+ P5OUT&=~SS; //Drop !SS to begin transaction.
+ for(i=0;i<len;i++)
+ cmddata[i]=spitrans8(cmddata[i]);
+ P5OUT|=SS; //Raise !SS to end transaction.
+ txdata(app,verb,len);
+ break;
+ case SPI_JEDEC://Grab 3-byte JEDEC ID.
+ P5OUT&=~SS; //Drop !SS to begin transaction.
+ spitrans8(0x9f);
+ len=3;
+ for(i=0;i<len;i++)
+ cmddata[i]=spitrans8(cmddata[i]);
+ txdata(app,verb,len);
+ P5OUT|=SS; //Raise !SS to end transaction.
+ break;
+ case PEEK://Grab 128 bytes from an SPI Flash ROM
+ P5OUT&=~SS; //Drop !SS to begin transaction.
+ spitrans8(0x03);//Flash Read Command
+ len=3;//write 3 byte pointer
+ for(i=0;i<len;i++)
+ spitrans8(cmddata[i]);
+ len=0x80;//128 byte chunk
+ for(i=0;i<len;i++)
+ cmddata[i]=spitrans8(0);
+ P5OUT|=SS; //Raise !SS to end transaction.
+ txdata(app,verb,len);
+ break;
+ case POKE://Poke up bytes from an SPI Flash ROM.
+ spiflash_setstatus(0x02);
+ spiflash_wrten();
+
+ P5OUT&=~SS; //Drop !SS to begin transaction.
+ spitrans8(0x02); //Poke command.
+
+ //First three bytes are address, then data.
+ for(i=0;i<len;i++)
+ spitrans8(cmddata[i]);
+ P5OUT|=SS; //Raise !SS to end transaction.
+ while(spiflash_status()&0x01);//while busy
+ txdata(app,verb,len);
+ break;
+ case SPI_ERASE://Erase the SPI Flash ROM.
+ spiflash_wrten();
+ P5OUT&=~SS; //Drop !SS to begin transaction.
+ spitrans8(0xC7);//Chip Erase
+ P5OUT|=SS; //Raise !SS to end transaction.
+ txdata(app,verb,0);