Library files of LPC2148 for HUB75 Based RGB Panel

The video contains library files to drive an RGB Panel on LPC2148.
In this video we see a pattern where the blocks change color with time to showcase a capability of the panel to generate color.
Please note that the lines were generated due to some camera issue and were not visible with naked eyes.

The pattern brings up blocks of colors with time of various colors shown below.

The lines are not visible via naked eyes.

Following functions were created:

void activatepanel(void);
void initClocks(void);
void initTimer0(void); 
void setupPLL0(void); 
void feedSeq(void); 
void connectPLL0(void);
void GPIO_Init_FAST(void);
void timerSettings(void);
void initializepanel(void);
void latch(int);
void setbitplane(int,int,int,int,int);
void drawpixelinit(void);
void drawpixel(int,int,int,int,int);
void drawverline(int,int,int,int,int,int);
void drawhorline(int,int,int,int,int,int);
void drawrect(int,int,int,int,int,int,int);

__irq void timer0ISR(void){
  long int readVal;
if(pixel<256){
if(pixel<3)
FIO0SET = 0x00040000;   //rgb
else
FIO0CLR = 0x00FC0000;   //rgb
FIO1SET = 0x00010000;   //clock 1
FIO1CLR = 0x00010000;   //clock 0
if((pixel==31)||(pixel==63)||(pixel==95)||(pixel==127)||(pixel==159)||(pixel==191)||(pixel==223)||(pixel==255))
latch();
}
else pixel=0;
pixel++;
readVal = T0IR; // Read current IR value 
T0IR = readVal; // Write back to IR to clear Interrupt Flag
VICVectAddr = 0x0; // End of interrupt execution
}

Running the LED panel on Arduino with library present in on the internet.

Scrolling "H" in a loop.
Does not work as per the video present in the link http://www.instructables.com/id/Arduino-UNO-Based-HUB75-LED-DISPLAY-DRIVER/

Learning:

Arduino

Inline assembly code