Reverting modularization.

[goodfet] / client / GoodFETSPI.py

diff --git a/client/GoodFETSPI.py b/client/GoodFETSPI.py
new file mode 100644 (file)
index 0000000..0020ec2
--- /dev/null
+++ b/client/GoodFETSPI.py
@@ -0,0 +1,130 @@
+#!/usr/bin/env python
+# GoodFET SPI and SPIFlash Client Library
+# 
+# (C) 2009 Travis Goodspeed <travis at radiantmachines.com>
+#
+# This code is being rewritten and refactored.  You've been warned!
+
+import sys, time, string, cStringIO, struct, glob, serial, os;
+
+from GoodFET import GoodFET;
+
+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",
+                        0x1F: "Atmel",
+                        0x01: "AMD/Spansion"
+                        };
+
+    JEDECdevices={0xFFFFFF: "MISSING",
+                  0xEF3015: "W25X16L",
+                  0xEF3014: "W25X80L",
+                  0xEF3013: "W25X40L",
+                  0xEF3012: "W25X20L",
+                  0xEF3011: "W25X10L",
+                  0xC22017: "MX25L6405D",
+                  0xC22016: "MX25L3205D",
+                  0xC22015: "MX25L1605D",
+                  0xC22014: "MX25L8005",
+                  0xC22013: "MX25L4005",
+                  0x204011: "M45PE10"
+                  };
+    
+    JEDECsizes={0x17: 0x800000,
+                0x16: 0x400000,
+                0x15: 0x200000,
+                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);
+        
+        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):
+        """Grab a few block from an SPI Flash ROM.  Block size is unknown"""
+        data=[(adr&0xFF0000)>>16,
+              (adr&0xFF00)>>8,
+              adr&0xFF];
+        
+        self.writecmd(0x01,0x02,3,data);
+        return self.data;
+    
+    def SPIpokebyte(self,adr,val):
+        self.SPIpokebytes(adr,[val]);
+    def SPIpokebytes(self,adr,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);
+    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);
+