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trezor-firmware/core/embed/lib/terminal.c
2024-01-26 11:30:40 +01:00

132 lines
3.3 KiB
C

/*
* This file is part of the Trezor project, https://trezor.io/
*
* Copyright (c) SatoshiLabs
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "terminal.h"
#include <stdarg.h>
#include <stdint.h>
#include <string.h>
#include "display.h"
#include TREZOR_BOARD
#ifndef TREZOR_PRINT_DISABLE
#define TERMINAL_COLS (DISPLAY_RESX / 6)
#define TERMINAL_ROWS (DISPLAY_RESY / 8)
static char terminal_fb[TERMINAL_ROWS][TERMINAL_COLS];
static uint16_t terminal_fgcolor = COLOR_WHITE;
static uint16_t terminal_bgcolor = COLOR_BLACK;
// set colors for display_print function
void term_set_color(uint16_t fgcolor, uint16_t bgcolor) {
terminal_fgcolor = fgcolor;
terminal_bgcolor = bgcolor;
}
// display text using bitmap font
void term_print(const char *text, int textlen) {
static uint8_t row = 0, col = 0;
// determine text length if not provided
if (textlen < 0) {
textlen = strlen(text);
}
// print characters to internal buffer (terminal_fb)
for (int i = 0; i < textlen; i++) {
switch (text[i]) {
case '\r':
break;
case '\n':
row++;
col = 0;
break;
default:
terminal_fb[row][col] = text[i];
col++;
break;
}
if (col >= TERMINAL_COLS) {
col = 0;
row++;
}
if (row >= TERMINAL_ROWS) {
for (int j = 0; j < TERMINAL_ROWS - 1; j++) {
memcpy(terminal_fb[j], terminal_fb[j + 1], TERMINAL_COLS);
}
memset(terminal_fb[TERMINAL_ROWS - 1], 0, TERMINAL_COLS);
row = TERMINAL_ROWS - 1;
}
}
// render buffer to display
display_set_window(0, 0, DISPLAY_RESX - 1, DISPLAY_RESY - 1);
for (int i = 0; i < DISPLAY_RESX * DISPLAY_RESY; i++) {
int x = (i % DISPLAY_RESX);
int y = (i / DISPLAY_RESX);
const int j = y % 8;
y /= 8;
const int k = x % 6;
x /= 6;
char c = 0;
if (x < TERMINAL_COLS && y < TERMINAL_ROWS) {
c = terminal_fb[y][x] & 0x7F;
// char invert = terminal_fb[y][x] & 0x80;
} else {
c = ' ';
}
if (c < ' ') {
c = ' ';
}
const uint8_t *g = Font_Bitmap + (5 * (c - ' '));
if (k < 5 && (g[k] & (1 << j))) {
PIXELDATA(terminal_fgcolor);
} else {
PIXELDATA(terminal_bgcolor);
}
}
display_pixeldata_dirty();
display_refresh();
}
#ifdef TREZOR_EMULATOR
#define mini_vsnprintf vsnprintf
#include <stdio.h>
#else
#include "mini_printf.h"
#endif
// variadic term_print
void term_printf(const char *fmt, ...) {
if (!strchr(fmt, '%')) {
term_print(fmt, strlen(fmt));
} else {
va_list va;
va_start(va, fmt);
char buf[256] = {0};
int len = mini_vsnprintf(buf, sizeof(buf), fmt, va);
term_print(buf, len);
va_end(va);
}
}
#endif // TREZOR_PRINT_DISABLE