File content as of revision 2:8b6312dbfd2f:

#include "mbed.h"

SPI DataPack(SPI_MOSI, SPI_MISO, SPI_SCK);
DigitalOut Latch(D10);
AnalogIn VR0(A0);
AnalogIn VR1(A1);

float VR_value0,VR_value1;
int Base[6][3][3]= {
    //[6]=[0]_base1,[1]_base2,[2]_base3,[3]_base4,[4]_base5,[5]_base6
    //[3]=[0]_red,[1]_yello,[2]_green
    {{0x1F,0xFF,0xFF},{0x1F,0x1F,0xFF},{0xFF,0x1F,0xFF}} ,
    {{0x8F,0xFF,0xFF},{0x8F,0x8F,0xFF},{0xFF,0x8F,0xFF}} ,
    {{0xC7,0xFF,0xFF},{0xC7,0xC7,0xFF},{0xFF,0xC7,0xFF}} ,
    {{0xE3,0xFF,0xFF},{0xE3,0xE3,0xFF},{0xFF,0xE3,0xFF}} ,
    {{0xF1,0xFF,0xFF},{0xF1,0xF1,0xFF},{0xFF,0xF1,0xFF}} ,
    {{0xF8,0xFF,0xFF},{0xF8,0xF8,0xFF},{0xFF,0xF8,0xFF}}
};

void BaseColorUnder(int a,int b)
{
    Latch=0;
    DataPack.write(Base[a][b][0]);
    wait_us(1);
    DataPack.write(Base[a][b][1]);
    wait_us(1);
    DataPack.write(Base[a][b][2]);
    wait_us(1);
    DataPack.write(0x01);
    wait_us(1);
    Latch=1;
}

void BaseColorUpper(int a,int b)
{
    Latch=0;
    DataPack.write(Base[a][b][0]);
    wait_us(1);
    DataPack.write(Base[a][b][1]);
    wait_us(1);
    DataPack.write(Base[a][b][2]);
    wait_us(1);
    DataPack.write(0x80);
    wait_us(1);
    Latch=1;
}

//color >> red=0 , yello=1 , green=2
int BaseUnder(int color)
{
    VR_value0 = VR0.read();
    VR_value0 = VR_value0*6;

    if(VR_value0<=1) {
        //base1
        BaseColorUnder(0,color);
        return 1;
    } else if(VR_value0>1&&VR_value0<=2) {
        //base2
        BaseColorUnder(1,color);
        return 2;
    } else if(VR_value0>2&&VR_value0<=3) {
        //base3
        BaseColorUnder(2,color);
        return 3;
    } else if(VR_value0>3&&VR_value0<=4) {
        //base4
        BaseColorUnder(3,color);
        return 4;
    } else if(VR_value0>4&&VR_value0<=5) {
        //base5
        BaseColorUnder(4,color);
        return 5;
    } else if(VR_value0>5&&VR_value0<=6) {
        //base4
        BaseColorUnder(5,color);
        return 6;
    }
}

//color >> red=0 , yello=1 , green=2
int BaseUpper(int color)
{
    VR_value1 = VR1.read();
    VR_value1 = VR_value1*6;

    if(VR_value1<=1) {
        //base1
        BaseColorUpper(0,color);
        return 1;
    } else if(VR_value1>1&&VR_value1<=2) {
        //base2
        BaseColorUpper(1,color);
        return 2;
    } else if(VR_value1>2&&VR_value1<=3) {
        //base3
        BaseColorUpper(2,color);
        return 3;
    } else if(VR_value1>3&&VR_value1<=4) {
        //base4
        BaseColorUpper(3,color);
        return 4;
    } else if(VR_value1>4&&VR_value1<=5) {
        //base5
        BaseColorUpper(4,color);
        return 5;
    } else if(VR_value1>5&&VR_value1<=6) {
        //base4
        BaseColorUpper(5,color);
        return 6;
    }
}

int main()
{
    
    DataPack.frequency(100000);
    DataPack.format(8,0);
    
    while(1) {
        BaseUnder(1);
        BaseUpper(0);
    }
    
}