BaseOS
This commit is contained in:
1
.gitignore
vendored
Normal file
1
.gitignore
vendored
Normal file
@@ -0,0 +1 @@
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.DS_Store
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57
makefile
Executable file
57
makefile
Executable file
@@ -0,0 +1,57 @@
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CROSS = aarch64-none-elf-
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CC = $(CROSS)gcc
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AS = $(CROSS)as
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LD = $(CROSS)ld
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OBJCOPY = $(CROSS)objcopy
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CFLAGS = -O2 -ffreestanding -nostdlib -Wall -Wextra
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LDFLAGS = -T src/linker.ld
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SRC = src
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BUILD = build
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# List all C source files here (update as needed)
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SOURCES_C = $(SRC)/renderer.c $(SRC)/font_pack.c $(SRC)/main.c
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# List assembler source files
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SOURCES_ASM = $(SRC)/boot.s
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# Object files (one per source file)
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OBJ_C = $(patsubst $(SRC)/%.c,$(BUILD)/%.o,$(SOURCES_C))
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OBJ_ASM = $(patsubst $(SRC)/%.s,$(BUILD)/%.o,$(SOURCES_ASM))
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TARGET_ELF = $(BUILD)/kernel.elf
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TARGET_IMG = $(BUILD)/kernel8.img
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.PHONY: all clean run
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all: $(TARGET_IMG)
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# Create build directory if it does not exist
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$(BUILD):
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mkdir -p $(BUILD)
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# Assemble assembly sources
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$(BUILD)/%.o: $(SRC)/%.s | $(BUILD)
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$(AS) $< -o $@
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# Compile C sources
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$(BUILD)/%.o: $(SRC)/%.c | $(BUILD)
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$(CC) $(CFLAGS) -c $< -o $@
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# Link all object files into ELF kernel
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$(TARGET_ELF): $(OBJ_ASM) $(OBJ_C)
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$(LD) $(LDFLAGS) $^ -o $@
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# Convert ELF to raw binary image
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$(TARGET_IMG): $(TARGET_ELF)
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$(OBJCOPY) $< -O binary $@
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clean:
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rm -rf $(BUILD)
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# Run QEMU emulator for Raspberry Pi 3 with serial output redirected to terminal
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run: $(TARGET_IMG)
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sudo qemu-system-aarch64 -M raspi3b -serial stdio -kernel $(TARGET_IMG)
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17
src/boot.s
Normal file
17
src/boot.s
Normal file
@@ -0,0 +1,17 @@
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.section .text
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.global _start
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_start:
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ldr x0, =stack_top
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mov sp, x0
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bl kernel_main
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1:
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b 1b
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.section .bss
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.align 3
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.global stack_top
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stack_top:
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.skip 0x8000 // 32 KB stack
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27
src/color.h
Normal file
27
src/color.h
Normal file
@@ -0,0 +1,27 @@
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#ifndef COLOR_H
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#define COLOR_H
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// Color format: 0xAABBGGRR (BGRA32 - little endian)
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#define COLOR_BLACK 0xFF000000
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#define COLOR_WHITE 0xFFFFFFFF
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#define COLOR_RED 0xFF0000FF
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#define COLOR_GREEN 0xFF00FF00
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#define COLOR_BLUE 0xFFFF0000
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#define COLOR_YELLOW 0xFF00FFFF
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#define COLOR_CYAN 0xFFFFFF00
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#define COLOR_MAGENTA 0xFFFF00FF
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#define COLOR_GRAY 0xFF808080
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#define COLOR_ORANGE 0xFF00A5FF
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#define COLOR_BROWN 0xFF2A2AA5
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#define COLOR_PURPLE 0xFF800080
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#define COLOR_PINK 0xFFCBC0FF
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#define COLOR_LIME 0xFF00FFBF
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#define COLOR_NAVY 0xFF800000
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#define COLOR_TEAL 0xFF808000
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#define COLOR_OLIVE 0xFF008080
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// For custom BGR colors
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#define BGR(r, g, b) (0xFF000000 | ((b) << 16) | ((g) << 8) | (r))
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#endif // COLOR_H
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544
src/font_pack.c
Normal file
544
src/font_pack.c
Normal file
@@ -0,0 +1,544 @@
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#include "font_pack.h"
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// Letter A: Thickened diagonals and vertical legs
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static const uint8_t letter_A_16x16[32] = {
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0b00001111, 0b11100000, // ******
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0b00001111, 0b11100000, // ******
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0b00011100, 0b01110000, // *** ***
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0b00011100, 0b01110000, // *** ***
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0b00111000, 0b00011100, // ** ***
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0b00111000, 0b00011100, // ** ***
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0b01110000, 0b00001110, //*** ***
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0b01110000, 0b00001110, //*** ***
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0b11111111, 0b11111111, //************
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0b11111111, 0b11111111, //************
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0b11100000, 0b00001110, //*** ***
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0b11100000, 0b00001110, //*** ***
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0b11100000, 0b00001110, //*** ***
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0b11100000, 0b00001110, //*** ***
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0b11100000, 0b00001110, //*** ***
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0b00000000, 0b00000000, //
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};
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// Letter B: Thickened vertical and horizontal strokes
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static const uint8_t letter_B_16x16[32] = {
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0b11111111, 0b11100000, //*********
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0b11111111, 0b11100000, //*********
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0b11100000, 0b00111000, //*** ***
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0b11100000, 0b00111000, //*** ***
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0b11100000, 0b00111000, //*** ***
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0b11100000, 0b00111000, //*** ***
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0b11111111, 0b11100000, //*********
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0b11111111, 0b11100000, //*********
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0b11100000, 0b00111000, //*** ***
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0b11100000, 0b00111000, //*** ***
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0b11100000, 0b00111000, //*** ***
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0b11100000, 0b00111000, //*** ***
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0b11111111, 0b11100000, //*********
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0b11111111, 0b11100000, //*********
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0b00000000, 0b00000000, //
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0b00000000, 0b00000000, //
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};
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// Letter C: Thickened curves
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static const uint8_t letter_C_16x16[32] = {
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0b00001111, 0b11100000, // ******
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0b00001111, 0b11100000, // ******
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0b00011100, 0b01110000, // *** ***
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0b00011100, 0b01110000, // *** ***
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0b00111000, 0b00000000, // ***
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0b00111000, 0b00000000, // ***
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0b00111000, 0b00000000, // ***
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0b00111000, 0b00000000, // ***
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0b00111000, 0b00000000, // ***
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0b00111000, 0b00000000, // ***
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0b00011100, 0b01110000, // *** ***
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0b00011100, 0b01110000, // *** ***
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0b00001111, 0b11100000, // ******
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0b00001111, 0b11100000, // ******
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0b00000000, 0b00000000, //
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0b00000000, 0b00000000, //
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};
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// Letter D: Thickened vertical and curved strokes
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static const uint8_t letter_D_16x16[32] = {
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0b11111111, 0b11000000, //********
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0b11111111, 0b11000000, //********
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0b11100000, 0b01100000, //*** **
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0b11100000, 0b01100000, //*** **
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0b11100000, 0b00110000, //*** **
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0b11100000, 0b00110000, //*** **
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0b11100000, 0b00110000, //*** **
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0b11100000, 0b00110000, //*** **
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0b11100000, 0b00110000, //*** **
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0b11100000, 0b00110000, //*** **
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0b11100000, 0b01100000, //*** **
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0b11100000, 0b01100000, //*** **
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0b11111111, 0b11000000, //********
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0b11111111, 0b11000000, //********
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0b00000000, 0b00000000, //
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0b00000000, 0b00000000, //
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};
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// Letter E: Thickened horizontal and vertical strokes
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static const uint8_t letter_E_16x16[32] = {
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0b11111111, 0b11111000, //***********
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0b11111111, 0b11111000, //***********
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0b11100000, 0b00000000, //***
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0b11100000, 0b00000000, //***
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0b11100000, 0b00000000, //***
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0b11100000, 0b00000000, //***
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0b11111111, 0b11100000, //*********
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0b11111111, 0b11100000, //*********
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0b11100000, 0b00000000, //***
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0b11100000, 0b00000000, //***
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0b11100000, 0b00000000, //***
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0b11100000, 0b00000000, //***
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0b11111111, 0b11111000, //***********
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0b11111111, 0b11111000, //***********
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0b00000000, 0b00000000, //
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0b00000000, 0b00000000, //
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};
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// Letter F: Thickened horizontal and vertical strokes
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static const uint8_t letter_F_16x16[32] = {
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0b11111111, 0b11111000, //***********
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0b11111111, 0b11111000, //***********
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0b11100000, 0b00000000, //***
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0b11100000, 0b00000000, //***
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0b11100000, 0b00000000, //***
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0b11100000, 0b00000000, //***
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0b11111111, 0b11100000, //*********
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0b11111111, 0b11100000, //*********
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0b11100000, 0b00000000, //***
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0b11100000, 0b00000000, //***
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0b11100000, 0b00000000, //***
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0b11100000, 0b00000000, //***
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0b11100000, 0b00000000, //***
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0b11100000, 0b00000000, //***
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0b00000000, 0b00000000, //
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0b00000000, 0b00000000, //
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};
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// Letter G: Thickened curves and horizontal bar
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static const uint8_t letter_G_16x16[32] = {
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0b00001111, 0b11100000, // ******
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0b00001111, 0b11100000, // ******
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0b00011100, 0b01110000, // *** ***
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0b00011100, 0b01110000, // *** ***
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0b00111000, 0b00000000, // ***
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0b00111000, 0b00000000, // ***
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0b00111111, 0b11100000, // *** ****
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0b00111111, 0b11100000, // *** ****
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0b00111000, 0b01110000, // *** ***
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0b00111000, 0b01110000, // *** ***
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0b00011100, 0b01110000, // *** ***
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0b00011100, 0b01110000, // *** ***
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0b00001111, 0b11100000, // ******
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0b00001111, 0b11100000, // ******
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0b00000000, 0b00000000, //
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0b00000000, 0b00000000, //
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};
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// Letter H: Thickened vertical and horizontal bars
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static const uint8_t letter_H_16x16[32] = {
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0b11100000, 0b00001110, //*** ***
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0b11100000, 0b00001110, //*** ***
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0b11100000, 0b00001110, //*** ***
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0b11100000, 0b00001110, //*** ***
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0b11100000, 0b00001110, //*** ***
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0b11100000, 0b00001110, //*** ***
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0b11111111, 0b11111111, //************
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0b11111111, 0b11111111, //************
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0b11100000, 0b00001110, //*** ***
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0b11100000, 0b00001110, //*** ***
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0b11100000, 0b00001110, //*** ***
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0b11100000, 0b00001110, //*** ***
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0b11100000, 0b00001110, //*** ***
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0b11100000, 0b00001110, //*** ***
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0b00000000, 0b00000000, //
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0b00000000, 0b00000000, //
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};
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// Letter I: Thickened vertical and horizontal bars
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static const uint8_t letter_I_16x16[32] = {
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0b00001111, 0b11110000, // ******
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||||
0b00001111, 0b11110000, // ******
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0b00000111, 0b00000000, // ***
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0b00000111, 0b00000000, // ***
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0b00000111, 0b00000000, // ***
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0b00000111, 0b00000000, // ***
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0b00000111, 0b00000000, // ***
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||||
0b00000111, 0b00000000, // ***
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0b00000111, 0b00000000, // ***
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||||
0b00000111, 0b00000000, // ***
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0b00000111, 0b00000000, // ***
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||||
0b00000111, 0b00000000, // ***
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||||
0b00001111, 0b11110000, // ******
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||||
0b00001111, 0b11110000, // ******
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||||
0b00000000, 0b00000000, //
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||||
0b00000000, 0b00000000, //
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||||
};
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|
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// Letter J: Thickened vertical and curved strokes
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static const uint8_t letter_J_16x16[32] = {
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0b00000000, 0b01111000, // ****
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||||
0b00000000, 0b01111000, // ****
|
||||
0b00000000, 0b00111000, // ***
|
||||
0b00000000, 0b00111000, // ***
|
||||
0b00000000, 0b00111000, // ***
|
||||
0b00000000, 0b00111000, // ***
|
||||
0b00000000, 0b00111000, // ***
|
||||
0b00000000, 0b00111000, // ***
|
||||
0b11100000, 0b00111000, //*** ***
|
||||
0b11100000, 0b00111000, //*** ***
|
||||
0b01111111, 0b11110000, // ********
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||||
0b01111111, 0b11110000, // ********
|
||||
0b00000000, 0b00000000, //
|
||||
0b00000000, 0b00000000, //
|
||||
0b00000000, 0b00000000, //
|
||||
0b00000000, 0b00000000, //
|
||||
};
|
||||
|
||||
// Letter K: Thickened vertical and diagonal strokes
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||||
static const uint8_t letter_K_16x16[32] = {
|
||||
0b11100000, 0b01100000, //*** **
|
||||
0b11100000, 0b01100000, //*** **
|
||||
0b11100000, 0b11000000, //*** *
|
||||
0b11100000, 0b11000000, //*** *
|
||||
0b11100111, 0b00000000, //*** ***
|
||||
0b11100111, 0b00000000, //*** ***
|
||||
0b11111100, 0b00000000, //**** *
|
||||
0b11111100, 0b00000000, //**** *
|
||||
0b11111000, 0b00000000, //**** *
|
||||
0b11111000, 0b00000000, //**** *
|
||||
0b11111100, 0b00000000, //**** *
|
||||
0b11111100, 0b00000000, //**** *
|
||||
0b11101100, 0b00000000, //*** **
|
||||
0b11101100, 0b00000000, //*** **
|
||||
0b00000000, 0b00000000, //
|
||||
0b00000000, 0b00000000, //
|
||||
};
|
||||
|
||||
// Letter L: Thickened vertical and horizontal strokes
|
||||
static const uint8_t letter_L_16x16[32] = {
|
||||
0b11100000, 0b00000000, //***
|
||||
0b11100000, 0b00000000, //***
|
||||
0b11100000, 0b00000000, //***
|
||||
0b11100000, 0b00000000, //***
|
||||
0b11100000, 0b00000000, //***
|
||||
0b11100000, 0b00000000, //***
|
||||
0b11100000, 0b00000000, //***
|
||||
0b11100000, 0b00000000, //***
|
||||
0b11100000, 0b00000000, //***
|
||||
0b11100000, 0b00000000, //***
|
||||
0b11100000, 0b00000000, //***
|
||||
0b11100000, 0b00000000, //***
|
||||
0b11111111, 0b11111000, //***********
|
||||
0b11111111, 0b11111000, //***********
|
||||
0b00000000, 0b00000000, //
|
||||
0b00000000, 0b00000000, //
|
||||
};
|
||||
|
||||
// Letter M: Thickened vertical and diagonal strokes
|
||||
static const uint8_t letter_M_16x16[32] = {
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11110000, 0b00011110, //**** ****
|
||||
0b11110000, 0b00011110, //**** ****
|
||||
0b11111000, 0b00111110, //**** *****
|
||||
0b11111000, 0b00111110, //**** *****
|
||||
0b11101100, 0b01101110, //*** ** ***
|
||||
0b11101100, 0b01101110, //*** ** ***
|
||||
0b11100110, 0b11001110, //*** *** ***
|
||||
0b11100110, 0b11001110, //*** *** ***
|
||||
0b11100011, 0b10001110, //*** ** ***
|
||||
0b11100011, 0b10001110, //*** ** ***
|
||||
0b11100001, 0b00001110, //*** ***
|
||||
0b11100001, 0b00001110, //*** ***
|
||||
0b00000000, 0b00000000, //
|
||||
0b00000000, 0b00000000, //
|
||||
};
|
||||
|
||||
// Letter N: Thickened vertical and diagonal strokes
|
||||
static const uint8_t letter_N_16x16[32] = {
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11110000, 0b00001110, //**** ***
|
||||
0b11110000, 0b00001110, //**** ***
|
||||
0b11111000, 0b00001110, //**** ***
|
||||
0b11111000, 0b00001110, //**** ***
|
||||
0b11101100, 0b00001110, //*** * ***
|
||||
0b11101100, 0b00001110, //*** * ***
|
||||
0b11100110, 0b00001110, //*** * ***
|
||||
0b11100110, 0b00001110, //*** * ***
|
||||
0b11100011, 0b00001110, //*** * ***
|
||||
0b11100011, 0b00001110, //*** * ***
|
||||
0b11100001, 0b00001110, //*** ***
|
||||
0b11100001, 0b00001110, //*** ***
|
||||
0b00000000, 0b00000000, //
|
||||
0b00000000, 0b00000000, //
|
||||
};
|
||||
|
||||
// Letter O: Thickened curves
|
||||
static const uint8_t letter_O_16x16[32] = {
|
||||
0b00001111, 0b11100000, // ******
|
||||
0b00001111, 0b11100000, // ******
|
||||
0b00011100, 0b01110000, // *** ***
|
||||
0b00011100, 0b01110000, // *** ***
|
||||
0b00111000, 0b00011100, // *** ***
|
||||
0b00111000, 0b00011100, // *** ***
|
||||
0b00111000, 0b00011100, // *** ***
|
||||
0b00111000, 0b00011100, // *** ***
|
||||
0b00111000, 0b00011100, // *** ***
|
||||
0b00111000, 0b00011100, // *** ***
|
||||
0b00011100, 0b01110000, // *** ***
|
||||
0b00011100, 0b01110000, // *** ***
|
||||
0b00001111, 0b11100000, // ******
|
||||
0b00001111, 0b11100000, // ******
|
||||
0b00000000, 0b00000000, //
|
||||
0b00000000, 0b00000000, //
|
||||
};
|
||||
|
||||
// Letter P: Thickened vertical and horizontal strokes
|
||||
static const uint8_t letter_P_16x16[32] = {
|
||||
0b11111111, 0b11100000, //*********
|
||||
0b11111111, 0b11100000, //*********
|
||||
0b11100000, 0b00111000, //*** ***
|
||||
0b11100000, 0b00111000, //*** ***
|
||||
0b11100000, 0b00111000, //*** ***
|
||||
0b11100000, 0b00111000, //*** ***
|
||||
0b11111111, 0b11100000, //*********
|
||||
0b11111111, 0b11100000, //*********
|
||||
0b11100000, 0b00000000, //***
|
||||
0b11100000, 0b00000000, //***
|
||||
0b11100000, 0b00000000, //***
|
||||
0b11100000, 0b00000000, //***
|
||||
0b11100000, 0b00000000, //***
|
||||
0b11100000, 0b00000000, //***
|
||||
0b00000000, 0b00000000, //
|
||||
0b00000000, 0b00000000, //
|
||||
};
|
||||
|
||||
// Letter Q: Thickened curves and diagonal tail
|
||||
static const uint8_t letter_Q_16x16[32] = {
|
||||
0b00001111, 0b11100000, // ******
|
||||
0b00001111, 0b11100000, // ******
|
||||
0b00011100, 0b01110000, // *** ***
|
||||
0b00011100, 0b01110000, // *** ***
|
||||
0b00111000, 0b00011100, // *** ***
|
||||
0b00111000, 0b00011100, // *** ***
|
||||
0b00111000, 0b00011100, // *** ***
|
||||
0b00111010, 0b00111000, // *** ***
|
||||
0b00111001, 0b01110000, // *** ***
|
||||
0b00111000, 0b11100000, // *** ***
|
||||
0b00011111, 0b11000000, // **** *
|
||||
0b00011111, 0b11000000, // **** *
|
||||
0b00001111, 0b11100000, // ******
|
||||
0b00001111, 0b11100000, // ******
|
||||
0b00000000, 0b00000000, //
|
||||
0b00000000, 0b00000000, //
|
||||
};
|
||||
|
||||
// Letter R: Thickened vertical, horizontal, and diagonal strokes
|
||||
static const uint8_t letter_R_16x16[32] = {
|
||||
0b11111111, 0b11100000, //*********
|
||||
0b11111111, 0b11100000, //*********
|
||||
0b11100000, 0b00111000, //*** ***
|
||||
0b11100000, 0b00111000, //*** ***
|
||||
0b11100000, 0b00111000, //*** ***
|
||||
0b11100000, 0b00111000, //*** ***
|
||||
0b11111111, 0b11100000, //*********
|
||||
0b11111111, 0b11100000, //*********
|
||||
0b11100000, 0b11000000, //*** *
|
||||
0b11100000, 0b11000000, //*** *
|
||||
0b11100000, 0b01100000, //*** *
|
||||
0b11100000, 0b00110000, //*** *
|
||||
0b11100000, 0b00011000, //*** *
|
||||
0b11100000, 0b00001100, //*** *
|
||||
0b00000000, 0b00000000, //
|
||||
0b00000000, 0b00000000, //
|
||||
};
|
||||
|
||||
// Letter S: Thickened curves
|
||||
static const uint8_t letter_S_16x16[32] = {
|
||||
0b00001111, 0b11100000, // ******
|
||||
0b00001111, 0b11100000, // ******
|
||||
0b00011100, 0b01110000, // *** ***
|
||||
0b00011100, 0b01110000, // *** ***
|
||||
0b00111000, 0b00000000, // ***
|
||||
0b00111000, 0b00000000, // ***
|
||||
0b00001111, 0b11100000, // ******
|
||||
0b00001111, 0b11100000, // ******
|
||||
0b00000000, 0b01110000, // ***
|
||||
0b00000000, 0b01110000, // ***
|
||||
0b00000000, 0b01110000, // ***
|
||||
0b00111000, 0b00011100, // *** ***
|
||||
0b00011111, 0b11100000, // ******
|
||||
0b00011111, 0b11100000, // ******
|
||||
0b00000000, 0b00000000, //
|
||||
0b00000000, 0b00000000, //
|
||||
};
|
||||
|
||||
// Letter T: Thickened horizontal and vertical strokes
|
||||
static const uint8_t letter_T_16x16[32] = {
|
||||
0b11111111, 0b11111000, //***********
|
||||
0b11111111, 0b11111000, //***********
|
||||
0b00000111, 0b00000000, // ***
|
||||
0b00000111, 0b00000000, // ***
|
||||
0b00000111, 0b00000000, // ***
|
||||
0b00000111, 0b00000000, // ***
|
||||
0b00000111, 0b00000000, // ***
|
||||
0b00000111, 0b00000000, // ***
|
||||
0b00000111, 0b00000000, // ***
|
||||
0b00000111, 0b00000000, // ***
|
||||
0b00000111, 0b00000000, // ***
|
||||
0b00000111, 0b00000000, // ***
|
||||
0b00000111, 0b00000000, // ***
|
||||
0b00000111, 0b00000000, // ***
|
||||
0b00000000, 0b00000000, //
|
||||
0b00000000, 0b00000000, //
|
||||
};
|
||||
|
||||
// Letter U: Thickened vertical and curved strokes
|
||||
static const uint8_t letter_U_16x16[32] = {
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b01111111, 0b11111000, // *********
|
||||
0b01111111, 0b11111000, // *********
|
||||
0b00000000, 0b00000000, //
|
||||
0b00000000, 0b00000000, //
|
||||
0b00000000, 0b00000000, //
|
||||
0b00000000, 0b00000000, //
|
||||
};
|
||||
|
||||
// Letter V: Thickened diagonal strokes
|
||||
static const uint8_t letter_V_16x16[32] = {
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b01110000, 0b00011100, // ** ***
|
||||
0b01110000, 0b00011100, // ** ***
|
||||
0b00111000, 0b00111000, // ** ***
|
||||
0b00111000, 0b00111000, // ** ***
|
||||
0b00011100, 0b01110000, // ** ***
|
||||
0b00011100, 0b01110000, // ** ***
|
||||
0b00001110, 0b11100000, // ** **
|
||||
0b00001110, 0b11100000, // ** **
|
||||
0b00000111, 0b11000000, // ***
|
||||
0b00000000, 0b00000000, //
|
||||
0b00000000, 0b00000000, //
|
||||
};
|
||||
|
||||
// Letter W: Thickened vertical and diagonal strokes
|
||||
static const uint8_t letter_W_16x16[32] = {
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11100111, 0b00011100, //*** ***
|
||||
0b11100111, 0b00011100, //*** ***
|
||||
0b11101110, 0b00111000, //*** ***
|
||||
0b11101110, 0b00111000, //*** ***
|
||||
0b11111100, 0b01110000, //**** ***
|
||||
0b11111100, 0b01110000, //**** ***
|
||||
0b11111000, 0b11100000, //**** ***
|
||||
0b11111000, 0b11100000, //**** ***
|
||||
0b11111100, 0b11000000, //***** **
|
||||
0b11111100, 0b11000000, //***** **
|
||||
0b00000000, 0b00000000, //
|
||||
0b00000000, 0b00000000, //
|
||||
};
|
||||
|
||||
// Letter X: Thickened diagonal strokes
|
||||
static const uint8_t letter_X_16x16[32] = {
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b01110000, 0b00011100, // ** ***
|
||||
0b01110000, 0b00011100, // ** ***
|
||||
0b00111000, 0b00111000, // ** ***
|
||||
0b00111000, 0b00111000, // ** ***
|
||||
0b00011100, 0b01110000, // ** ***
|
||||
0b00011100, 0b01110000, // ** ***
|
||||
0b00001110, 0b11100000, // ** **
|
||||
0b00001110, 0b11100000, // ** **
|
||||
0b00011100, 0b01110000, // ** ***
|
||||
0b00011100, 0b01110000, // ** ***
|
||||
0b01110000, 0b00011100, // ** ***
|
||||
0b01110000, 0b00011100, // ** ***
|
||||
0b00000000, 0b00000000, //
|
||||
0b00000000, 0b00000000, //
|
||||
};
|
||||
|
||||
// Letter Y: Thickened diagonal and vertical strokes
|
||||
static const uint8_t letter_Y_16x16[32] = {
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b11100000, 0b00001110, //*** ***
|
||||
0b01110000, 0b00011100, // ** ***
|
||||
0b01110000, 0b00011100, // ** ***
|
||||
0b00111000, 0b00111000, // ** ***
|
||||
0b00111000, 0b00111000, // ** ***
|
||||
0b00011100, 0b01110000, // ** ***
|
||||
0b00011100, 0b01110000, // ** ***
|
||||
0b00001110, 0b11100000, // ** **
|
||||
0b00001110, 0b11100000, // ** **
|
||||
0b00001110, 0b11100000, // ** **
|
||||
0b00001110, 0b11100000, // ** **
|
||||
0b00001110, 0b11100000, // ** **
|
||||
0b00001110, 0b11100000, // ** **
|
||||
0b00000000, 0b00000000, //
|
||||
0b00000000, 0b00000000, //
|
||||
};
|
||||
|
||||
// Letter Z: Thickened horizontal and diagonal strokes
|
||||
static const uint8_t letter_Z_16x16[32] = {
|
||||
0b11111111, 0b11111000, //***********
|
||||
0b11111111, 0b11111000, //***********
|
||||
0b00000000, 0b11100000, // ***
|
||||
0b00000000, 0b11100000, // ***
|
||||
0b00000001, 0b11000000, // **
|
||||
0b00000001, 0b11000000, // **
|
||||
0b00000011, 0b10000000, // **
|
||||
0b00000011, 0b10000000, // **
|
||||
0b00000111, 0b00000000, // ***
|
||||
0b00000111, 0b00000000, // ***
|
||||
0b00001110, 0b00000000, // ***
|
||||
0b00001110, 0b00000000, // ***
|
||||
0b11111111, 0b11111000, //***********
|
||||
0b11111111, 0b11111000, //***********
|
||||
0b00000000, 0b00000000, //
|
||||
0b00000000, 0b00000000, //
|
||||
};
|
||||
|
||||
|
||||
// Font bitmaps array
|
||||
static const uint8_t *font_bitmaps_16x16[26] = {
|
||||
letter_A_16x16, letter_B_16x16, letter_C_16x16, letter_D_16x16, letter_E_16x16,
|
||||
letter_F_16x16, letter_G_16x16, letter_H_16x16, letter_I_16x16, letter_J_16x16,
|
||||
letter_K_16x16, letter_L_16x16, letter_M_16x16, letter_N_16x16, letter_O_16x16,
|
||||
letter_P_16x16, letter_Q_16x16, letter_R_16x16, letter_S_16x16, letter_T_16x16,
|
||||
letter_U_16x16, letter_V_16x16, letter_W_16x16, letter_X_16x16, letter_Y_16x16,
|
||||
letter_Z_16x16
|
||||
};
|
||||
|
||||
// Font pack structure
|
||||
const FontPack basic_font_pack = {
|
||||
.bitmaps = {
|
||||
letter_A_16x16, letter_B_16x16, letter_C_16x16, letter_D_16x16, letter_E_16x16,
|
||||
letter_F_16x16, letter_G_16x16, letter_H_16x16, letter_I_16x16, letter_J_16x16,
|
||||
letter_K_16x16, letter_L_16x16, letter_M_16x16, letter_N_16x16, letter_O_16x16,
|
||||
letter_P_16x16, letter_Q_16x16, letter_R_16x16, letter_S_16x16, letter_T_16x16,
|
||||
letter_U_16x16, letter_V_16x16, letter_W_16x16, letter_X_16x16, letter_Y_16x16,
|
||||
letter_Z_16x16
|
||||
}
|
||||
};
|
||||
22
src/font_pack.h
Normal file
22
src/font_pack.h
Normal file
@@ -0,0 +1,22 @@
|
||||
#ifndef FONT_PACK_H
|
||||
#define FONT_PACK_H
|
||||
#include <stdint.h>
|
||||
|
||||
#define FONT_WIDTH 16
|
||||
#define FONT_HEIGHT 16
|
||||
#define FONT_BITMAP_SIZE ((FONT_WIDTH * FONT_HEIGHT) / 8) // 32 bytes per character
|
||||
static const uint8_t empty_char_16x16[32] = {0};
|
||||
|
||||
typedef struct {
|
||||
const uint8_t *bitmaps[26]; // Pointers to each 16x16 bitmap
|
||||
} FontPack;
|
||||
|
||||
extern const FontPack basic_font_pack;
|
||||
|
||||
static inline const uint8_t *font_get_char_bitmap(const FontPack *pack, char c) {
|
||||
if (c >= 'A' && c <= 'Z')
|
||||
return pack->bitmaps[c - 'A'];
|
||||
return empty_char_16x16; // Or point to empty_char_16x16
|
||||
}
|
||||
|
||||
#endif // FONT_PACK_H
|
||||
64
src/io.h
Normal file
64
src/io.h
Normal file
@@ -0,0 +1,64 @@
|
||||
#ifndef UART_IO_H
|
||||
#define UART_IO_H
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
#define UART0_BASE 0x3F201000
|
||||
#define UART0_DR (*((volatile uint32_t *)(UART0_BASE + 0x00)))
|
||||
#define UART0_FR (*((volatile uint32_t *)(UART0_BASE + 0x18)))
|
||||
|
||||
typedef struct UART_IO {
|
||||
void (*putc)(char c);
|
||||
void (*puts)(const char* str);
|
||||
char (*getc)(void);
|
||||
void (*print_int)(unsigned int value);
|
||||
} UART_IO;
|
||||
|
||||
// Function implementations
|
||||
|
||||
static void uart_putc(char c)
|
||||
{
|
||||
while (UART0_FR & (1 << 5)) { } // Wait while TXFF is set
|
||||
UART0_DR = c;
|
||||
}
|
||||
|
||||
static void uart_puts(const char* str)
|
||||
{
|
||||
while (*str)
|
||||
uart_putc(*str++);
|
||||
}
|
||||
|
||||
static char uart_getc(void)
|
||||
{
|
||||
while (UART0_FR & (1 << 4)) { } // Wait while RXFE is set
|
||||
return (char)(UART0_DR & 0xFF);
|
||||
}
|
||||
|
||||
static void uart_print_int(unsigned int value)
|
||||
{
|
||||
char buffer[10];
|
||||
int i = 0;
|
||||
|
||||
if (value == 0) {
|
||||
uart_putc('0');
|
||||
return;
|
||||
}
|
||||
|
||||
while (value > 0 && i < 10) {
|
||||
buffer[i++] = (value % 10) + '0';
|
||||
value /= 10;
|
||||
}
|
||||
|
||||
while (i--)
|
||||
uart_putc(buffer[i]);
|
||||
}
|
||||
|
||||
// UART_IO instance with function pointers assigned
|
||||
static const UART_IO uart_io = {
|
||||
.putc = uart_putc,
|
||||
.puts = uart_puts,
|
||||
.getc = uart_getc,
|
||||
.print_int = uart_print_int,
|
||||
};
|
||||
|
||||
#endif // UART_IO_H
|
||||
10
src/linker.ld
Normal file
10
src/linker.ld
Normal file
@@ -0,0 +1,10 @@
|
||||
ENTRY(_start)
|
||||
SECTIONS {
|
||||
. = 0x80000;
|
||||
.text : { *(.text*) }
|
||||
.rodata : { *(.rodata*) }
|
||||
.data : { *(.data*) }
|
||||
.bss : { *(.bss*) }
|
||||
. = ALIGN(8);
|
||||
stack_top = . + 0x8000;
|
||||
}
|
||||
70
src/main.c
Normal file
70
src/main.c
Normal file
@@ -0,0 +1,70 @@
|
||||
#include "renderer.h"
|
||||
#include "color.h"
|
||||
#include "font_pack.h"
|
||||
#include "io.h"
|
||||
|
||||
int kernel_main(void)
|
||||
{
|
||||
uart_io.puts("Initializing renderer...\n");
|
||||
|
||||
Renderer renderer;
|
||||
if (!renderer_init(&renderer))
|
||||
{
|
||||
uart_io.puts("Failed to allocate framebuffer.\n");
|
||||
while (1)
|
||||
;
|
||||
}
|
||||
|
||||
uart_io.puts("Framebuffer allocated.\n");
|
||||
uart_io.puts("Width: ");
|
||||
uart_io.print_int(renderer.width);
|
||||
uart_io.puts("\nHeight: ");
|
||||
uart_io.print_int(renderer.height);
|
||||
uart_io.putc('\n');
|
||||
|
||||
RenderObject background = {0, 0, renderer.width, renderer.height, COLOR_RED};
|
||||
RenderObject blue_rect = {100, 100, 100, 100, COLOR_BLUE};
|
||||
|
||||
RenderText text = {
|
||||
.base = {
|
||||
.x = 20,
|
||||
.y = 30,
|
||||
.color = 0xFFFFFFFF},
|
||||
.text = "HELLO MARIO",
|
||||
.font = &basic_font_pack,
|
||||
};
|
||||
uart_io.puts("Use WASD keys to move the rectangle.\n");
|
||||
|
||||
// Initial draw
|
||||
renderer.clear_screen(&renderer, background.color);
|
||||
renderer.draw_rect(&renderer, &blue_rect);
|
||||
renderer.draw_text(&renderer, &text);
|
||||
|
||||
while (1)
|
||||
{
|
||||
char c = uart_io.getc();
|
||||
uart_io.putc(c);
|
||||
|
||||
// Movement
|
||||
if ((c == 'w' || c == 'W') && blue_rect.y > 0)
|
||||
blue_rect.y = (blue_rect.y > 10) ? blue_rect.y - 10 : 0;
|
||||
if ((c == 's' || c == 'S') && (blue_rect.y + blue_rect.height) < renderer.height)
|
||||
blue_rect.y += 10;
|
||||
if ((c == 'a' || c == 'A') && blue_rect.x > 0)
|
||||
blue_rect.x = (blue_rect.x > 10) ? blue_rect.x - 10 : 0;
|
||||
if ((c == 'd' || c == 'D') && (blue_rect.x + blue_rect.width) < renderer.width)
|
||||
blue_rect.x += 10;
|
||||
|
||||
// Redraw everything
|
||||
renderer.clear_screen(&renderer, background.color);
|
||||
renderer.draw_rect(&renderer, &blue_rect);
|
||||
renderer.draw_text(&renderer, &text);
|
||||
|
||||
// Print updated position
|
||||
uart_io.puts("\nRect X: ");
|
||||
uart_io.print_int(blue_rect.x);
|
||||
uart_io.puts(" Y: ");
|
||||
uart_io.print_int(blue_rect.y);
|
||||
uart_io.putc('\n');
|
||||
}
|
||||
}
|
||||
174
src/renderer.c
Normal file
174
src/renderer.c
Normal file
@@ -0,0 +1,174 @@
|
||||
#include "renderer.h"
|
||||
#include "font_pack.h"
|
||||
|
||||
#define MBOX_CH_PROP 8
|
||||
#define MBOX_BASE 0x3F00B880
|
||||
|
||||
volatile unsigned int __attribute__((aligned(16))) mbox[36];
|
||||
|
||||
// Small delay loop
|
||||
static inline void delay(int n)
|
||||
{
|
||||
while (n--)
|
||||
__asm__ volatile("nop");
|
||||
}
|
||||
|
||||
// Mailbox call function for communication with GPU
|
||||
unsigned int mailbox_call(unsigned int channel)
|
||||
{
|
||||
unsigned int r = ((unsigned int)((unsigned long)&mbox) & ~0xF) | (channel & 0xF);
|
||||
|
||||
// Wait until mailbox not full
|
||||
while (*(volatile unsigned int *)(MBOX_BASE + 0x18) & 0x80000000)
|
||||
delay(100);
|
||||
|
||||
// Write the channel combined with mailbox address
|
||||
*(volatile unsigned int *)(MBOX_BASE + 0x20) = r;
|
||||
|
||||
while (1)
|
||||
{
|
||||
// Wait for response
|
||||
while (*(volatile unsigned int *)(MBOX_BASE + 0x18) & 0x40000000)
|
||||
delay(100);
|
||||
|
||||
// Check if response is for our message
|
||||
if (*(volatile unsigned int *)(MBOX_BASE + 0x00) == r)
|
||||
{
|
||||
// Return true if response is successful
|
||||
return mbox[1] == 0x80000000;
|
||||
}
|
||||
}
|
||||
}
|
||||
void draw_text_impl(Renderer *renderer, RenderText *text_obj) {
|
||||
if (!renderer || !text_obj || !text_obj->text || !text_obj->font) {
|
||||
return; // Invalid inputs
|
||||
}
|
||||
|
||||
unsigned int x0 = text_obj->base.x;
|
||||
unsigned int y0 = text_obj->base.y;
|
||||
unsigned int color = text_obj->base.color;
|
||||
const char *str = text_obj->text;
|
||||
|
||||
// For each character in string
|
||||
for (const char *p = str; *p != '\0'; p++) {
|
||||
unsigned char c = (unsigned char)*p; // Ensure unsigned char for safety
|
||||
|
||||
// Get bitmap (guaranteed non-NULL due to empty_char_16x16 fallback)
|
||||
const uint8_t *bitmap = font_get_char_bitmap(text_obj->font, c);
|
||||
|
||||
// Draw this single character (16x16)
|
||||
for (unsigned int y = 0; y < FONT_HEIGHT; y++) {
|
||||
// Read two bytes separately to avoid alignment issues
|
||||
uint16_t row = ((uint16_t)bitmap[y * 2] << 8) | bitmap[y * 2 + 1];
|
||||
for (unsigned int bit = 0; bit < FONT_WIDTH; bit++) {
|
||||
if (row & (1 << (15 - bit))) { // Check 16 bits, MSB first
|
||||
unsigned int px = x0 + bit;
|
||||
unsigned int py = y0 + y;
|
||||
if (px < renderer->width && py < renderer->height) {
|
||||
// Assume 32-bit pixels; pitch in bytes
|
||||
unsigned int *pixel = &renderer->fb[py * (renderer->pitch / 4) + px];
|
||||
*pixel = color;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
// Advance x for next char
|
||||
x0 += FONT_WIDTH + 1;
|
||||
}
|
||||
}
|
||||
// Initialize the framebuffer via mailbox property channel
|
||||
bool renderer_init(Renderer *renderer)
|
||||
{
|
||||
mbox[0] = 35 * 4; // Buffer size in bytes
|
||||
mbox[1] = 0; // Request
|
||||
|
||||
// Set physical width and height
|
||||
mbox[2] = 0x48003;
|
||||
mbox[3] = 8;
|
||||
mbox[4] = 8;
|
||||
mbox[5] = 640;
|
||||
mbox[6] = 480;
|
||||
|
||||
// Set virtual width and height
|
||||
mbox[7] = 0x48004;
|
||||
mbox[8] = 8;
|
||||
mbox[9] = 8;
|
||||
mbox[10] = 640;
|
||||
mbox[11] = 480;
|
||||
|
||||
// Set depth (bits per pixel)
|
||||
mbox[12] = 0x48005;
|
||||
mbox[13] = 4;
|
||||
mbox[14] = 4;
|
||||
mbox[15] = 32;
|
||||
|
||||
// Allocate framebuffer
|
||||
mbox[16] = 0x40001;
|
||||
mbox[17] = 8;
|
||||
mbox[18] = 8;
|
||||
mbox[19] = 16; // alignment
|
||||
mbox[20] = 0;
|
||||
|
||||
// Get pitch
|
||||
mbox[21] = 0x40008;
|
||||
mbox[22] = 4;
|
||||
mbox[23] = 4;
|
||||
mbox[24] = 0;
|
||||
|
||||
// End tag
|
||||
mbox[25] = 0;
|
||||
|
||||
if (!mailbox_call(MBOX_CH_PROP))
|
||||
return false;
|
||||
|
||||
renderer->width = mbox[5];
|
||||
renderer->height = mbox[6];
|
||||
renderer->pitch = mbox[24];
|
||||
renderer->fb = (volatile unsigned int *)(mbox[19] & 0x3FFFFFFF);
|
||||
|
||||
renderer->clear_screen = clear_screen_impl;
|
||||
renderer->draw_rect = draw_rect_impl;
|
||||
renderer->draw_text = draw_text_impl;
|
||||
renderer->draw_objects = draw_objects_impl;
|
||||
|
||||
return true;
|
||||
}
|
||||
// Render function implementations
|
||||
|
||||
void clear_screen_impl(Renderer *renderer, unsigned int color)
|
||||
{
|
||||
for (unsigned int y = 0; y < renderer->height; y++)
|
||||
{
|
||||
for (unsigned int x = 0; x < renderer->width; x++)
|
||||
{
|
||||
renderer->fb[y * (renderer->pitch / 4) + x] = color;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void draw_rect_impl(Renderer *renderer, RenderObject *obj)
|
||||
{
|
||||
unsigned int max_y = obj->y + obj->height;
|
||||
unsigned int max_x = obj->x + obj->width;
|
||||
|
||||
if (max_y > renderer->height)
|
||||
max_y = renderer->height;
|
||||
if (max_x > renderer->width)
|
||||
max_x = renderer->width;
|
||||
|
||||
for (unsigned int y = obj->y; y < max_y; y++)
|
||||
{
|
||||
for (unsigned int x = obj->x; x < max_x; x++)
|
||||
{
|
||||
renderer->fb[y * (renderer->pitch / 4) + x] = obj->color;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void draw_objects_impl(Renderer *renderer, RenderObject *objs[], unsigned int count)
|
||||
{
|
||||
for (unsigned int i = 0; i < count; i++)
|
||||
{
|
||||
draw_rect_impl(renderer, objs[i]);
|
||||
}
|
||||
}
|
||||
59
src/renderer.h
Normal file
59
src/renderer.h
Normal file
@@ -0,0 +1,59 @@
|
||||
#ifndef RENDERER_H
|
||||
#define RENDERER_H
|
||||
|
||||
#include <stddef.h>
|
||||
#include <stdbool.h>
|
||||
#include "font_pack.h"
|
||||
|
||||
typedef struct RenderObject {
|
||||
unsigned int x, y;
|
||||
unsigned int width, height;
|
||||
unsigned int color;
|
||||
} RenderObject;
|
||||
|
||||
typedef struct RenderText {
|
||||
RenderObject base; // Position, size, color
|
||||
const char *text; // String to render
|
||||
const FontPack *font; // Font used for rendering
|
||||
} RenderText;
|
||||
|
||||
typedef struct Renderer {
|
||||
volatile unsigned int *fb;
|
||||
unsigned int width;
|
||||
unsigned int height;
|
||||
unsigned int pitch;
|
||||
|
||||
void (*clear_screen)(struct Renderer *renderer, unsigned int color);
|
||||
void (*draw_rect)(struct Renderer *renderer, RenderObject *obj);
|
||||
void (*draw_text)(struct Renderer *renderer, RenderText *text);
|
||||
void (*draw_objects)(struct Renderer *renderer, RenderObject *objs[], unsigned int count);
|
||||
} Renderer;
|
||||
|
||||
// ===== Window definition =====
|
||||
typedef struct Window {
|
||||
RenderObject frame; // Outer frame of the window
|
||||
RenderObject content_area; // Area inside window (excluding titlebar)
|
||||
RenderText title_bar; // Title bar text
|
||||
unsigned int background_color; // Background fill color for content
|
||||
bool visible; // Visibility flag
|
||||
} Window;
|
||||
|
||||
// Function to initialize a Window
|
||||
void window_init(Window *win,
|
||||
unsigned int x, unsigned int y,
|
||||
unsigned int width, unsigned int height,
|
||||
const char *title, const FontPack *font,
|
||||
unsigned int title_color, unsigned int bg_color,
|
||||
unsigned int text_color);
|
||||
|
||||
// Function to render the Window
|
||||
void window_draw(Renderer *renderer, Window *win);
|
||||
|
||||
// ===== Renderer functions =====
|
||||
bool renderer_init(Renderer *renderer);
|
||||
void clear_screen_impl(Renderer *renderer, unsigned int color);
|
||||
void draw_rect_impl(Renderer *renderer, RenderObject *obj);
|
||||
void draw_text_impl(Renderer *renderer, RenderText *text);
|
||||
void draw_objects_impl(Renderer *renderer, RenderObject *objs[], unsigned int count);
|
||||
|
||||
#endif // RENDERER_H
|
||||
Reference in New Issue
Block a user