📄 ddi_display_controller_hx8347a.c
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// ---------------------
// | | G0
// | |
// | |
// | |
// | |
// | |
// | | 320
// | |
// | |
// | |
// | |
// | |
// | | G319
// ---------------------
// |Ribbon cable |
// ---------------
//
switch(eRotation)
{//11 03 12 00
case DDI_DISPLAY_ROTATION_NONE:
u16SourceWinStart_high=(uint16_t)(((u32XDst)&0x0000FF00)>>8);
u16SourceWinStart_low=(uint16_t)((u32XDst)&0x000000FF);
u16SourceWinStop_high=(uint16_t)(((u32XDst + *pu32Width - 1)&0x0000FF00)>>8);
u16SourceWinStop_low=(uint16_t)((u32XDst + *pu32Width - 1)&0x000000FF);
u16GateWinStart_high=(uint16_t)(((u32YDst)&0x0000FF00)>>8);
u16GateWinStart_low=(uint16_t)((u32YDst)&0x000000FF);
u16GateWinStop_high=(uint16_t)(((u32YDst + *pu32Height - 1)&0x0000FF00)>>8);
u16GateWinStop_low=(uint16_t)((u32YDst + *pu32Height - 1)&0x000000FF);
break;
case DDI_DISPLAY_ROTATION_90:
u16SourceWinStart_high=(uint16_t)(((u32XDst)&0x0000FF00)>>8);
u16SourceWinStart_low=(uint16_t)((u32XDst)&0x000000FF);
u16SourceWinStop_high=(uint16_t)(((u32XDst + *pu32Width - 1)&0x0000FF00)>>8);
u16SourceWinStop_low=(uint16_t)((u32XDst + *pu32Width - 1)&0x000000FF);
u16GateWinStart_high=(uint16_t)(((u32YDst)&0x0000FF00)>>8);
u16GateWinStart_low=(uint16_t)((u32YDst)&0x000000FF);
u16GateWinStop_high=(uint16_t)(((u32YDst + *pu32Height - 1)&0x0000FF00)>>8);
u16GateWinStop_low=(uint16_t)((u32YDst + *pu32Height - 1)&0x000000FF);
break;
case DDI_DISPLAY_ROTATION_180:
u16SourceWinStart_high=(uint16_t)(((u32XDst)&0x0000FF00)>>8);
u16SourceWinStart_low=(uint16_t)((u32XDst)&0x000000FF);
u16SourceWinStop_high=(uint16_t)(((u32XDst + *pu32Width - 1)&0x0000FF00)>>8);
u16SourceWinStop_low=(uint16_t)((u32XDst + *pu32Width - 1)&0x000000FF);
u16GateWinStart_high=(uint16_t)(((u32YDst)&0x0000FF00)>>8);
u16GateWinStart_low=(uint16_t)((u32YDst)&0x000000FF);
u16GateWinStop_high=(uint16_t)(((u32YDst + *pu32Height - 1)&0x0000FF00)>>8);
u16GateWinStop_low=(uint16_t)((u32YDst + *pu32Height - 1)&0x000000FF);
break;
case DDI_DISPLAY_ROTATION_270:
u16SourceWinStart_high=(uint16_t)(((u32XDst)&0x0000FF00)>>8);
u16SourceWinStart_low=(uint16_t)((u32XDst)&0x000000FF);
u16SourceWinStop_high=(uint16_t)(((u32XDst + *pu32Width - 1)&0x0000FF00)>>8);
u16SourceWinStop_low=(uint16_t)((u32XDst + *pu32Width - 1)&0x000000FF);
u16GateWinStart_high=(uint16_t)(((u32YDst)&0x0000FF00)>>8);
u16GateWinStart_low=(uint16_t)((u32YDst)&0x000000FF);
u16GateWinStop_high=(uint16_t)(((u32YDst + *pu32Height - 1)&0x0000FF00)>>8);
u16GateWinStop_low=(uint16_t)((u32YDst + *pu32Height - 1)&0x000000FF);
break;
}
WriteDirect(CMD_MODE,0x02);
WriteDirect(DATA_MODE,u16SourceWinStart_high);
WriteDirect(CMD_MODE,0x03);
WriteDirect(DATA_MODE,u16SourceWinStart_low );
WriteDirect(CMD_MODE,0x04);
WriteDirect(DATA_MODE,u16SourceWinStop_high);
WriteDirect(CMD_MODE,0x05);
WriteDirect(DATA_MODE,u16SourceWinStop_low);
WriteDirect(CMD_MODE,0x06);
WriteDirect(DATA_MODE,u16GateWinStart_high);
WriteDirect(CMD_MODE,0x07);
WriteDirect(DATA_MODE,u16GateWinStart_low);
WriteDirect(CMD_MODE,0x08);
WriteDirect(DATA_MODE,u16GateWinStop_high);
WriteDirect(CMD_MODE,0x09);
WriteDirect(DATA_MODE,u16GateWinStop_low);
WriteDirect(CMD_MODE,0x22);
return ret;
}
////////////////////////////////////////////////////////////////////////////////
//! \fn RtStatus_t SendControllerBitmapType(gfx_BitmapTypeEnum_t eBitmapType)
//!
//! \brief Sets up the controller for the specified bitmap format
//!
//! \fntype Function
//!
//! \param[in] eBitmapType - The new bitmap format
//!
//! This function sends the appropriate commands to the display controller
//! to set it up for the new bitmap type format.
//!
//! \retval SUCCESS No error
//!
//! \retval ERROR_DDI_DISPLAY_CONTROLLER_BITMAP_TYPE_UNSUPPORTED - The specified bitmap
//! type is not supported by the controller
//!
////////////////////////////////////////////////////////////////////////////////
static RtStatus_t SendControllerBitmapType(gfx_BitmapTypeEnum_t eBitmapType)
{
// Only 16-bit 565 mode supported
if( eBitmapType != BITMAP_TYPE_16BPP_565 )
return ERROR_DDI_DISPLAY_CONTROLLER_BITMAP_TYPE_UNSUPPORTED;
return SUCCESS;
}
////////////////////////////////////////////////////////////////////////////////
//! \fn static RtStatus_t SendControllerResolution(uint16_t u16Width, uint16_t u16Height, ddi_display_Rotation_t eRotation)
//!
//! \brief Sets up the controller for the specified resolution
//!
//! \fntype Function
//!
//! \param[in] u16Width - Desired width of the display
//! \param[in] u16Height - Desired height of the display
//! \param[in] eRotation Desired orientation of the display
//!
//! The display driver is built with a default width and height for each
//! controller. Most controllers support displays of varying screen
//! dimensions. In order to support all possible dimensions without rebuilding
//! the display libraries, this function can set the dimensions of the display
//! to match the actual display in use. This function only needs to be called
//! once to set the dimensions for the currently set screen orientation. If the
//! display is rotated after the dimensions are set, then the dimensions will
//! be adjusted accordingly in the display driver. There is no need to reset
//! the dimensions after rotating the display.
//!
//! \retval SUCCESS No error
//!
//! \retval ERROR_DDI_DISPLAY_CONTROLLER_RESOLUTION - The specified resolution is
//! not supported by the controller
//!
////////////////////////////////////////////////////////////////////////////////
static RtStatus_t SendControllerResolution(uint16_t u16Width, uint16_t u16Height, ddi_display_Rotation_t eRotation)
{
uint16_t u16MaxWidth;
uint16_t u16MaxHeight;
// max dimensions are rotation specific
switch(eRotation)
{
case DDI_DISPLAY_ROTATION_NONE:
case DDI_DISPLAY_ROTATION_180:
u16MaxWidth = DDI_DISPLAY_CONTROLLER_MAX_WIDTH;
u16MaxHeight = DDI_DISPLAY_CONTROLLER_MAX_HEIGHT;
break;
case DDI_DISPLAY_ROTATION_90:
case DDI_DISPLAY_ROTATION_270:
u16MaxWidth = DDI_DISPLAY_CONTROLLER_MAX_HEIGHT;
u16MaxHeight = DDI_DISPLAY_CONTROLLER_MAX_WIDTH;
break;
}
// Check for out of bounds
if( u16Width > u16MaxWidth || u16Height > u16MaxHeight )
return ERROR_DDI_DISPLAY_CONTROLLER_RESOLUTION;
return SUCCESS;
}
////////////////////////////////////////////////////////////////////////////////
//! \fn static RtStatus_t SendControllerRotation(ddi_display_Rotation_t eRotation)
//!
//! \brief Sets up the controller for the specified rotation
//!
//! \fntype Function
//!
//! \param[in] eRotation - Desired orientation of the display
//!
//! When the display driver is instructed to orient the screen to a new
//! rotation, this function sends a command to the controller to indicate this change.
//!
//! \retval SUCCESS No error
//!
//! \retval ERROR_DDI_DISPLAY_CONTROLLER_ROTATION - The specified rotation is
//! not supported by the controller
//!
////////////////////////////////////////////////////////////////////////////////
static RtStatus_t SendControllerRotation(ddi_display_Rotation_t eRotation)
{
RtStatus_t ret = SUCCESS;
Hx8347aEntryMode EntryMode = {0x00A8};
//EntryMode.B.Reserved= 0;
//EntryMode.B.BGR=1;
//EntryMode.B.ML=0;
//EntryMode.B.MV=1;
//EntryMode.B.MX=1;
//EntryMode.B.MY=0;
//EntryMode.B.Reserved1=0;
// Gate/Source diagram
//
// 240
// S719 S0
// ---------------------
// | | G0
// | |
// | |
// | |
// | |
// | |
// | | 320
// | |
// | |
// | |
// | |
// | |
// | | G319
// ---------------------
// |Ribbon cable |
// ---------------
//
switch(eRotation)
{
case DDI_DISPLAY_ROTATION_NONE:
EntryMode.V=0x00A8;
break;
case DDI_DISPLAY_ROTATION_90:
EntryMode.V=0x0008;
break;
case DDI_DISPLAY_ROTATION_180:
EntryMode.V=0x068;
break;
case DDI_DISPLAY_ROTATION_270:
EntryMode.V=0x00C8;
break;
default:
ret = ERROR_DDI_DISPLAY_CONTROLLER_ROTATION;
break;
}
if( !ret )
{
WriteDirect(CMD_MODE, 0x16); // Entry Mode
WriteDirect(DATA_MODE, EntryMode.V);
}
return ret;
}
////////////////////////////////////////////////////////////////////////////////
//! \fn RtStatus_t ddi_display_controller_SendCommand(ddi_display_controller_CommandType_t eType, ...)
//!
//! \brief Sends the specified command to the controller
//!
//! \fntype Function
//!
//! \param[in] eType - Type of command to send
//! \param[in] ... Variable argument list - The rest of the arguments are specific
//! to the type of command is to be sent. Refer to
//! ddi_display_controller.h for command types and their
//! corresponding argument lists.
//!
//! \retval SUCCESS No error
//!
//! \retval ERROR_DDI_DISPLAY_CONTROLLER_COMMAND_UNSUPPORTED - This
//! controller does not support the given command type
//!
//! \retval ERROR_DDI_DISPLAY_CONTROLLER_BITMAP_TYPE_UNSUPPORTED - This
//! controller does not support the given bitmap color type
//!
//! \retval ERROR_DDI_DISPLAY_CONTROLLER_ROTATION - The specified rotation is
//! not supported by the controller
//!
//! \retval ERROR_DDI_DISPLAY_PLACEMENT - There was an error placing the given
//! region on the display that clipping could not compensate for.
//!
////////////////////////////////////////////////////////////////////////////////
RtStatus_t ddi_display_controller_SendCommand(ddi_display_controller_CommandType_t eType, ...)
{
RtStatus_t ret = SUCCESS;
va_list valist;
ddi_display_controller_CommandType_t eCommandType = eType;
va_start(valist, eType);
switch(eCommandType)
{
case DDI_DISPLAY_CONTROLLER_SET_REGION:
{
uint32_t u32XDst = va_arg(valist, uint32_t);
uint32_t u32YDst = va_arg(valist, uint32_t);
uint32_t *pu32Width = va_arg(valist, uint32_t *);
uint32_t *pu32Height = va_arg(valist, uint32_t *);
ddi_display_Rotation_t eRotation = (ddi_display_Rotation_t)va_arg(valist, ddi_display_Rotation_t);
ret = SendControllerRegion(u32XDst, u32YDst, pu32Width, pu32Height, eRotation);
}
break;
case DDI_DISPLAY_CONTROLLER_INIT:
{
gfx_BitmapTypeEnum_t eBitmapType = va_arg(valist, gfx_BitmapTypeEnum_t);
uint32_t u32ScreenWidth = va_arg(valist, uint32_t);
uint32_t u32ScreenHeight = va_arg(valist, uint32_t);
InitPwmBacklight();
// SetPwmBrightness(50);
// SendControllerOutputEnable(true);
SendControllerInitSeq(eBitmapType, u32ScreenWidth, u32ScreenHeight);
}
break;
case DDI_DISPLAY_CONTROLLER_OUTPUT_ENABLE:
SendControllerOutputEnable(va_arg(valist, bool));
break;
/*
#ifdef RTOS_THREADX
case DDI_DISPLAY_CONTROLLER_SET_VIDEO_MODE:
SendControllerVideoMode(va_arg(valist, ddi_display_VideoMode_t));
break;
case DDI_DISPLAY_CONTROLLER_WAIT_FOR_VSYNC:
ret = WaitForControllerVsync();
break;
#endif
*/
// Contrast not supported by this controller. The Solomon Systech
// engineers say that you need to adjust greyscale and all sorts of
// voltages that can greatly impact the display's performance. There's
// not any simple dedicated contrast register setting.
// case DDI_DISPLAY_CONTROLLER_SET_CONTRAST:
// SendControllerContrast(va_arg(valist, uint32_t));
// break;
case DDI_DISPLAY_CONTROLLER_SET_BRIGHTNESS:
SetPwmBrightness(va_arg(valist, uint32_t));
break;
case DDI_DISPLAY_CONTROLLER_SET_ROTATION:
{
ddi_display_Rotation_t eRotation = va_arg(valist, ddi_display_Rotation_t);
ret = SendControllerRotation(eRotation);
}
break;
case DDI_DISPLAY_CONTROLLER_SET_RESOLUTION:
{
uint16_t u16Width = va_arg(valist, uint16_t);
uint16_t u16Height = va_arg(valist, uint16_t);
ddi_display_Rotation_t eRotation = va_arg(valist, ddi_display_Rotation_t);
ret = SendControllerResolution(u16Width, u16Height, eRotation);
break;
}
case DDI_DISPLAY_CONTROLLER_SET_BITMAP_TYPE:
ret = SendControllerBitmapType(va_arg(valist, gfx_BitmapTypeEnum_t));
break;
case DDI_DISPLAY_CONTROLLER_SET_LOW_POWER_MODE:
SetControllerLowPowerMode(va_arg(valist, bool));
break;
default:
ret = ERROR_DDI_DISPLAY_CONTROLLER_COMMAND_UNSUPPORTED;
break;
}
va_end(valist);
return ret;
}
///////////////////////////////////////////////////////////////////////////////
// End of file
///////////////////////////////////////////////////////////////////////////////
//! @}
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