void FLASH_Update (FLADDR dest, char *src, unsigned int numbytes)
{
int numbytestmp=numbytes;
// Pause_Measure();
do{
if(numbytestmp>FLASH_PAGESIZE)numbytes=FLASH_PAGESIZE;
else numbytes=numbytestmp;
// 1. Erase <numbytes> starting from <dest>
FLASH_Clear (dest, numbytes);
// 2. Write <numbytes> from <src> to <dest>
FLASH_Write (dest, src, numbytes);
numbytestmp=numbytestmp-FLASH_PAGESIZE;
dest=dest+FLASH_PAGESIZE;
src=src+FLASH_PAGESIZE;
}while(numbytestmp>0);
// Restart_Measure() ;
}
void main (void)
{
unsigned char temp_byte = 0x00;
FLADDR start_address = 0x5FFE;
char test_write_buff[8] = "ABCDEFG";
char test_write_buff2[3] = "HIJ";
char test_read_buff[8] = {0};
char test_compare_buff[8] = "ABCDEFG";
unsigned char i;
bit error_flag = 0;
PCA0MD &= ~0x40; // WDTE = 0 (clear watchdog timer
// enable)
if ((RSTSRC & 0x02) != 0x02)
{
if ((RSTSRC & 0x40) == 0x40)
{
LED = 0;
while(1); // Last reset was caused by a Flash
// Error Device Reset
// LED is off and loop forever to
// indicate error
}
}
Oscillator_Init(); // Initialize the internal oscillator
// to 24.5 MHz
VDDMon_Init();
Port_Init();
LED = 1;
SFRPAGE = LEGACY_PAGE;
// Initially erase the test page of Flash
FLASH_PageErase(start_address);
//BEGIN TEST================================================================
// Check if able to Write and Read the Flash--------------------------------
FLASH_ByteWrite(start_address, 0xA5);
temp_byte = FLASH_ByteRead(start_address);
if (temp_byte != 0xA5)
{
error_flag = 1;
}
//--------------------------------------------------------------------------
// Check if able to Erase a page of the Flash-------------------------------
FLASH_PageErase(start_address);
temp_byte = FLASH_ByteRead(start_address);
if (temp_byte != 0xFF)
{
error_flag = 1;
}
//--------------------------------------------------------------------------
// Check if able to write and read a series of bytes------------------------
FLASH_Write(start_address, test_write_buff, sizeof(test_write_buff));
FLASH_Read(test_read_buff, start_address, sizeof(test_write_buff));
for (i = 0; i < sizeof(test_write_buff); i++)
{
if (test_read_buff[i] != test_write_buff[i])
{
error_flag = 1;
}
}
//--------------------------------------------------------------------------
// Check if able to Erase a few bytes---------------------------------------
FLASH_Clear(start_address, 2);
FLASH_Read(test_read_buff, start_address, sizeof(test_write_buff));
// Simulate the same changes to a data array for comparison
test_compare_buff[0] = 0xFF;
test_compare_buff[1] = 0xFF;
for (i = 0; i < sizeof(test_compare_buff); i++)
{
if (test_read_buff[i] != test_compare_buff[i])
{
error_flag = 1;
}
}
//--------------------------------------------------------------------------
// Check if able to "update" (erase then re-write) a few bytes--------------
FLASH_Update (start_address, test_write_buff2, 3);
FLASH_Read(test_read_buff, start_address, sizeof(test_write_buff));
// Simulate the same changes to a data array for comparison
test_compare_buff[0] = test_write_buff2[0];
test_compare_buff[1] = test_write_buff2[1];
test_compare_buff[2] = test_write_buff2[2];
for (i = 0; i < sizeof(test_compare_buff); i++)
{
if (test_read_buff[i] != test_compare_buff[i])
{
error_flag = 1;
}
}
//--------------------------------------------------------------------------
// Check if able to copy data in the Flash----------------------------------
FLASH_Copy (start_address+sizeof(test_write_buff), start_address,
sizeof(test_write_buff));
FLASH_Read(test_read_buff, start_address+sizeof(test_write_buff),
sizeof(test_read_buff));
for (i = 0; i < sizeof(test_write_buff); i++)
{
if (test_read_buff[i] != test_compare_buff[i])
{
error_flag = 1;
}
}
//--------------------------------------------------------------------------
// FLASH test routines------------------------------------------------------
FLASH_Fill (start_address+sizeof(test_write_buff)*2, sizeof(test_write_buff),
0x5A);
FLASH_Read(test_read_buff, start_address+sizeof(test_write_buff)*2,
sizeof(test_write_buff));
for (i = 0; i < sizeof(test_write_buff); i++)
{
if (test_read_buff[i] != 0x5A)
{
error_flag = 1;
}
}
//--------------------------------------------------------------------------
//END OF TEST===============================================================
while (1) // Loop forever
{
// Blink LED to indicate success
if (error_flag == 0)
{
LED = ~LED;
Timer0_Delay_ms (100);
}
else
{
LED = 0;
}
}
}