1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/stage2/example.c Sat Apr 23 18:19:38 2016 +0200
1.3 @@ -0,0 +1,57 @@
1.4 +/*
1.5 + * Example tasks.
1.6 + *
1.7 + * Copyright (C) 2015, 2016 Paul Boddie <paul@boddie.org.uk>
1.8 + *
1.9 + * This program is free software: you can redistribute it and/or modify
1.10 + * it under the terms of the GNU General Public License as published by
1.11 + * the Free Software Foundation, either version 3 of the License, or
1.12 + * (at your option) any later version.
1.13 + *
1.14 + * This program is distributed in the hope that it will be useful,
1.15 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.16 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.17 + * GNU General Public License for more details.
1.18 + *
1.19 + * You should have received a copy of the GNU General Public License
1.20 + * along with this program. If not, see <http://www.gnu.org/licenses/>.
1.21 + */
1.22 +
1.23 +#include "board.h"
1.24 +#include "lcd.h"
1.25 +#include "jzlcd.h"
1.26 +#include "tasks.h"
1.27 +
1.28 +extern vidinfo_t panel_info;
1.29 +
1.30 +void next_pixel(unsigned short *x, unsigned short *y)
1.31 +{
1.32 + (*x)++;
1.33 + if (*x >= panel_info.vl_col) {
1.34 + *x = 0;
1.35 + (*y)++;
1.36 + if (*y >= panel_info.vl_row)
1.37 + *y = 0;
1.38 + }
1.39 +}
1.40 +
1.41 +/* Tasks. */
1.42 +
1.43 +void plot_pattern(unsigned short pixel_type, unsigned short x, unsigned short y)
1.44 +{
1.45 + while (1) {
1.46 + if (pixel_type)
1.47 + test_pixel(x, y, pixel_type);
1.48 + else
1.49 + clear_pixel(x, y);
1.50 + next_pixel(&x, &y);
1.51 + udelay(100);
1.52 + }
1.53 +}
1.54 +
1.55 +void start_plot_pattern(unsigned short task)
1.56 +{
1.57 + u32 args[] = {task, 0, (task - 1) * 60};
1.58 +
1.59 + start_task(task, (void (*)()) plot_pattern, args, 3);
1.60 +}