Hi
I wrote a little test program to test the Flash Memory Module "program sector command".
To test it, I use a K20 tower board. The K20 tower board has got 256kByte of P-Flash, 32kByte FlexNVM (D-Flash) and 2kByte FlexRam.
The sector size is:
2kByte for P-Flash
1kByte for D-Flash
The program sector command allows to use half the FlexRam to program Flash memory. One just fills the under half of the flexRam and launches the progam sector command.
Thats what I'm doing in the following code. I fill the under half of the FlexRam (1kByte) with a test pattern and launch the command. The strange thing is, that the last byte keeps unprogrammed. Only 1023 byte are programmed and the last one keeps erased (0xFF).
This is not a real problem but i'm interessted if i'm doing a misstake or if it is a bug. Maybe someone can help me :smileyhappy:
| uint8* pFlexNVM = (uint8*) 0x10000000; | | // Pointer to the start address of the D-Flash |
| uint32* pFlexRam =(uint32*) 0x14000000; | | // Pointer to the start address of the FlexRam |
/* Fill the under half (2kByte/2 = 1kByte) of the FlexRam with a test pattern */
for(i=0;i<256;i++){
| pFlexRam[i] = 0x01020304; |
}
/* Erase Flash Sector Command */
| FTFL->FCCOB0 = 0x09; | | // Erase sector command |
| FTFL->FCCOB1 = 0x80; | | // Address to erase (0x1000 0000) |
FTFL->FCCOB2 = 0x00;
FTFL->FCCOB3 = 0x00;
while((FTFL->FSTAT & FTFL_FSTAT_CCIF_MASK)==0){}
| FTFL->FSTAT &= 0xFF; | | // Start erasing |
while((FTFL->FSTAT & FTFL_FSTAT_CCIF_MASK)==0){}
| ftfl_check(); | | | | // Prints information if an error occured |
| | |
/* Program Section Command */
| FTFL->FCCOB0 = 0x0B; | | // Program section command |
| FTFL->FCCOB1 = 0x80; | | // Address to program (0x1000 0000) |
FTFL->FCCOB2 = 0x00;
| FTFL->FCCOB3 = 0x00; | | |
| FTFL->FCCOB4 = 0x00; | | // Nummber of longwords to program (0x00FF) |
FTFL->FCCOB5 = 0xff;
while((FTFL->FSTAT & FTFL_FSTAT_CCIF_MASK)==0){}
FTFL->FSTAT &= 0xFF;
while((FTFL->FSTAT & FTFL_FSTAT_CCIF_MASK)==0){}
| ftfl_check(); | | | | // Prints information if an error occured |
| | | | |
| printl("Vaulue at 0x1000 0000: % \r\n",*pFlexNVM); | // Result = 1 |
| printl("Vaulue at 0x1000 0001: % \r\n",pFlexNVM[1]); | // Result = 2 |
| printl("Vaulue at 0x1000 03FC: % \r\n",pFlexNVM[1020]); | // Result = 255 |
| printl("Vaulue at 0x1000 03FD: % \r\n",pFlexNVM[1021]); | // Result = 255 |
