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lcd: spi lcd support transmit lsb first

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Closes https://github.com/espressif/esp-idf/issues/8790
This commit is contained in:
morris
2022-04-18 18:30:47 +08:00
parent de433105a2
commit 334bf89b0f
2 changed files with 4 additions and 2 deletions
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3
components/esp_lcd/src/esp_lcd_panel_io_spi.c
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@@ -72,7 +72,8 @@ esp_err_t esp_lcd_new_panel_io_spi(esp_lcd_spi_bus_handle_t bus, const esp_lcd_p
ESP_GOTO_ON_FALSE(spi_panel_io, ESP_ERR_NO_MEM, err, TAG, "no mem for spi panel io");
spi_device_interface_config_t devcfg = {
.flags = SPI_DEVICE_HALFDUPLEX, // only use TX path, so half duplex is enough
// currently the driver only supports TX path, so half duplex is enough
.flags = SPI_DEVICE_HALFDUPLEX | (io_config->flags.lsb_first ? SPI_DEVICE_TXBIT_LSBFIRST : 0),
.clock_speed_hz = io_config->pclk_hz,
.mode = io_config->spi_mode,
.spics_io_num = io_config->cs_gpio_num,