Nigel Leitzell / Mbed 2 deprecated SmartHomeMobileBoard

The Smart Home Mobileboard project demonstrates successful communication using the integrated RF module header on the FRDM-K64F board as well as the serial port for UART communication to the serial terminal. The Smart Home project ultimately is based on creating an automated home controlled either by the mobile board (i.e. wearable device) or the Smart Home Bluetooth App designed in MIT App Inventor 2. This project was completed for ECE533 class within the IUPUI Purdue School of Engineering.

Dependencies:   FXOS8700Q mbed nRF24L01P

main.cpp@0:b709611436a1, 2016-12-16 (annotated)

Committer:
haircules
Date:
Fri Dec 16 20:37:06 2016 +0000
Revision:
0:b709611436a1
This version of the Smart Home Mobile Board allows the user to send accelerometer data to the Base Board via RF Module when button is pressed.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
haircules 0:b709611436a1 1 /* FXOS8700Q Example Program
haircules 0:b709611436a1 2 * Copyright (c) 2014-2015 ARM Limited
haircules 0:b709611436a1 3 *
haircules 0:b709611436a1 4 * Licensed under the Apache License, Version 2.0 (the "License");
haircules 0:b709611436a1 5 * you may not use this file except in compliance with the License.
haircules 0:b709611436a1 6 * You may obtain a copy of the License at
haircules 0:b709611436a1 7 *
haircules 0:b709611436a1 8 * http://www.apache.org/licenses/LICENSE-2.0
haircules 0:b709611436a1 9 *
haircules 0:b709611436a1 10 * Unless required by applicable law or agreed to in writing, software
haircules 0:b709611436a1 11 * distributed under the License is distributed on an "AS IS" BASIS,
haircules 0:b709611436a1 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
haircules 0:b709611436a1 13 * See the License for the specific language governing permissions and
haircules 0:b709611436a1 14 * limitations under the License.
haircules 0:b709611436a1 15 */
haircules 0:b709611436a1 16
haircules 0:b709611436a1 17 #include "mbed.h"
haircules 0:b709611436a1 18 #include "FXOS8700Q.h"
haircules 0:b709611436a1 19 #include "nRF24L01P.h"
haircules 0:b709611436a1 20 #include <string.h>
haircules 0:b709611436a1 21 #include <stdlib.h>
haircules 0:b709611436a1 22 #include <stdio.h>
haircules 0:b709611436a1 23
haircules 0:b709611436a1 24 /*Pin Declarations*/
haircules 0:b709611436a1 25 Serial pc(USBTX, USBRX);
haircules 0:b709611436a1 26 I2C i2c(PTE25, PTE24);
haircules 0:b709611436a1 27 FXOS8700QAccelerometer acc(i2c, FXOS8700CQ_SLAVE_ADDR1); // Configured for the FRDM-K64F with onboard sensors
haircules 0:b709611436a1 28 DigitalIn sw3(SW3); //Enable button for sending data
haircules 0:b709611436a1 29
haircules 0:b709611436a1 30 /*RF Module Instantiations*/
haircules 0:b709611436a1 31 nRF24L01P my_nrf24l01p (PTD6,PTD7,PTD5,PTD4,PTB20,PTC18); // mosi, miso, sck, csn, ce, irq
haircules 0:b709611436a1 32
haircules 0:b709611436a1 33 DigitalOut myled1(LED1);
haircules 0:b709611436a1 34 DigitalOut myled2(LED2);
haircules 0:b709611436a1 35
haircules 0:b709611436a1 36 /*Function Prototypes*/
haircules 0:b709611436a1 37 void packetize(int16_t raX, int16_t raY, int16_t raZ, char* buffer);
haircules 0:b709611436a1 38
haircules 0:b709611436a1 39 int main(void)
haircules 0:b709611436a1 40 {
haircules 0:b709611436a1 41
haircules 0:b709611436a1 42 #define TRANSFER_SIZE 15
haircules 0:b709611436a1 43
haircules 0:b709611436a1 44 int16_t raX, raY, raZ;
haircules 0:b709611436a1 45
haircules 0:b709611436a1 46 char buffer[TRANSFER_SIZE];/*first char is sign, the rest are ints*/
haircules 0:b709611436a1 47
haircules 0:b709611436a1 48 my_nrf24l01p.powerUp();
haircules 0:b709611436a1 49
haircules 0:b709611436a1 50 // Display the (default) setup of the nRF24L01+ chip
haircules 0:b709611436a1 51 pc.printf( "nRF24L01+ Frequency : %d MHz\r\n", my_nrf24l01p.getRfFrequency() );
haircules 0:b709611436a1 52 pc.printf( "nRF24L01+ Output power : %d dBm\r\n", my_nrf24l01p.getRfOutputPower() );
haircules 0:b709611436a1 53 pc.printf( "nRF24L01+ Data Rate : %d kbps\r\n", my_nrf24l01p.getAirDataRate() );
haircules 0:b709611436a1 54 pc.printf( "nRF24L01+ TX Address : 0x%010llX\r\n", my_nrf24l01p.getTxAddress() );
haircules 0:b709611436a1 55 pc.printf( "nRF24L01+ RX Address : 0x%010llX\r\n", my_nrf24l01p.getRxAddress() );
haircules 0:b709611436a1 56
haircules 0:b709611436a1 57 /*setting intializations and enable of RF module*/
haircules 0:b709611436a1 58 my_nrf24l01p.setTransferSize( TRANSFER_SIZE );
haircules 0:b709611436a1 59 my_nrf24l01p.setReceiveMode();
haircules 0:b709611436a1 60 my_nrf24l01p.enable();
haircules 0:b709611436a1 61
haircules 0:b709611436a1 62 /*enable accelerometer*/
haircules 0:b709611436a1 63 acc.enable();
haircules 0:b709611436a1 64
haircules 0:b709611436a1 65
haircules 0:b709611436a1 66 while (true) {
haircules 0:b709611436a1 67
haircules 0:b709611436a1 68 /* get accelerometer data*/
haircules 0:b709611436a1 69 acc.getX(raX);
haircules 0:b709611436a1 70 acc.getY(raY);
haircules 0:b709611436a1 71 acc.getZ(raZ);
haircules 0:b709611436a1 72
haircules 0:b709611436a1 73 /*print data to terminal*/
haircules 0:b709611436a1 74 printf("ACC: X=%d Y=%d Z=%d \r\n", raX, raY, raZ);
haircules 0:b709611436a1 75
haircules 0:b709611436a1 76 /*packetize data to be sent*/
haircules 0:b709611436a1 77 packetize(raX,raY,raZ,buffer);
haircules 0:b709611436a1 78
haircules 0:b709611436a1 79
haircules 0:b709611436a1 80 if(!sw3){/*only send data via RF module when sw2 button is held*/
haircules 0:b709611436a1 81
haircules 0:b709611436a1 82 /* Send the transmit buffer via the RF module*/
haircules 0:b709611436a1 83 my_nrf24l01p.write( NRF24L01P_PIPE_P0, buffer, TRANSFER_SIZE );
haircules 0:b709611436a1 84
haircules 0:b709611436a1 85 pc.printf( "\n\rData has been sent!\n\r");
haircules 0:b709611436a1 86
haircules 0:b709611436a1 87 }/*end if*/
haircules 0:b709611436a1 88
haircules 0:b709611436a1 89 // Toggle LED1 (to help debug Host -> nRF24L01+ communication)
haircules 0:b709611436a1 90 myled1 = !myled1;
haircules 0:b709611436a1 91
haircules 0:b709611436a1 92 wait(1);
haircules 0:b709611436a1 93
haircules 0:b709611436a1 94 }/*end while*/
haircules 0:b709611436a1 95 }/*end main*/
haircules 0:b709611436a1 96
haircules 0:b709611436a1 97 void packetize(int16_t raX, int16_t raY, int16_t raZ, char* buffer){
haircules 0:b709611436a1 98 /*Packetize is called upon when a char buffer should be loaded to send
haircules 0:b709611436a1 99 data via RF module. In this particular instance the char buffer "buffer"
haircules 0:b709611436a1 100 holds three signed - four digit numbers, therefore the sign of each of the
haircules 0:b709611436a1 101 three numbers are determined first and loaded to it's corresponding index
haircules 0:b709611436a1 102 in buffer. Then, the Thousands, Hundreds, Tens and Ones digits are converted
haircules 0:b709611436a1 103 to ASCII chars by adding the hex ASCII value of 0 to the corresponding digit.*/
haircules 0:b709611436a1 104
haircules 0:b709611436a1 105
haircules 0:b709611436a1 106 /*determine sign char for raX,raY,raZ*/
haircules 0:b709611436a1 107 if(raX >= 0){
haircules 0:b709611436a1 108
haircules 0:b709611436a1 109 buffer[0] = ' ';
haircules 0:b709611436a1 110 }
haircules 0:b709611436a1 111 else{/*raX is negative*/
haircules 0:b709611436a1 112
haircules 0:b709611436a1 113 buffer[0] = '-';
haircules 0:b709611436a1 114
haircules 0:b709611436a1 115 raX = raX * (-1);/*get the absolute value of raX*/
haircules 0:b709611436a1 116
haircules 0:b709611436a1 117 }
haircules 0:b709611436a1 118 if(raY >= 0){ /*determine sign char*/
haircules 0:b709611436a1 119
haircules 0:b709611436a1 120 buffer[5] = ' ';
haircules 0:b709611436a1 121 }
haircules 0:b709611436a1 122 else{/*raY is negative*/
haircules 0:b709611436a1 123
haircules 0:b709611436a1 124 buffer[5] = '-';
haircules 0:b709611436a1 125
haircules 0:b709611436a1 126 raY = raY * (-1);/*get the absolute value of raY*/
haircules 0:b709611436a1 127
haircules 0:b709611436a1 128 }
haircules 0:b709611436a1 129 if(raZ >= 0){ /*determine sign char*/
haircules 0:b709611436a1 130
haircules 0:b709611436a1 131 buffer[10] = ' ';
haircules 0:b709611436a1 132 }
haircules 0:b709611436a1 133 else{/*raZ is negative*/
haircules 0:b709611436a1 134
haircules 0:b709611436a1 135 buffer[10] = '-';
haircules 0:b709611436a1 136
haircules 0:b709611436a1 137 raZ = raZ * (-1);/*get the absolute value of raZ*/
haircules 0:b709611436a1 138
haircules 0:b709611436a1 139 }
haircules 0:b709611436a1 140
haircules 0:b709611436a1 141 /*int to string for raX,raY,raZ*/
haircules 0:b709611436a1 142 /*raX*/
haircules 0:b709611436a1 143 buffer[1] = (raX/1000)+'0'; /*thousands char*/
haircules 0:b709611436a1 144 raX = raX % 1000;
haircules 0:b709611436a1 145 buffer[2] = (raX/100) + '0';/*hundreds char*/
haircules 0:b709611436a1 146 raX = raX % 100;
haircules 0:b709611436a1 147 buffer[3] = (raX/10) + '0'; /*tens char*/
haircules 0:b709611436a1 148 raX = raX % 10;
haircules 0:b709611436a1 149 buffer[4] = raX + '0'; /*ones char*/
haircules 0:b709611436a1 150
haircules 0:b709611436a1 151 /*raY*/
haircules 0:b709611436a1 152 buffer[6] = (raY/1000)+'0'; /*thousands char*/
haircules 0:b709611436a1 153 raY = raY % 1000;
haircules 0:b709611436a1 154 buffer[7] = (raY/100) + '0';/*hundreds char*/
haircules 0:b709611436a1 155 raY = raY % 100;
haircules 0:b709611436a1 156 buffer[8] = (raY/10) + '0'; /*tens char*/
haircules 0:b709611436a1 157 raY = raY % 10;
haircules 0:b709611436a1 158 buffer[9] = raY + '0'; /*ones char*/
haircules 0:b709611436a1 159
haircules 0:b709611436a1 160 /*raZ*/
haircules 0:b709611436a1 161 buffer[11] = (raZ/1000)+'0'; /*thousands char*/
haircules 0:b709611436a1 162 raZ = raZ % 1000;
haircules 0:b709611436a1 163 buffer[12] = (raZ/100) + '0';/*hundreds char*/
haircules 0:b709611436a1 164 raZ = raZ % 100;
haircules 0:b709611436a1 165 buffer[13] = (raZ/10) + '0'; /*tens char*/
haircules 0:b709611436a1 166 raZ = raZ % 10;
haircules 0:b709611436a1 167 buffer[14] = raZ + '0'; /*ones char*/
haircules 0:b709611436a1 168
haircules 0:b709611436a1 169 }/*end packetize()*/