Drew Barbier / RFDuino

mbed library to connect to rfduino

Dependents:   RFDuino_example

RFDuino.cpp@3:aac9193b7fd3, 2014-01-07 (annotated)

Committer:
dbarbi1
Date:
Tue Jan 07 23:36:17 2014 +0000
Revision:
3:aac9193b7fd3
Parent:
2:effa15a46f51
Child:
4:7cbe6036c44e
now with working comments :)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dbarbi1 2:effa15a46f51 1 /** RFDuino is used for connecting an mbed to rfduino
dbarbi1 2:effa15a46f51 2 *
dbarbi1 2:effa15a46f51 3 */
dbarbi1 2:effa15a46f51 4
dbarbi1 3:aac9193b7fd3 5 #include "RFDuino.h"
dbarbi1 3:aac9193b7fd3 6
dbarbi1 0:af5f495861b2 7 //Commands
dbarbi1 0:af5f495861b2 8 #define HANDSHAKE 0x11
dbarbi1 0:af5f495861b2 9 #define CONNECTED 0x22
dbarbi1 0:af5f495861b2 10 #define TRANSMIT 0x33
dbarbi1 0:af5f495861b2 11 #define RECEIVE 0x44
dbarbi1 0:af5f495861b2 12
dbarbi1 2:effa15a46f51 13 /** Initializes RFDuino. Configures Pins tx and rx for serial communication
dbarbi1 2:effa15a46f51 14 * and creats associated ISR
dbarbi1 2:effa15a46f51 15 */
dbarbi1 0:af5f495861b2 16 RFDuino::RFDuino(PinName tx, PinName rx): rfd(tx,rx) {
dbarbi1 0:af5f495861b2 17 //init
dbarbi1 0:af5f495861b2 18 dataFlag=false;
dbarbi1 0:af5f495861b2 19 //attach Serial isr
dbarbi1 0:af5f495861b2 20 rfd.attach(this, &RFDuino::receive_isr);
dbarbi1 0:af5f495861b2 21 }
dbarbi1 0:af5f495861b2 22
dbarbi1 0:af5f495861b2 23
dbarbi1 0:af5f495861b2 24
dbarbi1 2:effa15a46f51 25 /** handshake()
dbarbi1 2:effa15a46f51 26 *
dbarbi1 2:effa15a46f51 27 * @returns
dbarbi1 2:effa15a46f51 28 * 1 on succesfull RFDuino serial reply to Handshake command
dbarbi1 2:effa15a46f51 29 * 0 on unsuccesfull RFDuino serial reply to Handshake command
dbarbi1 2:effa15a46f51 30 */
dbarbi1 0:af5f495861b2 31 bool RFDuino::handshake() {
dbarbi1 0:af5f495861b2 32 unsigned char temp = 0;
dbarbi1 0:af5f495861b2 33 __disable_irq();
dbarbi1 0:af5f495861b2 34
dbarbi1 0:af5f495861b2 35 rfd.putc(HANDSHAKE);
dbarbi1 0:af5f495861b2 36 wait(0.1);
dbarbi1 0:af5f495861b2 37 if(rfd.readable()) {
dbarbi1 0:af5f495861b2 38 temp = rfd.getc();
dbarbi1 0:af5f495861b2 39 }
dbarbi1 0:af5f495861b2 40 __enable_irq();
dbarbi1 0:af5f495861b2 41 if(temp) { return 1;}
dbarbi1 0:af5f495861b2 42 else { return 0;};
dbarbi1 0:af5f495861b2 43
dbarbi1 0:af5f495861b2 44
dbarbi1 0:af5f495861b2 45 }
dbarbi1 0:af5f495861b2 46
dbarbi1 2:effa15a46f51 47 /** dataReady()
dbarbi1 2:effa15a46f51 48 *
dbarbi1 2:effa15a46f51 49 * @returns
dbarbi1 2:effa15a46f51 50 * 1 if RFDuino has unread data
dbarbi1 2:effa15a46f51 51 * 0 if RFDuino does not have unread data
dbarbi1 2:effa15a46f51 52 */
dbarbi1 0:af5f495861b2 53 bool RFDuino::dataReady() {
dbarbi1 0:af5f495861b2 54 return dataFlag;
dbarbi1 0:af5f495861b2 55 }
dbarbi1 0:af5f495861b2 56
dbarbi1 2:effa15a46f51 57 /** isConnected()
dbarbi1 2:effa15a46f51 58 *
dbarbi1 2:effa15a46f51 59 * @returns
dbarbi1 2:effa15a46f51 60 * 1 if the RFDuino has made a successful Bluetooth Connection
dbarbi1 2:effa15a46f51 61 * 0 if the RFDuino has not made a successful Bluetooth Connection
dbarbi1 2:effa15a46f51 62 */
dbarbi1 0:af5f495861b2 63 bool RFDuino::isConnected() {
dbarbi1 0:af5f495861b2 64 unsigned char temp;
dbarbi1 0:af5f495861b2 65 __disable_irq();
dbarbi1 0:af5f495861b2 66
dbarbi1 0:af5f495861b2 67 rfd.putc(CONNECTED);
dbarbi1 0:af5f495861b2 68 temp = rfd.getc();
dbarbi1 0:af5f495861b2 69
dbarbi1 0:af5f495861b2 70 __enable_irq();
dbarbi1 0:af5f495861b2 71 return temp;
dbarbi1 0:af5f495861b2 72 }
dbarbi1 0:af5f495861b2 73
dbarbi1 0:af5f495861b2 74
dbarbi1 0:af5f495861b2 75
dbarbi1 0:af5f495861b2 76
dbarbi1 2:effa15a46f51 77 /** transmit(buff, len)
dbarbi1 2:effa15a46f51 78 *
dbarbi1 2:effa15a46f51 79 * @param buff pointer to a byte buffer
dbarbi1 2:effa15a46f51 80 * @param len length of byte buffer to transmit
dbarbi1 2:effa15a46f51 81 */
dbarbi1 0:af5f495861b2 82 void RFDuino::transmit(unsigned char* buff, int len) {
dbarbi1 0:af5f495861b2 83 int i;
dbarbi1 0:af5f495861b2 84 __disable_irq();
dbarbi1 0:af5f495861b2 85
dbarbi1 0:af5f495861b2 86 //send command
dbarbi1 0:af5f495861b2 87 rfd.putc(TRANSMIT);
dbarbi1 0:af5f495861b2 88 rfd.putc((unsigned char)len);
dbarbi1 0:af5f495861b2 89 for(i=0;i<len;i++) {
dbarbi1 0:af5f495861b2 90 rfd.putc(buff[i]);
dbarbi1 0:af5f495861b2 91 }
dbarbi1 0:af5f495861b2 92
dbarbi1 0:af5f495861b2 93 __enable_irq();
dbarbi1 0:af5f495861b2 94 }
dbarbi1 0:af5f495861b2 95
dbarbi1 2:effa15a46f51 96 /** copyData(buff, size)
dbarbi1 2:effa15a46f51 97 *
dbarbi1 2:effa15a46f51 98 * @param buff pointer to a byte buffer
dbarbi1 2:effa15a46f51 99 * @param size size of buffer to copy data into
dbarbi1 2:effa15a46f51 100 *
dbarbi1 2:effa15a46f51 101 * @return size of data in RFDuino buffer
dbarbi1 2:effa15a46f51 102 */
dbarbi1 0:af5f495861b2 103 int RFDuino::copyData(unsigned char* buff, int size) {
dbarbi1 0:af5f495861b2 104
dbarbi1 2:effa15a46f51 105 __disable_irq();
dbarbi1 0:af5f495861b2 106 memcpy(buff, data.buff, size/*data.len*/);
dbarbi1 2:effa15a46f51 107 __enable_irq();
dbarbi1 0:af5f495861b2 108 dataFlag = false;
dbarbi1 0:af5f495861b2 109
dbarbi1 0:af5f495861b2 110 return data.len;
dbarbi1 0:af5f495861b2 111 }
dbarbi1 0:af5f495861b2 112
dbarbi1 2:effa15a46f51 113 /** receiv_isr
dbarbi1 2:effa15a46f51 114 *Serial ISR. Checks for Receive command, and reads data into buffer
dbarbi1 2:effa15a46f51 115 */
dbarbi1 0:af5f495861b2 116 void RFDuino::receive_isr() {
dbarbi1 0:af5f495861b2 117
dbarbi1 0:af5f495861b2 118 if(rfd.getc() == RECEIVE) {
dbarbi1 0:af5f495861b2 119 data.len = (int)rfd.getc();
dbarbi1 0:af5f495861b2 120 for(int i=0;i<data.len;i++) {
dbarbi1 0:af5f495861b2 121 data.buff[i] = rfd.getc();
dbarbi1 0:af5f495861b2 122 }
dbarbi1 0:af5f495861b2 123
dbarbi1 0:af5f495861b2 124 dataFlag=true;
dbarbi1 0:af5f495861b2 125 } else {
dbarbi1 0:af5f495861b2 126 //we dont know this command, read and disregard
dbarbi1 0:af5f495861b2 127 while(rfd.readable()) {
dbarbi1 0:af5f495861b2 128 rfd.getc();
dbarbi1 0:af5f495861b2 129 }
dbarbi1 0:af5f495861b2 130 }
dbarbi1 0:af5f495861b2 131
dbarbi1 0:af5f495861b2 132 }
dbarbi1 0:af5f495861b2 133
dbarbi1 0:af5f495861b2 134
dbarbi1 0:af5f495861b2 135
dbarbi1 0:af5f495861b2 136
dbarbi1 0:af5f495861b2 137
dbarbi1 0:af5f495861b2 138