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lcd/st77xx: change 16 bit cmd send to 8 bit 

Make sending commands independent of processor endianness. The data can
be handled by application side, such as LVGL has SWAP16 option.

Signed-off-by: Peter Bee <bijunda1@xiaomi.com>
This commit is contained in:
Peter Bee 2021-09-17 14:49:19 +08:00 committed by Alan Carvalho de Assis
parent a7a3d8bec7
commit ea6955f77b
3 changed files with 31 additions and 19 deletions
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16
drivers/lcd/gc9a01.c
View File

@ -482,17 +482,21 @@ static void gc9a01_setarea(FAR struct gc9a01_dev_s *dev,
/* Set row address */
gc9a01_sendcmd(dev, GC9A01_RASET);
gc9a01_select(dev->spi, 16);
SPI_SEND(dev->spi, y0 + GC9A01_YOFFSET);
SPI_SEND(dev->spi, y1 + GC9A01_YOFFSET);
gc9a01_select(dev->spi, 8);
SPI_SEND(dev->spi, (y0 + GC9A01_YOFFSET) >> 8);
SPI_SEND(dev->spi, (y0 + GC9A01_YOFFSET) & 0xff);
SPI_SEND(dev->spi, (y1 + GC9A01_YOFFSET) >> 8);
SPI_SEND(dev->spi, (y1 + GC9A01_YOFFSET) & 0xff);
gc9a01_deselect(dev->spi);
/* Set column address */
gc9a01_sendcmd(dev, GC9A01_CASET);
gc9a01_select(dev->spi, 16);
SPI_SEND(dev->spi, x0 + GC9A01_XOFFSET);
SPI_SEND(dev->spi, x1 + GC9A01_XOFFSET);
gc9a01_select(dev->spi, 8);
SPI_SEND(dev->spi, (x0 + GC9A01_XOFFSET) >> 8);
SPI_SEND(dev->spi, (x0 + GC9A01_XOFFSET) & 0xff);
SPI_SEND(dev->spi, (x1 + GC9A01_XOFFSET) >> 8);
SPI_SEND(dev->spi, (x1 + GC9A01_XOFFSET) & 0xff);
gc9a01_deselect(dev->spi);
}

16
drivers/lcd/st7735.c
View File

@ -405,17 +405,21 @@ static void st7735_setarea(FAR struct st7735_dev_s *dev,
/* Set row address */
st7735_sendcmd(dev, ST7735_RASET);
st7735_select(dev->spi, 16);
SPI_SEND(dev->spi, y0 + ST7735_YOFFSET);
SPI_SEND(dev->spi, y1 + ST7735_YOFFSET);
st7735_select(dev->spi, 8);
SPI_SEND(dev->spi, (y0 + ST7735_YOFFSET) >> 8);
SPI_SEND(dev->spi, (y0 + ST7735_YOFFSET) & 0xff);
SPI_SEND(dev->spi, (y1 + ST7735_YOFFSET) >> 8);
SPI_SEND(dev->spi, (y1 + ST7735_YOFFSET) & 0xff);
st7735_deselect(dev->spi);
/* Set column address */
st7735_sendcmd(dev, ST7735_CASET);
st7735_select(dev->spi, 16);
SPI_SEND(dev->spi, x0 + ST7735_XOFFSET);
SPI_SEND(dev->spi, x1 + ST7735_XOFFSET);
st7735_select(dev->spi, 8);
SPI_SEND(dev->spi, (x0 + ST7735_XOFFSET) >> 8);
SPI_SEND(dev->spi, (x0 + ST7735_XOFFSET) & 0xff);
SPI_SEND(dev->spi, (x1 + ST7735_XOFFSET) >> 8);
SPI_SEND(dev->spi, (x1 + ST7735_XOFFSET) & 0xff);
st7735_deselect(dev->spi);
}

18
drivers/lcd/st7789.c
View File

@ -300,7 +300,7 @@ static void st7789_deselect(FAR struct spi_dev_s *spi)
static inline void st7789_sendcmd(FAR struct st7789_dev_s *dev, uint8_t cmd)
{
st7789_select(dev->spi, ST7789_BYTESPP * 8);
st7789_select(dev->spi, 8);
SPI_CMDDATA(dev->spi, SPIDEV_DISPLAY(0), true);
SPI_SEND(dev->spi, cmd);
SPI_CMDDATA(dev->spi, SPIDEV_DISPLAY(0), false);
@ -386,17 +386,21 @@ static void st7789_setarea(FAR struct st7789_dev_s *dev,
/* Set row address */
st7789_sendcmd(dev, ST7789_RASET);
st7789_select(dev->spi, 16);
SPI_SEND(dev->spi, y0 + ST7789_YOFFSET);
SPI_SEND(dev->spi, y1 + ST7789_YOFFSET);
st7789_select(dev->spi, 8);
SPI_SEND(dev->spi, (y0 + ST7789_YOFFSET) >> 8);
SPI_SEND(dev->spi, (y0 + ST7789_YOFFSET) & 0xff);
SPI_SEND(dev->spi, (y1 + ST7789_YOFFSET) >> 8);
SPI_SEND(dev->spi, (y1 + ST7789_YOFFSET) & 0xff);
st7789_deselect(dev->spi);
/* Set column address */
st7789_sendcmd(dev, ST7789_CASET);
st7789_select(dev->spi, 16);
SPI_SEND(dev->spi, x0 + ST7789_XOFFSET);
SPI_SEND(dev->spi, x1 + ST7789_XOFFSET);
st7789_select(dev->spi, 8);
SPI_SEND(dev->spi, (x0 + ST7789_XOFFSET) >> 8);
SPI_SEND(dev->spi, (x0 + ST7789_XOFFSET) & 0xff);
SPI_SEND(dev->spi, (x1 + ST7789_XOFFSET) >> 8);
SPI_SEND(dev->spi, (x1 + ST7789_XOFFSET) & 0xff);
st7789_deselect(dev->spi);
}