button-shim:library:buttonshim:__init__.py.diff

--- button-shim/library/buttonshim/__init__.py.org	2018-06-27 20:54:18.719671000 +0000
+++ button-shim/library/buttonshim/__init__.py	2018-06-28 02:18:21.640175000 +0000
@@ -1,8 +1,11 @@
-import smbus
+import subprocess
+import sys
 import time
 from threading import Thread
 import atexit
 from colorsys import hsv_to_rgb
+i2c_cmd="sudo /home/mutoh/newi2c/pi2c -f /dev/iic1 -a 0x3f -d w -b "
+i2c_read="sudo /home/mutoh/newi2c/pi2c -f /dev/iic1 -a 0x3f -d r -c 1"
 
 try:
     import queue
@@ -121,9 +124,9 @@
         try:
             if led_data:
                 for chunk in _chunk(led_data, 32):
-                    _bus.write_i2c_block_data(ADDR, REG_OUTPUT, chunk)
+                    write_block_data(ADDR,REG_OUTPUT,chunk)
 
-            _states = _bus.read_byte_data(ADDR, REG_INPUT)
+            _states = _read_data(ADDR, REG_INPUT)
 
         except IOError as e:
             _errors += 1
@@ -177,17 +180,35 @@
     _running = False
     _t_poll.join()
 
+def write_block_data(addr,command,chunk):
+    data=""
+    c=0
+    for d in chunk:
+       data+="\\"+str(format(d,'o'))
+       c+=1
+    if(c>0):
+        cmd="printf \"" + data + "\" | " + i2c_cmd + "-c "+str(c)+" -o 0x" + str(command)
+        subprocess.check_output(cmd,shell=True)
+
+def _write_data(addr, command, value):
+    cmd="printf \"\\" + str(oct(value)) + "\" | " + i2c_cmd + "-c 1 -o 0x" + str(command)
+    subprocess.check_output(cmd,shell=True)
+
+def _read_data(addr, cmd):
+    cmd=i2c_read
+    d=subprocess.check_output(cmd.split(),stderr=subprocess.STDOUT)
+    return(int(d,16))
+
 def setup():
     global _t_poll, _bus
 
     if _bus is not None:
         return
 
-    _bus = smbus.SMBus(1)
-
-    _bus.write_byte_data(ADDR, REG_CONFIG, 0b00011111)
-    _bus.write_byte_data(ADDR, REG_POLARITY, 0b00000000)
-    _bus.write_byte_data(ADDR, REG_OUTPUT, 0b00000000)
+    _bus = 1
+    _write_data(ADDR, REG_CONFIG, 0b00011111)
+    _write_data(ADDR, REG_POLARITY, 0)
+    _write_data(ADDR, REG_OUTPUT, 0)
 
     _t_poll = Thread(target=_run)
     _t_poll.daemon = True