Imanol-Mikel Barba Sabariego / digital · Commits

Commit 131e732db87bbb413e2f1c4ac222b30f03e77887

Authored by Imanol-Mikel Barba Sabariego
1 parent 8a0a8236

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Showing 9 changed files with 218 additions and 24 deletions
common/auxiliar.c
  View file @131e732
... ... @@ -120,4 +120,44 @@ void normalize(char **inputs, int num_inputs)
120 120 }
121 121 }
122 122 }
  123 +}
  124 +
  125 +int bin2dec(char *bin)
  126 +{
  127 + int i;
  128 + int num = 0;
  129 + int length = strlen(bin);
  130 + int pos = length - 1;
  131 + char *aux = (char*) malloc(sizeof(char) * length);
  132 + strcpy(aux,bin);
  133 + normalize(&aux,1);
  134 + for(i = 0; i < length; i++)
  135 + {
  136 + if(aux[pos--])
  137 + {
  138 + num += pow(2,i);
  139 + }
  140 + }
  141 + free(aux);
  142 + return num;
  143 +}
  144 +
  145 +char* dec2bin(int dec, int length)
  146 +{
  147 + char *bin = (char*) malloc(sizeof(char) * length + 1);
  148 + int pos = length-1;
  149 + int i;
  150 + for(i = 0; i < length; i++)
  151 + {
  152 + if(dec & 0x1)
  153 + {
  154 + bin[pos--] = '1';
  155 + }
  156 + else
  157 + {
  158 + bin[pos--] = '0';
  159 + }
  160 + dec >>= 1;
  161 + }
  162 + return bin;
123 163 }
124 164 \ No newline at end of file
... ...
common/auxiliar.h
  View file @131e732
... ... @@ -13,3 +13,5 @@ void error();
13 13 void free_mem(char **inputs, int num_inputs);
14 14  
15 15 void normalize(char **inputs, int num_inputs);
  16 +int bin2dec(char *bin);
  17 +char* dec2bin(int dec, int length);
16 18 \ No newline at end of file
... ...
plexers/Makefile
  View file @131e732
1   -TARGETS = multiplexor
  1 +TARGETS = multiplexor demultiplexor encoder decoder
2 2  
3 3 .PHONY: all clean
4 4  
... ... @@ -9,3 +9,11 @@ clean:
9 9  
10 10 multiplexor:
11 11 gcc -I../common/ ../common/auxiliar.c multiplexor.c -o multiplexor -lm
  12 +
  13 +demultiplexor:
  14 + gcc -I../common/ ../common/auxiliar.c demultiplexor.c -o demultiplexor -lm
  15 +
  16 +encoder:
  17 + gcc -I../common/ ../common/auxiliar.c encoder.c -o encoder -lm
  18 +decoder:
  19 + gcc -I../common/ ../common/auxiliar.c decoder.c -o decoder -lm
... ...
plexers/decoder.c 0 → 100644
  View file @131e732
  1 +#include <stdio.h>
  2 +#include <string.h>
  3 +#include "auxiliar.h"
  4 +#include <math.h>
  5 +
  6 +int main(int argc, char **argv)
  7 +{
  8 + int i;
  9 + if(argc != 2)
  10 + {
  11 + error();
  12 + }
  13 + char *input = argv[1];
  14 + if(!strcmp(input,"error"))
  15 + {
  16 + error();
  17 + }
  18 + char **inputs = comma_separate(input);
  19 + if(inputs == NULL)
  20 + {
  21 + error();
  22 + }
  23 + int num_inputs = num_occurrences(input,',');
  24 + if(num_inputs != 1)
  25 + {
  26 + error();
  27 + }
  28 + int selected = bin2dec(inputs[0]);
  29 + int num_outputs = pow(2,strlen(inputs[0]));
  30 + for(i = 0; i < num_outputs; i++)
  31 + {
  32 + if(i == selected)
  33 + {
  34 + printf("1");
  35 + }
  36 + else
  37 + {
  38 + printf("0");
  39 + }
  40 + if(i != (num_outputs-1))
  41 + {
  42 + printf(",");
  43 + }
  44 + }
  45 + free_mem(inputs,num_inputs);
  46 + return 0;
  47 +}
... ...
plexers/demultiplexor.c 0 → 100644
  View file @131e732
  1 +#include <stdio.h>
  2 +#include <string.h>
  3 +#include "auxiliar.h"
  4 +#include <math.h>
  5 +
  6 +int main(int argc, char **argv)
  7 +{
  8 + int i;
  9 + int j;
  10 + if(argc != 2)
  11 + {
  12 + error();
  13 + }
  14 + char *input = argv[1];
  15 + if(!strcmp(input,"error"))
  16 + {
  17 + error();
  18 + }
  19 + char **inputs = comma_separate(input);
  20 + if(inputs == NULL)
  21 + {
  22 + error();
  23 + }
  24 + int num_inputs = num_occurrences(input,',');
  25 + if(num_inputs != 2)
  26 + {
  27 + error();
  28 + }
  29 + int input_length = strlen(inputs[0]);
  30 + int selected = bin2dec(inputs[1]);
  31 + int num_outputs = pow(2,strlen(inputs[1]));
  32 + for(i = 0; i < num_outputs; i++)
  33 + {
  34 + if(i == selected)
  35 + {
  36 + printf("%s",inputs[0]);
  37 + }
  38 + else
  39 + {
  40 + for(j = 0; j < input_length; j++)
  41 + {
  42 + printf("0");
  43 + }
  44 + }
  45 + if(i != (num_outputs-1))
  46 + {
  47 + printf(",");
  48 + }
  49 + }
  50 + free_mem(inputs,num_inputs);
  51 + return 0;
  52 +}
... ...
plexers/encoder.c 0 → 100644
  View file @131e732
  1 +#include <stdio.h>
  2 +#include <string.h>
  3 +#include "auxiliar.h"
  4 +#include <math.h>
  5 +
  6 +int check_length(char **inputs, uint8_t num_inputs)
  7 +{
  8 + int i;
  9 + for(i = 0; i < num_inputs; i++)
  10 + {
  11 + if(strlen(inputs[i]) != 1)
  12 + {
  13 + return -1;
  14 + }
  15 + }
  16 + int max_value = 1;
  17 + i = 0;
  18 + while(max_value < num_inputs)
  19 + {
  20 + max_value = pow(2,++i);
  21 + }
  22 + return i;
  23 +}
  24 +
  25 +int main(int argc, char **argv)
  26 +{
  27 + int i;
  28 + int pos;
  29 + if(argc != 2)
  30 + {
  31 + error();
  32 + }
  33 + char *input = argv[1];
  34 + if(!strcmp(input,"error"))
  35 + {
  36 + error();
  37 + }
  38 + char **inputs = comma_separate(input);
  39 + if(inputs == NULL)
  40 + {
  41 + error();
  42 + }
  43 + int num_inputs = num_occurrences(input,',');
  44 + pos = num_inputs - 1;
  45 + int sel_length = check_length(inputs,num_inputs);
  46 + if(sel_length == -1)
  47 + {
  48 + error();
  49 + }
  50 + int selected = -1;
  51 + for(i = 0; i < num_inputs; i++)
  52 + {
  53 + if(inputs[i][0] == '1')
  54 + {
  55 + selected = i;
  56 + break;
  57 + }
  58 + }
  59 + if(selected == -1)
  60 + {
  61 + error();
  62 + }
  63 + char *result = dec2bin(selected,sel_length);
  64 + printf("%s",result);
  65 + free(result);
  66 + free_mem(inputs,num_inputs);
  67 + return 0;
  68 +}
... ...
plexers/multiplexor deleted
View file @8a0a823
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plexers/multiplexor.c
  View file @131e732
... ... @@ -3,26 +3,6 @@
3 3 #include "auxiliar.h"
4 4 #include <math.h>
5 5  
6   -int bin2dec(char *bin)
7   -{
8   - int i;
9   - int num = 0;
10   - int length = strlen(bin);
11   - int pos = length - 1;
12   - char *aux = (char*) malloc(sizeof(char) * length);
13   - strcpy(aux,bin);
14   - normalize(&aux,1);
15   - for(i = 0; i < length; i++)
16   - {
17   - if(aux[pos--])
18   - {
19   - num += pow(2,i);
20   - }
21   - }
22   - free(aux);
23   - return num;
24   -}
25   -
26 6 int check_length(char **inputs, uint8_t num_inputs)
27 7 {
28 8 int i;
... ...
1   -demuxer
2   -coder
3   -decoder
4 1 bit selector
5 2  
6 3 adder
... ...