1 /**
2 * @file lv_st7796.c
3 *
4 */
5
6 /*********************
7 * INCLUDES
8 *********************/
9 #include "lv_st7796.h"
10
11 #if LV_USE_ST7796
12
13 /*********************
14 * DEFINES
15 *********************/
16
17 #define CMD_FRMCTR1 0xB1
18 #define CMD_FRMCTR2 0xB2
19 #define CMD_FRMCTR3 0xB3
20 #define CMD_INVCTR 0xB4
21 #define CMD_DFUNCTR 0xB6
22 #define CMD_ETMOD 0xB7
23 #define CMD_PWCTR1 0xC0
24 #define CMD_PWCTR2 0xC1
25 #define CMD_PWCTR3 0xC2
26 #define CMD_PWCTR4 0xC3
27 #define CMD_PWCTR5 0xC4
28 #define CMD_VMCTR 0xC5
29 #define CMD_GMCTRP1 0xE0
30 #define CMD_GMCTRN1 0xE1
31 #define CMD_DOCA 0xE8
32 #define CMD_CSCON 0xF0
33
34 /**********************
35 * TYPEDEFS
36 **********************/
37
38 /**********************
39 * STATIC PROTOTYPES
40 **********************/
41
42 /**********************
43 * STATIC CONSTANTS
44 **********************/
45
46 /* init commands based on LovyanGFX */
47 static const uint8_t init_cmd_list[] = {
48 CMD_CSCON, 1, 0xC3, /* Enable extension command 2 partI */
49 CMD_CSCON, 1, 0x96, /* Enable extension command 2 partII */
50 CMD_INVCTR, 1, 0x01, /* 1-dot inversion */
51 CMD_DFUNCTR, 3, 0x80, /* Display Function Control: Bypass */
52 0x22, /* Source Output Scan from S1 to S960, Gate Output scan from G1 to G480, scan cycle = 2 */
53 0x3B, /* LCD Drive Line = 8 * (59 + 1) */
54 CMD_DOCA, 8, 0x40, 0x8A, 0x00, 0x00,
55 0x29, /* Source equalizing period time = 22.5 us */
56 0x19, /* Timing for "Gate start" = 25 (Tclk) */
57 0xA5, /* Timing for "Gate End" = 37 (Tclk), Gate driver EQ function ON */
58 0x33,
59 CMD_PWCTR2, 1, 0x06, /* Power control2: VAP(GVDD) = 3.85 + (vcom + vcom offset), VAN(GVCL) = -3.85 + (vcom + vcom offset) */
60 CMD_PWCTR3, 1, 0xA7, /* Power control 3: Source driving current level = low, Gamma driving current level = High */
61 CMD_VMCTR, 1, 0x18, /* VCOM Control: VCOM = 0.9 */
62 LV_LCD_CMD_DELAY_MS, 12, /* delay 120 ms */
63 CMD_GMCTRP1, 14, /* Gamma */
64 0xF0, 0x09, 0x0B, 0x06, 0x04, 0x15, 0x2F,
65 0x54, 0x42, 0x3C, 0x17, 0x14, 0x18, 0x1B,
66 CMD_GMCTRN1, 14,
67 0xE0, 0x09, 0x0B, 0x06, 0x04, 0x03, 0x2B,
68 0x43, 0x42, 0x3B, 0x16, 0x14, 0x17, 0x1B,
69 LV_LCD_CMD_DELAY_MS, 12, /* delay 120 ms */
70 CMD_CSCON, 1, 0x3C, /* Disable extension command 2 partI */
71 CMD_CSCON, 1, 0x69, /* Disable extension command 2 partII */
72 LV_LCD_CMD_DELAY_MS, LV_LCD_CMD_EOF
73 };
74
75 /**********************
76 * STATIC VARIABLES
77 **********************/
78
79 /**********************
80 * MACROS
81 **********************/
82
83 /**********************
84 * GLOBAL FUNCTIONS
85 **********************/
86
lv_st7796_create(uint32_t hor_res,uint32_t ver_res,lv_lcd_flag_t flags,lv_st7796_send_cmd_cb_t send_cmd_cb,lv_st7796_send_color_cb_t send_color_cb)87 lv_display_t * lv_st7796_create(uint32_t hor_res, uint32_t ver_res, lv_lcd_flag_t flags,
88 lv_st7796_send_cmd_cb_t send_cmd_cb, lv_st7796_send_color_cb_t send_color_cb)
89 {
90 lv_display_t * disp = lv_lcd_generic_mipi_create(hor_res, ver_res, flags, send_cmd_cb, send_color_cb);
91 lv_lcd_generic_mipi_send_cmd_list(disp, init_cmd_list);
92 return disp;
93 }
94
lv_st7796_set_gap(lv_display_t * disp,uint16_t x,uint16_t y)95 void lv_st7796_set_gap(lv_display_t * disp, uint16_t x, uint16_t y)
96 {
97 lv_lcd_generic_mipi_set_gap(disp, x, y);
98 }
99
lv_st7796_set_invert(lv_display_t * disp,bool invert)100 void lv_st7796_set_invert(lv_display_t * disp, bool invert)
101 {
102 lv_lcd_generic_mipi_set_invert(disp, invert);
103 }
104
lv_st7796_set_gamma_curve(lv_display_t * disp,uint8_t gamma)105 void lv_st7796_set_gamma_curve(lv_display_t * disp, uint8_t gamma)
106 {
107 /* NOTE: the generic method is not supported on ST7796, TODO: implement gamma tables */
108 LV_UNUSED(disp);
109 LV_UNUSED(gamma);
110 }
111
lv_st7796_send_cmd_list(lv_display_t * disp,const uint8_t * cmd_list)112 void lv_st7796_send_cmd_list(lv_display_t * disp, const uint8_t * cmd_list)
113 {
114 lv_lcd_generic_mipi_send_cmd_list(disp, cmd_list);
115 }
116
117 /**********************
118 * STATIC FUNCTIONS
119 **********************/
120
121 #endif /*LV_USE_ST7796*/
122
