dio: improve indentation & add 32B limits to eeprom write

e65079b1 · Benoit Rat · 14ebadf0 · e65079b1
Commit e65079b1 authored Apr 08, 2014 by Benoit Rat
Hide whitespace changes
Inline Side-by-side

Showing with 34 additions and 32 deletions

eeprom_24aa64.py test/fmcdio5chttla/python/eeprom_24aa64.py +34 -32

No files found.
--- a/test/fmcdio5chttla/python/eeprom_24aa64.py
+++ b/test/fmcdio5chttla/python/eeprom_24aa64.py
 #!/usr/bin/python

-import sys
-import rr
-import time
-import i2c
+from i2c import *


 class C24AA64:
-	def __init__(self, i2c, i2c_addr):
-		self.i2c = i2c
-		self.i2c_addr = i2c_addr
+    def __init__(self, i2c, i2c_addr):
+        self.i2c = i2c
+        self.i2c_addr = i2c_addr

-	def wr_data(self, mem_addr, data):
-		self.i2c.start(self.i2c_addr, True)
-                self.i2c.write((mem_addr >> 8), False)
-                self.i2c.write((mem_addr & 0xFF), False)
-                #print('24AA64:write: data lenght=%d')%(len(data))
-		for i in range(len(data)-1):
-                        #print('24AA64:write: i=%d')%(i)
-                        self.i2c.write(data[i],False)
+    def wr_data(self, mem_addr, data):
+        if len(data) > 32:
+            raise I2CDeviceOperationError("Maximum sequence write size is 32 byte!")
+        self.i2c.start(self.i2c_addr, True)
+        self.i2c.write((mem_addr >> 8), False)
+        self.i2c.write((mem_addr & 0xFF), False)
+        #print('24AA64:write: data lenght=%d')%(len(data))
+        for i in range(len(data)-1):
+            #print('24AA64:write: i=%d')%(i)
+            self.i2c.write(data[i],False)
+            if len(data) > 1:
                i += 1
-                #print('24AA64:write:last i=%d')%(i)
-                self.i2c.write(data[i],True)
+            else:
+                i = 0
+            #print('24AA64:write:last i=%d')%(i)
+        self.i2c.write(data[i],True)
+        return 0

-	def rd_data(self, mem_addr, size):
-		self.i2c.start(self.i2c_addr, True)
-		self.i2c.write((mem_addr >> 8), False)
-                self.i2c.write((mem_addr & 0xFF), False)
-		self.i2c.start(self.i2c_addr, False)
-                data = []
-                #print('24AA64:read: data lenght=%d')%(size)
-                i=0
-		for i in range(size-1):
-                        data.append(self.i2c.read(False))
-                        #print('24AA64:read: i=%d')%(i)
-                i += 1
-                #print('24AA64:read:last i=%d')%(i)
-                data.append(self.i2c.read(True))
-		return data;
+    def rd_data(self, mem_addr, size):
+        self.i2c.start(self.i2c_addr, True)
+        self.i2c.write((mem_addr >> 8), False)
+        self.i2c.write((mem_addr & 0xFF), False)
+        self.i2c.start(self.i2c_addr, False)
+        data = []
+        #print('24AA64:read: data lenght=%d')%(size)
+        for i in range(size-1):
+            data.append(self.i2c.read(False))
+            #print('24AA64:read: i=%d')%(i)
+
+        #print('24AA64:read:last i=%d')%(i)
+        data.append(self.i2c.read(True))
+        return data;