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RDSDecoder.cpp
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/* Arduino RDS/RBDS (IEC 62016/NRSC-4-B) Decoding Library
* See the README file for author and licensing information. In case it's
* missing from your distribution, use the one here as the authoritative
* version: https://github.com/csdexter/RDSDecoder/blob/master/README
*
* This library is for decoding RDS/RBDS data streams (groups).
* See the example sketches to learn how to use the library in your code.
*
* This is the main code file for the library.
* See the header file for better function documentation.
*/
#include "RDSDecoder.h"
#include "RDSDecoder-private.h"
#include "iso14819-2.h"
#include <stdlib.h>
#include <string.h>
#if defined(__GNUC__)
# if defined(__AVR__)
# include <avr/pgmspace.h>
// Bug in Arduino IDE: having avr-libc installed on the system overrides the
// one shipped with the IDE, which means you may end up linking against an
// ancient one.
# if !defined(pgm_read_ptr)
# if !defined(pgm_read_ptr_near)
# define pgm_read_ptr_near(address_short) (void*)__LPM_word((uint16_t)(address_short))
# endif
# define pgm_read_ptr(address_short) pgm_read_ptr_near(address_short)
# endif
# elif defined(__i386__) || defined(__x86_64__)
# define __STDC_FORMAT_MACROS
# include <inttypes.h>
# include <stdio.h>
# define PROGMEM
# define PGM_P const char *
# define strncpy_P strncpy
# define snprintf_P snprintf
# define lowByte(x) (uint8_t)((x) & 0xFF)
# define highByte(x) (uint8_t)(((x) >> 8) & 0xFF)
# define pgm_read_byte(x) (uint8_t)(*x)
# define pgm_read_word(x) (uint16_t)(*x)
# define pgm_read_ptr(x) (void *)(*x)
# endif
#else
# warning Non-GNU compiler detected, you are on your own!
#endif
void RDSDecoder::registerCallback(byte type, TRDSCallback callback){
if (type < sizeof(_callbacks) / sizeof(_callbacks[0]))
_callbacks[type] = callback;
};
void RDSDecoder::decodeRDSGroup(word block[]){
byte grouptype;
word fourchars[2];
bool pagingCallback = false;
_status.programIdentifier = block[0];
grouptype = lowByte((block[1] & RDS_TYPE_MASK) >> RDS_TYPE_SHR);
_status.TP = (bool)(block[1] & RDS_TP);
_status.PTY = lowByte((block[1] & RDS_PTY_MASK) >> RDS_PTY_SHR);
switch(grouptype){
case RDS_GROUP_0A:
case RDS_GROUP_0B:
case RDS_GROUP_15B:
byte DIPSA;
word twochars;
_status.TA = (bool)(block[1] & RDS_TA);
_status.MS = (bool)(block[1] & RDS_MS);
DIPSA = lowByte(block[1] & RDS_DIPS_ADDRESS);
if(block[1] & RDS_DI)
_status.DICC |= (0x1 << (3 - DIPSA));
else
_status.DICC &= ~(0x1 << (3 - DIPSA));
if(grouptype != RDS_GROUP_15B) {
twochars = swab(block[3]);
strncpy(&_status.programService[DIPSA * 2],
(char *)&twochars, 2);
};
if(grouptype == RDS_GROUP_0A) {
if (_callbacks[RDS_CALLBACK_AF])
_callbacks[RDS_CALLBACK_AF](0x00, true, block[2], 0x00);
}
break;
case RDS_GROUP_1A:
_status.linkageActuator = (bool)(block[2] & RDS_SLABEL_LA);
switch((block[2] & RDS_SLABEL_MASK) >> RDS_SLABEL_SHR) {
case RDS_SLABEL_TYPE_PAGINGECC:
_status.extendedCountryCode = lowByte(block[2]);
_status.pagingOperatorCode = highByte(block[2]) & 0x0F;
pagingCallback = true;
break;
case RDS_SLABEL_TYPE_TMCID:
_status.tmcIdentification = block[2] & RDS_SLABEL_VALUE_MASK;
break;
case RDS_SLABEL_TYPE_PAGINGID:
_status.pagingOperatorCode = (
block[2] & RDS_PAGING_OPC_MASK) >> RDS_PAGING_OPC_SHR;
_status.pagingAreaCode = block[2] & RDS_PAGING_PAC_MASK;
pagingCallback = true;
break;
case RDS_SLABEL_TYPE_LANGUAGE:
_status.languageCode = lowByte(block[2]);
break;
};
if(!(block[3] & RDS_PIN_DAY_MASK)) {
pagingCallback = true;
if((bool)(block[3] & RDS_PIN_PAGING_TYPE0)) {
switch((block[3] & RDS_PIN_PAGING_TYPE1_MASK) >>
RDS_PIN_PAGING_TYPE1_SHR) {
case RDS_PIN_PAGING_TYPE1_ECC:
_status.extendedCountryCode = lowByte(block[3]);
break;
case RDS_PIN_PAGING_TYPE1_CCF:
_status.currentCarrierFrequency = lowByte(block[3]);
break;
};
} else {
_status.pagingAreaCode = (
block[3] & RDS_PIN_PAGING_TYPE0_PAC_MASK) >>
RDS_PIN_PAGING_TYPE0_PAC_SHR;
_status.pagingOperatorCode = block[3] &
RDS_PIN_PAGING_TYPE0_OPC_MASK;
};
};
if(pagingCallback && _callbacks[RDS_CALLBACK_SLP])
_callbacks[RDS_CALLBACK_SLP](
block[1] & (RDS_PAGING_TNGID_MASK | RDS_PAGING_BSISID_MASK),
true, block[2], block[3]);
break;
case RDS_GROUP_1B:
_status.programItemNumber = block[3];
break;
case RDS_GROUP_2A:
case RDS_GROUP_2B:
byte RTA, RTAW;
if((bool)(block[1] & RDS_TEXTAB) != _rdstextab) {
if (_callbacks[RDS_CALLBACK_RT])
_callbacks[RDS_CALLBACK_RT](0x00,
(grouptype == RDS_GROUP_2A),
0x00, 0x00);
_rdstextab = !_rdstextab;
memset(_status.radioText, ' ', sizeof(_status.radioText) - 1);
}
RTA = lowByte(block[1] & RDS_TEXT_ADDRESS);
RTAW = (grouptype == RDS_GROUP_2A) ? 4 : 2;
fourchars[0] = swab(block[(grouptype == RDS_GROUP_2A) ? 2 : 3]);
if(grouptype == RDS_GROUP_2A)
fourchars[1] = swab(block[3]);
strncpy(&_status.radioText[RTA * RTAW], (char *)fourchars, RTAW);
break;
case RDS_GROUP_3A:
switch(block[3]){
case RDS_AID_DEFAULT:
if ((block[1] & RDS_ODA_GROUP_MASK) == RDS_GROUP_8A) {
//Default use of Group 8A is TMC, so act as if we saw an
//explicit mapping of TMC's AID to Group 8A.
_status.TMC.carriedInGroup = RDS_GROUP_8A;
_status.TMC.message = block[2];
};
break;
case RDS_AID_ERT:
_status.ERT.carriedInGroup = block[1] & RDS_ODA_GROUP_MASK;
_status.ERT.message = block[2];
break;
case RDS_AID_RTPLUS:
_status.RTP.carriedInGroup = block[1] & RDS_ODA_GROUP_MASK;
_status.RTP.message = block[2];
break;
case RDS_AID_IRDS:
_status.IRDS.carriedInGroup = block[1] & RDS_ODA_GROUP_MASK;
_status.IRDS.message = block[2];
break;
case RDS_AID_TMC:
_status.TMC.carriedInGroup = block[1] & RDS_ODA_GROUP_MASK;
_status.TMC.message = block[2];
break;
};
if (_callbacks[RDS_CALLBACK_AID])
_callbacks[RDS_CALLBACK_AID](block[1] & RDS_ODA_GROUP_MASK,
true, block[2], block[3]);
break;
case RDS_GROUP_3B:
case RDS_GROUP_4B:
case RDS_GROUP_6A:
case RDS_GROUP_6B:
case RDS_GROUP_7B:
case RDS_GROUP_8A:
case RDS_GROUP_8B:
case RDS_GROUP_9B:
case RDS_GROUP_10B:
case RDS_GROUP_11A:
case RDS_GROUP_11B:
case RDS_GROUP_12A:
case RDS_GROUP_12B:
case RDS_GROUP_13B:
case RDS_GROUP_15A:
if(grouptype == _status.TMC.carriedInGroup) {
if (_callbacks[RDS_CALLBACK_TMC])
_callbacks[RDS_CALLBACK_TMC](
block[1] & RDS_ODA_GROUP_MASK, true, block[2],
block[3]);
} else if(grouptype == _status.RTP.carriedInGroup) {
if (_callbacks[RDS_CALLBACK_RTP])
_callbacks[RDS_CALLBACK_RTP](
block[1] & RDS_ODA_GROUP_MASK, true, block[2],
block[3]);
} else if(grouptype == _status.ERT.carriedInGroup) {
if (_callbacks[RDS_CALLBACK_ERT])
_callbacks[RDS_CALLBACK_ERT](
block[1] & RDS_ODA_GROUP_MASK, true, block[2],
block[3]);
}
break;
case RDS_GROUP_4A:
unsigned long MJD, CT, ys;
word yp;
byte k, mp;
CT = ((unsigned long)block[2] << 16) | block[3];
//The standard mandates that CT must be all zeros if no time
//information is being provided by the current station.
if(!CT) break;
_havect = true;
MJD = (unsigned long)(block[1] & RDS_TIME_MJD1_MASK) <<
RDS_TIME_MJD1_SHL;
MJD |= (CT & RDS_TIME_MJD2_MASK) >> RDS_TIME_MJD2_SHR;
_time.tm_hour = (CT & RDS_TIME_HOUR_MASK) >> RDS_TIME_HOUR_SHR;
_time.tm_tz = CT & RDS_TIME_TZ_MASK;
if (CT & RDS_TIME_TZ_SIGN)
_time.tm_tz = - _time.tm_tz;
_time.tm_min = (CT & RDS_TIME_MINUTE_MASK) >> RDS_TIME_MINUTE_SHR;
//Use integer arithmetic at all costs, Arduino lacks an FPU
yp = (MJD * 10 - 150782) * 10 / 36525;
ys = yp * 36525 / 100;
mp = (MJD * 10 - 149561 - ys * 10) * 1000 / 306001;
_time.tm_mday = MJD - 14956 - ys - mp * 306001 / 10000;
k = (mp == 14 || mp == 15) ? 1 : 0;
_time.tm_year = 1900 + yp + k;
_time.tm_mon = mp - 1 - k * 12;
_time.tm_wday = (MJD + 2) % 7 + 1;
break;
case RDS_GROUP_5A:
case RDS_GROUP_5B:
if (_callbacks[RDS_CALLBACK_TDC])
_callbacks[RDS_CALLBACK_TDC](
block[1] & RDS_ODA_GROUP_MASK,
(grouptype == RDS_GROUP_5A),
((grouptype == RDS_GROUP_5A) ? block[2] : 0x00),
block[3]);
break;
case RDS_GROUP_7A:
if (_callbacks[RDS_CALLBACK_P7])
_callbacks[RDS_CALLBACK_P7](
block[1] & RDS_ODA_GROUP_MASK, true, block[2], block[3]);
break;
case RDS_GROUP_9A:
//NOTE: EWS is defined per-country which is a polite way of saying
// there is no standard and it's never going to work. Pity!
break;
case RDS_GROUP_10A:
if((block[1] & RDS_PTYNAB) != _rdsptynab) {
_rdsptynab = !_rdsptynab;
memset(_status.programTypeName, ' ', 8);
}
fourchars[0] = swab(block[2]);
fourchars[1] = swab(block[3]);
strncpy(&_status.programTypeName[(block[1] & RDS_PTYN_ADDRESS) * 4],
(char *)&fourchars, 4);
break;
case RDS_GROUP_13A:
if (_callbacks[RDS_CALLBACK_P13])
_callbacks[RDS_CALLBACK_P13](
block[1] & RDS_ODA_GROUP_MASK, true, block[2], block[3]);
break;
case RDS_GROUP_14A:
case RDS_GROUP_14B:
_status.EON.TP = block[1] & RDS_EON_TP;
_status.EON.programIdentifier = block[3];
if (grouptype == RDS_GROUP_14A) {
switch(block[1] & RDS_EON_MASK){
case RDS_EON_TYPE_PS_SA0:
case RDS_EON_TYPE_PS_SA1:
case RDS_EON_TYPE_PS_SA2:
case RDS_EON_TYPE_PS_SA3:
twochars = swab(block[2]);
strncpy(
&_status.EON.programService[
(block[1] & RDS_EON_MASK) * 2],
(char *)&twochars, 2);
break;
case RDS_EON_TYPE_AF:
if (_callbacks[RDS_CALLBACK_EON])
_callbacks[RDS_CALLBACK_EON](1, true, block[2], 0x00);
break;
case RDS_EON_TYPE_MF_FM0:
case RDS_EON_TYPE_MF_FM1:
case RDS_EON_TYPE_MF_FM2:
case RDS_EON_TYPE_MF_FM3:
if (_callbacks[RDS_CALLBACK_EON])
_callbacks[RDS_CALLBACK_EON](2, true, block[2], 0x00);
break;
case RDS_EON_TYPE_MF_AM:
if (_callbacks[RDS_CALLBACK_EON])
_callbacks[RDS_CALLBACK_EON](3, true, block[2], 0x00);
break;
case RDS_EON_TYPE_LINKAGE:
memcpy(&_status.EON.linkageInformation, &block[2],
sizeof(_status.EON.linkageInformation));
break;
case RDS_EON_TYPE_PTYTA:
_status.EON.PTY = (block[2] & RDS_EON_PTY_A_MASK) >>
RDS_EON_PTY_A_SHR;
_status.EON.TA = block[2] & RDS_EON_TA_A;
break;
case RDS_EON_TYPE_PIN:
_status.EON.programItemNumber = block[2];
break;
};
} else {
_status.EON.TA = block[1] & RDS_EON_TA_B;
_status.EON.PTY = mapShortPTY(
(block[1] & RDS_EON_PTY_B_MASK) >> RDS_EON_PTY_B_SHR);
}
break;
}
}
void RDSDecoder::getRDSData(TRDSData* rdsdata){
makePrintable(_status.programService);
makePrintable(_status.programTypeName);
makePrintable(_status.radioText);
makePrintable(_status.EON.programService);
*rdsdata = _status;
}
bool RDSDecoder::getRDSTime(TRDSTime* rdstime){
if(_havect && rdstime) *rdstime = _time;
return _havect;
}
void RDSDecoder::resetRDS(void){
memset(&_status, 0x00, sizeof(_status));
memset(_status.programService, ' ', sizeof(_status.programService) - 1);
memset(_status.programTypeName, ' ', sizeof(_status.programTypeName) - 1);
memset(_status.radioText, ' ', sizeof(_status.radioText) - 1);
_rdstextab = false;
_rdsptynab = false;
_havect = false;
}
const char PROGMEM RDS2LCD_S[] = "\xE1\xE0\xE9\xE8\xED\xEE\xF3\xF2\xFA\xF9\xD1"
"\xC7S\xDF\xA1J\xE2\xE4\xEA\xEB\xEE\xEF\xF4"
"\xF6\xFB\xFC\xF1\xE7sgij\xAA\x90\xA9%Gen\xF6"
"\x93""E\xA3$\x1B\x18\x1A\x19\xBA\xB9\xB2\xB3"
"\xB1In\xFC\xB5\xBF\xF7\xB0\xBC\xBD\xBE\xA7"
"\xC1\xC0\xC9\xC8\xCD\xCE\xD3\xD2\xDA\xD9RCSZ"
"\xD0L\xC2\xC4\xCA\xCB\xCE\xCF\xD4\xD6\xDB\xDC"
"rcsz\xF0l\xC3\xC5\xC6Oy\xDD\xD5""0\xDEGRCSZT"
"\xF0\xE3\xE5\xE6ow\xF5""0\xFEgrcszt";
void RDSDecoder::makePrintable(char* str){
for(byte i = 0; i < strlen(str); i++) {
if(str[i] == 0x0D) {
//CR ends the string, according to RDS §6.1.5.3
str[i] = '\0';
break;
}
// 0x24 is currency sign (U+00A4), not dollar sign
// 0x5E is horizontal bar (quotation dash, U+2015), not caret
// 0x60 is double vertical line (math norm symbol, U+2016), not backtick
// 0x7E is overline (U+203E), not tilde
// 0x80: a-acute, a-grave, e-acute, e-grave, i-acute, i-grave, o-acute,
// o-grave, u-acute, u-grave, N-tilde, C-cedilla, S-cedilla,
// scharfes-es, spanish-exclamation, dutch-IJ, a-circ, a-umlaut,
// e-circ, e-umlaut, i-circ, i-umlaut, o-circ, o-umlaut, u-circ,
// u-umlaut, n-tilde, c-cedilla, s-cedilla, g-breve,
// turkish-i-nodot, dutch-ij, a-superscript, alpha, (c), permille,
// G-breve, e-caron, n-caron, o-dprime, pi, EUR, GBP, USD,
// arrow-left, arrow-up, arrow-right, arrow-down, o-superscript,
// 1-superscript, 2-superscript, 3-superscript, +/-,
// turkish-I-dot, n-acute, u-dprime, miu, spanish-question,
// division, degree, 1/4, 1/2, 3/4, paragraph,
// A,E,I,O,U{acute,grave}, R,C,S,Z{caron}, D-line, L-dot,
// A,E,I,O,U{circ,umlaut}, r,c,s,z{caron}, d-line, l-dot,
// A-tilde, A-circle, AE, OE, y-circ, Y-acute, O-tilde, O-slash,
// Thorn, NG, R,C,S,Z{acute}, T-bar, th, a-tilde, a-circle, ae,
// oe, w-circ, o-tilde, o-slash, thorn, ng, r,c,s,z{acute}, t-bar
if(str[i] == 0x0A || str[i] == 0x0B || str[i] == 0x1F)
//LF, VT and US are allowed as a control characters. The first with
//the same meaning as on UNIX, second as end-of-headline indicator
//and third as soft-hyphen, according to RDS §6.1.5.3
continue;
//Any other control character is an undetected error on the receiving
//side (because the manufacturers of the RDS decoder chip were too cheap
//to properly implement the ECC in the standard).
if(str[i] < 32) str[i] = '?';
else if(str[i] == 0x24) str[i] = '\xA4';
else if(str[i] == 0x5E) str[i] = '-';
else if(str[i] == 0x60) str[i] = '\xA0';
else if(str[i] == 0x7E) str[i] = '_';
else if(str[i] >= 0x80)
str[i] = (char)pgm_read_byte(&RDS2LCD_S[str[i] - 0x80]);
}
}
RDSDecoder::RDSDecoder(byte locale) {
_locale = locale;
resetRDS();
}
byte RDSDecoder::mapShortPTY(byte shortPTY) {
switch(shortPTY) {
case RDS_EON_PTY_B_NEWS:
return 1; // PTY of News
break;
case RDS_EON_PTY_B_WEATHER:
return (_locale == RDS_LOCALE_EU) ? 16 : 29; // PTY of Weather
break;
case RDS_EON_PTY_B_ALARM:
return 31; // PTY of Alarm
break;
};
return 0; // PTY of None/Undefined
};
const char PTY2Text_S_None[] PROGMEM = "None";
const char PTY2Text_S_News[] PROGMEM = "News";
const char PTY2Text_S_Current[] PROGMEM = "Current affairs";
const char PTY2Text_S_Information[] PROGMEM = "Information";
const char PTY2Text_S_Sports[] PROGMEM = "Sports";
const char PTY2Text_S_Education[] PROGMEM = "Education";
const char PTY2Text_S_Drama[] PROGMEM = "Drama";
const char PTY2Text_S_Culture[] PROGMEM = "Cultures";
const char PTY2Text_S_Science[] PROGMEM = "Science";
const char PTY2Text_S_Varied[] PROGMEM = "Varied speech";
const char PTY2Text_S_Pop[] PROGMEM = "Pop music";
const char PTY2Text_S_Rock[] PROGMEM = "Rock music";
const char PTY2Text_S_EasySoft[] PROGMEM = "Easy listening";
const char PTY2Text_S_LightClassical[] PROGMEM = "Light classics music";
const char PTY2Text_S_SeriousClassical[] PROGMEM = "Serious classics";
const char PTY2Text_S_Other[] PROGMEM = "Other music";
const char PTY2Text_S_Weather[] PROGMEM = "Weather";
const char PTY2Text_S_Finance[] PROGMEM = "Finance";
const char PTY2Text_S_Children[] PROGMEM = "Children's programmes";
const char PTY2Text_S_Social[] PROGMEM = "Social affairs";
const char PTY2Text_S_Religion[] PROGMEM = "Religion";
const char PTY2Text_S_Phone[] PROGMEM = "Phone-in";
const char PTY2Text_S_Travel[] PROGMEM = "Travel & touring";
const char PTY2Text_S_Leisure[] PROGMEM = "Leisure & hobby";
const char PTY2Text_S_Jazz[] PROGMEM = "Jazz music";
const char PTY2Text_S_Country[] PROGMEM = "Country music";
const char PTY2Text_S_National[] PROGMEM = "National music";
const char PTY2Text_S_Oldies[] PROGMEM = "Oldies music";
const char PTY2Text_S_Folk[] PROGMEM = "Folk music";
const char PTY2Text_S_Documentary[] PROGMEM = "Documentary";
const char PTY2Text_S_EmergencyTest[] PROGMEM = "Emergency test";
const char PTY2Text_S_Emergency[] PROGMEM = "Alarm - Alarm!";
const char PTY2Text_S_Talk[] PROGMEM = "Talk";
const char PTY2Text_S_ClassicRock[] PROGMEM = "Classic rock";
const char PTY2Text_S_SoftRock[] PROGMEM = "Soft rock";
const char PTY2Text_S_Adult[] PROGMEM = "Adult hits";
const char PTY2Text_S_Top40[] PROGMEM = "Top 40";
const char PTY2Text_S_Nostalgia[] PROGMEM = "Nostalgia";
const char PTY2Text_S_RnB[] PROGMEM = "Rhythm and blues";
const char PTY2Text_S_SoftRnB[] PROGMEM = "Soft R&B";
const char PTY2Text_S_Language[] PROGMEM = "Foreign language";
const char PTY2Text_S_ReligiousMusic[] PROGMEM = "Religious music";
const char PTY2Text_S_ReligiousTalk[] PROGMEM = "Religious talk";
const char PTY2Text_S_Personality[] PROGMEM = "Personality";
const char PTY2Text_S_Public[] PROGMEM = "Public";
const char PTY2Text_S_College[] PROGMEM = "College";
const char PTY2Text_S_SpanishTalk[] PROGMEM = "Hablar Espanol";
const char PTY2Text_S_SpanishMusic[] PROGMEM = "Musica Espanol";
const char PTY2Text_S_HipHop[] PROGMEM = "Hip hop";
PGM_P const PTY2Text_EU[32] PROGMEM = {
PTY2Text_S_None,
PTY2Text_S_News,
PTY2Text_S_Current,
PTY2Text_S_Information,
PTY2Text_S_Sports,
PTY2Text_S_Education,
PTY2Text_S_Drama,
PTY2Text_S_Culture,
PTY2Text_S_Science,
PTY2Text_S_Varied,
PTY2Text_S_Pop,
PTY2Text_S_Rock,
PTY2Text_S_EasySoft,
PTY2Text_S_LightClassical,
PTY2Text_S_SeriousClassical,
PTY2Text_S_Other,
PTY2Text_S_Weather,
PTY2Text_S_Finance,
PTY2Text_S_Children,
PTY2Text_S_Social,
PTY2Text_S_Religion,
PTY2Text_S_Phone,
PTY2Text_S_Travel,
PTY2Text_S_Leisure,
PTY2Text_S_Jazz,
PTY2Text_S_Country,
PTY2Text_S_National,
PTY2Text_S_Oldies,
PTY2Text_S_Folk,
PTY2Text_S_Documentary,
PTY2Text_S_EmergencyTest,
PTY2Text_S_Emergency};
PGM_P const PTY2Text_US[32] PROGMEM = {
PTY2Text_S_None,
PTY2Text_S_News,
PTY2Text_S_Information,
PTY2Text_S_Sports,
PTY2Text_S_Talk,
PTY2Text_S_Rock,
PTY2Text_S_ClassicRock,
PTY2Text_S_Adult,
PTY2Text_S_SoftRock,
PTY2Text_S_Top40,
PTY2Text_S_Country,
PTY2Text_S_Oldies,
PTY2Text_S_EasySoft,
PTY2Text_S_Nostalgia,
PTY2Text_S_Jazz,
PTY2Text_S_SeriousClassical,
PTY2Text_S_RnB,
PTY2Text_S_SoftRnB,
PTY2Text_S_Language,
PTY2Text_S_ReligiousMusic,
PTY2Text_S_ReligiousTalk,
PTY2Text_S_Personality,
PTY2Text_S_Public,
PTY2Text_S_College,
PTY2Text_S_SpanishTalk,
PTY2Text_S_SpanishMusic,
PTY2Text_S_HipHop,
PTY2Text_S_None,
PTY2Text_S_None,
PTY2Text_S_Weather,
PTY2Text_S_EmergencyTest,
PTY2Text_S_Emergency};
void RDSTranslator::getTextForPTY(byte PTY, char* text, byte textsize){
switch(_locale){
case RDS_LOCALE_US:
strncpy_P(text, (PGM_P)(pgm_read_ptr(&PTY2Text_US[PTY])),
textsize);
break;
case RDS_LOCALE_EU:
strncpy_P(text, (PGM_P)(pgm_read_ptr(&PTY2Text_EU[PTY])),
textsize);
break;
}
}
const char PI2CallSign_S[] PROGMEM = "KEXKFHKFIKGAKGOKGUKGWKGYKIDKITKJRKLOKLZ"
"KMAKMJKNXKOA---------KQVKSLKUJKVIKWG---"
"---KYW---WBZWDZWEW---WGLWGNWGR---WHAWHB"
"WHKWHO---WIPWJRWKYWLSWLW------WOC---WOL"
"WOR---------WWJWWL------------------KDB"
"KGBKOYKPQKSDKUTKXLKXO---WBTWGHWGYWHPWIL"
"WMCWMTWOIWOWWRRWSBWSMKBWKCYKDF------KHQ"
"KOB---------------------WISWJWWJZ------"
"---WRC";
bool RDSTranslator::decodeCallSign(word programIdentifier, char* callSign){
if (!callSign) return false;
if (programIdentifier < 0x1000 ||
(programIdentifier > 0x9EFF && programIdentifier < 0xA100) ||
programIdentifier > 0xAFAF)
return false;
else if (programIdentifier >= 0x9950 && programIdentifier <= 0x9EFF) {
if (programIdentifier <= 0x99B9) {
programIdentifier -= 0x9950;
char exists = (char)pgm_read_byte(&PI2CallSign_S[programIdentifier * 3]);
if (exists != '-') {
strncpy_P(callSign, &PI2CallSign_S[programIdentifier * 3], 3);
callSign[3] = '\0';
return true;
} else
return false;
} else
return false;
};
if ((programIdentifier & 0xFFF0) == 0xAFA0)
programIdentifier <<= 12;
else if ((programIdentifier & 0xFF00) == 0xAF00)
programIdentifier <<= 8;
else if ((programIdentifier & 0xF000) == 0xA000)
programIdentifier = (programIdentifier & 0x0F00 << 4) |
(programIdentifier & 0x00FF);
if (programIdentifier >= 0x54A8) {
callSign[0] = 'W';
programIdentifier -= 0x54A8;
} else if (programIdentifier >= 0x1000) {
callSign[0] = 'K';
programIdentifier -= 0x1000;
} else
return false;
callSign[1] = char(programIdentifier / 676);
programIdentifier -= byte(callSign[1]) * 676;
callSign[1] += 'A';
callSign[2] = char(programIdentifier / 26);
programIdentifier -= byte(callSign[2] * 26);
callSign[2] += 'A';
callSign[3] = programIdentifier + 'A';
callSign[4] = '\0';
return true;
}
void RDSTranslator::unpackEBUPI(word programIdentifier, TRDSPI *unpacked) {
if(!unpacked) return;
unpacked->country = (programIdentifier & RDS_PI_COUNTRY_MASK) >>
RDS_PI_COUNTRY_SHR;
unpacked->area = (programIdentifier & RDS_PI_AREA_MASK) >> RDS_PI_AREA_SHR;
unpacked->program = lowByte(programIdentifier);
};
void RDSTranslator::unpackPIN(word programItemNumber, TRDSTime *unpacked) {
if(!unpacked) return;
unpacked->tm_mday = (programItemNumber & RDS_PIN_DAY_MASK) >>
RDS_PIN_DAY_SHR;
unpacked->tm_hour = (programItemNumber & RDS_PIN_HOUR_MASK) >>
RDS_PIN_HOUR_SHR;
unpacked->tm_min = programItemNumber & RDS_PIN_MINUTE_MASK;
};
byte RDSTranslator::decodeTMCDistance(byte length) {
if (length == 0) return 0xFF;
else if (length > 0 && length <= 10) return length;
else if (length > 10 && length <= 15) return 10 + (length - 10) * 2;
else
return 20 + (length - 15) * 5;
}
void RDSTranslator::decodeTMCDuration(byte length, TRDSTime* tmctime) {
if (!tmctime) return;
else memset(tmctime, 0x00, sizeof(TRDSTime));
if (length <= 95) {
tmctime->tm_min = (length % 4) * 45;
tmctime->tm_hour = length / 4;
} else if (length > 95 && length <= 200) {
tmctime->tm_hour = (length - 95) % 24;
tmctime->tm_mday = (length - 95) / 24;
} else if (length > 200 && length < 231) {
tmctime->tm_mday = length - 200;
} else if (length > 231) {
// NOTE: according to RDS-TMC standard, this is expressed as half-month
// intervals. Therefore, this function will output things like Feb 30th
// with the understanding that the UI will render it appropriately.
tmctime->tm_mday = ((length - 231) * 15) % 31;
tmctime->tm_mon = ((length - 232) / 2) + 1;
};
};
word RDSTranslator::decodeAFFrequency(byte AF, bool FM) {
if (FM) return (AF + 875) * 10;
else if (AF < 16) return (AF - 1) * 9 + 153;
else if (_locale == RDS_LOCALE_US)
return (AF - 16) * 10 + 530;
else return (AF - 16) * 9 + 531;
};
int16_t RDSTranslator::decodeTZValue(int8_t tz) {
return (tz / 2) * 60 + (tz % 2) * 30;
};
void RDSTranslator::unpackTMCMessage3(word tmcMessage,
TRDSTMCMessage3 *unpacked) {
if(!unpacked) return;
else memset(unpacked, 0x00, sizeof(TRDSTMCMessage3));
unpacked->variantCode = (tmcMessage & RDS_TMC_MESSAGE_VARIANT_MASK) >>
RDS_TMC_MESSAGE_VARIANT_SHR;
switch(unpacked->variantCode) {
case RDS_TMC_MESSAGE_VARIANT_LTN:
unpacked->locationTableNumber = (
tmcMessage & RDS_TMC_MESSAGE_LTN_MASK) >>
RDS_TMC_MESSAGE_LTN_SHR;
unpacked->alternateFrequencyIndicator = (bool)(
tmcMessage & RDS_TMC_MESSAGE_AFI);
unpacked->mode = (bool)(tmcMessage & RDS_TMC_MESSAGE_MODE);
unpacked->international = (bool)(
tmcMessage & RDS_TMC_MESSAGE_SCOPE_INTERNATIONAL);
unpacked->national = (bool)(
tmcMessage & RDS_TMC_MESSAGE_SCOPE_NATIONAL);
unpacked->regional = (bool)(
tmcMessage & RDS_TMC_MESSAGE_SCOPE_REGIONAL);
unpacked->urban = (bool)(tmcMessage & RDS_TMC_MESSAGE_SCOPE_URBAN);
break;
case RDS_TMC_MESSAGE_VARIANT_SID:
unpacked->gapParameter = (
tmcMessage & RDS_TMC_MESSAGE_GAP_MASK) >>
RDS_TMC_MESSAGE_GAP_SHR;
unpacked->serviceIdentifier = (
tmcMessage & RDS_TMC_MESSAGE_SID_MASK) >>
RDS_TMC_MESSAGE_SID_SHR;
unpacked->activityTime = (
tmcMessage & RDS_TMC_MESSAGE_TA_MASK) >> RDS_TMC_MESSAGE_TA_SHR;
unpacked->windowTime = (
tmcMessage & RDS_TMC_MESSAGE_TW_MASK) >> RDS_TMC_MESSAGE_TW_SHR;
unpacked->delayTime = tmcMessage & RDS_TMC_MESSAGE_TD_MASK;
break;
};
};
word RDSTranslator::decryptLocation(word location, word key) {
return decryptLocation(location, highByte(key), (lowByte(key) & 0xF0) >> 4,
lowByte(key) & 0x0F);
};
word RDSTranslator::decryptLocation(word location, byte xorValue, byte start,
byte rol) {
uint16_t result = (word(xorValue) << start) ^ location;
return (result >> (16 - rol)) | (result << rol);
};
word RDSTranslator::decryptLocation(word location, byte encId,
const word table[], bool in_flash) {
if(in_flash)
return decryptLocation(location, pgm_read_word(&table[encId]));
return decryptLocation(location, table[encId]);
};
word RDSTranslator::decryptLocation(word location, byte serviceKey, byte encId,
const word table[][32], bool in_flash) {
if(in_flash)
return decryptLocation(location,
pgm_read_word(&table[serviceKey][encId]));
return decryptLocation(location, table[serviceKey][encId]);
};
void RDSTranslator::unpackTMCFLT(word flt, TRDSTMCFLT *unpacked) {
if((flt & RDS_TMC_MESSAGE_LOCATION_FOREIGN_MASK) !=
RDS_TMC_MESSAGE_LOCATION_FOREIGN_MASK)
//Not a FLT code.
return;
if(!unpacked)
return;
unpacked->magic = (flt & RDS_TMC_MESSAGE_LOCATION_FOREIGN_MASK) >>
RDS_TMC_MESSAGE_LOCATION_FOREIGN_SHR;
unpacked->country = (flt & RDS_TMC_MESSAGE_LOCATION_FOREIGN_COUNTRY_MASK) >>
RDS_TMC_MESSAGE_LOCATION_FOREIGN_COUNTRY_SHR;
unpacked->locationTableNumber = flt &
RDS_TMC_MESSAGE_LOCATION_FOREIGN_LTN_MASK;
};
void RDSTranslator::unpackTMCMessage8(byte tmcXbits, word tmcYbits,
word tmcZbits,
TRDSTMCMessage8 *unpacked) {
if(!unpacked)
return;
unpacked->systemMessage = (bool)(tmcXbits & RDS_TMC_MESSAGE_SYSTEM);
if(unpacked->systemMessage) {
word twochars;
unpacked->variantCode = tmcXbits & ~RDS_TMC_MESSAGE_SYSTEM;
switch(unpacked->variantCode) {
case RDS_TMC_MESSAGE_VARIANT_SPN_A:
case RDS_TMC_MESSAGE_VARIANT_SPN_B:
twochars = swab(tmcYbits);
strncpy(unpacked->serviceProviderName, (char *)&twochars, 2);
twochars = swab(tmcZbits);
strncpy(&unpacked->serviceProviderName[2], (char *)&twochars, 2);
break;
case RDS_TMC_MESSAGE_VARIANT_EON_AF:
unpacked->alternativeFrequency[0] = highByte(tmcYbits);
unpacked->alternativeFrequency[1] = lowByte(tmcYbits);
unpacked->programIdentifier2 = tmcZbits;
break;
case RDS_TMC_MESSAGE_VARIANT_EON_TM:
unpacked->tuningFrequency = highByte(tmcYbits);
unpacked->mappedFrequency = lowByte(tmcYbits);
unpacked->programIdentifier2 = tmcZbits;
break;
case RDS_TMC_MESSAGE_VARIANT_EON_PI:
unpacked->programIdentifier1 = tmcYbits;
unpacked->programIdentifier2 = tmcZbits;
break;
case RDS_TMC_MESSAGE_VARIANT_EON_EX:
unpacked->locationTableNumber = (
tmcYbits & RDS_TMC_MESSAGE_LTN_ON_MASK) >>
RDS_TMC_MESSAGE_LTN_ON_SHR;
unpacked->international = (bool)(
tmcYbits & RDS_TMC_MESSAGE_SCOPE_ON_INTERNATIONAL);
unpacked->national = (bool)(
tmcYbits & RDS_TMC_MESSAGE_SCOPE_ON_NATIONAL);
unpacked->regional = (bool)(
tmcYbits & RDS_TMC_MESSAGE_SCOPE_ON_REGIONAL);
unpacked->urban = (bool)(
tmcYbits & RDS_TMC_MESSAGE_SCOPE_ON_URBAN);
unpacked->serviceIdentifier = tmcYbits &
RDS_TMC_MESSAGE_SID_ON_MASK;
unpacked->programIdentifier2 = tmcZbits;
break;
};
} else {
unpacked->single = (bool)(tmcXbits & RDS_TMC_MESSAGE_SINGLE);
if(unpacked->single) {
unpacked->duration = tmcXbits & RDS_TMC_MESSAGE_DURATION_MASK;
unpacked->diversion = (bool)(tmcYbits & RDS_TMC_MESSAGE_DIVERSION);
unpacked->direction = (bool)(tmcYbits & RDS_TMC_MESSAGE_DIRECTION);
unpacked->extent = (tmcYbits & RDS_TMC_MESSAGE_EXTENT_MASK) >>
RDS_TMC_MESSAGE_EXTENT_SHR;
unpacked->event = tmcYbits & RDS_TMC_MESSAGE_EVENT_MASK;
unpacked->location = tmcZbits;
} else {
//Same position as duration in single-group messages
unpacked->continuationIndicator = tmcXbits &
RDS_TMC_MESSAGE_DURATION_MASK;
if(unpacked->continuationIndicator) {
//Same position as diversion in single-group messages
unpacked->first = (bool)(tmcYbits & RDS_TMC_MESSAGE_DIVERSION);
if(unpacked->first) {
//Same format as single-group messages
unpacked->direction = (bool)(
tmcYbits & RDS_TMC_MESSAGE_DIRECTION);
unpacked->extent = (
tmcYbits & RDS_TMC_MESSAGE_EXTENT_MASK) >>
RDS_TMC_MESSAGE_EXTENT_SHR;
unpacked->event = tmcYbits & RDS_TMC_MESSAGE_EVENT_MASK;
unpacked->location = tmcZbits;
} else {
//Same position as direction in single-group messages.
unpacked->second = (bool)(
tmcYbits & RDS_TMC_MESSAGE_DIRECTION);
unpacked->sequence = (
tmcYbits & RDS_TMC_MESSAGE_GSI_MASK) >>
RDS_TMC_MESSAGE_GSI_SHR;
unpacked->data = (
(uint32_t)(tmcYbits & RDS_TMC_MESSAGE_CONTAINER_MASK) <<
RDS_TMC_MESSAGE_CONTAINER_SHL) | (uint32_t)tmcZbits;
};
} else {
unpacked->encVariantCode = (
tmcYbits & RDS_TMC_MESSAGE_ENC_VARIANT_MASK) >>
RDS_TMC_MESSAGE_ENC_VARIANT_SHR;
if(!unpacked->encVariantCode) {
unpacked->test = (
tmcYbits & RDS_TMC_MESSAGE_EAG_TEST_MASK) >>
RDS_TMC_MESSAGE_EAG_TEST_SHR;
unpacked->encServiceIdentifier = (
tmcYbits & RDS_TMC_MESSAGE_EAG_SID_MASK) >>
RDS_TMC_MESSAGE_EAG_SID_SHR;
unpacked->encId = tmcYbits & RDS_TMC_MESSAGE_EAG_ENCID_MASK;
unpacked->encLocationTableNumber = (
tmcZbits & RDS_TMC_MESSAGE_EAG_LTNBE_MASK) >>
RDS_TMC_MESSAGE_EAG_LTNBE_SHR;
};
};
};
};
};
void RDSTranslator::glueTMCContainerSlices(uint32_t slices[4]) {
slices[0] <<= 4;
slices[0] |= (slices[1] & 0x0F000000) >> 24;
slices[1] <<= 8;
slices[1] |= (slices[2] & 0x0FF00000) >> 20;
slices[2] <<= 12;
slices[2] |= (slices[3] & 0x0FFF0000) >> 16;
slices[3] <<= 16;
};
word RDSTranslator::readFromTMCContainer(const uint32_t slices[4],
TRDSTMCContainerIndex *fp, byte size) {
if(!fp || size > 16)
return 0x0000;
//Enforce order of evaluation
if(fp->sliceIndex == 6)
return 0x0000;
if(!(fp->bitIndex || fp->sliceIndex)) {
//First call, set pointer to start of container
fp->bitIndex = 31;
fp->sliceIndex = 1;
};
uint16_t result = 0x0000;
if(size > fp->bitIndex + 1) {
//Split fetch
result = slices[fp->sliceIndex - 1] & ((1U << fp->bitIndex) - 1);
result <<= size - (fp->bitIndex + 1);
if(fp->sliceIndex < 4) {
fp->sliceIndex++;
result |= (((1U << (size - fp->bitIndex)) - 1) <<
(31 - (size - fp->bitIndex) + 1)) &
slices[fp->sliceIndex - 1];
fp->bitIndex = 31 - (size - fp->bitIndex);
} else
//Simulate EOF.
fp->sliceIndex = 6;
} else {
//Single fetch
result = slices[fp->sliceIndex - 1] >> (fp->bitIndex - size + 1);
result &= (1U << size) - 1;
if(size == fp->bitIndex + 1) {
if(fp->sliceIndex < 4) {
//We read the last bit from the slice, moving on to the next.
fp->bitIndex = 31;
fp->sliceIndex++;
} else {
//Simulate EOF.
fp->sliceIndex = 6;
};
} else
fp->bitIndex -= size;
};
return result;
};
bool RDSTranslator::readNextTMCLabel(const uint32_t slices[4],
TRDSTMCContainerIndex *fp,
TRDSTMCLabel *label) {
if(!(fp || label))
return false;
//Enforce order of evaluation
if(fp->sliceIndex == 6)
//Container at EOF.
return false;
label->type = readFromTMCContainer(slices, fp, 4);
switch(label->type) {
case RDS_TMC_LABEL_RESERVED2:
//Label 15 has an undefined size so nothing can exist beyond it: fake
//EOF status.
fp->sliceIndex = 6;
break;
case RDS_TMC_LABEL_SEPARATOR:
//Label 14 has a size of zero.
break;
case RDS_TMC_LABEL_DURATION:
case RDS_TMC_LABEL_CONTROL:
label->value = readFromTMCContainer(slices, fp, 3);
if(label->type == RDS_TMC_LABEL_DURATION && !label->value) {
//Label 0 cannot have an argument of 0, if we see that (i.e. 7
//consecutive zero bits), the end of the container was where the
//last read ended.
fp->sliceIndex = 6;
return false;
};
break;
case RDS_TMC_LABEL_LENGTH:
case RDS_TMC_LABEL_SPEED:
case RDS_TMC_LABEL_QUANTIFIER_5:
label->value = readFromTMCContainer(slices, fp, 5);
break;
case RDS_TMC_LABEL_QUANTIFIER_8:
case RDS_TMC_LABEL_SUPPLEMENTARY:
case RDS_TMC_LABEL_START:
case RDS_TMC_LABEL_STOP:
label->value = readFromTMCContainer(slices, fp, 8);
break;
case RDS_TMC_LABEL_ADDITIONAL:
label->value = readFromTMCContainer(slices, fp, 11);
break;
case RDS_TMC_LABEL_DIVERSION:
case RDS_TMC_LABEL_DESTINATION:
case RDS_TMC_LABEL_RESERVED1:
case RDS_TMC_LABEL_XREF:
label->value = readFromTMCContainer(slices, fp, 16);
break;
};
return true;
};
const char QuantifierText_S_0[] PROGMEM = "%" PRIu8;
const char QuantifierText_S_1[] PROGMEM = "%" PRIu16;
const char QuantifierText_S_2[] PROGMEM = "less than %" PRIu16 " meters";
const char QuantifierText_S_3[] PROGMEM = "%" PRIu8 "%%";
const char QuantifierText_S_4[] PROGMEM = "of up to %" PRIu8 " km/h";
const char QuantifierText_S_5[] PROGMEM = "of up to %" PRIu8 " %s";
const char QuantifierText_S_6[] PROGMEM = "%" PRIi8 " degrees Celsius";
const char QuantifierText_S_7[] PROGMEM = "%02" PRIu8 ":%02" PRIu8;
const char QuantifierText_S_8[] PROGMEM = "%2.1f tonnes";