Adafruit Bluefruit with KL25Z sending MMA8451Q acceleration data over BLE UART to Nordic oder Adafruit app
Dependencies: BLE_nRF8001 MMA8451Q mbed
Fork of BLE_KL25_nRF8001 by
main.cpp@7:447042d1d562, 2017-03-12 (annotated)
- Committer:
- highroads
- Date:
- Sun Mar 12 14:19:59 2017 +0000
- Revision:
- 7:447042d1d562
- Parent:
- 6:7b16a72aebe8
For use with Nordic or Bluefruit LE apps.; Output accelerometer Z value every two seconds when connected to central.
Who changed what in which revision?
User | Revision | Line number | New 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 | 7:447042d1d562 | 30 | #include "MMA8451Q.h" |
highroads | 7:447042d1d562 | 31 | #include "stdio.h" |
highroads | 7:447042d1d562 | 32 | |
highroads | 7:447042d1d562 | 33 | #define MMA8451_I2C_ADDRESS (0x1d<<1) |
highroads | 7:447042d1d562 | 34 | |
highroads | 0:3e21be32c98b | 35 | |
highroads | 0:3e21be32c98b | 36 | Serial serial(USBTX, USBRX); |
highroads | 0:3e21be32c98b | 37 | |
highroads | 0:3e21be32c98b | 38 | // The SPI construct, REQN and RDYN IO construct should be modified manually |
highroads | 0:3e21be32c98b | 39 | // It depend on the board you are using and the REQN&RDYN configuration on BLE Shield |
highroads | 0:3e21be32c98b | 40 | // config for KL25Z |
highroads | 3:b5dc2454dfc3 | 41 | // VIN to 5V on KL25 |
highroads | 3:b5dc2454dfc3 | 42 | // GND to GND on KL25 |
highroads | 0:3e21be32c98b | 43 | SPI spi(PTD2, PTD3, PTD1); // MOSI , MISO , SCLK |
highroads | 0:3e21be32c98b | 44 | DigitalInOut BLE_RDY(PTD5); // |
highroads | 0:3e21be32c98b | 45 | DigitalInOut BLE_REQ(PTD0); // |
highroads | 1:b394935d1db1 | 46 | DigitalInOut BLE_RESET(PTA13); |
highroads | 0:3e21be32c98b | 47 | |
highroads | 0:3e21be32c98b | 48 | unsigned char txbuf[16] = {0}; |
highroads | 0:3e21be32c98b | 49 | unsigned char txlen = 0; |
highroads | 7:447042d1d562 | 50 | MMA8451Q acc(PTE25, PTE24, MMA8451_I2C_ADDRESS); |
highroads | 7:447042d1d562 | 51 | Ticker sensor_out; |
highroads | 0:3e21be32c98b | 52 | |
highroads | 4:fb6008860882 | 53 | //*----- BLE Utility -------------------------------------------------------------------------*/ |
highroads | 0:3e21be32c98b | 54 | // create peripheral instance, see pinouts above |
highroads | 5:83be623f6ad4 | 55 | BLEPeripheral blePeripheral = BLEPeripheral(&BLE_REQ, &BLE_RDY, &BLE_RESET); |
highroads | 4:fb6008860882 | 56 | |
highroads | 0:3e21be32c98b | 57 | // create service |
highroads | 7:447042d1d562 | 58 | BLEService uartService = BLEService("6E400001-B5A3-F393-E0A9-E50E24DCCA9E"); |
highroads | 4:fb6008860882 | 59 | |
highroads | 0:3e21be32c98b | 60 | // create characteristic |
highroads | 7:447042d1d562 | 61 | BLECharacteristic txCharacteristic = BLECharacteristic("6E400003-B5A3-F393-E0A9-E50E24DCCA9E", BLENotify, 20); |
highroads | 7:447042d1d562 | 62 | BLECharacteristic rxCharacteristic = BLECharacteristic("6E400002-B5A3-F393-E0A9-E50E24DCCA9E", BLEWriteWithoutResponse, 20); |
highroads | 0:3e21be32c98b | 63 | /*--------------------------------------------------------------------------------------------*/ |
highroads | 5:83be623f6ad4 | 64 | // |
highroads | 6:7b16a72aebe8 | 65 | // Nordic characteristics work with Nordic and Bluefruit LE apps |
highroads | 5:83be623f6ad4 | 66 | // uartService 6E400001-B5A3-F393-E0A9-E50E24DCCA9E |
highroads | 6:7b16a72aebe8 | 67 | // txCharacteristic 6E400003-B5A3-F393-E0A9-E50E24DCCA9E |
highroads | 6:7b16a72aebe8 | 68 | // rxCharacteristic 6E400002-B5A3-F393-E0A9-E50E24DCCA9E |
highroads | 5:83be623f6ad4 | 69 | // RedBearLabs characteristics work with RedBear BLE Controller app |
highroads | 5:83be623f6ad4 | 70 | // uartService 713d0000503e4c75ba943148f18d941e |
highroads | 5:83be623f6ad4 | 71 | // txCharacteristic 713d0002503e4c75ba943148f18d941e |
highroads | 5:83be623f6ad4 | 72 | // rxCharacteristic 713d0003503e4c75ba943148f18d941e |
highroads | 5:83be623f6ad4 | 73 | |
highroads | 5:83be623f6ad4 | 74 | |
highroads | 0:3e21be32c98b | 75 | |
highroads | 0:3e21be32c98b | 76 | unsigned int interval = 0; |
highroads | 0:3e21be32c98b | 77 | unsigned char count_on = 0; |
highroads | 7:447042d1d562 | 78 | void sens() |
highroads | 7:447042d1d562 | 79 | { |
highroads | 7:447042d1d562 | 80 | char sensbuf[16]; |
highroads | 7:447042d1d562 | 81 | char senslen; |
highroads | 7:447042d1d562 | 82 | float accZ = abs(acc.getAccZ()); |
highroads | 7:447042d1d562 | 83 | |
highroads | 7:447042d1d562 | 84 | serial.printf("measured %f \r\n",accZ); |
highroads | 7:447042d1d562 | 85 | sprintf(sensbuf,"%f",accZ); |
highroads | 7:447042d1d562 | 86 | senslen=strlen(sensbuf); |
highroads | 7:447042d1d562 | 87 | txCharacteristic.setValue((const unsigned char *)sensbuf, senslen); |
highroads | 7:447042d1d562 | 88 | } |
highroads | 0:3e21be32c98b | 89 | int main() |
highroads | 0:3e21be32c98b | 90 | { |
highroads | 0:3e21be32c98b | 91 | serial.baud(115200); |
highroads | 0:3e21be32c98b | 92 | serial.printf("Serial begin!\r\n"); |
highroads | 0:3e21be32c98b | 93 | |
highroads | 0:3e21be32c98b | 94 | /*----- BLE Utility ---------------------------------------------*/ |
highroads | 0:3e21be32c98b | 95 | // set advertised local name and service UUID |
highroads | 0:3e21be32c98b | 96 | blePeripheral.setLocalName("BLE Shield"); |
highroads | 0:3e21be32c98b | 97 | |
highroads | 0:3e21be32c98b | 98 | blePeripheral.setAdvertisedServiceUuid(uartService.uuid()); |
highroads | 0:3e21be32c98b | 99 | |
highroads | 0:3e21be32c98b | 100 | // add service and characteristic |
highroads | 0:3e21be32c98b | 101 | blePeripheral.addAttribute(uartService); |
highroads | 0:3e21be32c98b | 102 | blePeripheral.addAttribute(rxCharacteristic); |
highroads | 0:3e21be32c98b | 103 | blePeripheral.addAttribute(txCharacteristic); |
highroads | 0:3e21be32c98b | 104 | |
highroads | 0:3e21be32c98b | 105 | // begin initialization |
highroads | 0:3e21be32c98b | 106 | blePeripheral.begin(); |
highroads | 0:3e21be32c98b | 107 | /*---------------------------------------------------------------*/ |
highroads | 0:3e21be32c98b | 108 | |
highroads | 0:3e21be32c98b | 109 | serial.printf("BLE UART Peripheral begin!\r\n"); |
highroads | 0:3e21be32c98b | 110 | |
highroads | 7:447042d1d562 | 111 | |
highroads | 0:3e21be32c98b | 112 | while(1) |
highroads | 0:3e21be32c98b | 113 | { |
highroads | 0:3e21be32c98b | 114 | BLECentral central = blePeripheral.central(); |
highroads | 0:3e21be32c98b | 115 | |
highroads | 0:3e21be32c98b | 116 | if (central) |
highroads | 0:3e21be32c98b | 117 | { |
highroads | 0:3e21be32c98b | 118 | // central connected to peripheral |
highroads | 0:3e21be32c98b | 119 | serial.printf("Connected to central\r\n"); |
highroads | 7:447042d1d562 | 120 | sensor_out.attach(&sens, 2.0); // the address of the function to be attached (sens) and the interval (2 seconds) |
highroads | 0:3e21be32c98b | 121 | while (central.connected()) |
highroads | 0:3e21be32c98b | 122 | { |
highroads | 7:447042d1d562 | 123 | |
highroads | 0:3e21be32c98b | 124 | // central still connected to peripheral |
highroads | 0:3e21be32c98b | 125 | if (rxCharacteristic.written()) |
highroads | 0:3e21be32c98b | 126 | { |
highroads | 0:3e21be32c98b | 127 | unsigned char rxlen = rxCharacteristic.valueLength(); |
highroads | 0:3e21be32c98b | 128 | const unsigned char *val = rxCharacteristic.value(); |
highroads | 0:3e21be32c98b | 129 | serial.printf("didCharacteristicWritten, Length: %d\r\n", rxlen); |
highroads | 0:3e21be32c98b | 130 | unsigned char i = 0; |
highroads | 0:3e21be32c98b | 131 | while(i<rxlen) |
highroads | 0:3e21be32c98b | 132 | { |
highroads | 0:3e21be32c98b | 133 | serial.printf("%d, ",val[i++]); |
highroads | 0:3e21be32c98b | 134 | } |
highroads | 0:3e21be32c98b | 135 | serial.printf("\r\n"); |
highroads | 0:3e21be32c98b | 136 | } |
highroads | 0:3e21be32c98b | 137 | |
highroads | 0:3e21be32c98b | 138 | if(serial.readable()) // Do not spend much time on doing other things when serial available! Otherwisee, data will lose. |
highroads | 0:3e21be32c98b | 139 | { |
highroads | 0:3e21be32c98b | 140 | if(!count_on) |
highroads | 0:3e21be32c98b | 141 | { |
highroads | 0:3e21be32c98b | 142 | count_on = 1; |
highroads | 0:3e21be32c98b | 143 | } |
highroads | 0:3e21be32c98b | 144 | interval = 0; |
highroads | 0:3e21be32c98b | 145 | txbuf[txlen] = serial.getc(); |
highroads | 0:3e21be32c98b | 146 | txlen++; |
highroads | 0:3e21be32c98b | 147 | } |
highroads | 0:3e21be32c98b | 148 | |
highroads | 0:3e21be32c98b | 149 | if(count_on) // Count the interval after receiving a new char from terminate |
highroads | 0:3e21be32c98b | 150 | { |
highroads | 0:3e21be32c98b | 151 | interval++; |
highroads | 0:3e21be32c98b | 152 | } |
highroads | 0:3e21be32c98b | 153 | |
highroads | 0:3e21be32c98b | 154 | if(interval == 10) // If there is no char available last the interval, send the received chars to central. |
highroads | 0:3e21be32c98b | 155 | { |
highroads | 0:3e21be32c98b | 156 | interval = 0; |
highroads | 0:3e21be32c98b | 157 | count_on = 0; |
highroads | 0:3e21be32c98b | 158 | |
highroads | 0:3e21be32c98b | 159 | serial.printf("Received from terminal: %d bytes\r\n", txlen); |
highroads | 0:3e21be32c98b | 160 | txCharacteristic.setValue((const unsigned char *)txbuf, txlen); |
highroads | 0:3e21be32c98b | 161 | txlen = 0; |
highroads | 0:3e21be32c98b | 162 | } |
highroads | 0:3e21be32c98b | 163 | } |
highroads | 0:3e21be32c98b | 164 | |
highroads | 0:3e21be32c98b | 165 | // central disconnected |
highroads | 7:447042d1d562 | 166 | sensor_out.detach(); |
highroads | 0:3e21be32c98b | 167 | serial.printf("Disconnected from central\r\n"); |
highroads | 0:3e21be32c98b | 168 | } |
highroads | 0:3e21be32c98b | 169 | } |
highroads | 0:3e21be32c98b | 170 | } |