Mirrors/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2026-09-22 13:01:16 +03:00
Code Issues Packages Projects Releases Wiki Activity

fix(rgb_lcd): resync bounce buffer index when restarting DMA

Browse Source 
Closes https://github.com/espressif/esp-idf/issues/19070
This commit is contained in:
Chen Jichang
2026-09-11 17:03:29 +08:00
parent 71474016ec
commit f27fc5a479
1 changed files with 4 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
components/esp_lcd/rgb/esp_lcd_panel_rgb.c
View File

@@ -1189,10 +1189,10 @@ static IRAM_ATTR void lcd_rgb_panel_try_restart_transmission(esp_rgb_panel_t *pa
{
int bb_size_px = panel->bb_size / (panel->fb_bits_per_pixel / 8);
bool do_restart = false;
portENTER_CRITICAL_ISR(&panel->spinlock);
#if CONFIG_LCD_RGB_RESTART_IN_VSYNC
do_restart = true;
#else
portENTER_CRITICAL_ISR(&panel->spinlock);
if (panel->flags.need_restart) {
panel->flags.need_restart = false;
do_restart = true;
@@ -1200,9 +1200,10 @@ static IRAM_ATTR void lcd_rgb_panel_try_restart_transmission(esp_rgb_panel_t *pa
if (panel->bb_eof_count < panel->expect_eof_count) {
do_restart = true;
}
#endif // CONFIG_LCD_RGB_RESTART_IN_VSYNC
// DMA restart always relaunches from bounce buffer 0. Keep the software index in sync
panel->bb_eof_count = 0;
portEXIT_CRITICAL_ISR(&panel->spinlock);
#endif // CONFIG_LCD_RGB_RESTART_IN_VSYNC
if (!do_restart) {
return;
@@ -1253,6 +1254,7 @@ static void lcd_rgb_panel_start_transmission(esp_rgb_panel_t *rgb_panel)
// pre-fill bounce buffers if needed
if (rgb_panel->bb_size) {
rgb_panel->bounce_pos_px = 0;
rgb_panel->bb_eof_count = 0;
lcd_rgb_panel_fill_bounce_buffer(rgb_panel, rgb_panel->bounce_buffer[0]);
lcd_rgb_panel_fill_bounce_buffer(rgb_panel, rgb_panel->bounce_buffer[1]);
}