Trung Nguyen
/
FINAL_PROJECT_4180
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Fork of
FINAL_PROJECT_4180
by 
Gedeon Nyengele
Revision 10:c3556e27e576, committed 2016-04-25
- Comitter:
- nyengele
- Date:
- Mon Apr 25 01:57:10 2016 +0000
- Parent:
- 9:48e93bcd1d5c
- Child:
- 11:1d7021c0739d
- Commit message:
- added some additional helpers for hash tables;
Changed in this revision
--- a/lib.cpp Mon Apr 25 01:39:32 2016 +0000
+++ b/lib.cpp Mon Apr 25 01:57:10 2016 +0000
@@ -202,3 +202,20 @@
}
return val;
}
+
+void add_to_table(HASH_RECORD *table, int ind, int user_id, int hash)
+{
+ HASH_RECORD rec = {user_id, hash};
+ table[ind] = rec;
+}
+
+bool contain_hash(HASH_RECORD *table, int table_size, int user_id, int hash)
+{
+ for (int i = 0; i < table_size; i++) {
+ HASH_RECORD h = table[i];
+ if (h.user_id == user_id && h.hash == hash) {
+ return false;
+ }
+ }
+ return false;
+}
--- a/lib.h Mon Apr 25 01:39:32 2016 +0000
+++ b/lib.h Mon Apr 25 01:57:10 2016 +0000
@@ -2,6 +2,11 @@
#include "FPScanner.h"
#include "uLCD_4DGL.h"
+typedef struct{
+ int user_id;
+ int hash;
+} HASH_RECORD;
+
int hashcode(const char *data, int size);
void read_mag_card(Serial *device, char *dest, int *size);
bool fp_enroll(FPScanner *fp);
@@ -13,4 +18,6 @@
void buzzer(PwmOut *speaker, int seconds);
void failure_display(uLCD_4DGL *lcd, char *text);
void success_display(uLCD_4DGL *lcd, char *text);
-int id_to_int(char *user_id, int size);
\ No newline at end of file
+int id_to_int(char *user_id, int size);
+void add_to_table(HASH_RECORD *table, int ind, int user_id, int hash);
+bool contain_hash(HASH_RECORD *table, int table_size, int user_id, int hash);
\ No newline at end of file
--- a/main.cpp Mon Apr 25 01:39:32 2016 +0000
+++ b/main.cpp Mon Apr 25 01:57:10 2016 +0000
@@ -11,6 +11,9 @@
SPI spi(p5, p6, p7); // MOSI, MISO, CLK
DigitalOut cs(p20); // Chip Select
+// hash table
+const int MAX_ENTRIES = 100;
+HASH_RECORD records[MAX_ENTRIES];
int main()
{