diff --git a/components/esp_lcd/src/esp_lcd_panel_io_spi.c b/components/esp_lcd/src/esp_lcd_panel_io_spi.c index c1b9bde53d2..e335a906c2c 100644 --- a/components/esp_lcd/src/esp_lcd_panel_io_spi.c +++ b/components/esp_lcd/src/esp_lcd_panel_io_spi.c @@ -17,6 +17,8 @@ #include "esp_lcd_panel_io.h" #include "driver/spi_master.h" #include "driver/gpio.h" +#include "hal/gpio_ll.h" +#include "hal/gpio_hal.h" #include "esp_log.h" #include "esp_check.h" #include "esp_lcd_common.h" @@ -405,7 +407,10 @@ static void lcd_spi_pre_trans_cb(spi_transaction_t *trans) esp_lcd_panel_io_spi_t *spi_panel_io = trans->user; lcd_spi_trans_descriptor_t *lcd_trans = __containerof(trans, lcd_spi_trans_descriptor_t, base); if (spi_panel_io->dc_gpio_num >= 0) { // set D/C line level if necessary - gpio_set_level(spi_panel_io->dc_gpio_num, lcd_trans->flags.dc_gpio_level); + // use ll function to speed up + gpio_ll_set_level(&GPIO, spi_panel_io->dc_gpio_num, lcd_trans->flags.dc_gpio_level); + // ensure the D/C output is enabled + gpio_ll_output_enable(&GPIO, spi_panel_io->dc_gpio_num); } } @@ -413,6 +418,12 @@ static void lcd_spi_post_trans_color_cb(spi_transaction_t *trans) { esp_lcd_panel_io_spi_t *spi_panel_io = trans->user; lcd_spi_trans_descriptor_t *lcd_trans = __containerof(trans, lcd_spi_trans_descriptor_t, base); + + // disable the D/C output as we no longer need it + if (spi_panel_io->dc_gpio_num >= 0) { + gpio_ll_output_disable(&GPIO, spi_panel_io->dc_gpio_num); + } + if (lcd_trans->flags.en_trans_done_cb) { if (spi_panel_io->on_color_trans_done) { spi_panel_io->on_color_trans_done(&spi_panel_io->base, NULL, spi_panel_io->user_ctx);