如何将Basys mx3计时器从十六进制更改为dec

Question

i am using Basys mx3, and using the SSDDEMO which function as timer in Hex, I am trying to change the timer to decimal, with no success.. how do i do that :)? many thanks, this is the link to ssddemo:

https://github.com/Digilent/Basys-MX3-library/blob/master/Demos/SSDDemo.X/ssd.c

Answer 1

In the given library, SSD_WriteDigitsGrouped() displays the four hex digits of the val argument. By first converting your integer to binary-coded decimal (BCD) format where each hex nibble represents a decimal digit value 0 to 9, you can display decimal values.

This can easily be done with a wrapper for SSD_WriteDigitsGrouped() that does the conversion. Implement the following function, and call it in place of SSD_WriteDigitsGrouped() :

void SSD_WriteDigitsGroupedBCD( unsigned int val, unsigned char dp )
{
    unsigned bcd = 0 ;
    int shift = 0 ;

    while( val > 0) 
    {
        bcd |= (val % 10) << (shift << 2) ;
        shift++ ;
        val /= 10;
    }

    SSD_WriteDigitsGrouped( bcd, dp ) ;
}