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drivers/lcd/st7789: Add option for RGB data endian

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Big endian by default.

Signed-off-by: wangjianyu3 <wangjianyu3@xiaomi.com>
This commit is contained in:
wangjianyu3
2025-03-31 16:27:31 +08:00
committed by Alan C. Assis
parent 8af44d0385
commit f42b784349
2 changed files with 40 additions and 0 deletions
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drivers/lcd/Kconfig
+6
View File
@@ -815,6 +815,12 @@ config LCD_ST7789_IFDELAY
---help---
The delay between consecutive frames. In ns.
config LCD_ST7789_DATA_ENDIAN_LITTLE
bool "ST7789 RGB data endian little"
default n
---help---
The RGB data endian, MSB first by default(n).
endif # LCD_ST7789
config LCD_GC9A01
drivers/lcd/st7789.c
+34
View File
@@ -497,6 +497,39 @@ static void st7789_setorientation(FAR struct st7789_dev_s *dev)
}
#endif
static void st7789_ramctl(FAR struct st7789_dev_s *dev)
{
/* ============ ==== ==== ====== ====== ======== ===== ====== ======
* Parameters D7 D6 D5 D4 D3 D2 D1 D0
* ============ ==== ==== ====== ====== ======== ===== ====== ======
* 1st (LSB) 0 0 0 RM 0 0 DM1 DM0
* 2nd (MSB) 1 1 EPF1 EPF0 ENDIAN RIM MDT1 MDT0
* ============ ==== ==== ====== ====== ======== ===== ====== ======
*/
uint16_t ramctl = 0x0;
st7789_sendcmd(dev, ST7789_RAMCTRL);
st7789_select(dev->spi, LCD_ST7789_SPI_BITS * 2);
/* Fill the reserved bits */
ramctl |= 0xc000;
/* Set EPF */
ramctl |= 0x3000;
/* Set RGB data endian */
#ifdef CONFIG_LCD_ST7789_DATA_ENDIAN_LITTLE
ramctl |= 0x800;
#endif
SPI_SEND(dev->spi, LCD_ST7789_DATA_PREFIX | ramctl);
st7789_deselect(dev->spi);
}
/****************************************************************************
* Name: st7789_setarea
*
@@ -999,6 +1032,7 @@ FAR struct lcd_dev_s *st7789_lcdinitialize(FAR struct spi_dev_s *spi)
#else
st7789_setorientation(priv);
#endif
st7789_ramctl(priv);
st7789_display(priv, true);
st7789_fill(priv, CONFIG_LCD_ST7789_DEFAULT_COLOR);