수다닷컴

질문 제목 : 주석달기, 같은 동작이지만 변형하기(또는 제 작성)도움 요청현 씨 파일을 같은 동작이지만 다른 형식으로 짜보려 하는대 어렵내요(변형또는 제 작성 요청입니다)
또 한가지는 변형 또는 제작성된 씨 파일 주석달기질문 내용 :

#include stdio.h
#include string.h
#include stdlib.h
#include unistd.h
#include sys/mman.h
#include fcntl.h

#define fpga_baseaddress 0x88000000
//#define buzzer_offset 0x50 // buzzer register
#define key_col_offset 0x70 // keypad column register
#define key_row_offset 0x72 // keypad row register

#define fpga_baseaddress 0x88000000
#define dot_row_offset 0x40
#define dot_col_offset 0x42
#define numsize 4

int main(void)
{
short value;
unsigned short *addr_fpga;
unsigned short *keypad_row_addr, *keypad_col_addr, *buzzer_addr;
int fd;
int i,quit=1,j,k;
int dot_fd;
int size, cnt, up_digit,count;
unsigned short dispdata[20], second_data;
unsigned short init_row=0x100, init_row2=0x008;//scan value
unsigned short *dot_row_addr, *dot_col_addr;
// number value
unsigned short font_num[92]= {
0x7f, 0x41, 0x41, 0x7f, // 0
0x40, 0x7f, 0x42, 0x00, // 1
0x4f, 0x49, 0x49, 0x79, // 2
0x7f, 0x49, 0x49, 0x49, // 3
0x10, 0x7f, 0x10, 0x1f, // 4
0x79, 0x49, 0x49, 0x4f, // 5
0x79, 0x49, 0x49, 0x7f, // 6
0x7f, 0x01, 0x01, 0x01, // 7
0x7f, 0x49, 0x49, 0x7f, // 8
0x7f, 0x49, 0x49, 0x4f, // 9
0x00, 0x3f, 0x09, 0x3f, // a
0x36, 0x49, 0x49, 0xff, // b
0x22, 0x41, 0x41, 0x3e, // c
0x3e, 0x41, 0x41, 0xff, // d
0x49, 0x49, 0x49, 0xff, // e
0x09, 0x09, 0x09, 0xff, // f};

if((dot_fd=open(/dev/mem,o_rdwr|o_sync)) 0) {
printf(mem open fail\n);
exit(1);
}
if ((fd=open(/dev/mem,o_rdwr|o_sync)) 0) {
perror(mem open fail\n);
exit(1);
}
addr_fpga= (unsigned short *)mmap(null, 4096,
prot_write|prot_read, map_shared, fd, fpga_baseaddress);
keypad_col_addr = addr_fpga + key_col_offset/sizeof(unsigned
short);
keypad_row_addr = addr_fpga + key_row_offset/sizeof(unsigned
short);
//buzzer_addr = addr_fpga + buzzer_offset/sizeof(unsigned short);
if(*keypad_row_addr ==(unsigned short)-1 || *keypad_col_addr
==(unsigned short)-1 ) {
close(fd);
printf(mmap error\n);
exit(1);
}

addr_fpga= (unsigned short *)mmap(null, 4096,
prot_read|prot_write, map_shared, dot_fd, fpga_baseaddress);
dot_row_addr = addr_fpga+dot_row_offset/sizeof(unsigned short);
dot_col_addr = addr_fpga+dot_col_offset/sizeof(unsigned short);
if(*dot_row_addr ==(unsigned short)-1 || *dot_col_addr
==(unsigned short)-1 ) {
close(dot_fd);
printf(mmap error \n);
exit(1);
}

printf(- keypad\n);
printf(press the key button!\n);
while(quit) {
*keypad_row_addr = 0x01;
usleep(1000);
value =(*keypad_col_addr & 0x0f);
*keypad_row_addr = 0x00;
switch(value) {
case 0x01 : value = 0x01; break;
case 0x02 : value = 0x02; break;
case 0x04 : value = 0x03; break;
case 0x08 : value = 0x04; break;
}
if(value != 0x00) goto stop_poll;

*keypad_row_addr = 0x02;
for(i=0;i2000;i++);
value = value|(*keypad_col_addr & 0x0f);
*keypad_row_addr = 0x00;
switch(value) {
case 0x01 : value = 0x05; break;
case 0x02 : value = 0x06; break;
case 0x04 : value = 0x07; break;
case 0x08 : value = 0x08; break;
}
if(value != 0x00) goto stop_poll;
*keypad_row_addr = 0x04;
for(i=0;i2000;i++);
value = value|(*keypad_col_addr & 0x0f);
*keypad_row_addr = 0x00;
switch(value) {
case 0x01 : value = 0x09; break;
case 0x02 : value = 0x0a; break;
case 0x04 : value = 0x0b; break;
case 0x08 : value = 0x0c; break;
}
if(value != 0x00) goto stop_poll;
*keypad_row_addr = 0x08;
for(i=0;i2000;i++);
value = value|(*keypad_col_addr & 0x0f);
*keypad_row_addr = 0x00;
switch(value) {
case 0x01 : value = 0x0d; break;
case 0x02 : value = 0x0e; break;
case 0x04 : value = 0x0f; break;
case 0x08 : value = 0x10; break;
}
stop_poll:
if(value0) {
printf( pressed key = %x\n,value-1);printf(- dotmatrix\n);

//while(value!=0) {
up_digit=0, size=0, cnt=0,quit=1;if(cnt == 10) {
cnt = 0;
up_digit++;
}
if(up_digit == 10) up_digit=0;
if(up_digit == 0) {
size = 4;
for(k=0;k4;k++) {
dispdata[k] = font_num[value*numsize+k];
//printf(dispdata[%d] : %x\n,k,dispdata[k]);
}
} else {
size = 8;
second_data = up_digit%10;
for(k=0;k4;k++) {
dispdata[k] = font_num[cnt*numsize+k];
dispdata[k+4] = font_num[second_data*numsize+k];
}
}
for(i=0;i35;i++) {
for(j=0;jsize;j++) {
if(j4) { // 1*x
*dot_row_addr = init_rowj;
*dot_col_addr = 0x8000|dispdata[j];
if(cnt10) usleep(3500);
else usleep(1000);
} else { // 10*x
*dot_row_addr = init_row2 (j-4);
*dot_col_addr = 0x8000|dispdata[j];
usleep(1000);
}
}
}

//}

//*buzzer_addr=0x1;
usleep(50000);
//*buzzer_addr=0x0;
*dot_col_addr = 0x0;
}
}
munmap(addr_fpga,4096);
close(fd);
return 0;
}

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