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ST7789: LVGL rotation support (#182)

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* TFT/Kconfig: Update orientation values

* ST7789: Use lv_disp_drv_t rotation field instead of the configured from menuconfig

* ST7789: Update orientation at runtime

* ST7789: Apply workaround to detect orientation change at runtime

* ST7789: Add helper to get display size in v7 and v8

* ST7789: Fix compilation errors

* ST7789: Handle rotation of display with 135x240 dimension

* ST7789: Handle v8 when getting lv_disp_t from lv_disp_drv_t
This commit is contained in:
Carlos Diaz 2022-05-12 22:15:34 -05:00 committed by GitHub
parent 8d9f6e2548
commit 1759b774a9
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 119 additions and 30 deletions
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4
lvgl_tft/Kconfig
View file

@ -214,8 +214,8 @@ menu "LVGL TFT Display controller"
config LV_DISPLAY_ORIENTATION config LV_DISPLAY_ORIENTATION
int int
default 0 if LV_DISPLAY_ORIENTATION_PORTRAIT default 0 if LV_DISPLAY_ORIENTATION_PORTRAIT
default 1 if LV_DISPLAY_ORIENTATION_PORTRAIT_INVERTED default 2 if LV_DISPLAY_ORIENTATION_PORTRAIT_INVERTED
default 2 if LV_DISPLAY_ORIENTATION_LANDSCAPE default 1 if LV_DISPLAY_ORIENTATION_LANDSCAPE
default 3 if LV_DISPLAY_ORIENTATION_LANDSCAPE_INVERTED default 3 if LV_DISPLAY_ORIENTATION_LANDSCAPE_INVERTED
config LV_TFT_DISPLAY_OFFSETS config LV_TFT_DISPLAY_OFFSETS

145
lvgl_tft/st7789.c
View file

@ -33,7 +33,9 @@ static void st7789_send_data(lv_disp_drv_t * drv, void *data, uint16_t length);
static void st7789_send_color(lv_disp_drv_t * drv, void *data, uint16_t length); static void st7789_send_color(lv_disp_drv_t * drv, void *data, uint16_t length);
static void st7789_reset(lv_disp_drv_t * drv); static void st7789_reset(lv_disp_drv_t * drv);
static void setup_initial_offsets(void); static void setup_initial_offsets(lv_disp_drv_t * drv);
static lv_coord_t get_display_hor_res(lv_disp_drv_t * drv);
static lv_coord_t get_display_ver_res(lv_disp_drv_t * drv);
/********************** /**********************
* STATIC VARIABLES * STATIC VARIABLES
**********************/ **********************/
@ -49,7 +51,7 @@ static uint16_t user_y_offset = 0u;
**********************/ **********************/
void st7789_init(lv_disp_drv_t *drv) void st7789_init(lv_disp_drv_t *drv)
{ {
setup_initial_offsets(); setup_initial_offsets(drv);
lcd_init_cmd_t st7789_init_cmds[] = { lcd_init_cmd_t st7789_init_cmds[] = {
{0xCF, {0x00, 0x83, 0X30}, 3}, {0xCF, {0x00, 0x83, 0X30}, 3},
@ -99,8 +101,15 @@ void st7789_init(lv_disp_drv_t *drv)
cmd++; cmd++;
} }
/* FIXME We're setting up the initial orientation in the cmd array */ /* NOTE: Setting rotation from lv_disp_drv_t instead of menuconfig */
st7789_set_orientation(drv, ST7789_INITIAL_ORIENTATION); lv_disp_rot_t rotation;
#if (LVGL_VERSION_MAJOR >= 8)
rotation = lv_disp_get_rotation((lv_disp_t *) &drv);
#else
rotation = lv_disp_get_rotation((lv_disp_t *) drv);
#endif
st7789_set_orientation(drv, rotation);
} }
/* The ST7789 display controller can drive up to 320*240 displays, when using a 240*240 or 240*135 /* The ST7789 display controller can drive up to 320*240 displays, when using a 240*240 or 240*135
@ -116,6 +125,19 @@ void st7789_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * colo
uint16_t offsety2 = area->y2; uint16_t offsety2 = area->y2;
uint32_t size = lv_area_get_width(area) * lv_area_get_height(area); uint32_t size = lv_area_get_width(area) * lv_area_get_height(area);
/* On LVGLv7 we have to manually update the driver orientation,
* in LVGLv8 we use the driver update callback. */
#if (LVGL_VERSION_MAJOR < 8)
static lv_disp_rot_t cached_rotation = LV_DISP_ROT_NONE;
lv_disp_rot_t rotation = lv_disp_get_rotation((lv_disp_t *) drv);
if (cached_rotation != rotation) {
st7789_set_orientation(drv, (uint8_t) rotation);
/* Update offset values */
setup_initial_offsets(drv);
cached_rotation = rotation;
}
#endif
offsetx1 += st7789_x_offset(); offsetx1 += st7789_x_offset();
offsetx2 += st7789_x_offset(); offsetx2 += st7789_x_offset();
offsety1 += st7789_y_offset(); offsety1 += st7789_y_offset();
@ -207,7 +229,7 @@ static void st7789_set_orientation(lv_disp_drv_t *drv, uint8_t orientation)
#if CONFIG_LV_PREDEFINED_DISPLAY_TTGO #if CONFIG_LV_PREDEFINED_DISPLAY_TTGO
0x60, 0xA0, 0x00, 0xC0 0x60, 0xA0, 0x00, 0xC0
#else #else
0xC0, 0x00, 0x60, 0xA0 0xC0, 0x60, 0x00, 0xA0
#endif #endif
}; };
@ -215,32 +237,63 @@ static void st7789_set_orientation(lv_disp_drv_t *drv, uint8_t orientation)
st7789_send_data(drv, (void *) &data[orientation], 1); st7789_send_data(drv, (void *) &data[orientation], 1);
} }
static void setup_initial_offsets(void) static void setup_initial_offsets(lv_disp_drv_t * drv)
{ {
lv_disp_rot_t rotation;
#if (LVGL_VERSION_MAJOR >= 8)
rotation = lv_disp_get_rotation((lv_disp_t *) &drv);
#else
rotation = lv_disp_get_rotation((lv_disp_t *) drv);
#endif
#if (CONFIG_LV_TFT_DISPLAY_OFFSETS) #if (CONFIG_LV_TFT_DISPLAY_OFFSETS)
st7789_set_x_offset(CONFIG_LV_TFT_DISPLAY_X_OFFSET); st7789_set_x_offset(CONFIG_LV_TFT_DISPLAY_X_OFFSET);
st7789_set_y_offset(CONFIG_LV_TFT_DISPLAY_Y_OFFSET); st7789_set_y_offset(CONFIG_LV_TFT_DISPLAY_Y_OFFSET);
#else
#elif (LV_HOR_RES_MAX == 240) && (LV_VER_RES_MAX == 240) if (240U == get_display_hor_res(drv) && 135U == get_display_ver_res(drv))
#if (CONFIG_LV_DISPLAY_ORIENTATION_PORTRAIT) {
st7789_set_x_offset(80); if (LV_DISP_ROT_NONE == rotation || LV_DISP_ROT_180 == rotation)
st7789_set_y_offset(0); {
#elif (CONFIG_LV_DISPLAY_ORIENTATION_LANDSCAPE_INVERTED) st7789_set_x_offset(40);
st7789_set_x_offset(0); st7789_set_y_offset(53);
st7789_set_y_offset(80); }
#endif else
#elif (LV_HOR_RES_MAX == 240) && (LV_VER_RES_MAX == 135) {
#if (CONFIG_LV_DISPLAY_ORIENTATION_PORTRAIT) || \ st7789_set_x_offset(0);
(CONFIG_LV_DISPLAY_ORIENTATION_PORTRAIT_INVERTED) st7789_set_y_offset(0);
st7789_set_x_offset(40); }
st7789_set_y_offset(53); }
#endif else if (135U == get_display_hor_res(drv) && 240U == get_display_ver_res(drv))
#elif (LV_HOR_RES_MAX == 135) && (LV_VER_RES_MAX == 240) {
#if (CONFIG_LV_DISPLAY_ORIENTATION_LANDSCAPE) || \ if (LV_DISP_ROT_90 == rotation || LV_DISP_ROT_270 == rotation)
(CONFIG_LV_DISPLAY_ORIENTATION_LANDSCAPE_INVERTED) {
st7789_set_x_offset(52); st7789_set_x_offset(52);
st7789_set_y_offset(40); st7789_set_y_offset(40);
#endif }
else
{
st7789_set_x_offset(0);
st7789_set_y_offset(0);
}
}
else if (240U == get_display_hor_res(drv) && 240U == get_display_ver_res(drv))
{
if (LV_DISP_ROT_NONE == rotation)
{
st7789_set_x_offset(80);
st7789_set_y_offset(0);
}
else if (LV_DISP_ROT_90 == rotation || LV_DISP_ROT_180 == rotation)
{
st7789_set_x_offset(0);
st7789_set_y_offset(0);
}
else if (LV_DISP_ROT_270 == rotation)
{
st7789_set_x_offset(0);
st7789_set_y_offset(80);
}
}
#endif #endif
} }
@ -248,5 +301,41 @@ static void setup_initial_offsets(void)
* NOTE Available only for LVGL v8 */ * NOTE Available only for LVGL v8 */
void st7789_update_cb(lv_disp_drv_t *drv) void st7789_update_cb(lv_disp_drv_t *drv)
{ {
(void) drv; lv_disp_rot_t rotation;
#if (LVGL_VERSION_MAJOR >= 8)
rotation = lv_disp_get_rotation((lv_disp_t *) &drv);
#else
rotation = lv_disp_get_rotation((lv_disp_t *) drv);
#endif
st7789_set_orientation(drv, (uint8_t) rotation);
setup_initial_offsets(drv);
}
static lv_coord_t get_display_hor_res(lv_disp_drv_t * drv)
{
lv_coord_t retval = 0;
#if (LVGL_VERSION_MAJOR >= 8)
retval = drv->hor_res;
#else
(void) drv;
retval = LV_HOR_RES_MAX;
#endif
return retval;
}
static lv_coord_t get_display_ver_res(lv_disp_drv_t * drv)
{
lv_coord_t retval = 0;
#if (LVGL_VERSION_MAJOR >= 8)
retval = drv->ver_res;
#else
(void) drv;
retval = LV_VER_RES_MAX;
#endif
return retval;
} }