This is a RFID based attendance system. The current program is only for two users but can be easily scaled for more users. Apart from FRDM-K64F board, we have MFRC522, Nokia 5110 LCD and SD card as external hardware. Each time a legitimate card is flashed the name of the person will be displayed on the LCD and his information will be stored in SD card if it's already not there. I have used existing libraries for all the harware. Here is the list. MFRC522 - By Martin Olejar SDFileSystem - By Andrew Lindsay NOKIA_5110 - By Chris Yan.
Dependencies: MFRC522 NOKIA_5110 SDFileSystem mbed
Fork of FTF2014_lab4 by
main.cpp
- Committer:
- Kojto
- Date:
- 2014-04-03
- Revision:
- 0:a83db87be46c
- Child:
- 3:ade6c26d1b90
File content as of revision 0:a83db87be46c:
#include "mbed.h" #include "SDFileSystem.h" SDFileSystem sd(PTE3, PTE1, PTE2, PTE4, "sd"); // MOSI, MISO, SCK, CS Serial pc(USBTX, USBRX); FILE *fp; char buffer[1024]; int main() { pc.printf("Initializing \n"); wait(2); fp = fopen("/sd/hello.txt", "r"); if (fp != NULL) { fclose(fp); remove("/sd/hello.txt"); pc.printf("Remove an existing file with the same name \n"); } printf("\nWriting data to the sd card \n"); fp = fopen("/sd/hello.txt", "w"); if (fp == NULL) { pc.printf("Unable to write the file \n"); } else { fprintf(fp, "mbed SDCard application!"); fclose(fp); pc.printf("File successfully written! \n"); } printf("\nReading data from the SD card. \n"); fp = fopen("/sd/hello.txt", "r"); if (fp != NULL) { int size = fread(buffer, sizeof(char), 1024, fp); printf("Number of data read: %d, text from hello.txt file: %s \n", size, buffer); fclose(fp); } printf("End of Lab 4. \n"); }