JEDECmanufacturers={0xFF: "MISSING",
0xEF: "Winbond",
0xC2: "MXIC",
- 0x20: "Numonyx/ST"
+ 0x20: "Numonyx/ST",
+ 0x1F: "Atmel",
+ 0x01: "AMD/Spansion"
};
JEDECdevices={0xFFFFFF: "MISSING",
"""Grab an SPI Flash ROM's JEDEC bytes."""
data=[0x9f, 0, 0, 0];
data=self.SPItrans(data);
+
self.JEDECmanufacturer=ord(data[1]);
self.JEDECtype=ord(data[2]);
self.JEDECcapacity=ord(data[3]);
0];
self.SPItrans(data);
return ord(self.data[4]);
- def SPIpeekblock(self,adr,blocks=1):
+ def SPIpeekblock(self,adr):
"""Grab a few block from an SPI Flash ROM. Block size is unknown"""
data=[(adr&0xFF0000)>>16,
(adr&0xFF00)>>8,
- adr&0xFF,
- blocks];
+ adr&0xFF];
- self.writecmd(0x01,0x02,4,data,blocks);
+ self.writecmd(0x01,0x02,3,data);
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;
+ #Used to be 24 bits, BE, not 32 bits, LE.
+ adranddata=[adr&0xFF,
+ (adr&0xFF00)>>8,
+ (adr&0xFF0000)>>16,
+ 0, #MSB
+ ]+data;
+ #print "%06x: poking %i bytes" % (adr,len(data));
self.writecmd(0x01,0x03,
len(adranddata),adranddata);
def SPIchiperase(self):
"""Mass erase an SPI Flash ROM."""
- self.writecmd(0x01,0x81,0,[]);
+ self.writecmd(0x01,0x81);
def SPIwriteenable(self):
"""SPI Flash Write Enable"""
data=[0x06];