i-Smarties/BTLE
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This commit is contained in:
Pavel Brychta 2018-07-20 20:50:01 +02:00
parent 84d90279db
commit f1502f2d29
1 changed files with 83 additions and 3 deletions
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86
BTLE.cpp
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@ -1,5 +1,6 @@
/*
* Copyright (C) 2013 Florian Echtler <floe@butterbrot.org>
* Eddystone part Copyright (c) 2018 Pavel Brychta <pablo@xpablo.cz>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@ -19,6 +20,36 @@ const uint8_t frequency[3] = { 2,26,80}; // physical frequency (2400+x MHz)
#define month(m) month_lookup[ (( ((( (m[0] % 24) * 13) + m[1]) % 24) * 13) + m[2]) % 24 ]
const uint8_t month_lookup[24] = { 0,6,0,4,0,1,0,17,0,8,0,0,3,0,0,0,18,2,16,5,9,0,1,7 };
const char PR0[] PROGMEM = "http://www.";
const char PR1[] PROGMEM = "https://www.";
const char PR2[] PROGMEM = "http://";
const char PR3[] PROGMEM = "https://";
const char * const prefixes[] PROGMEM = {
PR0, PR1, PR2, PR3,
};
#define NUM_PREFIXES (sizeof(prefixes) / sizeof(char *))
const char SU0[] PROGMEM = ".com/";
const char SU1[] PROGMEM = ".org/";
const char SU2[] PROGMEM = ".edu/";
const char SU3[] PROGMEM = ".net/";
const char SU4[] PROGMEM = ".info/";
const char SU5[] PROGMEM = ".biz/";
const char SU6[] PROGMEM = ".gov/";
const char SU7[] PROGMEM = ".com";
const char SU8[] PROGMEM = ".org";
const char SU9[] PROGMEM = ".edu";
const char SU10[] PROGMEM = ".net";
const char SU11[] PROGMEM = ".info";
const char SU12[] PROGMEM = ".biz";
const char SU13[] PROGMEM = ".gov";
const char * const suffixes[] PROGMEM = {
SU0, SU1, SU2, SU3, SU4, SU5, SU6, SU7, SU8, SU9, SU10, SU11, SU12, SU13,
};
#define NUM_SUFFIXES (sizeof(suffixes) / sizeof(char *))
#define MAX_URL_DATA 18
// change buffer contents to "wire bit order"
void BTLE::swapbuf( uint8_t len ) {
@ -52,7 +83,7 @@ BTLE::BTLE( RF24* _radio ):
// Simple converter from arduino float to a nRF_Float.
// Supports values from -167772 to +167772, with two decimal places.
nRF_Float
nRF_Float
BTLE::to_nRF_Float(float t) {
int32_t ret;
int32_t exponent = -2;
@ -103,7 +134,7 @@ bool BTLE::advertise( void* buf, uint8_t buflen ) {
}
// Broadcast an advertisement packet with a specific data type
// Standardized data types can be seen here:
// Standardized data types can be seen here:
// https://www.bluetooth.org/en-us/specification/assigned-numbers/generic-access-profile
bool BTLE::advertise( uint8_t data_type, void* buf, uint8_t buflen ) {
// name & total payload size
@ -184,7 +215,7 @@ bool BTLE::listen(int timeout) {
// decode: swap bit order, un-whiten
swapbuf( sizeof(buffer) );
whiten( sizeof(buffer) );
// size is w/o header+CRC -> add 2 bytes header
total_size = inbuf[1]+2;
uint8_t in_crc[3];
@ -254,3 +285,52 @@ void BTLE::crc( uint8_t len, uint8_t* dst ) {
}
}
}
uint8_t BTLE::encodeURL(uint8_t* encodedUrl, const char *rawUrl)
{
uint8_t urlDataLength = 0;
/*
* Fill with one more 0 than max url data size to ensure its null terminated
* And can be printed out for debug purposes
*/
memset(encodedUrl, 0, MAX_URL_DATA + 1);
if ((rawUrl == NULL) || (strlen(rawUrl) == 0)) {
return urlDataLength;
}
/*
* handle prefix
*/
for (size_t i = 0; i < NUM_PREFIXES; i++) {
size_t prefixLen = strlen_P((char *)pgm_read_word(&prefixes[i]));
if (strncmp_P(rawUrl, (char *)pgm_read_word(&prefixes[i]), prefixLen) == 0) {
encodedUrl[urlDataLength++] = i;
rawUrl += prefixLen;
break;
}
}
/*
* handle suffixes
*/
while (*rawUrl && (urlDataLength <= MAX_URL_DATA)) {
/* check for suffix match */
size_t i;
for (i = 0; i < NUM_SUFFIXES; i++) {
size_t suffixLen = strlen_P((char *)pgm_read_word(&suffixes[i]));
if (strncmp_P(rawUrl, (char *)pgm_read_word(&suffixes[i]), suffixLen) == 0) {
encodedUrl[urlDataLength++] = i;
rawUrl += suffixLen;
break; /* from the for loop for checking against suffixes */
}
}
/* This is the default case where we've got an ordinary character which doesn't match a suffix. */
if (i == NUM_SUFFIXES) {
encodedUrl[urlDataLength++] = *rawUrl;
++rawUrl;
}
}
return urlDataLength;
}