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console.c
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/* Author, Copyright: Oleg Borodin <[email protected]> 2018 */
#include <stdint.h>
#include <stdbool.h>
#include <stdlib.h>
#include <st7735.h>
#include <console.h>
#include <font8x14.h>
font_t basefont = {
.width = 8,
.height = 14,
.start = 32,
.length = 0x5F,
.bitmap = basefont_bitmap
};
console_t console = {
.width = CONSOLE_WIDTH,
.height = CONSOLE_HEIGHT,
.line = 0,
.row = 0,
.xmax = 127,
.ymax = 127,
.xshift = 0,
.yshift = 0,
.font = &basefont,
.buffer_len = CONSOLE_WIDTH * CONSOLE_HEIGHT + 1
};
void _console_setup(console_t *console, uint16_t xmax, uint16_t ymax, font_t *font) {
console->xmax = xmax;
console->ymax = ymax;
console->font = font;
console->width = ymax/font->width;
console->height = ymax/font->height;
console->buffer_len = console->width * console->height + 1;
console->buffer = malloc(console->buffer_len);
}
void console_setup(void) {
_console_setup(&console, LCD_TFTWIDTH, LCD_TFTHEIGHT, &basefont);
}
void console_render_char(console_t *console, uint8_t line, uint8_t row) {
uint8_t c = console->buffer[(console->width * line) + row];
lcd_draw_char(
(console->xmax - (console->font->height * (line + 1))) + console->yshift,
(console->font->width * row) + console->xshift,
console->font, c);
}
void console_render(console_t *console) {
#if 0
for (uint8_t line = console->height; line > 0; --line) {
for (uint8_t row = console->width; row > 0; --row) {
console_render_char(console, line - 1, row - 1);
}
}
#endif
for (uint8_t line = 0; line < console->height; line++) {
for (uint8_t row = 0; row < console->width; row++) {
console_render_char(console, line, row);
}
}
}
void console_shift(console_t *console) {
uint16_t i = 0;
uint16_t pos = console->width * (console->line - 1) + console->row;
uint16_t end = console->width * console->height;
while (i < (end - console->width)) {
console->buffer[i] = console->buffer[i + console->width];
i++;
}
while (i < end) {
console->buffer[i] = ' ';
i++;
}
if (console->line > 0)
console->line--;
else
console->line = 0;
}
void console_putc(console_t *console, uint8_t c) {
if ((console->row + 1) > console->width) {
console->line++;
console->row = 0;
}
if (console->line >= console->height) {
console_shift(console);
console_render(console);
}
console->buffer[(console->line * console->width) + console->row] = c;
console_render_char(console, console->line, console->row);
console->row++;
}
int console_puts(console_t *console, uint8_t *str) {
uint8_t i = 0;
while (str[i] != 0) {
console_putc(console, str[i]);
i++;
}
return i;
}
void console_render_xychar(console_t *console, uint8_t line, uint8_t row, uint8_t c) {
lcd_draw_char(
(console->xmax - (console->font->height * (line + 1))) + console->yshift,
(console->font->width * row) + console->xshift,
console->font, c);
}
void console_xyputc(console_t *console, uint16_t line, uint16_t row, uint8_t c) {
if (row < console->width && line < console->height) {
console_render_xychar(console, line, row, c);
}
}
int console_xyputs(console_t *console, uint16_t line, uint16_t row, uint8_t *str) {
uint8_t i = 0;
while (str[i] != 0 && row < console->width && line < console->height) {
console_render_xychar(console, line, row, str[i]);
i++;
row++;
}
return i;
}
/* EOF */