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Copy pathnexys-a7-vga.c
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nexys-a7-vga.c
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void main()
{
int *led;
int *gpio;
int *rbx;
int *rby;
int *gbx;
int *gby;
int led_val;
int gpio_val;
int direx;
int direy;
int rbxl;
int rbxr;
int rbyu;
int rbyd;
int gbxl;
int gbxr;
int gbyu;
int gbyd;
int tmp;
int delayrgb;
int delaykey;
led = 0x80000004;
gpio = 0x80000000;
rbx = 0x80001000;
rby = 0x80001004;
gbx = 0x80001008;
gby = 0x8000100c;
led_val = 0;
gpio_val = 0;
direx = 1;
direy = 1;
tmp = 0;
delayrgb = 10;
delaykey = 120;
*led = 0;
rbxl = 0x00000000;
rbxr = 0x00000014;
*rbx = 0x00000014; // 0 20
rbyu = 0x00000000;
rbyd = 0x00000014;
*rby = 0x00000014; // 0 20
gbxl = 0x00000000;
gbxr = 0x00000050;
*gbx = 0x00000050; // 0 80
gbyu = 0x02440000;
gbyd = 0x00000258;
*gby = 0x02440258; // 580 600
while (1)
{
gpio_val = *gpio;
if (gpio_val == 1) //left
{
if (gbxl >= 0x00140000)
{
gbxl = gbxl - 0x00140000;
gbxr = gbxr - 0x00000014;
tmp = gbxl + gbxr;
*gbx = tmp;
}
}
if (gpio_val == 2) //right
{
if (gbxr <= 0x0000030c)
{
gbxl = gbxl + 0x00140000;
gbxr = gbxr + 0x00000014;
tmp = gbxl + gbxr;
*gbx = tmp;
}
}
while (delaykey > 0)
{
delaykey = delaykey - 1;
}
delaykey = 120;
if (delayrgb > 0)
{
delayrgb = delayrgb - 1;
continue;
}
delayrgb = 10;
if (rbyu == 0)
{
direy = 1;
}
if (rbyd == 580) // think about touch down
{
if (rbxl >= gbxl && rbxr <= gbxr)
{
direy = 0;
}
else
{
direy = 2;
}
}
if (rbxl == 0)
{
direx = 1;
}
if (rbxr == 800)
{
direx = 0;
}
if (direx == 1)
{
rbxl = rbxl + 0x00140000;
rbxr = rbxr + 0x00000014;
}
if (direx == 0)
{
rbxl = rbxl - 0x00140000;
rbxr = rbxr - 0x00000014;
}
if (direy == 1)
{
rbyu = rbyu + 0x00140000;
rbyd = rbyd + 0x00000014;
}
if (direy == 0)
{
rbyu = rbyu - 0x00140000;
rbyd = rbyd - 0x00000014;
}
if (direy == 2) // fail
{
tmp = 0;
while (1)
{
delayrgb = 100;
while (delayrgb > 0)
{
delayrgb = delayrgb - 1;
}
tmp = tmp + 1;
*led = tmp;
}
}
tmp = rbxl + rbxr;
*rbx = tmp;
tmp = rbyu + rbyd;
*rby = tmp;
}
}