598 lines
12 KiB
C
598 lines
12 KiB
C
/**
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* @file GC9A01.c
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*
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**/
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/*********************
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* INCLUDES
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*********************/
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#include "GC9A01.h"
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#if USE_GC9A01
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#include <stdbool.h>
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#include <stddef.h>
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#include <string.h>
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#include LV_DRV_DISP_INCLUDE
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#include LV_DRV_DELAY_INCLUDE
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/*********************
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* DEFINES
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*********************/
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#ifndef GC9A01_XSTART
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#define GC9A01_XSTART 0
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#endif
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#ifndef GC9A01_YSTART
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#define GC9A01_YSTART 0
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#endif
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#define GC9A01_CMD_MODE 0
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#define GC9A01_DATA_MODE 1
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#define GC9A01_HOR_RES 240
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#define GC9A01_VER_RES 240
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/* GC9A01 Commands that we know of. Limited documentation */
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#define GC9A01_INVOFF 0x20
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#define GC9A01_INVON 0x21
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#define GC9A01_DISPON 0x29
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#define GC9A01_CASET 0x2A
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#define GC9A01_RASET 0x2B
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#define GC9A01_RAMWR 0x2C
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#define GC9A01_COLMOD 0x3A
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#define GC9A01_MADCTL 0x36
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#define GC9A01_MADCTL_MY 0x80
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#define GC9A01_MADCTL_MX 0x40
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#define GC9A01_MADCTL_MV 0x20
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#define GC9A01_MADCTL_RGB 0x00
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#define GC9A01_DISFNCTRL 0xB6
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/**********************
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* TYPEDEFS
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**********************/
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/* Init script function */
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struct GC9A01_function {
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uint16_t cmd;
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uint16_t data;
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};
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/* Init script commands */
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enum GC9A01_cmd {
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GC9A01_START,
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GC9A01_END,
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GC9A01_CMD,
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GC9A01_DATA,
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GC9A01_DELAY
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};
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/**********************
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* STATIC PROTOTYPES
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**********************/
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static void GC9A01_command(uint8_t cmd);
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static void GC9A01_data(uint8_t data);
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static void GC9A01_set_addr_win(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1);
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/**********************
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* STATIC VARIABLES
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**********************/
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// Documentation on op codes for GC9A01 are very hard to find.
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// Will document should they be found.
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static struct GC9A01_function GC9A01_cfg_script[] = {
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{ GC9A01_START, GC9A01_START},
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{ GC9A01_CMD, 0xEF},
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{ GC9A01_CMD, 0xEB},
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{ GC9A01_DATA, 0x14},
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{ GC9A01_CMD, 0xFE}, // Inter Register Enable1
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{ GC9A01_CMD, 0xEF}, // Inter Register Enable2
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{ GC9A01_CMD, 0xEB},
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{ GC9A01_DATA, 0x14},
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{ GC9A01_CMD, 0x84},
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{ GC9A01_DATA, 0x40},
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{ GC9A01_CMD, 0x85},
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{ GC9A01_DATA, 0xFF},
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{ GC9A01_CMD, 0x86},
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{ GC9A01_DATA, 0xFF},
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{ GC9A01_CMD, 0x87},
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{ GC9A01_DATA, 0xFF},
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{ GC9A01_CMD, 0x88},
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{ GC9A01_DATA, 0x0A},
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{ GC9A01_CMD, 0x89},
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{ GC9A01_DATA, 0x21},
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{ GC9A01_CMD, 0x8A},
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{ GC9A01_DATA, 0x00},
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{ GC9A01_CMD, 0x8B},
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{ GC9A01_DATA, 0x80},
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{ GC9A01_CMD, 0x8C},
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{ GC9A01_DATA, 0x01},
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{ GC9A01_CMD, 0x8D},
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{ GC9A01_DATA, 0x01},
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{ GC9A01_CMD, 0x8E},
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{ GC9A01_DATA, 0xFF},
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{ GC9A01_CMD, 0x8F},
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{ GC9A01_DATA, 0xFF},
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{ GC9A01_CMD, GC9A01_DISFNCTRL}, // Display Function Control
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{ GC9A01_DATA, 0x00},
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{ GC9A01_DATA, 0x00},
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{ GC9A01_CMD, GC9A01_MADCTL}, // Memory Access Control
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{ GC9A01_DATA, 0x48}, // Set the display direction 0,1,2,3 four directions
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{ GC9A01_CMD, GC9A01_COLMOD}, // COLMOD: Pixel Format Set
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{ GC9A01_DATA, 0x05}, // 16 Bits per pixel
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{ GC9A01_CMD, 0x90},
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{ GC9A01_DATA, 0x08},
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{ GC9A01_DATA, 0x08},
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{ GC9A01_DATA, 0x08},
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{ GC9A01_DATA, 0x08},
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{ GC9A01_CMD, 0xBD},
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{ GC9A01_DATA, 0x06},
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{ GC9A01_CMD, 0xBC},
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{ GC9A01_DATA, 0x00},
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{ GC9A01_CMD, 0xFF},
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{ GC9A01_DATA, 0x60},
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{ GC9A01_DATA, 0x01},
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{ GC9A01_DATA, 0x04},
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{ GC9A01_CMD, 0xC3}, // Power Control 2
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{ GC9A01_DATA, 0x13},
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{ GC9A01_CMD, 0xC4}, // Power Control 3
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{ GC9A01_DATA, 0x13},
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{ GC9A01_CMD, 0xC9}, // Power Control 4
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{ GC9A01_DATA, 0x22},
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{ GC9A01_CMD, 0xBE},
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{ GC9A01_DATA, 0x11},
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{ GC9A01_CMD, 0xE1},
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{ GC9A01_DATA, 0x10},
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{ GC9A01_DATA, 0x0E},
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{ GC9A01_CMD, 0xDF},
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{ GC9A01_DATA, 0x21},
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{ GC9A01_DATA, 0x0C},
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{ GC9A01_DATA, 0x02},
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{ GC9A01_CMD, 0xF0}, // SET_GAMMA1
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{ GC9A01_DATA, 0x45},
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{ GC9A01_DATA, 0x09},
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{ GC9A01_DATA, 0x08},
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{ GC9A01_DATA, 0x08},
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{ GC9A01_DATA, 0x26},
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{ GC9A01_DATA, 0x2A},
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{ GC9A01_CMD, 0xF1}, // SET_GAMMA2
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{ GC9A01_DATA, 0x43},
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{ GC9A01_DATA, 0x70},
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{ GC9A01_DATA, 0x72},
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{ GC9A01_DATA, 0x36},
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{ GC9A01_DATA, 0x37},
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{ GC9A01_DATA, 0x6F},
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{ GC9A01_CMD, 0xF2}, // SET_GAMMA3
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{ GC9A01_DATA, 0x45},
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{ GC9A01_DATA, 0x09},
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{ GC9A01_DATA, 0x08},
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{ GC9A01_DATA, 0x08},
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{ GC9A01_DATA, 0x26},
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{ GC9A01_DATA, 0x2A},
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{ GC9A01_CMD, 0xF3}, // SET_GAMMA4
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{ GC9A01_DATA, 0x43},
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{ GC9A01_DATA, 0x70},
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{ GC9A01_DATA, 0x72},
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{ GC9A01_DATA, 0x36},
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{ GC9A01_DATA, 0x37},
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{ GC9A01_DATA, 0x6F},
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{ GC9A01_CMD, 0xED},
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{ GC9A01_DATA, 0x1B},
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{ GC9A01_DATA, 0x0B},
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{ GC9A01_CMD, 0xAE},
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{ GC9A01_DATA, 0x77},
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{ GC9A01_CMD, 0xCD},
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{ GC9A01_DATA, 0x63},
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{ GC9A01_CMD, 0x70},
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{ GC9A01_DATA, 0x07},
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{ GC9A01_DATA, 0x07},
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{ GC9A01_DATA, 0x04},
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{ GC9A01_DATA, 0x0E},
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{ GC9A01_DATA, 0x0F},
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{ GC9A01_DATA, 0x09},
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{ GC9A01_DATA, 0x07},
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{ GC9A01_DATA, 0x08},
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{ GC9A01_DATA, 0x03},
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{ GC9A01_CMD, 0xE8},
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{ GC9A01_DATA, 0x34},
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{ GC9A01_CMD, 0x62},
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{ GC9A01_DATA, 0x18},
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{ GC9A01_DATA, 0x0D},
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{ GC9A01_DATA, 0x71},
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{ GC9A01_DATA, 0xED},
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{ GC9A01_DATA, 0x70},
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{ GC9A01_DATA, 0x70},
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{ GC9A01_DATA, 0x18},
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{ GC9A01_DATA, 0x0F},
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{ GC9A01_DATA, 0x71},
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{ GC9A01_DATA, 0xEF},
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{ GC9A01_DATA, 0x70},
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{ GC9A01_DATA, 0x70},
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{ GC9A01_CMD, 0x63},
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{ GC9A01_DATA, 0x18},
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{ GC9A01_DATA, 0x11},
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{ GC9A01_DATA, 0x71},
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{ GC9A01_DATA, 0xF1},
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{ GC9A01_DATA, 0x70},
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{ GC9A01_DATA, 0x70},
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{ GC9A01_DATA, 0x18},
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{ GC9A01_DATA, 0x13},
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{ GC9A01_DATA, 0x71},
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{ GC9A01_DATA, 0xF3},
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{ GC9A01_DATA, 0x70},
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{ GC9A01_DATA, 0x70},
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{ GC9A01_CMD, 0x64},
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{ GC9A01_DATA, 0x28},
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{ GC9A01_DATA, 0x29},
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{ GC9A01_DATA, 0xF1},
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{ GC9A01_DATA, 0x01},
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{ GC9A01_DATA, 0xF1},
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{ GC9A01_DATA, 0x00},
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{ GC9A01_DATA, 0x07},
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{ GC9A01_CMD, 0x66},
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{ GC9A01_DATA, 0x3C},
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{ GC9A01_DATA, 0x00},
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{ GC9A01_DATA, 0xCD},
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{ GC9A01_DATA, 0x67},
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{ GC9A01_DATA, 0x45},
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{ GC9A01_DATA, 0x45},
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{ GC9A01_DATA, 0x10},
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{ GC9A01_DATA, 0x00},
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{ GC9A01_DATA, 0x00},
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{ GC9A01_DATA, 0x00},
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{ GC9A01_CMD, 0x67},
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{ GC9A01_DATA, 0x00},
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{ GC9A01_DATA, 0x3C},
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{ GC9A01_DATA, 0x00},
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{ GC9A01_DATA, 0x00},
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{ GC9A01_DATA, 0x00},
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{ GC9A01_DATA, 0x01},
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{ GC9A01_DATA, 0x54},
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{ GC9A01_DATA, 0x10},
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{ GC9A01_DATA, 0x32},
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{ GC9A01_DATA, 0x98},
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{ GC9A01_CMD, 0x74},
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{ GC9A01_DATA, 0x10},
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{ GC9A01_DATA, 0x85},
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{ GC9A01_DATA, 0x80},
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{ GC9A01_DATA, 0x00},
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{ GC9A01_DATA, 0x00},
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{ GC9A01_DATA, 0x4E},
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{ GC9A01_DATA, 0x00},
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{ GC9A01_CMD, 0x98},
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{ GC9A01_DATA, 0x3E},
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{ GC9A01_DATA, 0x07},
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{ GC9A01_CMD, 0x35}, // Tearing Effect Line ON
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{ GC9A01_CMD, 0x21}, // Display Inversion ON
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{ GC9A01_CMD, 0x11}, // Sleep Out Mode
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{ GC9A01_DELAY, 120},
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{ GC9A01_CMD, GC9A01_DISPON}, // Display ON
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{ GC9A01_DELAY, 255},
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{ GC9A01_END, GC9A01_END},
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};
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/**********************
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* MACROS
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**********************/
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/**********************
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* GLOBAL FUNCTIONS
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**********************/
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/**
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* Write a command to the GC9A01
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* @param cmd the command
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*/
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static void GC9A01_command(uint8_t cmd)
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{
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LV_DRV_DISP_CMD_DATA(GC9A01_CMD_MODE);
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LV_DRV_DISP_SPI_WR_BYTE(cmd);
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}
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/**
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* Write data to the GC9A01
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* @param data the data
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*/
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static void GC9A01_data(uint8_t data)
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{
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LV_DRV_DISP_CMD_DATA(GC9A01_DATA_MODE);
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LV_DRV_DISP_SPI_WR_BYTE(data);
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}
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static int GC9A01_data_array(uint8_t *buf, uint32_t len)
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{
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uint8_t *pt = buf;
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for (uint32_t lp = 0; lp < len; lp++, pt++)
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{
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LV_DRV_DISP_SPI_WR_BYTE(*pt);
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}
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return 0;
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}
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static int GC9A01_databuf(uint32_t len, uint8_t *buf)
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{
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uint32_t byte_left = len;
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uint8_t *pt = buf;
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while (byte_left)
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{
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if (byte_left > 64)
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{
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LV_DRV_DISP_SPI_WR_ARRAY((char*)pt, 64);
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byte_left = byte_left - 64;
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pt = pt + 64;
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}
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else
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{
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LV_DRV_DISP_SPI_WR_ARRAY((char*)pt, byte_left);
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byte_left=0;
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}
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}
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return 0;
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}
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// hard reset of the tft controller
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// ----------------------------------------------------------
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static void GC9A01_hard_reset( void )
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{
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LV_DRV_DISP_SPI_CS(0); // Low to listen to us
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LV_DRV_DISP_RST(1);
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LV_DRV_DELAY_MS(50);
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LV_DRV_DISP_RST(0);
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LV_DRV_DELAY_MS(50);
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LV_DRV_DISP_RST(1);
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LV_DRV_DELAY_MS(50);
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}
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// Configuration of the tft controller
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// ----------------------------------------------------------
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static void GC9A01_run_cfg_script(void)
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{
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int i = 0;
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int end_script = 0;
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do {
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switch (GC9A01_cfg_script[i].cmd)
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{
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case GC9A01_START:
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break;
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case GC9A01_CMD:
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GC9A01_command( GC9A01_cfg_script[i].data & 0xFF );
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break;
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case GC9A01_DATA:
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GC9A01_data( GC9A01_cfg_script[i].data & 0xFF );
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break;
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case GC9A01_DELAY:
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LV_DRV_DELAY_MS(GC9A01_cfg_script[i].data);
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break;
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case GC9A01_END:
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end_script = 1;
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}
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i++;
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} while (!end_script);
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}
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void GC9A01_drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color) {
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// Rudimentary clipping
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if((x >= GC9A01_HOR_RES) || (y >= GC9A01_VER_RES)) return;
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if((y+h-1) >= GC9A01_VER_RES) h = GC9A01_VER_RES - y;
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LV_DRV_DISP_SPI_CS(0); // Listen to us
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GC9A01_set_addr_win(x, y, x, y + h - 1);
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uint8_t hi = color >> 8, lo = color;
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while (h--) {
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GC9A01_data(hi);
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GC9A01_data(lo);
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}
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LV_DRV_DISP_SPI_CS(1);
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}
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void GC9A01_drawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color) {
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// Rudimentary clipping
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if((x >= GC9A01_HOR_RES) || (y >= GC9A01_VER_RES)) return;
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if((x+w-1) >= GC9A01_HOR_RES) w = GC9A01_HOR_RES - x;
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LV_DRV_DISP_SPI_CS(0); // Listen to us
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GC9A01_set_addr_win(x, y, x + w - 1, y);
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uint8_t hi = color >> 8, lo = color;
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while (w--) {
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GC9A01_data(hi);
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GC9A01_data(lo);
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}
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LV_DRV_DISP_SPI_CS(1);
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}
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// Pass 8-bit (each) R,G,B, get back 16-bit packed color
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uint16_t GC9A01_Color565(uint8_t r, uint8_t g, uint8_t b) {
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return ((r & 0xF8) << 8) | ((g & 0xFC) << 3) | (b >> 3);
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}
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void GC9A01_invertDisplay(bool i)
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{
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GC9A01_command(i ? GC9A01_INVON : GC9A01_INVOFF);
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}
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void GC9A01_drawPixel(int16_t x, int16_t y, uint16_t color)
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{
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if((x < 0) ||(x >= GC9A01_HOR_RES) || (y < 0) || (y >= GC9A01_VER_RES)) return;
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LV_DRV_DISP_SPI_CS(0); // Listen to us
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GC9A01_set_addr_win(x, y, x, y);
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uint8_t hi = color >> 8, lo = color;
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GC9A01_data(hi);
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GC9A01_data(lo);
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LV_DRV_DISP_SPI_CS(1);
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}
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void GC9A01_fillScreen(uint16_t color) {
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GC9A01_fillRect(0, 0, GC9A01_HOR_RES, GC9A01_VER_RES, color);
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}
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// fill a rectangle
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void GC9A01_fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color) {
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// rudimentary clipping (drawChar w/big text requires this)
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if((x >= GC9A01_HOR_RES) || (y >= GC9A01_VER_RES)) return;
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if((x + w - 1) >= GC9A01_HOR_RES) w = GC9A01_HOR_RES - x;
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if((y + h - 1) >= GC9A01_VER_RES) h = GC9A01_VER_RES - y;
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|
|
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LV_DRV_DISP_SPI_CS(0); // Listen to us
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|
|
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GC9A01_set_addr_win(x, y, x + w - 1, y + h - 1);
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|
|
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uint8_t hi = color >> 8, lo = color;
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|
|
|
for (y = h; y > 0; y--)
|
|
{
|
|
for (x = w; x > 0; x--)
|
|
{
|
|
GC9A01_data(hi);
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|
GC9A01_data(lo);
|
|
}
|
|
}
|
|
LV_DRV_DISP_SPI_CS(1);
|
|
}
|
|
|
|
void GC9A01_setRotation(uint8_t m) {
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|
|
|
GC9A01_command(GC9A01_MADCTL);
|
|
m %= 4; // can't be higher than 3
|
|
switch (m) {
|
|
case 0:
|
|
GC9A01_data(GC9A01_MADCTL_MX | GC9A01_MADCTL_MY | GC9A01_MADCTL_RGB);
|
|
|
|
// _xstart = _colstart;
|
|
// _ystart = _rowstart;
|
|
break;
|
|
case 1:
|
|
GC9A01_data(GC9A01_MADCTL_MY | GC9A01_MADCTL_MV | GC9A01_MADCTL_RGB);
|
|
|
|
// _ystart = _colstart;
|
|
// _xstart = _rowstart;
|
|
break;
|
|
case 2:
|
|
GC9A01_data(GC9A01_MADCTL_RGB);
|
|
|
|
// _xstart = _colstart;
|
|
// _ystart = _rowstart;
|
|
break;
|
|
|
|
case 3:
|
|
GC9A01_data(GC9A01_MADCTL_MX | GC9A01_MADCTL_MV | GC9A01_MADCTL_RGB);
|
|
|
|
// _ystart = _colstart;
|
|
// _xstart = _rowstart;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Initialize the GC9A01
|
|
*/
|
|
int GC9A01_init(void)
|
|
{
|
|
GC9A01_hard_reset();
|
|
GC9A01_run_cfg_script();
|
|
|
|
// GC9A01_fillScreen(0x0000); // Black
|
|
// GC9A01_fillScreen(0xFFFF); // White
|
|
GC9A01_fillScreen(0xAAAA); // ?
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void GC9A01_set_addr_win(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1)
|
|
{
|
|
uint16_t x_start = x0 + GC9A01_XSTART, x_end = x1 + GC9A01_XSTART;
|
|
uint16_t y_start = y0 + GC9A01_YSTART, y_end = y1 + GC9A01_YSTART;
|
|
|
|
GC9A01_command(GC9A01_CASET); // Column addr set
|
|
GC9A01_data(x_start >> 8);
|
|
GC9A01_data(x_start & 0xFF); // XSTART
|
|
GC9A01_data(x_end >> 8);
|
|
GC9A01_data(x_end & 0xFF); // XEND
|
|
|
|
GC9A01_command(GC9A01_RASET); // Row addr set
|
|
GC9A01_data(y_start >> 8);
|
|
GC9A01_data(y_start & 0xFF); // YSTART
|
|
GC9A01_data(y_end >> 8);
|
|
GC9A01_data(y_end & 0xFF); // YEND
|
|
|
|
GC9A01_command(GC9A01_RAMWR);
|
|
}
|
|
|
|
void GC9A01_flush(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t *color_p)
|
|
{
|
|
LV_DRV_DISP_SPI_CS(0); // Listen to us
|
|
|
|
GC9A01_set_addr_win(area->x1, area->y1, area->x2, area->y2);
|
|
int32_t len = (area->x2 - area->x1 + 1) * (area->y2 - area->y1 + 1) * 2;
|
|
|
|
LV_DRV_DISP_CMD_DATA(GC9A01_DATA_MODE);
|
|
LV_DRV_DISP_SPI_WR_ARRAY((char*)color_p, len);
|
|
|
|
LV_DRV_DISP_SPI_CS(1);
|
|
lv_disp_flush_ready(disp_drv); /* Indicate you are ready with the flushing*/
|
|
}
|
|
|
|
#endif
|
|
|