Flash.h

00001 #ifndef _FLASH_H_MB_
00002 #define _FLASH_H_MB_
00003 
00004 #include "mbed.h"
00005 #include "IAP.h"
00006 
00007 // Data for NXP LPC1768 from data table which is explained in datasheet UM10360 page 626.
00008 #define MEM_SIZE 256
00009 #define TARGET_SECTOR 29
00010 
00011 /** This is simple library for storing data to flash memory and
00012  * reading it. This allows us to have retain data without having to have  
00013  * external flash chip. This class uses NXP LPC1768 internal flash memory
00014  * which give us 256B of flash size.
00015  * 
00016  * Author: TVZ Mechatronics Team
00017  *
00018  * Example of use:
00019  * @code
00020  * #include "mbed.h"
00021  * #include "Flash.h"
00022  *
00023  * BusOut display(LED1, LED2, LED3, LED4);
00024  * InterruptIn cntUp(p5);
00025  * Timer debounceUp;
00026  * Flash flash;
00027  *
00028  * char retainData[MEM_SIZE];
00029  * uint8_t counter;
00030  *
00031  * void countUp(void) {
00032  *    if (debounceUp.read_ms() > 500) {
00033  *        if (counter > 15)
00034  *            counter = 0;
00035  *        else
00036  *            counter++;
00037  *            
00038  *        retainData[0] = counter;
00039  *        flash.writeFlash(retainData);
00040  *        
00041  *        debounceUp.reset();
00042  *    }
00043  * }
00044  * 
00045  * int main() {
00046  *    cntUp.rise(&countUp);
00047  *    debounceUp.start();
00048  *
00049  *    flash.readFlash(retainData);
00050  *    counter = retainData[0];
00051  *
00052  *    while(1) {
00053  *        display = counter;
00054  *    }
00055  * }
00056  * @endcode
00057  */
00058 class Flash {
00059     public:
00060         /** Constructor */
00061         Flash();
00062         /** Function recevies data array wich is stored in flash memory */
00063         void writeFlash(char data[MEM_SIZE]);
00064         /** Function returning data to pointer to array of size 256 wich is stored in flash memory */
00065         void readFlash(char *data);
00066     private:
00067         IAP iap;
00068 };
00069 
00070 #endif