I am facing issue integrating the application. I am having a custom board made with STM32L471VG controller and having a Black&White LCD(255x160). All the required drivers are already available.
> I have an RTOS running on it.
> I have a seperate software component running in 100ms raster, which will take care of initializing the LCD and updates the LCD every 100ms. The component have an LCD buffer "char LcdRam[255*160];". After the data is filled into the buffer, LCD gets updated in the next immeidate job cycle.
> At the minimum, i am expecting to see something on display. Below is the code.
#include "tlsf.h"
#include "ewrte.h"
#include "ewgfx.h"
#include "ewextgfx.h"
#include "ewgfxdefs.h"
#include "Core.h"
#include "Graphics.h"
tlsf_t MemPool;
extern BYTE LcdRam[LCD_RAM_BUFFER_SIZE];
#define LCD_FB_START_ADDRESS (LcdRam)
void EmWiMainLoop( const void* arg );
/* define pyhiscal dimension of the LCD framebuffer */
#define FRAME_BUFFER_WIDTH LCD_LENGTH_PIXELS // ->255
#define FRAME_BUFFER_HEIGHT LCD_HEIGHT_PIXELS // ->160
/* calculated addresses for framebuffer(s) and memory manager */
#define FRAME_BUFFER_SIZE FRAME_BUFFER_WIDTH * FRAME_BUFFER_HEIGHT * FRAME_BUFFER_DEPTH
#define FRAME_BUFFER_ADDR (void*)(LCD_FB_START_ADDRESS)
#define MEMORY_POOL_SIZE 0x1000
const BYTE memPool[MEMORY_POOL_SIZE]={0};
#define MEMORY_POOL_ADDR (void*)memPool
#undef EW_ENABLE_COLOR_TABLE
#define EW_SURFACE_ROTATION 0
#define FREE_RTOS 0
CoreRoot rootObject;
XViewport* viewport;
XEnum cmd = CoreKeyCodeNoKey;
void Update( XViewport* aViewport, CoreRoot aApplication )
{
XBitmap* bitmap = EwBeginUpdate( aViewport );
GraphicsCanvas canvas = EwNewObject( GraphicsCanvas, 0 );
XRect updateRect = {{ 0, 0 }, { 0, 0 }};
/* let's redraw the dirty area of the screen. Cover the returned bitmap
objects within a canvas, so Mosaic can draw to it. */
if ( bitmap && canvas )
{
GraphicsCanvas__AttachBitmap( canvas, (XUInt32)bitmap );
updateRect = CoreRoot__UpdateGE20( aApplication, canvas );
GraphicsCanvas__DetachBitmap( canvas );
}
/* complete the update */
if ( bitmap )
{
EwEndUpdate( aViewport, updateRect );
}
/* check if there is a dirty area so that the screen should be updated */
if (( updateRect.Point2.X - updateRect.Point1.X <= 0 ) || ( updateRect.Point2.Y - updateRect.Point1.Y <= 0 ))
{
return;
}
/* start the update of the LCD via DSI */
//EwBspUpdateDisplay(); -> This is already done by different component
}
BYTE emWizInit(void) // <- Called at the main function.
{
int intGraphics;
SetBackLight(TRUE);
/* initialize tlsf memory manager */
MemPool = tlsf_create_with_pool( MEMORY_POOL_ADDR, MEMORY_POOL_SIZE );
/* initialize the Graphics Engine and Runtime Environment */
intGraphics = EwInitGraphicsEngine( 0 );
if ( intGraphics == 0)
return 1;
}
rootObject = (CoreRoot)EwNewObjectIndirect( EwApplicationClass, 0 );
EwLockObject( rootObject );
CoreRoot__Initialize( rootObject, EwScreenSize );
viewport = EwInitViewport( EwScreenSize, EwNewRect( 0, 0, FRAME_BUFFER_WIDTH, FRAME_BUFFER_HEIGHT ),
0, 255, FRAME_BUFFER_ADDR, DOUBLE_BUFFER_ADDR, 0, 0 );
return 0;
}
void EmWiMainLoop( const void* arg ) // This function is called every 100ms by the OS.
{
int timers = 0;
int signals = 0;
int events = 0;
int devices = 0;
/* process data of your device driver(s) and update the GUI
application by setting properties or by triggering events */
//devices = DeviceDriver_ProcessData(); <- Not focusing this as of now.
/* receive keyboard inputs */
//cmd = GetKeyCommand(); <- Not focusing this as of now.
if ( cmd != CoreKeyCodeNoKey )
{
/* feed the application with a 'press' and 'release' event */
events |= CoreRoot__DriveKeyboardHitting( rootObject, cmd, 0, 1 );
events |= CoreRoot__DriveKeyboardHitting( rootObject, cmd, 0, 0 );
}
/* process expired timers */
timers = EwProcessTimers();
/* process the pending signals */
signals = EwProcessSignals();
/* refresh the screen, if something has changed and draw its content */
if ( devices || timers || signals || events )
{
Update( viewport, rootObject );
/* after each processed message start the garbage collection */
EwReclaimMemory();
}
}
What is going wrong here, Am I missing something ? What are all the minimum things we should configured.
Please give your advice.
