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Move frequency lookup tables into progmem.

This commit is contained in:
Stephen Olesen 2015-07-05 17:03:05 -06:00
parent 167c792116
commit 0721456c28
1 changed files with 10 additions and 9 deletions
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19
HamShield.cpp
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@ -6,6 +6,7 @@
#include "Arduino.h" #include "Arduino.h"
#include "HamShield.h" #include "HamShield.h"
#include <avr/wdt.h> #include <avr/wdt.h>
#include <avr/pgmspace.h>
// #include <PCM.h> // #include <PCM.h>
/* don't change this regulatory value, use dangerMode() and safeMode() instead */ /* don't change this regulatory value, use dangerMode() and safeMode() instead */
@ -15,13 +16,13 @@ HamShield *HamShield::sHamShield = NULL;
/* channel lookup tables */ /* channel lookup tables */
uint32_t FRS[] = {0,462562,462587,462612,462637,462662,462687,462712,467562,467587,467612,467637,467662,467687,467712}; uint32_t FRS[] PROGMEM = {0,462562,462587,462612,462637,462662,462687,462712,467562,467587,467612,467637,467662,467687,467712};
uint32_t GMRS[] = {0,462550,462575,462600,462625,462650,462675,462700,462725}; uint32_t GMRS[] PROGMEM = {0,462550,462575,462600,462625,462650,462675,462700,462725};
uint32_t MURS[] = {0,151820,151880,151940,154570,154600}; uint32_t MURS[] PROGMEM = {0,151820,151880,151940,154570,154600};
uint32_t WX[] = {0,162550,162400,162475,162425,162450,162500,162525}; uint32_t WX[] PROGMEM = {0,162550,162400,162475,162425,162450,162500,162525};
/* morse code lookup table */ /* morse code lookup table */
// This is the Morse table in reverse binary format. // This is the Morse table in reverse binary format.
@ -1054,7 +1055,7 @@ bool HamShield::frequency(uint32_t freq_khz) {
bool HamShield::setFRSChannel(uint8_t channel) { bool HamShield::setFRSChannel(uint8_t channel) {
if(channel < 15) { if(channel < 15) {
setFrequency(FRS[channel]); setFrequency(pgm_read_dword_near(FRS + channel));
return true; return true;
} }
return false; return false;
@ -1065,11 +1066,11 @@ bool HamShield::setFRSChannel(uint8_t channel) {
bool HamShield::setGMRSChannel(uint8_t channel) { bool HamShield::setGMRSChannel(uint8_t channel) {
if((channel > 8) & (channel < 16)) { if((channel > 8) & (channel < 16)) {
channel = channel - 7; // we start with 0, to try to avoid channel 8 being nothing channel = channel - 7; // we start with 0, to try to avoid channel 8 being nothing
setFrequency(FRS[channel]); setFrequency(pgm_read_dword_near(FRS + channel));
return true; return true;
} }
if(channel < 9) { if(channel < 9) {
setFrequency(GMRS[channel]); setFrequency(pgm_read_dword_near(GMRS + channel));
return true; return true;
} }
return false; return false;
@ -1079,7 +1080,7 @@ bool HamShield::setGMRSChannel(uint8_t channel) {
bool HamShield::setMURSChannel(uint8_t channel) { bool HamShield::setMURSChannel(uint8_t channel) {
if(channel < 6) { if(channel < 6) {
setFrequency(MURS[channel]); setFrequency(pgm_read_dword_near(MURS + channel));
return true; return true;
} }
} }
@ -1088,7 +1089,7 @@ bool HamShield::setMURSChannel(uint8_t channel) {
bool HamShield::setWXChannel(uint8_t channel) { bool HamShield::setWXChannel(uint8_t channel) {
if(channel < 8) { if(channel < 8) {
setFrequency(WX[channel]); setFrequency(pgm_read_dword_near(WX + channel));
setModeReceive(); setModeReceive();
// turn off squelch? // turn off squelch?
// channel bandwidth? // channel bandwidth?