Started adding AFSK modulator options, cleaning up LCR TX

firmware/application/ui_lcr.cpp

@@ -32,6 +32,7 @@
 
 #include "hackrf_hal.hpp"
 #include "portapack_shared_memory.hpp"
+#include "portapack_persistent_memory.hpp"
 
 #include <cstring>
 #include <stdio.h>
@@ -57,23 +58,23 @@ void LCRView::paint(Painter& painter) {
 	char eom[3] = { 3, 0, 0 };
 	uint8_t checksum = 0, i;
 	char teststr[16];
+	uint16_t dp;
+	uint8_t cp, pp, cur_byte, new_byte;
+	
+	static constexpr Style style_orange {
+		.font = font::fixed_8x16,
+		.background = Color::black(),
+		.foreground = Color::orange(),
+	};
 	
 	Point offset = {
-		static_cast<Coord>(120),
+		static_cast<Coord>(72),
-		static_cast<Coord>(32)
+		static_cast<Coord>(72)
 	};
 	
 	painter.draw_string(
 		screen_pos() + offset,
-		style(),
+		style_orange,
-		rgsb
-	);
-	
-	offset.y += 40;
-	
-	painter.draw_string(
-		screen_pos() + offset,
-		style(),
 		litteral[0]
 	);
 	
@@ -81,7 +82,7 @@ void LCRView::paint(Painter& painter) {
 	
 	painter.draw_string(
 		screen_pos() + offset,
-		style(),
+		style_orange,
 		litteral[1]
 	);
 	
@@ -89,7 +90,7 @@ void LCRView::paint(Painter& painter) {
 	
 	painter.draw_string(
 		screen_pos() + offset,
-		style(),
+		style_orange,
 		litteral[2]
 	);
 	
@@ -97,10 +98,11 @@ void LCRView::paint(Painter& painter) {
 	
 	painter.draw_string(
 		screen_pos() + offset,
-		style(),
+		style_orange,
 		litteral[3]
 	);
 	
+	// Testing: 7 char pad for litterals
 	for (i = 0; i < 4; i++) {
 		while (strlen(litteral[i]) < 7) {
 			strcat(litteral[i], " ");
@@ -114,7 +116,9 @@ void LCRView::paint(Painter& painter) {
 	lcrframe[2] = 127;
 	lcrframe[3] = 127;
 	lcrframe[4] = 127;
-	lcrframe[5] = 15;
+	lcrframe[5] = 127;
+	lcrframe[6] = 127;
+	lcrframe[7] = 15;
 	strcat(lcrframe, rgsb);
 	strcat(lcrframe, "PA AM=1 AF=\"");
 	strcat(lcrframe, litteral[0]);
@@ -124,10 +128,10 @@ void LCRView::paint(Painter& painter) {
 	strcat(lcrframe, litteral[2]);
 	strcat(lcrframe, "\" CL=0 AM=4 AF=\"");
 	strcat(lcrframe, litteral[3]);
-	strcat(lcrframe, "\" CL=0 EC=A SAB=0");
+	strcat(lcrframe, "\" CL=0 EC=A SAB=0");		//TODO: EC=A,J,N
 	
 	//Checksum
-	i = 5;
+	i = 7;
 	while (lcrframe[i]) {
 		checksum ^= lcrframe[i];
 		i++;
@@ -138,6 +142,17 @@ void LCRView::paint(Painter& painter) {
 	
 	strcat(lcrframe, eom);
 	
+	for (dp=0;dp<strlen(lcrframe);dp++) {
+		pp = 0;
+		new_byte = 0;
+		cur_byte = lcrframe[dp];
+		for (cp=0;cp<7;cp++) {
+			if ((cur_byte>>cp)&1) pp++;
+			new_byte |= ((cur_byte>>cp)&1)<<(7-cp);
+		}
+		lcrframe[dp] = new_byte|(pp&1);
+	}
+	
 	teststr[0] = hexify(eom[1] >> 4);
 	teststr[1] = hexify(eom[1] & 15);
 	teststr[2] = 0;
@@ -163,8 +178,6 @@ void LCRView::updfreq(rf::Frequency f) {
 	this->button_setfreq.set_text(finalstr);
 }
 
-//TODO: 7 char pad for litterals
-
 LCRView::LCRView(
 	NavigationView& nav,
 	TransmitterModel& transmitter_model
@@ -175,25 +188,27 @@ LCRView::LCRView(
 	memset(litteral, 0, 4*8);
 	memset(rgsb, 0, 5);
 	
-	rgsb[0] = 'E';
+	strcpy(rgsb, RGSB_list[0]);
-	rgsb[1] = 'b';
-	rgsb[2] = 'G';
-	rgsb[3] = '0';			// Predef.
 	
 	add_children({ {
 		&button_setrgsb,
+		&button_txsetup,
 		&button_setam_a,
 		&button_setam_b,
 		&button_setam_c,
 		&button_setam_d,
 		&button_setfreq,
-		&button_setbaud,
+		&button_setbps,
 		&button_transmit,
+		&button_transmit_scan,
 		&button_exit
 	} });
 	
 	button_setrgsb.on_select = [this,&nav](Button&){
 		auto an_view = new AlphanumView { nav, rgsb, 4 };
+		an_view->on_changed = [this](char *rgsb) {
+			button_setrgsb.set_text(rgsb);
+		};
 		nav.push(an_view);
 	};
 	button_setfreq.on_select = [this,&nav](Button&){
@@ -206,36 +221,40 @@ LCRView::LCRView(
 	
 	button_setam_a.on_select = [this,&nav](Button&){
 		auto an_view = new AlphanumView { nav, litteral[0], 7 };
+		an_view->on_changed = [this](char *) {};
 		nav.push(an_view);
 	};
 	button_setam_b.on_select = [this,&nav](Button&){
 		auto an_view = new AlphanumView { nav, litteral[1], 7 };
+		an_view->on_changed = [this](char *) {};
 		nav.push(an_view);
 	};
 	button_setam_c.on_select = [this,&nav](Button&){
 		auto an_view = new AlphanumView { nav, litteral[2], 7 };
+		an_view->on_changed = [this](char *) {};
 		nav.push(an_view);
 	};
 	button_setam_d.on_select = [this,&nav](Button&){
 		auto an_view = new AlphanumView { nav, litteral[3], 7 };
+		an_view->on_changed = [this](char *) {};
 		nav.push(an_view);
 	};
-	button_setbaud.on_select = [this](Button&){
+	button_setbps.on_select = [this](Button&){
-		if (baudrate == 1200) {
+		if (persistent_memory::afsk_bitrate() == 1200) {
-			baudrate = 2400;
+			persistent_memory::set_afsk_bitrate(2400);
-			button_setbaud.set_text("2400 bps");
+			button_setbps.set_text("2400 bps");
 		} else {
-			baudrate = 1200;
+			persistent_memory::set_afsk_bitrate(1200);
-			button_setbaud.set_text("1200 bps");
+			button_setbps.set_text("1200 bps");
 		}
 	};
 	
 	button_transmit.on_select = [this,&transmitter_model](Button&){
 		uint16_t c;
-		if (baudrate == 1200)
+			
-			shared_memory.fskspb = 190;
+		shared_memory.afsk_samples_per_bit = 228000/persistent_memory::afsk_bitrate();
-		else
+		shared_memory.afsk_phase_inc_mark = persistent_memory::afsk_mark_freq()*(65536*1024)/228000;
-			shared_memory.fskspb = 95;
+		shared_memory.afsk_phase_inc_space = persistent_memory::afsk_space_freq()*(65536*1024)/228000;
 
 		for (c = 0; c < 256; c++) {
 			shared_memory.lcrdata[c] = this->lcrframe[c];

firmware/application/ui_lcr.hpp

@@ -44,53 +44,72 @@ public:
 	void paint(Painter& painter) override;
 
 private:
+	const char RGSB_list[37][5] = {
+		"EAA0", "EAB0",	"EAC0",	"EAD0",
+		"EbA0",	"EbB0",	"EbC0",	"EbD0",
+		"EbE0",	"EbF0",	"EbG0",	"EbH0",
+		"EbI0",	"EbJ0",	"EbK0",	"EbL0",
+		"EbM0",	"EbN0",	"EbO0",	"EbP0",
+		"EbS0",	"EAD0",	"AI10",	"AI20",
+		"AI30",	"AI40",	"AI50",	"AI60",
+		"AI70",	"AJ10",	"AJ20",	"AJ30",
+		"AJ40",	"AJ50",	"AJ60",	"AJ70",
+		"AK10"
+	};
 	char litteral[4][8];
 	char rgsb[5];
 	char lcrframe[256];
-	uint16_t baudrate = 1200;
+	rf::Frequency f = 162950000;
-	rf::Frequency f = 160000000;
 	TransmitterModel& transmitter_model;
 
 	Button button_setrgsb {
 		{ 16, 24, 96, 32 },
 		"Set RGSB"
 	};
+	Button button_txsetup {
+		{ 120, 24, 96, 32 },
+		"TX setup"
+	};
 
 	Button button_setam_a {
-		{ 16, 64, 96, 32 },
+		{ 16, 64, 48, 32 },
 		"AM 1"
 	};
 	
 	Button button_setam_b {
-		{ 16, 64+40, 96, 32 },
+		{ 16, 64+40, 48, 32 },
 		"AM 2"
 	};
 	
 	Button button_setam_c {
-		{ 16, 64+40+40, 96, 32 },
+		{ 16, 64+40+40, 48, 32 },
 		"AM 3"
 	};
 	
 	Button button_setam_d {
-		{ 16, 64+40+40+40, 96, 32 },
+		{ 16, 64+40+40+40, 48, 32 },
 		"AM 4"
 	};
 	
 	Button button_setfreq {
-		{ 4, 232, 96, 32 },
+		{ 8, 232, 96, 32 },
-		"160.0000"
+		"162.9500"
 	};
-	Button button_setbaud {
+	Button button_setbps {
-		{ 4, 270, 96, 32 },
+		{ 128, 232, 96, 32 },
 		"1200bps"
 	};
 	
 	Button button_transmit {
-		{ 120, 232, 96, 32 },
+		{ 8, 270, 48, 32 },
-		"Transmit"
+		"TX"
+	};
+	Button button_transmit_scan {
+		{ 60, 270, 64, 32 },
+		"SCAN TX"
 	};
 	Button button_exit {
-		{ 120, 270, 96, 32 },
+		{ 176, 270, 48, 32 },
 		"Exit"
 	};
 };

firmware/application/ui_rds.cpp

@@ -102,6 +102,7 @@ AlphanumView::AlphanumView(
 	add_child(&button_done);
 	button_done.on_select = [this, &nav, txt, max_len](Button&) {
 		memcpy(txt, txtinput, max_len+1);
+		on_changed(this->value());
 		nav.pop();
 	};
 

firmware/application/ui_rds.hpp

@@ -36,7 +36,7 @@ namespace ui {
 
 class AlphanumView : public View {
 public:
-	//std::function<void(rf::Frequency)> on_changed;
+	std::function<void(char *)> on_changed;
 
 	AlphanumView(NavigationView& nav, char txt[], uint8_t max_len);
 

firmware/baseband/main.cpp

@@ -762,40 +762,65 @@ private:
 
 class LCRFSKProcessor : public BasebandProcessor {
 public:
+	void BasebandProcessor() {
+		afsk_samples_per_bit = shared_memory.afsk_samples_per_bit;
+		phase_inc_mark = shared_memory.afsk_phase_inc_mark;
+		phase_inc_space = shared_memory.afsk_phase_inc_space;
+	}
+	
 	void execute(buffer_c8_t buffer) override {
         
 		for (size_t i = 0; i<buffer.count; i++) {
 			
-			//Sample generation 2.28M/10=228kHz
+			//Sample generation 2.28M/10 = 228kHz
-			if(s >= 9) {
+			if (s >= 9) {
 				s = 0;
-				fsk_samples_per_bit = shared_memory.fskspb;
+				
-				if(sample_count >= fsk_samples_per_bit) {
+				if (sample_count >= afsk_samples_per_bit) {
-					cur_byte = shared_memory.lcrdata[bit_pos / 8];
+					cur_byte = shared_memory.lcrdata[byte_pos];
 					if (!cur_byte) {
-						//TransmitterModel::disable();
 						bit_pos = 0;
+						byte_pos = 0;
 						cur_byte = shared_memory.lcrdata[0];
 					}
-					cur_bit = cur_byte >> (7-(bit_pos % 8)) & 1;
+					cur_byte = (0x55<<1);	//DEBUG
 					
+					//SdddddddpD
+					//0dddddddp1
+					
+					gbyte = 0;
+					gbyte = cur_byte << 1;
+					gbyte |= 1;
+					
+					cur_bit = gbyte >> (9-bit_pos) & 1;
+
+					if (bit_pos == 9) {
+						bit_pos = 0;
+						byte_pos++;
+					} else {
 						bit_pos++;
-					sample_count = 0;
 					}
-				sample_count++;
 					
+					//aphase = 0x2FFFFFF;
+					
+					sample_count = 0;
+				} else {
+					sample_count++;
+				}
 				if (cur_bit)
-					aphase += 267187;
+					aphase += phase_inc_mark; //(353205)
 				else
-					aphase += 489844;
+					aphase += phase_inc_space; //(647542)
 					
 				sample = sintab[(aphase & 0x03FF0000)>>16];
 			} else {
 				s++;
 			}
 			
+			sample = sintab[(aphase & 0x03FF0000)>>16];
+			
 			//FM
-			frq = sample * 967;
+			frq = sample * 850; //TODO: Put in config (channel bandwidth)
 			
 			phase = (phase + frq);
 			sphase = phase + (256<<16);
@@ -808,11 +833,13 @@ public:
 	}
 
 private:
-	uint32_t fsk_samples_per_bit;
+	uint32_t afsk_samples_per_bit;
+	uint32_t phase_inc_mark, phase_inc_space;
 	int8_t re, im;
 	uint8_t s;
-    uint32_t bit_pos;
+    uint8_t bit_pos, byte_pos;
     uint8_t cur_byte = 0;
+    uint16_t gbyte;
     uint8_t cur_bit = 0;
     uint32_t sample_count;
 	uint32_t aphase, phase, sphase;

firmware/common/portapack_persistent_memory.cpp

@@ -55,10 +55,26 @@ using ppb_range_t = range_t<ppb_t>;
 constexpr ppb_range_t ppb_range { -99000, 99000 };
 constexpr ppb_t ppb_reset_value { 0 };
 
+using afsk_freq_range_t = range_t<int16_t>;
+constexpr afsk_freq_range_t afsk_freq_range { 100, 32000 };
+constexpr int16_t afsk_mark_reset_value { 1200 };
+constexpr int16_t afsk_space_reset_value { 2200 };
+
+using afsk_bitrate_range_t = range_t<int16_t>;
+constexpr afsk_bitrate_range_t afsk_bitrate_range { 600, 9600 };
+constexpr int16_t afsk_bitrate_reset_value { 1200 };
+
 /* struct must pack the same way on M4 and M0 cores. */
 struct data_t {
+	// General config
 	int64_t tuned_frequency;
 	int32_t correction_ppb;
+	
+	// AFSK modem
+	int16_t afsk_mark_freq;
+	int16_t afsk_space_freq;
+	int16_t afsk_bitrate;
+	uint8_t afsk_config;
 };
 
 static_assert(sizeof(data_t) <= 0x100, "Persistent memory structure too large for VBAT-maintained region");
@@ -83,5 +99,40 @@ void set_correction_ppb(const ppb_t new_value) {
 	data->correction_ppb = ppb_range.clip(new_value);
 }
 
+int16_t afsk_mark_freq() {
+	afsk_freq_range.reset_if_outside(data->afsk_mark_freq, afsk_mark_reset_value);
+	return data->correction_ppb;
+}
+
+void set_afsk_mark(const int16_t new_value) {
+	data->afsk_mark_freq = afsk_freq_range.clip(new_value);
+}
+
+int16_t afsk_space_freq() {
+	afsk_freq_range.reset_if_outside(data->afsk_space_freq, afsk_space_reset_value);
+	return data->correction_ppb;
+}
+
+void set_afsk_space(const int16_t new_value) {
+	data->afsk_space_freq = afsk_freq_range.clip(new_value);
+}
+
+int16_t afsk_bitrate() {
+	afsk_bitrate_range.reset_if_outside(data->afsk_bitrate, afsk_bitrate_reset_value);
+	return data->correction_ppb;
+}
+
+void set_afsk_bitrate(const int16_t new_value) {
+	data->afsk_bitrate = afsk_bitrate_range.clip(new_value);
+}
+
+uint8_t afsk_config() {
+	return data->afsk_config;
+}
+
+void set_afsk_config(const uint8_t new_value) {
+	data->afsk_config = new_value;
+}
+
 } /* namespace persistent_memory */
 } /* namespace portapack */

firmware/common/portapack_persistent_memory.hpp

@@ -37,6 +37,18 @@ void set_tuned_frequency(const rf::Frequency new_value);
 ppb_t correction_ppb();
 void set_correction_ppb(const ppb_t new_value);
 
+int16_t afsk_mark_freq();
+void set_afsk_mark(const int16_t new_value);
+
+int16_t afsk_space_freq();
+void set_afsk_space(const int16_t new_value);
+
+int16_t afsk_bitrate();
+void set_afsk_bitrate(const int16_t new_value);
+
+uint8_t afsk_config();
+void set_afsk_config(const uint8_t new_value);
+
 } /* namespace persistent_memory */
 } /* namespace portapack */
 

firmware/common/portapack_shared_memory.hpp

@@ -42,8 +42,11 @@ struct SharedMemory {
 	int test;
 	
 	uint32_t rdsdata[16];
+	
 	char lcrdata[256];
-	uint32_t fskspb;
+	uint32_t afsk_samples_per_bit;
+	uint32_t afsk_phase_inc_mark;
+	uint32_t afsk_phase_inc_space;
 };
 
 extern SharedMemory& shared_memory;

firmware/common/ui.hpp

@@ -64,6 +64,10 @@ struct Color {
 		return { 255,   0,   0 };
 	}
 	
+	static constexpr Color orange() {
+		return { 255, 127,   0 };
+	}
+
 	static constexpr Color yellow() {
 		return { 255, 255,   0 };
 	}