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@6:7b16a72aebe8, 2017-03-10 (annotated)

Committer:
highroads
Date:
Fri Mar 10 23:08:18 2017 +0000
Revision:
6:7b16a72aebe8
Parent:
5:83be623f6ad4 
Characteristics for Nordic UART in comments corrected and tested with Bluefruit and Nordic apps with those settings. Current compile characteristics for RedBearLabs BLE Controller.

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 3:b5dc2454dfc3 36 // VIN to 5V on KL25
highroads 3:b5dc2454dfc3 37 // GND to GND on KL25
highroads 0:3e21be32c98b 38 SPI spi(PTD2, PTD3, PTD1); // MOSI , MISO , SCLK
highroads 0:3e21be32c98b 39 DigitalInOut BLE_RDY(PTD5); //
highroads 0:3e21be32c98b 40 DigitalInOut BLE_REQ(PTD0); //
highroads 1:b394935d1db1 41 DigitalInOut BLE_RESET(PTA13);
highroads 0:3e21be32c98b 42
highroads 0:3e21be32c98b 43 unsigned char txbuf[16] = {0};
highroads 0:3e21be32c98b 44 unsigned char txlen = 0;
highroads 0:3e21be32c98b 45
highroads 4:fb6008860882 46 //*----- BLE Utility -------------------------------------------------------------------------*/
highroads 0:3e21be32c98b 47 // create peripheral instance, see pinouts above
highroads 5:83be623f6ad4 48 BLEPeripheral blePeripheral = BLEPeripheral(&BLE_REQ, &BLE_RDY, &BLE_RESET);
highroads 4:fb6008860882 49
highroads 0:3e21be32c98b 50 // create service
highroads 3:b5dc2454dfc3 51 BLEService uartService = BLEService("713d0000503e4c75ba943148f18d941e");
highroads 4:fb6008860882 52
highroads 0:3e21be32c98b 53 // create characteristic
highroads 4:fb6008860882 54 BLECharacteristic txCharacteristic = BLECharacteristic("713d0002503e4c75ba943148f18d941e", BLENotify, 20);
highroads 4:fb6008860882 55 BLECharacteristic rxCharacteristic = BLECharacteristic("713d0003503e4c75ba943148f18d941e", BLEWriteWithoutResponse, 20);
highroads 0:3e21be32c98b 56 /*--------------------------------------------------------------------------------------------*/
highroads 5:83be623f6ad4 57 //
highroads 6:7b16a72aebe8 58 // Nordic characteristics work with Nordic and Bluefruit LE apps
highroads 5:83be623f6ad4 59 // uartService 6E400001-B5A3-F393-­E0A9-­E50E24DCCA9E
highroads 6:7b16a72aebe8 60 // txCharacteristic 6E400003-B5A3-F393-­E0A9-­E50E24DCCA9E
highroads 6:7b16a72aebe8 61 // rxCharacteristic 6E400002-B5A3-F393-­E0A9-­E50E24DCCA9E
highroads 5:83be623f6ad4 62 // RedBearLabs characteristics work with RedBear BLE Controller app
highroads 5:83be623f6ad4 63 // uartService 713d0000503e4c75ba943148f18d941e
highroads 5:83be623f6ad4 64 // txCharacteristic 713d0002503e4c75ba943148f18d941e
highroads 5:83be623f6ad4 65 // rxCharacteristic 713d0003503e4c75ba943148f18d941e
highroads 5:83be623f6ad4 66
highroads 5:83be623f6ad4 67
highroads 0:3e21be32c98b 68
highroads 0:3e21be32c98b 69 unsigned int interval = 0;
highroads 0:3e21be32c98b 70 unsigned char count_on = 0;
highroads 0:3e21be32c98b 71
highroads 0:3e21be32c98b 72 int main()
highroads 0:3e21be32c98b 73 {
highroads 0:3e21be32c98b 74 serial.baud(115200);
highroads 0:3e21be32c98b 75 serial.printf("Serial begin!\r\n");
highroads 0:3e21be32c98b 76
highroads 0:3e21be32c98b 77 /*----- BLE Utility ---------------------------------------------*/
highroads 0:3e21be32c98b 78 // set advertised local name and service UUID
highroads 0:3e21be32c98b 79 blePeripheral.setLocalName("BLE Shield");
highroads 0:3e21be32c98b 80
highroads 0:3e21be32c98b 81 blePeripheral.setAdvertisedServiceUuid(uartService.uuid());
highroads 0:3e21be32c98b 82
highroads 0:3e21be32c98b 83 // add service and characteristic
highroads 0:3e21be32c98b 84 blePeripheral.addAttribute(uartService);
highroads 0:3e21be32c98b 85 blePeripheral.addAttribute(rxCharacteristic);
highroads 0:3e21be32c98b 86 blePeripheral.addAttribute(txCharacteristic);
highroads 0:3e21be32c98b 87
highroads 0:3e21be32c98b 88 // begin initialization
highroads 0:3e21be32c98b 89 blePeripheral.begin();
highroads 0:3e21be32c98b 90 /*---------------------------------------------------------------*/
highroads 0:3e21be32c98b 91
highroads 0:3e21be32c98b 92 serial.printf("BLE UART Peripheral begin!\r\n");
highroads 0:3e21be32c98b 93
highroads 0:3e21be32c98b 94 while(1)
highroads 0:3e21be32c98b 95 {
highroads 0:3e21be32c98b 96 BLECentral central = blePeripheral.central();
highroads 0:3e21be32c98b 97
highroads 0:3e21be32c98b 98 if (central)
highroads 0:3e21be32c98b 99 {
highroads 0:3e21be32c98b 100 // central connected to peripheral
highroads 0:3e21be32c98b 101 serial.printf("Connected to central\r\n");
highroads 0:3e21be32c98b 102
highroads 0:3e21be32c98b 103 while (central.connected())
highroads 0:3e21be32c98b 104 {
highroads 0:3e21be32c98b 105 // central still connected to peripheral
highroads 0:3e21be32c98b 106 if (rxCharacteristic.written())
highroads 0:3e21be32c98b 107 {
highroads 0:3e21be32c98b 108 unsigned char rxlen = rxCharacteristic.valueLength();
highroads 0:3e21be32c98b 109 const unsigned char *val = rxCharacteristic.value();
highroads 0:3e21be32c98b 110 serial.printf("didCharacteristicWritten, Length: %d\r\n", rxlen);
highroads 0:3e21be32c98b 111 unsigned char i = 0;
highroads 0:3e21be32c98b 112 while(i<rxlen)
highroads 0:3e21be32c98b 113 {
highroads 0:3e21be32c98b 114 serial.printf("%d, ",val[i++]);
highroads 0:3e21be32c98b 115 }
highroads 0:3e21be32c98b 116 serial.printf("\r\n");
highroads 0:3e21be32c98b 117 }
highroads 0:3e21be32c98b 118
highroads 0:3e21be32c98b 119 if(serial.readable()) // Do not spend much time on doing other things when serial available! Otherwisee, data will lose.
highroads 0:3e21be32c98b 120 {
highroads 0:3e21be32c98b 121 if(!count_on)
highroads 0:3e21be32c98b 122 {
highroads 0:3e21be32c98b 123 count_on = 1;
highroads 0:3e21be32c98b 124 }
highroads 0:3e21be32c98b 125 interval = 0;
highroads 0:3e21be32c98b 126 txbuf[txlen] = serial.getc();
highroads 0:3e21be32c98b 127 txlen++;
highroads 0:3e21be32c98b 128 }
highroads 0:3e21be32c98b 129
highroads 0:3e21be32c98b 130 if(count_on) // Count the interval after receiving a new char from terminate
highroads 0:3e21be32c98b 131 {
highroads 0:3e21be32c98b 132 interval++;
highroads 0:3e21be32c98b 133 }
highroads 0:3e21be32c98b 134
highroads 0:3e21be32c98b 135 if(interval == 10) // If there is no char available last the interval, send the received chars to central.
highroads 0:3e21be32c98b 136 {
highroads 0:3e21be32c98b 137 interval = 0;
highroads 0:3e21be32c98b 138 count_on = 0;
highroads 0:3e21be32c98b 139
highroads 0:3e21be32c98b 140 serial.printf("Received from terminal: %d bytes\r\n", txlen);
highroads 0:3e21be32c98b 141 txCharacteristic.setValue((const unsigned char *)txbuf, txlen);
highroads 0:3e21be32c98b 142 txlen = 0;
highroads 0:3e21be32c98b 143 }
highroads 0:3e21be32c98b 144 }
highroads 0:3e21be32c98b 145
highroads 0:3e21be32c98b 146 // central disconnected
highroads 0:3e21be32c98b 147 serial.printf("Disconnected from central\r\n");
highroads 0:3e21be32c98b 148 }
highroads 0:3e21be32c98b 149 }
highroads 0:3e21be32c98b 150 }