Greetings,
I am trying to integrate ugfx for my home project based on STM32F303 and ST7789V based LCD Display.
ST7789V connected by SPI 9 bit. 1 last extra bit for D/C used.
I started the display itself and with raw HAL functions the full fill was working.
Now I am trying to integrate UGFX. IDE is Keil.
Problem is: By calling gfxInit(); no calls to functions like gdisp_lld_init(GDisplay *g) and others. The display is not initializing.
Is it missconfiguration of project/makefiles/include paths or something else?
Looking to examples and documentation I wrote board file:
#ifndef _GDISP_LLD_BOARD_H
#define _GDISP_LLD_BOARD_H
static GFXINLINE void setpin_reset(GDisplay *g, bool_t state);
static GFXINLINE void init_board(GDisplay *g);
static GFXINLINE void write_data(GDisplay *g, uint16_t data);
static GFXINLINE void write_index(GDisplay *g, uint16_t data);
static GFXINLINE void send_data( uint16_t data);
static GFXINLINE void init_board(GDisplay *g) {
// As we are not using multiple displays we set g->board to NULL as we don't use it.
// g->board = 0;
setpin_reset(g, TRUE);
HAL_Delay(30);
write_index(g, 0x011);
HAL_Delay(30);
write_index(g, 0x036);
write_data(g, 0x000);
write_index(g, 0x3A);
write_data(g, 0x06);
write_index(g, 0xB2);
write_data(g, 0x00C);
write_data(g, 0x00C);
write_data(g, 0x000);
write_data(g, 0x033);
write_data(g, 0x033);
write_index(g, 0xBB); //?
write_data(g, 0x1A); //?
write_index(g, 0xC0);
write_data(g, 0x2C);
write_index(g, 0xC2);
write_data(g, 0x01);
write_index(g, 0xC3);
write_data(g, 0x0F);
write_index(g, 0xC4);
write_data(g, 0x20);
write_index(g, 0xC6);
write_data(g, 0x0F);
write_index(g, 0xD0);
write_data(g, 0xA4);
write_data(g, 0xA1);
write_index(g, 0xE0);
write_data(g, 0xD0);
write_data(g, 0x13);
write_data(g, 0x1A);
write_data(g, 0x0A);
write_data(g, 0x0A);
write_data(g, 0x26);
write_data(g, 0x3F);
write_data(g, 0x54);
write_data(g, 0x54);
write_data(g, 0x18);
write_data(g, 0x14);
write_data(g, 0x14);
write_data(g, 0x30);
write_data(g, 0x33);
write_index(g, 0xE1);
write_data(g, 0xD0);
write_data(g, 0x13);
write_data(g, 0x1A);
write_data(g, 0x0A);
write_data(g, 0x0A);
write_data(g, 0x26);
write_data(g, 0x3F);
write_data(g, 0x54);
write_data(g, 0x54);
write_data(g, 0x1A);
write_data(g, 0x16);
write_data(g, 0x16);
write_data(g, 0x32);
write_data(g, 0x35);
write_index(g, 0x29);
HAL_Delay(30);
write_index(g, 0x21);
write_index(g, 0x2A);
write_data(g, 0x00);
write_data(g, 0x00);
write_data(g, 0x00);
write_data(g, 0xEF);
write_index(g, 0x2B);
write_data(g, 0x00);
write_data(g, 0x00);
write_data(g, 0x00);
write_data(g, 0xEF);
}
static GFXINLINE void post_init_board(GDisplay *g) {
(void) g;
}
static GFXINLINE void setpin_reset(GDisplay *g, bool_t state) {
(void) g;
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_14, GPIO_PIN_RESET);
HAL_Delay(120);
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_14, GPIO_PIN_SET);
}
static GFXINLINE void set_backlight(GDisplay *g, uint8_t percent) {
(void) g;
(void) percent;
}
static GFXINLINE void acquire_bus(GDisplay *g) {
(void) g;
}
static GFXINLINE void release_bus(GDisplay *g) {
(void) g;
}
static GFXINLINE void write_index(GDisplay *g, uint16_t index) {
(void) g;
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_RESET);
uint16_t DC;
DC = index;
HAL_SPI_Transmit(&hspi2, (uint8_t *)&DC, 1, 100);
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_SET);
}
static GFXINLINE void send_data( uint16_t data) {
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_RESET);
uint16_t DC; // = 0x0001;
DC = data | 0x100;
HAL_SPI_Transmit(&hspi2, (uint8_t *)&DC, 1, 100);
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_SET);
}
static GFXINLINE void write_data(GDisplay *g, uint16_t data) {
(void) g;
send_data(data);
}
static GFXINLINE void setreadmode(GDisplay *g) {
(void) g;
}
static GFXINLINE void setwritemode(GDisplay *g) {
(void) g;
}
static GFXINLINE uint16_t read_data(GDisplay *g) {
(void) g;
return 0;
}
#endif /* _GDISP_LLD_BOARD_H */
My GDISP LLD file:
#include "gfx.h"
#if GFX_USE_GDISP
#if defined(GDISP_SCREEN_HEIGHT) || defined(GDISP_SCREEN_HEIGHT)
#if GFX_COMPILER_WARNING_TYPE == GFX_COMPILER_WARNING_DIRECT
#warning "GDISP: This low level driver does not support setting a screen size. It is being ignored."
#elif GFX_COMPILER_WARNING_TYPE == GFX_COMPILER_WARNING_MACRO
COMPILER_WARNING("GDISP: This low level driver does not support setting a screen size. It is being ignored.")
#endif
#undef GDISP_SCREEN_WIDTH
#undef GDISP_SCREEN_HEIGHT
#endif
#define GDISP_DRIVER_VMT GDISPVMT_ST7789V
#include "gdisp_lld_config.h"
#include "src/gdisp/gdisp_driver.h"
#ifndef GDISP_SCREEN_HEIGHT
#define GDISP_SCREEN_HEIGHT 240
#endif
#ifndef GDISP_SCREEN_WIDTH
#define GDISP_SCREEN_WIDTH 240
#endif
#ifndef GDISP_INITIAL_CONTRAST
#define GDISP_INITIAL_CONTRAST 50
#endif
#ifndef GDISP_INITIAL_BACKLIGHT
#define GDISP_INITIAL_BACKLIGHT 100
#endif
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
// Some common routines and macros
#define dummy_read(g) { volatile uint16_t dummy; dummy = read_data(g); (void) dummy; }
#define write_reg(g, reg, data) { write_index(g, reg); write_data(g, data); }
#define write_data16(g, data) { write_data(g, data >> 8); write_data(g, (uint8_t)data); }
#define delay(us) gfxSleepMicroseconds(us)
#define delayms(ms) gfxSleepMilliseconds(ms)
static void set_viewport(GDisplay *g) {
write_index(g, 0x2A);
write_data(g, (g->p.x >> 8));
write_data(g, (uint8_t) g->p.x);
write_data(g, (g->p.x + g->p.cx - 1) >> 8);
write_data(g, (uint8_t) (g->p.x + g->p.cx - 1));
write_index(g, 0x2B);
write_data(g, (g->p.y >> 8));
write_data(g, (uint8_t) g->p.y);
write_data(g, (g->p.y + g->p.cy - 1) >> 8);
write_data(g, (uint8_t) (g->p.y + g->p.cy - 1));
}
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
// No private area for this controller
g->priv = 0;
// Initialise the board interface
init_board(g);
// Hardware reset
setpin_reset(g, TRUE);
gfxSleepMilliseconds(20);
setpin_reset(g, FALSE);
gfxSleepMilliseconds(20);
// Get the bus for the following initialisation commands
acquire_bus(g);
// Finish Init
post_init_board(g);
// Release the bus
release_bus(g);
/* Turn on the back-light */
set_backlight(g, GDISP_INITIAL_BACKLIGHT);
/* Initialise the GDISP structure */
g->g.Width = GDISP_SCREEN_WIDTH;
g->g.Height = GDISP_SCREEN_HEIGHT;
g->g.Orientation = GDISP_ROTATE_0;
g->g.Powermode = powerOn;
g->g.Backlight = GDISP_INITIAL_BACKLIGHT;
g->g.Contrast = GDISP_INITIAL_CONTRAST;
return TRUE;
}
#if GDISP_HARDWARE_STREAM_WRITE
LLDSPEC void gdisp_lld_write_start(GDisplay *g) {
acquire_bus(g);
set_viewport(g);
write_index(g, 0x2C);
}
LLDSPEC void gdisp_lld_write_color(GDisplay *g) {
write_data16(g, g->p.color);
}
LLDSPEC void gdisp_lld_write_stop(GDisplay *g) {
release_bus(g);
}
#endif
#if GDISP_HARDWARE_STREAM_READ
LLDSPEC void gdisp_lld_read_start(GDisplay *g) {
acquire_bus(g);
set_viewport(g);
write_index(g, 0x2E);
setreadmode(g);
dummy_read(g);
}
LLDSPEC color_t gdisp_lld_read_color(GDisplay *g) {
uint16_t data;
data = read_data(g);
return gdispNative2Color(data);
}
LLDSPEC void gdisp_lld_read_stop(GDisplay *g) {
setwritemode(g);
release_bus(g);
}
#endif
#if GDISP_NEED_CONTROL && GDISP_HARDWARE_CONTROL
LLDSPEC void gdisp_lld_control(GDisplay *g) {
switch(g->p.x) {
case GDISP_CONTROL_POWER:
if (g->g.Powermode == (powermode_t)g->p.ptr)
return;
switch((powermode_t)g->p.ptr) {
case powerOff:
case powerSleep:
case powerDeepSleep:
acquire_bus(g);
write_reg(g, 0x0010, 0x0001); /* enter sleep mode */
release_bus(g);
break;
case powerOn:
acquire_bus(g);
write_reg(g, 0x0010, 0x0000); /* leave sleep mode */
release_bus(g);
break;
default:
return;
}
g->g.Powermode = (powermode_t)g->p.ptr;
return;
case GDISP_CONTROL_ORIENTATION:
if (g->g.Orientation == (orientation_t)g->p.ptr)
return;
switch((orientation_t)g->p.ptr) {
case GDISP_ROTATE_0:
acquire_bus(g);
write_reg(g, 0x36, 0x48); /* X and Y axes non-inverted */
release_bus(g);
g->g.Height = GDISP_SCREEN_HEIGHT;
g->g.Width = GDISP_SCREEN_WIDTH;
break;
case GDISP_ROTATE_90:
acquire_bus(g);
write_reg(g, 0x36, 0xE8); /* Invert X and Y axes */
release_bus(g);
g->g.Height = GDISP_SCREEN_WIDTH;
g->g.Width = GDISP_SCREEN_HEIGHT;
break;
case GDISP_ROTATE_180:
acquire_bus(g);
write_reg(g, 0x36, 0x88); /* X and Y axes non-inverted */
release_bus(g);
g->g.Height = GDISP_SCREEN_HEIGHT;
g->g.Width = GDISP_SCREEN_WIDTH;
break;
case GDISP_ROTATE_270:
acquire_bus(g);
write_reg(g, 0x36, 0x28); /* Invert X and Y axes */
release_bus(g);
g->g.Height = GDISP_SCREEN_WIDTH;
g->g.Width = GDISP_SCREEN_HEIGHT;
break;
default:
return;
}
g->g.Orientation = (orientation_t)g->p.ptr;
return;
case GDISP_CONTROL_BACKLIGHT:
if ((unsigned)g->p.ptr > 100)
g->p.ptr = (void *)100;
set_backlight(g, (unsigned)g->p.ptr);
g->g.Backlight = (unsigned)g->p.ptr;
return;
//case GDISP_CONTROL_CONTRAST:
default:
return;
}
}
#endif
#endif /* GFX_USE_GDISP */
gfxconf.h file:
#ifndef _GFXCONF_H
#define _GFXCONF_H
#define GFX_USE_OS_RAW32 TRUE
#define GFX_OS_HEAP_SIZE 10000
#define GFX_USE_GDISP TRUE
#define GDISP_DRIVER_LIST GDISPVMT_ST7789V
#define GDISP_HARDWARE_STREAM_WRITE TRUE
#define GDISP_HARDWARE_CONTROL TRUE
#define GDISP_PIXELFORMAT GDISP_PIXELFORMAT_RGB565
#endif /* _GFXCONF_H */
