheral blePeripheral = BLEPeripheral(&BLE_REQ, &BLE_RDY, &BLE_RESET);
highroads 0:3e21be32c98b 47
highroads 0:3e21be32c98b 48 // create service
highroads 2:e6d7390d4429 49 BLEService uartService = BLEService("6e400001b5a3f393e0a9e50e24dcca9e");
highroads 0:3e21be32c98b 50
highroads 0:3e21be32c98b 51 // create characteristic
highroads 2:e6d7390d4429 52 BLECharacteristic txCharacteristic = BLECharacteristic("6e400001b5a3f393e0a9e50e24dcca9e", BLENotify, 20);
highroads 2:e6d7390d4429 53 BLECharacteristic rxCharacteristic = BLECharacteristic("6e400001b5a3f393e0a9e50e24dcca9e", BLEWriteWithoutResponse, 20);
highroads 0:3e21be32c98b 54 /*--------------------------------------------------------------------------------------------*/
highroads 0:3e21be32c98b 55
highroads 0:3e21be32c98b 56 unsigned int interval = 0;
highroads 0:3e21be32c98b 57 unsigned char count_on = 0;
highroads 0:3e21be32c98b 58
highroads 0:3e21be32c98b 59 int main()
highroads 0:3e21be32c98b 60 {
highroads 0:3e21be32c98b 61 serial.baud(115200);
highroads 0:3e21be32c98b 62 serial.printf("Serial begin!\r\n");
highroads 0:3e21be32c98b 63
highroads 0:3e21be32c98b 64 /*----- BLE Utility ---------------------------------------------*/
highroads 0:3e21be32c98b 65 // set advertised local name and service UUID
highroads 0:3e21be32c98b 66 blePeripheral.setLocalName("BLE Shield");
highroads 0:3e21be32c98b 67
highroads 0:3e21be32c98b 68 blePeripheral.setAdvertisedServiceUuid(uartService.uuid());
highroads 0:3e21be32c98b 69
highroads 0:3e21be32c98b 70 // add service and characteristic
highroads 0:3e21be32c98b 71 blePeripheral.addAttribute(uartService);
highroads 0:3e21be32c98b 72 blePeripheral.addAttribute(rxCharacteristic);
highroads 0:3e21be32c98b 73 blePeripheral.addAttribute(txCharacteristic);
highroads 0:3e21be32c98b 74
highroads 0:3e21be32c98b 75 // begin initialization
highroads 0:3e21be32c98b 76 blePeripheral.begin();
highroads 0:3e21be32c98b 77 /*---------------------------------------------------------------*/
highroads 0:3e21be32c98b 78
highroads 0:3e21be32c98b 79 serial.printf("BLE UART Peripheral begin!\r\n");
highroads 0:3e21be32c98b 80
highroads 0:3e21be32c98b 81 while(1)
highroads 0:3e21be32c98b 82 {
highroads 0:3e21be32c98b 83 BLECentral central = blePeripheral.central();
highroads 0:3e21be32c98b 84
highroads 0:3e21be32c98b 85 if (central)
highroads 0:3e21be32c98b 86 {
highroads 0:3e21be32c98b 87 // central connected to peripheral
highroads 0:3e21be32c98b 88 serial.printf("Connected to central\r\n");
highroads 0:3e21be32c98b 89
highroads 0:3e21be32c98b 90 while (central.connected())
highroads 0:3e21be32c98b 91 {
highroads 0:3e21be32c98b 92 // central still connected to peripheral
highroads 0:3e21be32c98b 93 if (rxCharacteristic.written())
highroads 0:3e21be32c98b 94 {
highroads 0:3e21be32c98b 95 unsigned char rxlen = rxCharacteristic.valueLength();
highroads 0:3e21be32c98b 96 const unsigned char *val = rxCharacteristic.value();
highroads 0:3e21be32c98b 97 serial.printf("didCharacteristicWritten, Length: %d\r\n", rxlen);
highroads 0:3e21be32c98b 98 unsigned char i = 0;
highroads 0:3e21be32c98b 99 while(i<rxlen)
highroads 0:3e21be32c98b 100 {
highroads 0:3e21be32c98b 101 serial.printf("%d, ",val[i++]);
highroads 0:3e21be32c98b 102 }
highroads 0:3e21be32c98b 103 serial.printf("\r\n");
highroads 0:3e21be32c98b 104 }
highroads 0:3e21be32c98b 105
highroads 0:3e21be32c98b 106 if(serial.readable()) // Do not spend much time on doing other things when serial available! Otherwisee, data will lose.
highroads 0:3e21be32c98b 107 {
highroads 0:3e21be32c98b 108 if(!count_on)
highroads 0:3e21be32c98b 109 {
highroads 0:3e21be32c98b 110 count_on = 1;
highroads 0:3e21be32c98b 111 }
highroads 0:3e21be32c98b 112 interval = 0;
highroads 0:3e21be32c98b 113 txbuf[txlen] = serial.getc();
highroads 0:3e21be32c98b 114 txlen++;
highroads 0:3e21be32c98b 115 }
highroads 0:3e21be32c98b 116
highroads 0:3e21be32c98b 117 if(count_on) // Count the interval after receiving a new char from terminate
highroads 0:3e21be32c98b 118 {
highroads 0:3e21be32c98b 119 interval++;
highroads 0:3e21be32c98b 120 }
highroads 0:3e21be32c98b 121
highroads 0:3e21be32c98b 122 if(interval == 10) // If there is no char available last the interval, send the received chars to central.
highroads 0:3e21be32c98b 123 {
highroads 0:3e21be32c98b 124 interval = 0;
highroads 0:3e21be32c98b 125 count_on = 0;
highroads 0:3e21be32c98b 126
highroads 0:3e21be32c98b 127 serial.printf("Received from terminal: %d bytes\r\n", txlen);
highroads 0:3e21be32c98b 128 txCharacteristic.setValue((const unsigned char *)txbuf, txlen);
highroads 0:3e21be32c98b 129 txlen = 0;
highroads 0:3e21be32c98b 130 }
highroads 0:3e21be32c98b 131 }
highroads 0:3e21be32c98b 132
highroads 0:3e21be32c98b 133 // central disconnected
highroads 0:3e21be32c98b 134 serial.printf("Disconnected from central\r\n");
highroads 0:3e21be32c98b 135 }
highroads 0:3e21be32c98b 136 }
highroads 0:3e21be32c98b 137 }