From 6b39d3093c3b87689717bb03988d160473c53c64 Mon Sep 17 00:00:00 2001 From: Keith Packard Date: Sun, 20 Nov 2016 00:04:27 -0800 Subject: altos: Add VGA driver for STM32L processors Generates vsync/hsync using timers and pixel data using the SPI port. 320x240 video using 640x480 mode and a 24MHz "pixel" clock. Signed-off-by: Keith Packard --- src/drivers/ao_vga.h | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 src/drivers/ao_vga.h (limited to 'src/drivers/ao_vga.h') diff --git a/src/drivers/ao_vga.h b/src/drivers/ao_vga.h new file mode 100644 index 00000000..7d9d6b39 --- /dev/null +++ b/src/drivers/ao_vga.h @@ -0,0 +1,39 @@ +/* + * Copyright © 2016 Keith Packard + * + * 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 2 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. + */ + +#ifndef _AO_VGA_H_ +#define _AO_VGA_H_ + +#include "ao_draw.h" + +void +ao_vga_init(void); + +void +ao_vga_enable(int active); + +/* Active frame buffer */ +#define AO_VGA_WIDTH 320 +#define AO_VGA_HEIGHT 240 + +/* Pad on the right so that there are zeros on the output after the line */ +#define AO_VGA_HPAD 32 + +#define AO_VGA_STRIDE ((AO_VGA_WIDTH + AO_VGA_HPAD) >> AO_SHIFT) + +extern uint32_t ao_vga_fb[AO_VGA_STRIDE * AO_VGA_HEIGHT]; + +extern const struct ao_bitmap ao_vga_bitmap; + +#endif /* _AO_VGA_H_ */ -- cgit v1.2.3