kopia lustrzana https://github.com/jgromes/RadioLib
103 wiersze
2.4 KiB
C++
103 wiersze
2.4 KiB
C++
#include "Hellschreiber.h"
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#if !RADIOLIB_EXCLUDE_HELLSCHREIBER
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HellClient::HellClient(PhysicalLayer* phy) {
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phyLayer = phy;
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lineFeed = " ";
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#if !RADIOLIB_EXCLUDE_AFSK
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audioClient = nullptr;
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#endif
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}
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#if !RADIOLIB_EXCLUDE_AFSK
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HellClient::HellClient(AFSKClient* audio) {
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phyLayer = audio->phyLayer;
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lineFeed = " ";
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audioClient = audio;
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}
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#endif
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int16_t HellClient::begin(float base, float rate) {
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// calculate 24-bit frequency
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baseFreqHz = base;
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baseFreq = (base * 1000000.0) / phyLayer->getFreqStep();
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// calculate "pixel" duration
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pixelDuration = 1000000.0/rate;
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// configure for direct mode
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return(phyLayer->startDirect());
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}
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size_t HellClient::printGlyph(uint8_t* buff) {
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// print the character
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Module* mod = phyLayer->getMod();
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bool transmitting = false;
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for(uint8_t mask = 0x40; mask >= 0x01; mask >>= 1) {
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for(int8_t i = RADIOLIB_HELL_FONT_HEIGHT - 1; i >= 0; i--) {
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RadioLibTime_t start = mod->hal->micros();
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if((buff[i] & mask) && (!transmitting)) {
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transmitting = true;
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transmitDirect(baseFreq, baseFreqHz);
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} else if((!(buff[i] & mask)) && (transmitting)) {
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transmitting = false;
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standby();
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}
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mod->waitForMicroseconds(start, pixelDuration);
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}
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}
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// make sure transmitter is off
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standby();
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return(1);
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}
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void HellClient::setInversion(bool inv) {
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invert = inv;
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}
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size_t HellClient::write(uint8_t b) {
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// convert to position in font buffer
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uint8_t pos = b;
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if((pos >= ' ') && (pos <= '_')) {
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pos -= ' ';
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} else if((pos >= 'a') && (pos <= 'z')) {
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pos -= (2*' ');
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} else {
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return(0);
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}
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// fetch character from flash
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uint8_t buff[RADIOLIB_HELL_FONT_WIDTH];
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buff[0] = 0x00;
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for(uint8_t i = 0; i < RADIOLIB_HELL_FONT_WIDTH - 2; i++) {
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buff[i + 1] = RADIOLIB_NONVOLATILE_READ_BYTE(&HellFont[pos][i]);
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}
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buff[RADIOLIB_HELL_FONT_WIDTH - 1] = 0x00;
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// print the character
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return(printGlyph(buff));
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}
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int16_t HellClient::transmitDirect(uint32_t freq, uint32_t freqHz) {
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#if !RADIOLIB_EXCLUDE_AFSK
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if(audioClient != nullptr) {
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return(audioClient->tone(freqHz));
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}
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#endif
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return(phyLayer->transmitDirect(freq));
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}
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int16_t HellClient::standby() {
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#if !RADIOLIB_EXCLUDE_AFSK
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if(audioClient != nullptr) {
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return(audioClient->noTone(invert));
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}
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#endif
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return(phyLayer->standby(RADIOLIB_STANDBY_WARM));
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}
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#endif
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