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@0:3e21be32c98b, 2017-03-09 (annotated)

Committer:
highroads
Date:
Thu Mar 09 16:56:23 2017 +0000
Revision:
0:3e21be32c98b
Child:
1:b394935d1db1
Test version for Sufi

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 0:3e21be32c98b 39
highroads 0:3e21be32c98b 40 unsigned char txbuf[16] = {0};
highroads 0:3e21be32c98b 41 unsigned char txlen = 0;
highroads 0:3e21be32c98b 42
highroads 0:3e21be32c98b 43 /*----- BLE Utility -------------------------------------------------------------------------*/
highroads 0:3e21be32c98b 44 // create peripheral instance, see pinouts above
highroads 0:3e21be32c98b 45 BLEPeripheral blePeripheral = BLEPeripheral(&BLE_REQ, &BLE_RDY, NULL);
highroads 0:3e21be32c98b 46
highroads 0:3e21be32c98b 47 // create service
highroads 0:3e21be32c98b 48 BLEService uartService = BLEService("713d0000503e4c75ba943148f18d941e");
highroads 0:3e21be32c98b 49
highroads 0:3e21be32c98b 50 // create characteristic
highroads 0:3e21be32c98b 51 BLECharacteristic txCharacteristic = BLECharacteristic("713d0002503e4c75ba943148f18d941e", BLENotify, 20);
highroads 0:3e21be32c98b 52 BLECharacteristic rxCharacteristic = BLECharacteristic("713d0003503e4c75ba943148f18d941e", BLEWriteWithoutResponse, 20);
highroads 0:3e21be32c98b 53 /*--------------------------------------------------------------------------------------------*/
highroads 0:3e21be32c98b 54
highroads 0:3e21be32c98b 55 unsigned int interval = 0;
highroads 0:3e21be32c98b 56 unsigned char count_on = 0;
highroads 0:3e21be32c98b 57
highroads 0:3e21be32c98b 58 int main()
highroads 0:3e21be32c98b 59 {
highroads 0:3e21be32c98b 60 serial.baud(115200);
highroads 0:3e21be32c98b 61 serial.printf("Serial begin!\r\n");
highroads 0:3e21be32c98b 62
highroads 0:3e21be32c98b 63 /*----- BLE Utility ---------------------------------------------*/
highroads 0:3e21be32c98b 64 // set advertised local name and service UUID
highroads 0:3e21be32c98b 65 blePeripheral.setLocalName("BLE Shield");
highroads 0:3e21be32c98b 66
highroads 0:3e21be32c98b 67 blePeripheral.setAdvertisedServiceUuid(uartService.uuid());
highroads 0:3e21be32c98b 68
highroads 0:3e21be32c98b 69 // add service and characteristic
highroads 0:3e21be32c98b 70 blePeripheral.addAttribute(uartService);
highroads 0:3e21be32c98b 71 blePeripheral.addAttribute(rxCharacteristic);
highroads 0:3e21be32c98b 72 blePeripheral.addAttribute(txCharacteristic);
highroads 0:3e21be32c98b 73
highroads 0:3e21be32c98b 74 // begin initialization
highroads 0:3e21be32c98b 75 blePeripheral.begin();
highroads 0:3e21be32c98b 76 /*---------------------------------------------------------------*/
highroads 0:3e21be32c98b 77
highroads 0:3e21be32c98b 78 serial.printf("BLE UART Peripheral begin!\r\n");
highroads 0:3e21be32c98b 79
highroads 0:3e21be32c98b 80 while(1)
highroads 0:3e21be32c98b 81 {
highroads 0:3e21be32c98b 82 BLECentral central = blePeripheral.central();
highroads 0:3e21be32c98b 83
highroads 0:3e21be32c98b 84 if (central)
highroads 0:3e21be32c98b 85 {
highroads 0:3e21be32c98b 86 // central connected to peripheral
highroads 0:3e21be32c98b 87 serial.printf("Connected to central\r\n");
highroads 0:3e21be32c98b 88
highroads 0:3e21be32c98b 89 while (central.connected())
highroads 0:3e21be32c98b 90 {
highroads 0:3e21be32c98b 91 // central still connected to peripheral
highroads 0:3e21be32c98b 92 if (rxCharacteristic.written())
highroads 0:3e21be32c98b 93 {
highroads 0:3e21be32c98b 94 unsigned char rxlen = rxCharacteristic.valueLength();
highroads 0:3e21be32c98b 95 const unsigned char *val = rxCharacteristic.value();
highroads 0:3e21be32c98b 96 serial.printf("didCharacteristicWritten, Length: %d\r\n", rxlen);
highroads 0:3e21be32c98b 97 unsigned char i = 0;
highroads 0:3e21be32c98b 98 while(i<rxlen)
highroads 0:3e21be32c98b 99 {
highroads 0:3e21be32c98b 100 serial.printf("%d, ",val[i++]);
highroads 0:3e21be32c98b 101 }
highroads 0:3e21be32c98b 102 serial.printf("\r\n");
highroads 0:3e21be32c98b 103 }
highroads 0:3e21be32c98b 104
highroads 0:3e21be32c98b 105 if(serial.readable()) // Do not spend much time on doing other things when serial available! Otherwisee, data will lose.
highroads 0:3e21be32c98b 106 {
highroads 0:3e21be32c98b 107 if(!count_on)
highroads 0:3e21be32c98b 108 {
highroads 0:3e21be32c98b 109 count_on = 1;
highroads 0:3e21be32c98b 110 }
highroads 0:3e21be32c98b 111 interval = 0;
highroads 0:3e21be32c98b 112 txbuf[txlen] = serial.getc();
highroads 0:3e21be32c98b 113 txlen++;
highroads 0:3e21be32c98b 114 }
highroads 0:3e21be32c98b 115
highroads 0:3e21be32c98b 116 if(count_on) // Count the interval after receiving a new char from terminate
highroads 0:3e21be32c98b 117 {
highroads 0:3e21be32c98b 118 interval++;
highroads 0:3e21be32c98b 119 }
highroads 0:3e21be32c98b 120
highroads 0:3e21be32c98b 121 if(interval == 10) // If there is no char available last the interval, send the received chars to central.
highroads 0:3e21be32c98b 122 {
highroads 0:3e21be32c98b 123 interval = 0;
highroads 0:3e21be32c98b 124 count_on = 0;
highroads 0:3e21be32c98b 125
highroads 0:3e21be32c98b 126 serial.printf("Received from terminal: %d bytes\r\n", txlen);
highroads 0:3e21be32c98b 127 txCharacteristic.setValue((const unsigned char *)txbuf, txlen);
highroads 0:3e21be32c98b 128 txlen = 0;
highroads 0:3e21be32c98b 129 }
highroads 0:3e21be32c98b 130 }
highroads 0:3e21be32c98b 131
highroads 0:3e21be32c98b 132 // central disconnected
highroads 0:3e21be32c98b 133 serial.printf("Disconnected from central\r\n");
highroads 0:3e21be32c98b 134 }
highroads 0:3e21be32c98b 135 }
highroads 0:3e21be32c98b 136 }