Drew Barbier / RFDuino

mbed library to connect to rfduino

Dependents:   RFDuino_example

RFDuino.cpp@0:af5f495861b2, 2014-01-06 (annotated)

Committer:
dbarbi1
Date:
Mon Jan 06 15:50:16 2014 +0000
Revision:
0:af5f495861b2
Child:
2:effa15a46f51
RFDuino library. ; ; **Requires associated RFDuino sketch;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dbarbi1 0:af5f495861b2 1 #include "RFDuino.h"
dbarbi1 0:af5f495861b2 2
dbarbi1 0:af5f495861b2 3 //Commands
dbarbi1 0:af5f495861b2 4 #define HANDSHAKE 0x11
dbarbi1 0:af5f495861b2 5 #define CONNECTED 0x22
dbarbi1 0:af5f495861b2 6 #define TRANSMIT 0x33
dbarbi1 0:af5f495861b2 7 #define RECEIVE 0x44
dbarbi1 0:af5f495861b2 8
dbarbi1 0:af5f495861b2 9
dbarbi1 0:af5f495861b2 10
dbarbi1 0:af5f495861b2 11 RFDuino::RFDuino(PinName tx, PinName rx): rfd(tx,rx) {
dbarbi1 0:af5f495861b2 12 //init
dbarbi1 0:af5f495861b2 13 dataFlag=false;
dbarbi1 0:af5f495861b2 14 //attach Serial isr
dbarbi1 0:af5f495861b2 15 rfd.attach(this, &RFDuino::receive_isr);
dbarbi1 0:af5f495861b2 16 }
dbarbi1 0:af5f495861b2 17
dbarbi1 0:af5f495861b2 18
dbarbi1 0:af5f495861b2 19
dbarbi1 0:af5f495861b2 20 //rfduino seems to take a few seconds to be ready
dbarbi1 0:af5f495861b2 21 //for serial comm
dbarbi1 0:af5f495861b2 22 bool RFDuino::handshake() {
dbarbi1 0:af5f495861b2 23 unsigned char temp = 0;
dbarbi1 0:af5f495861b2 24 __disable_irq();
dbarbi1 0:af5f495861b2 25
dbarbi1 0:af5f495861b2 26 rfd.putc(HANDSHAKE);
dbarbi1 0:af5f495861b2 27 wait(0.1);
dbarbi1 0:af5f495861b2 28 if(rfd.readable()) {
dbarbi1 0:af5f495861b2 29 temp = rfd.getc();
dbarbi1 0:af5f495861b2 30 }
dbarbi1 0:af5f495861b2 31 __enable_irq();
dbarbi1 0:af5f495861b2 32 if(temp) { return 1;}
dbarbi1 0:af5f495861b2 33 else { return 0;};
dbarbi1 0:af5f495861b2 34
dbarbi1 0:af5f495861b2 35
dbarbi1 0:af5f495861b2 36 }
dbarbi1 0:af5f495861b2 37
dbarbi1 0:af5f495861b2 38 bool RFDuino::dataReady() {
dbarbi1 0:af5f495861b2 39 return dataFlag;
dbarbi1 0:af5f495861b2 40 }
dbarbi1 0:af5f495861b2 41
dbarbi1 0:af5f495861b2 42 bool RFDuino::isConnected() {
dbarbi1 0:af5f495861b2 43 unsigned char temp;
dbarbi1 0:af5f495861b2 44 __disable_irq();
dbarbi1 0:af5f495861b2 45
dbarbi1 0:af5f495861b2 46 rfd.putc(CONNECTED);
dbarbi1 0:af5f495861b2 47 temp = rfd.getc();
dbarbi1 0:af5f495861b2 48
dbarbi1 0:af5f495861b2 49
dbarbi1 0:af5f495861b2 50 __enable_irq();
dbarbi1 0:af5f495861b2 51 return temp;
dbarbi1 0:af5f495861b2 52 }
dbarbi1 0:af5f495861b2 53
dbarbi1 0:af5f495861b2 54
dbarbi1 0:af5f495861b2 55
dbarbi1 0:af5f495861b2 56
dbarbi1 0:af5f495861b2 57 //needs to be less than 255 bytes
dbarbi1 0:af5f495861b2 58 void RFDuino::transmit(unsigned char* buff, int len) {
dbarbi1 0:af5f495861b2 59 int i;
dbarbi1 0:af5f495861b2 60 __disable_irq();
dbarbi1 0:af5f495861b2 61
dbarbi1 0:af5f495861b2 62 //send command
dbarbi1 0:af5f495861b2 63 rfd.putc(TRANSMIT);
dbarbi1 0:af5f495861b2 64 rfd.putc((unsigned char)len);
dbarbi1 0:af5f495861b2 65 for(i=0;i<len;i++) {
dbarbi1 0:af5f495861b2 66 rfd.putc(buff[i]);
dbarbi1 0:af5f495861b2 67 }
dbarbi1 0:af5f495861b2 68
dbarbi1 0:af5f495861b2 69 __enable_irq();
dbarbi1 0:af5f495861b2 70 }
dbarbi1 0:af5f495861b2 71
dbarbi1 0:af5f495861b2 72
dbarbi1 0:af5f495861b2 73 int RFDuino::copyData(unsigned char* buff, int size) {
dbarbi1 0:af5f495861b2 74
dbarbi1 0:af5f495861b2 75 memcpy(buff, data.buff, size/*data.len*/);
dbarbi1 0:af5f495861b2 76 dataFlag = false;
dbarbi1 0:af5f495861b2 77
dbarbi1 0:af5f495861b2 78 return data.len;
dbarbi1 0:af5f495861b2 79 }
dbarbi1 0:af5f495861b2 80
dbarbi1 0:af5f495861b2 81 void RFDuino::receive_isr() {
dbarbi1 0:af5f495861b2 82
dbarbi1 0:af5f495861b2 83 if(rfd.getc() == RECEIVE) {
dbarbi1 0:af5f495861b2 84 data.len = (int)rfd.getc();
dbarbi1 0:af5f495861b2 85 for(int i=0;i<data.len;i++) {
dbarbi1 0:af5f495861b2 86 data.buff[i] = rfd.getc();
dbarbi1 0:af5f495861b2 87 }
dbarbi1 0:af5f495861b2 88 //handshake
dbarbi1 0:af5f495861b2 89 //rfd.putc(HANDSHAKE);
dbarbi1 0:af5f495861b2 90
dbarbi1 0:af5f495861b2 91 dataFlag=true;
dbarbi1 0:af5f495861b2 92 } else {
dbarbi1 0:af5f495861b2 93 //we dont know this command, read and disregard
dbarbi1 0:af5f495861b2 94 while(rfd.readable()) {
dbarbi1 0:af5f495861b2 95 rfd.getc();
dbarbi1 0:af5f495861b2 96 }
dbarbi1 0:af5f495861b2 97 }
dbarbi1 0:af5f495861b2 98
dbarbi1 0:af5f495861b2 99 }
dbarbi1 0:af5f495861b2 100
dbarbi1 0:af5f495861b2 101
dbarbi1 0:af5f495861b2 102
dbarbi1 0:af5f495861b2 103
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dbarbi1 0:af5f495861b2 105