//! Enable SPI writing
void spiflash_wrten(){
SETSS;
+ /*
P5OUT&=~SS; //Drop !SS to begin transaction.
spitrans8(0x04);//Write Disable
P5OUT|=SS; //Raise !SS to end transaction.
+ */
P5OUT&=~SS; //Drop !SS to begin transaction.
spitrans8(0x06);//Write Enable
P5OUT|=SS; //Raise !SS to end transaction.
//! Peek some blocks.
void spiflash_peek(unsigned char app,
unsigned char verb,
- unsigned char len){
- register char blocks=(len>3?cmddata[3]:1);
- unsigned char i;
-
+ unsigned long len){
+ unsigned int i;
P5OUT&=~SS; //Drop !SS to begin transaction.
spitrans8(0x03);//Flash Read Command
len=3;//write 3 byte pointer
spitrans8(cmddata[i]);
//Send reply header
- len=0x80;//128 byte chunk, repeated for each block
- serial_tx(app);
- serial_tx(verb);
- serial_tx(len); //multiplied by block count.
+ len=0x1000;
+ txhead(app,verb,len);
+
+ while(len--)
+ serial_tx(spitrans8(0));
- while(blocks--){
- for(i=0;i<len;i++)
- serial_tx(spitrans8(0));
-
- /* old fashioned
- for(i=0;i<len;i++)
- cmddata[i]=spitrans8(0);
- txdata(app,verb,len);
- */
- }
P5OUT|=SS; //Raise !SS to end transaction.
}
//! Handles a monitor command.
void spihandle(unsigned char app,
unsigned char verb,
- unsigned char len){
- unsigned char i;
+ unsigned long len){
+ unsigned long i;
//Raise !SS to end transaction, just in case we forgot.
P5OUT|=SS;
case SPI_JEDEC://Grab 3-byte JEDEC ID.
P5OUT&=~SS; //Drop !SS to begin transaction.
spitrans8(0x9f);
- len=3;
+ len=3; //Length is variable in some chips, 3 minimum.
for(i=0;i<len;i++)
cmddata[i]=spitrans8(cmddata[i]);
txdata(app,verb,len);
P5OUT|=SS; //Raise !SS to end transaction.
-
while(spiflash_status()&0x01)
P1OUT^=1;
spitrans8(0xC7);//Chip Erase
P5OUT|=SS; //Raise !SS to end transaction.
-
+
while(spiflash_status()&0x01)//while busy
P1OUT^=1;
P1OUT&=~1;