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Fill *buf initially with white in first set_px call. Remove additional nibble per row check since this is done already by LVGL#

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This commit is contained in:
martinberlin 2021-06-12 16:10:57 +02:00
parent cd28318973
commit 6dfa2a122a
1 changed files with 16 additions and 33 deletions
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49
lvgl_tft/epdiy_epaper_v2.cpp
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@ -9,6 +9,8 @@ EpdiyHighlevelState hl;
uint16_t flushcalls = 0;
uint8_t * framebuffer;
uint8_t temperature = 25;
bool init = true;
#define BUF_MAX 111600
/* Display initialization routine */
void epdiy_init(void)
@ -26,23 +28,15 @@ void buf_copy_to_framebuffer(EpdRect image_area, const uint8_t *image_data) {
assert(framebuffer != NULL);
for (uint32_t i = 0; i < image_area.width * image_area.height; i++) {
uint32_t value_index = i;
// For images of uneven width consume an additional nibble per row.
if (image_area.width % 2) {
value_index += i / image_area.width;
}
// Get out if we get the end of the buffer. Question: How to detect the end without a lenght?
// Zero terminator check gets out before: (image_data[value_index / 2]== '\0')
// 111684 seems to be the last element in image_data
if (value_index / 2 > 111600) {
printf("FOUND END incr:%d img[idx]:%d Aw:%d Ah:%d\n", i,
value_index / 2,image_area.width,image_area.height);
if (i / 2 > BUF_MAX) {
printf("FOUND END incr:%d Aw:%d Ah:%d\n", i, image_area.width, image_area.height);
break;
}
uint8_t val = (value_index % 2) ? (image_data[value_index / 2] & 0xF0) >> 4
: image_data[value_index / 2] & 0x0F;
uint8_t val = (i % 2) ? (image_data[i / 2] & 0xF0) >> 4
: image_data[i / 2] & 0x0F;
int xx = image_area.x + i % image_area.width;
if (xx < 0 || xx >= EPD_WIDTH) {
continue;
@ -99,37 +93,26 @@ void epdiy_set_px_cb(lv_disp_drv_t * disp_drv, uint8_t* buf,
lv_coord_t buf_w, lv_coord_t x, lv_coord_t y,
lv_color_t color, lv_opa_t opa)
{
// Debug
if (init) {
printf("Initialize *buf with white\n\n");
for (int i=0; i<BUF_MAX; i++) {
buf[i] = 0xff;
}
init = false;
}
// Test using RGB232
int16_t epd_color = 255;
if ((int16_t)color.full<250) {
epd_color = (int16_t)color.full/3;
}
//Instead of using epd_draw_pixel: Set pixel directly in buffer
//Instead of using epd_draw_pixel: Set pixel directly in *buf that comes afterwards in flush as *color_map
uint16_t idx = (int16_t)y * buf_w / 2 + (int16_t)x / 2;
if (x % 2) {
buf[idx] = (buf[idx] & 0x0F) | (epd_color & 0xF0);
} else {
buf[idx] = (buf[idx] & 0xF0) | (epd_color >> 4);
}
// Directly in framebuffer for epaper
/* uint8_t *buf_ptr = &framebuffer[(int16_t)y * buf_w / 2 + (int16_t)x / 2];
if (x % 2) {
*buf_ptr = (*buf_ptr & 0x0F) | (epd_color & 0xF0);
} else {
*buf_ptr = (*buf_ptr & 0xF0) | (epd_color >> 4);
} */
}
/* Not used at the moment */
void epdiy_rounder_cb(lv_disp_drv_t *disp_drv, lv_area_t *area) {
// Print coordinates to understand what rounder is
/*
uint16_t rw = (int16_t)lv_area_get_width(area);
uint16_t rh = (int16_t)lv_area_get_height(area);
printf("R x:%d y:%d w:%d h:%d\n",area->x1,area->y1,rw,rh); */
// Force y to be 0: Make some things better, screws other things
//area->y1 = 0;
}