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Improve helloworld example for Supervision

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Fabrizio Caruso 2019-10-06 13:41:02 +02:00 • committed by Oliver Schmidt
parent 915836b3ec
commit eb83a3fd0f
1 changed files with 41 additions and 32 deletions
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69
samples/supervisionhello.c
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@ -1,17 +1,15 @@
#include <supervision.h> #include <supervision.h>
#include <peekpoke.h> #include <peekpoke.h>
#define SV_OFFSET 0x0A #define BYTES_PER_LINE 48
#define SV_INIT_POSITION (SV_VIDEO+0x0A*48+0x0A)
unsigned char h_char[] = {0x66,0x66,0x66,0x7e,0x66,0x66,0x66,0x00};
unsigned char e_char[] = {0x7e,0x60,0x60,0x78,0x60,0x60,0x7e,0x00};
unsigned char l_char[] = {0x60,0x60,0x60,0x60,0x60,0x60,0x7e,0x00};
unsigned char o_char[] = {0x3c,0x66,0x66,0x66,0x66,0x66,0x3c,0x00};
unsigned char w_char[] = {0x63,0x63,0x63,0x6b,0x7f,0x77,0x63,0x00};
unsigned char r_char[] = {0x7c,0x66,0x66,0x7c,0x78,0x6c,0x66,0x00};
unsigned char d_char[] = {0x78,0x6c,0x66,0x66,0x66,0x6c,0x78,0x00};
const unsigned char h_char[] = {0x66,0x66,0x66,0x7E,0x66,0x66,0x66,0x00};
const unsigned char e_char[] = {0x7E,0x60,0x60,0x78,0x60,0x60,0x7E,0x00};
const unsigned char l_char[] = {0x60,0x60,0x60,0x60,0x60,0x60,0x7E,0x00};
const unsigned char o_char[] = {0x3C,0x66,0x66,0x66,0x66,0x66,0x3C,0x00};
const unsigned char w_char[] = {0x63,0x63,0x63,0x6B,0x7F,0x77,0x63,0x00};
const unsigned char r_char[] = {0x7C,0x66,0x66,0x7C,0x78,0x6C,0x66,0x00};
const unsigned char d_char[] = {0x78,0x6C,0x66,0x66,0x66,0x6C,0x78,0x00};
void clear_screen(void) void clear_screen(void)
{ {
@ -23,37 +21,48 @@ void clear_screen(void)
} }
} }
unsigned char bit_reverse_lookup[16] = unsigned char reversed_map_one_to_two_lookup[16] =
{ {
0x0, 0x8, 0x4, 0xC, 0x2, 0xA, 0x6, 0xE, 0x00, 0xC0, 0x30, 0xF0, 0x0C, 0xCC, 0x3C, 0xFC,
0x1, 0x9, 0x5, 0xD, 0x3, 0xB, 0x7, 0xF 0x03, 0xC3, 0x33, 0xF3, 0x0F, 0xCF, 0x3F, 0xFF
}; };
unsigned char bit_reverse(unsigned char n) unsigned char left_map_one_to_two(unsigned char n)
{ {
return (bit_reverse_lookup[n&0b1111] << 4) | bit_reverse_lookup[n>>4]; return reversed_map_one_to_two_lookup[n >> 4];
}
unsigned char right_map_one_to_two(unsigned char n)
{
return reversed_map_one_to_two_lookup[n&0x0F];
}
void display_char(const unsigned char x, const unsigned char y, const unsigned char *ch)
{
unsigned char k;
for(k=0;k<8;++k)
{ \
SV_VIDEO[2*(y)+BYTES_PER_LINE*k+BYTES_PER_LINE*(x<<3)] = left_map_one_to_two(ch[k]);
SV_VIDEO[2*(y)+BYTES_PER_LINE*k+BYTES_PER_LINE*(x<<3)+1] = right_map_one_to_two(ch[k]);
}
} }
int main() int main()
{ {
unsigned char i;
clear_screen(); clear_screen();
for(i=0;i<8;++i) display_char(3,2, h_char);
{ display_char(3,3, e_char);
POKE(SV_INIT_POSITION+1 +i*48,bit_reverse(h_char[i])); display_char(3,4, l_char);
POKE(SV_INIT_POSITION+2 +i*48,bit_reverse(e_char[i])); display_char(3,5, l_char);
POKE(SV_INIT_POSITION+3 +i*48,bit_reverse(l_char[i])); display_char(3,6, o_char);
POKE(SV_INIT_POSITION+4 +i*48,bit_reverse(l_char[i]));
POKE(SV_INIT_POSITION+5 +i*48,bit_reverse(o_char[i]));
POKE(SV_INIT_POSITION+7 +i*48,bit_reverse(w_char[i])); display_char(3,8, w_char);
POKE(SV_INIT_POSITION+8 +i*48,bit_reverse(o_char[i])); display_char(3,9, o_char);
POKE(SV_INIT_POSITION+9 +i*48,bit_reverse(r_char[i])); display_char(3,10,r_char);
POKE(SV_INIT_POSITION+10+i*48,bit_reverse(l_char[i])); display_char(3,11,l_char);
POKE(SV_INIT_POSITION+11+i*48,bit_reverse(d_char[i])); display_char(3,12,d_char);
}
while(1) {}; while(1) {};