Add initial content

18 files changed, 983 insertions, 0 deletions

diff --git a/c/menu/Makefile b/c/menu/Makefile
new file mode 100644
index 0000000..bd92e6a
--- /dev/null
+++ b/c/menu/Makefile
@@ -0,0 +1,44 @@
+CC ?= clang
+CFLAGS_MARCH ?= -march=rv32imacb_zicntr_zicond_zicsr_zifencei_zihintpause_zilsd_zclsd_zabha_zacas_zbkb_zbkx_zcb_zcmp_zcmt
+CFLAGS_OPT ?= -O3
+CFLAGS ?= ${CFLAGS_MARCH} ${CFLAGS_OPT}
+
+ifeq (${CC}, clang)
+	CC := ${CC} -target riscv32-none-elf
+endif
+
+.PHONY: all dump load clean
+
+all: menu.hex
+
+menu.o: menu.c calculator.h digilines.h games.h screensaver.h
+	${CC} -I../rvcontroller-libraries ${CFLAGS} -ffreestanding -c -o menu.o menu.c
+
+calculator.o: calculator.c
+	${CC} -I../rvcontroller-libraries ${CFLAGS} -ffreestanding -c -o calculator.o calculator.c
+
+digilines.o: digilines.c
+	${CC} -I../rvcontroller-libraries ${CFLAGS} -ffreestanding -c -o digilines.o digilines.c
+
+games.o: games.c
+	${CC} -I../rvcontroller-libraries ${CFLAGS} -ffreestanding -c -o games.o games.c
+
+screensaver.o: screensaver.c
+	${CC} -I../rvcontroller-libraries ${CFLAGS} -ffreestanding -c -o screensaver.o screensaver.c
+
+menu.elf: ../rvcontroller-libraries/rvcontroller-init.o ../rvcontroller-libraries/rvcontroller-ecalls.o menu.o calculator.o digilines.o games.o screensaver.o
+# riscv32-none-elf-ld -T rvcontroller.ld --no-warn-rwx-segments -o menu.elf ../rvcontroller-libraries/rvcontroller-init.o ../rvcontroller-libraries/rvcontroller-ecalls.o menu.o calculator.o digilines.o games.o
+	${CC} -T rvcontroller.ld -nostdlib -nostartfiles -Xlinker --no-warn-rwx-segments -o menu.elf ../rvcontroller-libraries/rvcontroller-init.o ../rvcontroller-libraries/rvcontroller-ecalls.o menu.o calculator.o digilines.o games.o screensaver.o
+
+dump: menu.elf
+	riscv32-none-elf-objdump -d menu.elf
+
+menu.hex: menu.elf
+	riscv32-none-elf-objcopy -O ihex menu.elf menu.hex
+
+load: menu.hex
+	bash -c "wl-copy < menu.hex"
+
+clean:
+	rm -f menu.bin menu.elf menu.o init.o calculator.o digilines.o games.o screensaver.o
+
diff --git a/c/menu/calculator.c b/c/menu/calculator.c
new file mode 100644
index 0000000..ff26f07
--- /dev/null
+++ b/c/menu/calculator.c
@@ -0,0 +1,95 @@
+/* Menu Thing for RVController - Calculator
+ * A product of Advanced Mesecons Devices, a Cheapie Systems company
+ * This is free and unencumbered software released into the public domain.
+ * See http://unlicense.org/ for more information */
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "rvcontroller-ecalls.h"
+
+void runCalculator(void) {
+	char input[2] = {0};
+	int32_t num1 = 0;
+	int32_t num2 = 0;
+	int32_t result = 0;
+
+	printstr("\n\n\n\n\n\n");
+	printstr("Enter number 1:\n> ");
+	num1 = readint();
+	printint(num1);
+	printstr("\nEnter number 2:\n> ");
+	num2 = readint();
+	printint(num2);
+
+	bool opok = false;
+	while (!opok) {
+		printstr("\nSelect operation:\n[+-*/%&|^<<>>] > ");
+		readstr(input,2);
+		printstr(input);
+
+		switch (input[0]) {
+			case '<':
+			case '>':
+				// Duplicate the character for these two to give the illusion that I bothered to store both
+				// Then fall through
+				printstr(input);
+			case '+':
+			case '-':
+			case '*':
+			case '/':
+			case '%':
+			case '&':
+			case '|':
+			case '^':
+				printchar('\n');
+				opok = true;
+				break;
+			default:
+				printstr("\nInvalid operation\n");
+		}
+	}
+
+	switch (input[0]) {
+		case '+':
+			printint(num1+num2);
+			break;
+		case '-':
+			printint(num1-num2);
+			break;
+		case '*':
+			printint(num1*num2);
+			break;
+		case '/':
+			printint(num1/num2);
+			break;
+		case '%':
+			printint(num1%num2);
+			break;
+		case '&':
+			printint(num1&num2);
+			break;
+		case '|':
+			printint(num1|num2);
+			break;
+		case '^':
+			printint(num1^num2);
+			break;
+		case '<':
+			if (num2 < 0 || num2 > 31) {
+				printstr("Nice try.");
+			} else {
+				printint(num1<<num2);
+			}
+			break;
+		case '>' :
+			if (num2 < 0 || num2 > 31) {
+				printstr("Nice try.");
+			} else {
+				printint(num1>>num2);
+			}
+			break;
+	}
+
+	printstr("\nPress any key");
+	readstr(input,1);
+}
diff --git a/c/menu/calculator.h b/c/menu/calculator.h
new file mode 100644
index 0000000..4a70356
--- /dev/null
+++ b/c/menu/calculator.h
@@ -0,0 +1,6 @@
+/* Menu Thing for RVController - Calculator
+ * A product of Advanced Mesecons Devices, a Cheapie Systems company
+ * This is free and unencumbered software released into the public domain.
+ * See http://unlicense.org/ for more information */
+
+void runCalculator(void);
diff --git a/c/menu/calculator.o b/c/menu/calculator.o
new file mode 100644
index 0000000..7247432
--- /dev/null
+++ b/c/menu/calculator.o
diff --git a/c/menu/digilines.c b/c/menu/digilines.c
new file mode 100644
index 0000000..620d61f
--- /dev/null
+++ b/c/menu/digilines.c
@@ -0,0 +1,66 @@
+/* Menu Thing for RVController - Digilines
+ * A product of Advanced Mesecons Devices, a Cheapie Systems company
+ * This is free and unencumbered software released into the public domain.
+ * See http://unlicense.org/ for more information */
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "rvcontroller-ecalls.h"
+
+char dispbuf[] = "\nLast channel:\n(none)              \nLast message:\n(none)              \ns: Send\nq: Quit";
+
+void dispWrite(char *text,int pos) {
+	int outpos;
+	for (int i=0;;i++) {
+		if (text[i] == 0) { break; }
+		outpos = pos + i;
+		dispbuf[outpos] = text[i];
+	}
+}
+
+void sendUI(void) {
+	char channeloutbuf[19];
+	char msgoutbuf[19];
+	printstr("\n\n\n\n\nEnter channel:\n> ");
+	readstr(channeloutbuf,19);
+	printstr(channeloutbuf);
+	printstr("\nEnter message:\n> ");
+	readstr(msgoutbuf,19);
+	printstr(msgoutbuf);
+	digiline_send(channeloutbuf,msgoutbuf);
+	printstr("\nSent!\nPress any key");
+	readstr(channeloutbuf,1);
+}
+
+void runDigilines(void) {
+	char channelinbuf[21];
+	char msginbuf[21];
+	char kbinput;
+	bool quit = false;
+
+	console_clearbuffer();
+	digiline_clearbuffer();
+	dispWrite("(none)              ",15);
+	dispWrite("(none)              ",50);
+
+	while (!quit) {
+		if (digiline_bufferlevel() > 0) {
+			digiline_receive(channelinbuf,21,msginbuf,21);
+			dispWrite("                    ",15);
+			dispWrite("                    ",50);
+			dispWrite(channelinbuf,15);
+			dispWrite(msginbuf,50);
+		}
+		printstr(dispbuf);
+
+		kbinput = console_readchar();
+		switch (kbinput) {
+			case 's':
+				sendUI();
+				break;
+			case 'q':
+				quit = true;
+				break;
+		}
+	}
+}
diff --git a/c/menu/digilines.h b/c/menu/digilines.h
new file mode 100644
index 0000000..480623a
--- /dev/null
+++ b/c/menu/digilines.h
@@ -0,0 +1,6 @@
+/* Menu Thing for RVController - Digilines
+ * A product of Advanced Mesecons Devices, a Cheapie Systems company
+ * This is free and unencumbered software released into the public domain.
+ * See http://unlicense.org/ for more information */
+
+void runDigilines(void);
diff --git a/c/menu/digilines.o b/c/menu/digilines.o
new file mode 100644
index 0000000..95a2ac8
--- /dev/null
+++ b/c/menu/digilines.o
diff --git a/c/menu/games.c b/c/menu/games.c
new file mode 100644
index 0000000..574c6f0
--- /dev/null
+++ b/c/menu/games.c
@@ -0,0 +1,121 @@
+/* Menu Thing for RVController - Games
+ * A product of Advanced Mesecons Devices, a Cheapie Systems company
+ * This is free and unencumbered software released into the public domain.
+ * See http://unlicense.org/ for more information */
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "rvcontroller-ecalls.h"
+
+void runCasino(void) {
+	int32_t input;
+	int32_t money = 10;
+	bool quit = false;
+	char strscratch[1];
+
+	printstr("\nCASINO\n");
+
+	while (!quit) {
+		printstr("You have:\n$");
+		printint(money);
+		printstr("\nBet how much?\n(0 to quit)\n> ");
+		input = readint();
+		printint(input);
+		printchar('\n');
+
+		if (input == 0) {
+			quit = true;
+		} else if (input < 0 || input > money) {
+			printstr("Nice try.\n");
+		} else {
+			if (randomint(0,9) >= 6) { // Of course it's not a fair chance. This is a casino, gotta make money here!
+				printstr("You win!\n");
+				money = money + input;
+				if (money >= 1000000000) {
+					printstr("You're a \nbillionaire!\nBest quit while\nyou're ahead...\n\nPress any key");
+					readstr(strscratch,1);
+					quit = true;
+				}
+			} else {
+				printstr("You lose.\n");
+				money = money - input;
+				if (money <= 0) {
+					printstr("You've gambled away\nyour life savings.\nTime to go home...\n\nPress any key");
+					readstr(strscratch,1);
+					quit = true;
+				}
+			}
+		}
+	}
+}
+
+void runGuessNum(void) {
+	int32_t answer = randomint(1,99);
+	int32_t entry;
+	int32_t guesses = 0;
+	uint32_t time = rdtime();
+	bool quit = false;
+	char strscratch[1];
+
+	printstr("GUESS THE NUMBER\nThe computer will\npick a number from\n1 to 99 and you need\nto guess it.\n\nPress any key");
+	readstr(strscratch,1);
+	printstr("\n\n\n\n");
+
+	while (!quit) {
+		printstr("Enter your guess:\n(0 to quit)\n> ");
+		entry = readint();
+		if (entry == 0) {
+			quit = true;
+		}
+		printint(entry);
+		guesses = guesses + 1;
+
+		if (entry == answer) {
+			printstr("\nCorrect!\n\nYou got it in:\n");
+			printint(guesses);
+			printstr(" guess");
+			if (guesses != 1) { printstr("es"); }
+			printchar('\n');
+			time = rdtime() - time;
+			printint(time);
+			printstr(" second");
+			if (time != 1) { printchar('s'); }
+			printstr("\nPress any key");
+			readstr(strscratch,1);
+			quit = true;
+		} else if (entry > answer) {
+			printstr("\nToo high!\n\n");
+		} else {
+			printstr("\nToo low!\n\n");
+		}
+	}
+}
+
+void runGames(void) {
+	char inputbuf[2];
+	bool quit = false;
+	while (!quit) {
+		printstr("\nGAMES\n");
+		printstr("1: Casino\n");
+		printstr("2: Guess the Number\n");
+		printstr("\n\n0: Back");
+		readstr(inputbuf,2);
+
+		switch (inputbuf[0]) {
+			case '0':
+				quit = true;
+				break;
+			case '1':
+				runCasino();
+				quit = true;
+				break;
+			case '2':
+				runGuessNum();
+				quit = true;
+				break;
+			default:
+				printstr("\nInvalid option\n\nPress any key\n\n\n");
+				readstr(inputbuf,2);
+		}
+	}
+}
diff --git a/c/menu/games.h b/c/menu/games.h
new file mode 100644
index 0000000..d2b67be
--- /dev/null
+++ b/c/menu/games.h
@@ -0,0 +1,6 @@
+/* Menu Thing for RVController - Games
+ * A product of Advanced Mesecons Devices, a Cheapie Systems company
+ * This is free and unencumbered software released into the public domain.
+ * See http://unlicense.org/ for more information */
+
+void runGames(void);
diff --git a/c/menu/games.o b/c/menu/games.o
new file mode 100644
index 0000000..749068a
--- /dev/null
+++ b/c/menu/games.o
diff --git a/c/menu/menu.c b/c/menu/menu.c
new file mode 100644
index 0000000..4d3aa14
--- /dev/null
+++ b/c/menu/menu.c
@@ -0,0 +1,74 @@
+/* Menu Thing for RVController - Main Menu
+ * A product of Advanced Mesecons Devices, a Cheapie Systems company
+ * This is free and unencumbered software released into the public domain.
+ * See http://unlicense.org/ for more information */
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "rvcontroller-ecalls.h"
+#include "calculator.h"
+#include "digilines.h"
+#include "games.h"
+#include "screensaver.h"
+
+uint_fast8_t menupage = 0;
+
+void main(void) {
+	char inputbuf[32] = {0}; // Overkill for now but it's not like I'm short on RAM
+	while (true) {
+		switch (menupage) {
+			case 0:
+				printstr("\nMAIN MENU Page 1\n");
+				printstr("< > to change page\n");
+				printstr("1: Calculator\n");
+				printstr("2: Calendar\n");
+				printstr("3: Digilines\n");
+				printstr("4: Games");
+				break;
+			case 1:
+				printstr("\nMAIN MENU Page 2\n");
+				printstr("< > to change page\n");
+				printstr("5: Screensaver\n");
+				printstr("6: Text Editor\n");
+				printstr("More coming soon\n");
+				printstr("(maybe)");
+				break;
+			default:
+				printstr("\nInvalid menu page\n\n\n\n\n\n");
+		}
+
+		readstr(inputbuf,32);
+
+		switch (inputbuf[0]) {
+			case '<':
+				if (menupage > 0) {
+					menupage--;
+				} else {
+					menupage = 1;
+				}
+				break;
+			case '>':
+				menupage = (menupage + 1) % 2;
+				break;
+			case '1':
+				runCalculator();
+				break;
+			case '3':
+				runDigilines();
+				break;
+			case '4':
+				runGames();
+				break;
+			case '5':
+				runScreensaver();
+				break;
+			default:
+				printstr("\nUnknown or\n");
+				printstr("unimplemented\n");
+				printstr("command\n");
+				printstr("\n");
+				printstr("Press any key\n");
+				readstr(inputbuf,32);
+		}
+	}
+}
diff --git a/c/menu/menu.elf b/c/menu/menu.elf
new file mode 100755
index 0000000..92b42fe
--- /dev/null
+++ b/c/menu/menu.elf
diff --git a/c/menu/menu.hex b/c/menu/menu.hex
new file mode 100644
index 0000000..2b96462
--- /dev/null
+++ b/c/menu/menu.hex
@@ -0,0 +1,377 @@
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diff --git a/c/menu/menu.o b/c/menu/menu.o
new file mode 100644
index 0000000..43e4e58
--- /dev/null
+++ b/c/menu/menu.o
diff --git a/c/menu/rvcontroller.ld b/c/menu/rvcontroller.ld
new file mode 100644
index 0000000..985892b
--- /dev/null
+++ b/c/menu/rvcontroller.ld
@@ -0,0 +1,45 @@
+/* Thanks https://github.com/darklife/darkriscv */
+  __heap_size    = 0x200;  /* required amount of heap */
+  __stack_size  = 0x800;  /* required amount of stack */
+  ENTRY(_start);
+  MEMORY
+  {
+    RAM (rwx) : ORIGIN = 0x00000000, LENGTH = 0x10000
+  }
+  SECTIONS
+  {
+    .text :
+    {
+      *(.text.startup)
+      *(.text)
+      *(.text)
+      *(.rodata*)
+    } > RAM
+    .data :
+    {
+      *(.sbss)
+      *(.data)
+      *(.bss)
+      *(.rela*)
+      *(COMMON)
+    } > RAM
+
+    .heap :
+    {
+      . = ALIGN(4);
+      PROVIDE ( end = . );
+      _sheap = .;
+      . = . + __heap_size;
+      . = ALIGN(4);
+      _eheap = .;
+    } >RAM
+
+    .stack :
+    {
+      . = ALIGN(4);
+      _estack = .;
+      . = . + __stack_size;
+      . = ALIGN(4);
+      _sstack = .;
+    } >RAM
+  }
diff --git a/c/menu/screensaver.c b/c/menu/screensaver.c
new file mode 100644
index 0000000..70e1647
--- /dev/null
+++ b/c/menu/screensaver.c
@@ -0,0 +1,137 @@
+/* Menu Thing for RVController - Screensaver
+ * A product of Advanced Mesecons Devices, a Cheapie Systems company
+ * This is free and unencumbered software released into the public domain.
+ * See http://unlicense.org/ for more information */
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "rvcontroller-ecalls.h"
+
+char screensaverbuf[] = "\n                    \n                    \n                    \n                    \n                    \n                    ";
+
+int strlen(char *string) {
+	int i;
+	for (i = 0;string[i] != 0;i++) {}
+	return i;
+}
+
+void screensaverWriteText(char *text, int column, int row, bool erase) {
+	int textlen = strlen(text);
+	if (column < 0) {
+		// Cut the left side off of the text and change the start position to the left side of the screen
+		text = text + (0 - column);
+		textlen = textlen + column;
+		column = 0;
+	} else if (column + textlen > 19) {
+		// Cut the right side off of the text
+		textlen = 20 - column;
+	}
+	for (int i=0;i < textlen;i++) {
+		if (erase) {
+			screensaverbuf[(row*21)+column+i+1] = 0x20;
+		} else {
+			screensaverbuf[(row*21)+column+i+1] = text[i];
+		}
+	}
+}
+
+void doMarquee(void) {
+	char text[] = "RVController ";
+	int col = 19;
+	int row = randomint(0,5);
+	console_clearbuffer();
+	while (console_readchar() == 0) {
+		col--;
+		if (col < (0 - strlen(text))) {
+			col = 20;
+			row = randomint(0,5);
+		}
+		screensaverWriteText(text,col,row,false);
+		printstr(screensaverbuf);
+	}
+	screensaverWriteText(text,col,row,true);
+}
+
+void doBouncingText(void) {
+	char text[] = "RVController";
+	int col = 0;
+	int row = 0;
+	int xdir = 1;
+	int ydir = 1;
+	console_clearbuffer();
+	while (console_readchar() == 0) {
+		screensaverWriteText(text,col,row,true);
+		col = col + xdir;
+		row = row + ydir;
+		if (col <= 0) { xdir = 1; }
+		if (col >= (19 - strlen(text))) { xdir = -1; }
+		if (row <= 0) { ydir = 1; }
+		if (row >= 5) { ydir = -1; }
+		screensaverWriteText(text,col,row,false);
+		printstr(screensaverbuf);
+	}
+	screensaverWriteText(text,col,row,true);
+}
+
+void doMatrix(void) {
+	int row[] = {-8,-4,-1,-5,-2}; // "Random" positions off the top of the screen to give "random" start delays
+	int col[] = {1,18,2,12,9};
+	int len[] = {3,4,5,6,7};
+	char textscratch[] = " ";
+	console_clearbuffer();
+	while (console_readchar() == 0) {
+		for (int i=0;i<=4;i++) {
+			row[i]++;
+			textscratch[0] = randomint(0x21,0x7a);
+			if (row[i] <= 5 && row[i] >= 0) {
+				screensaverWriteText(textscratch,col[i],row[i],false);
+			}
+			if ((row[i] - len[i]) <= 5 && (row[i] - len[i]) >= 0) {
+				screensaverWriteText(textscratch,col[i],(row[i] - len[i]),true);
+			} else if ((row[i] - len[i]) > 5 && randomint(0,1) == 1) {
+				row[i] = 0 - randomint(1,3);
+				col[i] = randomint(0,19);
+				len[i] = randomint(2,8);
+			}
+		}
+		printstr(screensaverbuf);
+	}
+	for (int i=0;i <= 5;i++) {
+		screensaverWriteText("                    ",0,i,true);
+	}
+}
+
+void runScreensaver(void) {
+	char inputbuf[9];
+	bool quit = false;
+	while (!quit) {
+		printstr("\n\n\n\n\n\n\n");
+		printstr("SCREENSAVER\n");
+		printstr("1: Marquee\n");
+		printstr("2: Bouncing Text\n");
+		printstr("3: Matrix\n");
+		printstr("\n");
+		printstr("0: Exit");
+		readstr(inputbuf,2);
+		switch (inputbuf[0]) {
+			case '0':
+				quit = true;
+				break;
+			case '1':
+				doMarquee();
+				quit = true;
+				break;
+			case '2':
+				doBouncingText();
+				quit = true;
+				break;
+			case '3':
+				doMatrix();
+				quit = true;
+				break;
+			default:
+				printstr("\nInvalid option\n\nPress any key\n\n\n");
+				readstr(inputbuf,1);
+		}
+	}
+}
diff --git a/c/menu/screensaver.h b/c/menu/screensaver.h
new file mode 100644
index 0000000..f56811a
--- /dev/null
+++ b/c/menu/screensaver.h
@@ -0,0 +1,6 @@
+/* Menu Thing for RVController - Screensaver
+ * A product of Advanced Mesecons Devices, a Cheapie Systems company
+ * This is free and unencumbered software released into the public domain.
+ * See http://unlicense.org/ for more information */
+
+void runScreensaver(void);
diff --git a/c/menu/screensaver.o b/c/menu/screensaver.o
new file mode 100644
index 0000000..1f725d3
--- /dev/null
+++ b/c/menu/screensaver.o