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docs(spi_lcd): update supported spi mode description

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Closes https://github.com/espressif/esp-idf/issues/14605
This commit is contained in:
Chen Jichang
2024-09-19 14:15:15 +08:00
committed by morris
parent 24d39dea21
commit 941d389f28
1 changed files with 4 additions and 2 deletions
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6
docs/en/api-reference/peripherals/lcd.rst
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@@ -27,14 +27,16 @@ SPI Interfaced LCD
#. Create an SPI bus. Please refer to :doc:`SPI Master API doc </api-reference/peripherals/spi_master>` for more details.
Currently the driver supports SPI, Quad SPI and Octal SPI (simulate Intel 8080 timing) modes.
.. code-block:: c
spi_bus_config_t buscfg = {
.sclk_io_num = EXAMPLE_PIN_NUM_SCLK,
.mosi_io_num = EXAMPLE_PIN_NUM_MOSI,
.miso_io_num = EXAMPLE_PIN_NUM_MISO,
.quadwp_io_num = -1, // Quad SPI LCD driver is not yet supported
.quadhd_io_num = -1, // Quad SPI LCD driver is not yet supported
.quadwp_io_num = -1,
.quadhd_io_num = -1,
.max_transfer_sz = EXAMPLE_LCD_H_RES * 80 * sizeof(uint16_t), // transfer 80 lines of pixels (assume pixel is RGB565) at most in one SPI transaction
};
ESP_ERROR_CHECK(spi_bus_initialize(LCD_HOST, &buscfg, SPI_DMA_CH_AUTO)); // Enable the DMA feature