void LCD_ReqTear(void)
{
static uint8_t ScanLineParams[2];
uint16_t scanline = 533;
ScanLineParams[0] = scanline >> 8;
ScanLineParams[1] = scanline & 0x00FF;
HAL_DSI_LongWrite(&hdsi, 0, DSI_DCS_LONG_PKT_WRITE, 2, 0x44, ScanLineParams); // /* Write Tearing Effect Scan line command */
// set_tear_on
HAL_DSI_ShortWrite(&hdsi, 0, DSI_DCS_SHORT_PKT_WRITE_P1, 0x35, 0x00); // /* Tearing Effect Line On command : command with 1 parameter 'TELOM' */
}
The above source is generated by the stm32f469i_discoveryTouchGFX proram.
What I am curious about is the meaning of "scanline" and why it has 533 values.
The stm32f469i_discovery lcd is 800 *480. Is it related to 480?
If it is related to 480 I want to know how 533 comes out.
LTDC->AWCR = ((WIDTH + 2) << 16) | 0x1E2; //
LTDC->TWCR = ((WIDTH + 2 + 1) << 16) | 0x1E3;
LTDC_Layer1->WHPCR = ((WIDTH + 2) << 16) | 3;
LTDC_Layer1->CFBLR = (((832 * 2) << 16) | ((WIDTH * 2) + 3));
In addition, if there is any data that can understand the calculation process and meaning of AWCR, TWCR, WHPCR, CFBLR in LTDC, it would be appreciated if you could tell me which information to see
