self.writecmd(0x01,0x02,3,data);
return self.data;
+
def SPIpokebyte(self,adr,val):
- self.SPIwriteenable();
- data=[0x02,
- (adr&0xFF0000)>>16,
+ self.SPIpokebytes(adr,[val]);
+ def SPIpokebytes(self,adr,data):
+ #self.SPIwriteenable();
+ adranddata=[(adr&0xFF0000)>>16,
(adr&0xFF00)>>8,
- adr&0xFF,
- val];
- self.SPItrans(data);
+ adr&0xFF
+ ]+data;
+ self.writecmd(0x01,0x03,
+ len(adranddata),adranddata);
+
def SPIchiperase(self):
"""Mass erase an SPI Flash ROM."""
- self.SPIwriteenable();
- #Chip Erase
- data=[0xC7];
- self.SPItrans(data);
+ self.writecmd(0x01,0x81,0,[]);
def SPIwriteenable(self):
"""SPI Flash Write Enable"""
data=[0x06];
//! Enable SPI writing
void spiflash_wrten(){
- 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.
+ 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.
+}
+
+//! Grab the SPI flash status byte.
+unsigned char spiflash_status(){
+ unsigned char c;
+ P5OUT&=~SS; //Drop !SS to begin transaction.
+ spitrans8(0x05);//GET STATUS
+ c=spitrans8(0xFF);
+ P5OUT|=SS; //Raise !SS to end transaction.
+ return c;
+}
+//! Grab the SPI flash status byte.
+void spiflash_setstatus(unsigned char c){
+ P5OUT&=~SS; //Drop !SS to begin transaction.
+ spitrans8(0x01);//SET STATUS
+ spitrans8(c);
+ P5OUT|=SS; //Raise !SS to end transaction.
+ return c;
}
//! Handles a monitor command.
P5OUT|=SS; //Raise !SS to end transaction.
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.
for(i=0;i<len;i++)
spitrans8(cmddata[i]);
P5OUT&=~SS; //Drop !SS to begin transaction.
+ while(spiflash_status()&0x01);//while busy
+ spiflash_wrten();
txdata(app,verb,len);
break;
case SPI_ERASE://Erase the SPI Flash ROM.