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Diffstat (limited to 'drivers/gdisp/RA8875/gdisp_lld_panel_example.h')
| -rw-r--r-- | drivers/gdisp/RA8875/gdisp_lld_panel_example.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/drivers/gdisp/RA8875/gdisp_lld_panel_example.h b/drivers/gdisp/RA8875/gdisp_lld_panel_example.h new file mode 100644 index 00000000..b6c4e4c8 --- /dev/null +++ b/drivers/gdisp/RA8875/gdisp_lld_panel_example.h @@ -0,0 +1,74 @@ +/* + * This file is subject to the terms of the GFX License, v1.0. If a copy of + * the license was not distributed with this file, you can obtain one at: + * + * http://chibios-gfx.com/license.html + */ + +/** + * @file drivers/gdisp/SSD1963/gdisp_lld_panel_example.h + * @brief TFT LCD panel properties. + * + * @addtogroup GDISP + * @{ + */ + +#ifndef _GDISP_LLD_PANEL_H +#define _GDISP_LLD_PANEL_H + +/* LCD panel specs */ + +/* The timings need to follow the datasheet for your particular TFT/LCD screen (the actual screen, not the controller) +*** Datasheets normally use a specific set of timings and acronyms, their value refers to the number of pixel clocks +** Non-display periods refer to pulses/timings that occur before or after the timings that actually put pixels on the screen +** Display periods refer to pulses/timings that directly put pixels on the screen +HDP: Horizontal Display Period, normally the width - 1 +HT: Horizontal Total period (display + non-display) +HPS: non-display period between the start of the horizontal sync (LLINE) signal and the first display data +LPS: horizontal sync pulse (LLINE) start location in pixel clocks +HPW: Horizontal sync Pulse Width +VDP: Vertical Display period, normally height - 1 +VT: Vertical Total period (display + non-display) +VPS: non-display period in lines between the start of the frame and the first display data in number of lines +FPS: vertical sync pulse (LFRAME) start location in lines. +VPW: Vertical sync Pulse Width + +*** Here's how to convert them: +HPS = SCREEN_HSYNC_PULSE + SCREEN_HSYNC_BACK_PORCH +HT - HPS = GDISP_SCREEN_WIDTH + SCREEN_HSYNC_FRONT_PORCH +=> SCREEN_HSYNC_FRONT_PORCH = ( HT - HPS ) - GDISP_SCREEN_WIDTH + SCREEN_HSYNC_PULSE = HPW + SCREEN_HSYNC_BACK_PORCH = HPS - HPW + SCREEN_HSYNC_PERIOD = HT + +VPS = SCREEN_VSYNC_PULSE + SCREEN_VSYNC_BACK_PORCH +VT - VPS = GDISP_SCREEN_HEIGHT + SCREEN_VSYNC_FRONT_PORCH +=> SCREEN_VSYNC_FRONT_PORCH = ( VT - VPS ) - GDISP_SCREEN_HEIGHT + SCREEN_VSYNC_PULSE = VPW + SCREEN_VSYNC_BACK_PORCH = VPS - LPS + SCREEN_VSYNC_PERIOD = VT +*/ + +#define SCREEN_FPS 60ULL + +//The following values are for a 4.3" TFT LCD + +#define GDISP_SCREEN_WIDTH 480 +#define GDISP_SCREEN_HEIGHT 272 + +#define SCREEN_HSYNC_BACK_PORCH 2 +#define SCREEN_HSYNC_FRONT_PORCH 2 +#define SCREEN_HSYNC_PULSE 41 + +#define SCREEN_VSYNC_BACK_PORCH 2 +#define SCREEN_VSYNC_FRONT_PORCH 2 +#define SCREEN_VSYNC_PULSE 10 + +#define SCREEN_HSYNC_PERIOD (SCREEN_HSYNC_PULSE + SCREEN_HSYNC_BACK_PORCH + GDISP_SCREEN_WIDTH + SCREEN_HSYNC_FRONT_PORCH) +#define SCREEN_VSYNC_PERIOD (SCREEN_VSYNC_PULSE + SCREEN_VSYNC_BACK_PORCH + GDISP_SCREEN_HEIGHT + SCREEN_VSYNC_FRONT_PORCH) + +#define SCREEN_PCLK (SCREEN_HSYNC_PERIOD * SCREEN_VSYNC_PERIOD * SCREEN_FPS) +#define GDISP_FPR ((SCREEN_PCLK * 1048576)/100000000) + +#endif +/** @} */ |