diff --git a/components/esp_lcd/include/esp_lcd_io_spi.h b/components/esp_lcd/include/esp_lcd_io_spi.h index 3a4b338b353..7f498331bad 100644 --- a/components/esp_lcd/include/esp_lcd_io_spi.h +++ b/components/esp_lcd/include/esp_lcd_io_spi.h @@ -39,6 +39,7 @@ typedef struct { unsigned int octal_mode: 1; /*!< transmit data and parameters with 8 lines */ unsigned int quad_mode: 1; /*!< transmit data and parameters with 4 lines */ unsigned int sio_mode: 1; /*!< Read and write through a single data line (MOSI) */ + unsigned int psram_dma_direct: 1;/*!< If color buffer is in PSRAM, use PSRAM for DMA buffer directly, has speed limit, but no temp buffer and save memory */ unsigned int lsb_first: 1; /*!< Transmit LSB bit first */ unsigned int cs_high_active: 1; /*!< CS line is high active */ } flags; /*!< Extra flags to fine-tune the SPI device */ diff --git a/components/esp_lcd/spi/esp_lcd_panel_io_spi.c b/components/esp_lcd/spi/esp_lcd_panel_io_spi.c index e176691820e..09064bc6aa1 100644 --- a/components/esp_lcd/spi/esp_lcd_panel_io_spi.c +++ b/components/esp_lcd/spi/esp_lcd_panel_io_spi.c @@ -64,6 +64,7 @@ typedef struct { unsigned int dc_param_level: 1; // Indicates the level of DC line when transferring parameters unsigned int octal_mode: 1; // Indicates whether the transmitting is enabled with octal mode (8 data lines) unsigned int quad_mode: 1; // Indicates whether the transmitting is enabled with quad mode (4 data lines) + unsigned int psram_dma_direct: 1;// Indicates whether to use PSRAM for DMA buffer directly when color buffer is in PSRAM } flags; lcd_spi_trans_descriptor_t trans_pool[]; // Transaction pool } esp_lcd_panel_io_spi_t; @@ -107,6 +108,7 @@ esp_err_t esp_lcd_new_panel_io_spi(esp_lcd_spi_bus_handle_t bus, const esp_lcd_p spi_panel_io->flags.dc_param_level = !io_config->flags.dc_low_on_param; spi_panel_io->flags.octal_mode = io_config->flags.octal_mode; spi_panel_io->flags.quad_mode = io_config->flags.quad_mode; + spi_panel_io->flags.psram_dma_direct = io_config->flags.psram_dma_direct; spi_panel_io->on_color_trans_done = io_config->on_color_trans_done; spi_panel_io->user_ctx = io_config->user_ctx; spi_panel_io->lcd_cmd_bits = io_config->lcd_cmd_bits; @@ -371,7 +373,7 @@ static esp_err_t panel_io_spi_tx_color(esp_lcd_panel_io_t *io, int lcd_cmd, cons spi_panel_io->num_trans_inflight--; } memset(lcd_trans, 0, sizeof(lcd_spi_trans_descriptor_t)); - if (color_in_psram) { + if (color_in_psram && spi_panel_io->flags.psram_dma_direct) { // When the color buffer resides in PSRAM, set the DMA PSRAM flag lcd_trans->base.flags |= SPI_TRANS_DMA_USE_PSRAM; }