-class GoodFETSPI(GoodFET):
- def SPIsetup(self):
- """Move the FET into the SPI application."""
- self.writecmd(0x01,0x10,0,self.data); #SPI/SETUP
-
- def SPItrans8(self,byte):
- """Read and write 8 bits by SPI."""
- data=self.SPItrans([byte]);
- return ord(data[0]);
-
- def SPItrans(self,data):
- """Exchange data by SPI."""
- self.data=data;
- self.writecmd(0x01,0x00,len(data),data);
- return self.data;
-
-class GoodFETSPIFlash(GoodFETSPI):
- JEDECmanufacturers={0xFF: "MISSING",
- 0xEF: "Winbond",
- 0xC2: "MXIC",
- 0x20: "Numonyx/ST"
- };
-
- JEDECdevices={0xFFFFFF: "MISSING",
- 0xEF3014: "W25X80L",
- 0xEF3013: "W25X40L",
- 0xEF3012: "W25X20L",
- 0xEF3011: "W25X10L",
- 0xC22014: "MX25L8005",
- 0xC22013: "MX25L4005",
- 0x204011: "M45PE10"
- };
- JEDECsizes={0x14: 0x100000,
- 0x13: 0x080000,
- 0x12: 0x040000,
- 0x11: 0x020000}
- JEDECsize=0;
-
- def SPIjedec(self):
- """Grab an SPI Flash ROM's JEDEC bytes."""
- data=[0x9f, 0, 0, 0];
- data=self.SPItrans(data);
- #print "Manufacturer: %02x\nType: %02x\nCapacity: %02x" % (ord(data[1]),ord(data[2]),ord(data[3]));
- self.JEDECmanufacturer=ord(data[1]);
- self.JEDECtype=ord(data[2]);
- self.JEDECcapacity=ord(data[3]);
- self.JEDECsize=self.JEDECsizes.get(self.JEDECcapacity);
- if self.JEDECsize==None:
- self.JEDECsize=0;
- self.JEDECdevice=(ord(data[1])<<16)+(ord(data[2])<<8)+ord(data[3]);
- return data;
- def SPIpeek(self,adr):
- """Grab a byte from an SPI Flash ROM."""
- data=[0x03,
- (adr&0xFF0000)>>16,
- (adr&0xFF00)>>8,
- adr&0xFF,
- 0];
- self.SPItrans(data);
- return ord(self.data[4]);
- def SPIpeekblock(self,adr,blocks=1):
- """Grab a few block from an SPI Flash ROM. Block size is unknown"""
- data=[(adr&0xFF0000)>>16,
- (adr&0xFF00)>>8,
- adr&0xFF,
- blocks];
-
- self.writecmd(0x01,0x02,4,data,blocks);
- return self.data;
-
- def SPIpokebyte(self,adr,val):
- self.SPIpokebytes(adr,[val]);
- def SPIpokebytes(self,adr,data):
- #self.SPIwriteenable();
- adranddata=[(adr&0xFF0000)>>16,
- (adr&0xFF00)>>8,
- adr&0xFF
- ]+data;
- self.writecmd(0x01,0x03,
- len(adranddata),adranddata);
-
- def SPIchiperase(self):
- """Mass erase an SPI Flash ROM."""
- self.writecmd(0x01,0x81,0,[]);
- def SPIwriteenable(self):
- """SPI Flash Write Enable"""
- data=[0x06];
- self.SPItrans(data);
-
- def SPIjedecmanstr(self):
- """Grab the JEDEC manufacturer string. Call after SPIjedec()."""
- man=self.JEDECmanufacturers.get(self.JEDECmanufacturer)
- if man==0:
- man="UNKNOWN";
- return man;
-
- def SPIjedecstr(self):
- """Grab the JEDEC manufacturer string. Call after SPIjedec()."""
- man=self.JEDECmanufacturers.get(self.JEDECmanufacturer);
- if man==0:
- man="UNKNOWN";
- device=self.JEDECdevices.get(self.JEDECdevice);
- if device==0:
- device="???"
- return "%s %s" % (man,device);
-