rb_unb2c.py tested on the pi

I2C_serial_pi.py

@@ -22,7 +22,7 @@ import smbus
 import sys
 from time import *
 
-DEBUG = True
+DEBUG = False #True
 
 
 class I2C:
@@ -39,6 +39,7 @@ class I2C:
             for cnt in range(bytes_to_read):
                 ret_value += (hex(rd_value[cnt])[2:])
             ret_ack = 1
+ #           sleep(0.2)
         except IOError, err:
             ret_ack = 0
             ret_value = 0
@@ -54,6 +55,7 @@ class I2C:
             try:
                 ret_value.append(bus.read_byte(self.I2C_Address))
                 ret_ack = 1
+ #               sleep(0.2)
             except IOError, err:
                 ret_ack = 0
                 ret_value = 0
@@ -66,7 +68,7 @@ class I2C:
         try:
             bus.write_i2c_block_data(self.I2C_Address, register, [data])
             ret_ack = 1
-            sleep(0.2)
+            sleep(0.3)
         except IOError, err:
             ret_ack = 0
             ret_value = 0
@@ -77,9 +79,9 @@ class I2C:
     def write_pointer(self, register):
         bus = smbus.SMBus(self.bus_nr)
         try:
-            ret_value = bus.read_i2c_block_data(self.I2C_Address, register, 1)
+            ret_value = bus.read_i2c_block_data(self.I2C_Address, register, register)
             ret_ack = 1
-            sleep(0.2)
+            sleep(0.3)
         except IOError, err:
             ret_ack = 0
             ret_value = 0

rd_unb2c.py

@@ -34,7 +34,7 @@ def rw_eeprom(value=0xAB):
         print(pr_stri)
         I2C_eeprom.write_bytes(0x00, value)
         ret_ack, ret_value = I2C_eeprom.read_bytes(0x00, 1)
-        stri = "Wrote to EEPROM: {0}, Read from EEPROM: {1} ".format(value, ret_value)
+        stri = "Wrote to EEPROM: 0x{0:X}, Read from EEPROM: 0x{1} ".format(value, ret_value)
         print(stri)
 
 def front_led(value=0xFF):
@@ -60,18 +60,28 @@ def front_led(value=0xFF):
             front.write_bytes(0x01, 0xf)
 
 def read_pol(node_nr, i2c_addr):
+    if node_nr >= 0:
         main_switch = I2C(0x71)
         main_switch.bus = I2CBUSNR
         ret_ack = main_switch.write_bytes(0x0, 0x01<<node_nr) #select Node
         if ret_ack < 1:
             print("Main I2C switch not found")
+            return False
         else:
             node_switch = I2C(0x72)
             node_switch.bus = I2CBUSNR
             ret_ack = node_switch.write_bytes(0x0, 0x20) #select DDR4
             if ret_ack < 1:
                 print("Node I2C switch not found")
+                return False
     else:
+        print("Central POL")
+        main_switch = I2C(0x71)
+        main_switch.bus = I2CBUSNR
+        ret_ack = main_switch.write_bytes(0x0, 0x10) #select Pol
+        if ret_ack < 1:
+            print("Main I2C switch not found")
+            return False
     LOC_PWR = I2C(i2c_addr)
     LOC_PWR.bus = I2CBUSNR
     ret_ack, ret_value = LOC_PWR.read_bytes(0)
@@ -81,28 +91,27 @@ def read_pol(node_nr, i2c_addr):
     #   pr_stri = "Found device at address 0x{:02x}".format(LOC_PWR.I2C_Address)
     #   print(pr_stri)
         ret_ack, vout_mod = LOC_PWR.read_bytes(LP_VOUT_MODE, 1)
-                ret_ack, ret_value = LOC_PWR.read_bytes(LP_VOUT, 2)
+        ret_ack, raw_value = LOC_PWR.read_bytes(LP_VOUT, 2)
         vout_mod = int(vout_mod,16)
         ret_value = []
         ret_value.append(int(raw_value[:2], 16))
         ret_value.append(int(raw_value[2:], 16))
-                vout = calc_lin_3bytes(ret_value, vout_mod)
-                stri = "Output Current :{0:2.2f} A ".format(iout)
-#                print(stri)
+        vout = calc_lin_3bytes(ret_value, [vout_mod])
+	stri = "Output voltage :{0: <5.2f} V ".format(vout)
         ret_ack, raw_value = LOC_PWR.read_bytes(LP_IOUT, 2)
         ret_value=[]
         ret_value.append(int(raw_value[:2],16))
         ret_value.append(int(raw_value[2:],16))
         iout = calc_lin_2bytes(ret_value)
-                stri += "Output Current :{0:2.2f} A ".format(iout)
-#                print(stri)
+        stri += "Output Current :{0: <5.2f} A ".format(iout)
         ret_ack,raw_value = LOC_PWR.read_bytes(LP_temp, 2)
         ret_value=[]
         ret_value.append(int(raw_value[:2],16))
         ret_value.append(int(raw_value[2:],16))
         temp = calc_lin_2bytes(ret_value)
-                stri=+ "temperature :{0:2.2f} Deg C".format(temp)
+        stri += "temperature :{0: <5.2f} Deg C".format(temp)
         print(stri)
+    return True
  
 def read_ddr(node_nr = 0, module=0):
     main_switch = I2C(0x71)
@@ -166,7 +175,7 @@ def read_qsfp(node_nr = 0, module=0):
                 stri =  "Voltage QSFP in slot {0} node  {1} is {2:3.2f} V".format(module, node_nr, Power_in_mod)
                 print(stri)
 
-if 1:
+if 0:
     rw_eeprom(0xCD)
     front_led()
     for node_cnt in range(4):
@@ -175,5 +184,7 @@ if 1:
     for node_cnt in range(4):
         for qsfp_cnt in range(6):
             read_qsfp(node_nr = node_cnt, module=qsfp_cnt)
+else:
     for node_cnt in range(4):
         read_pol(node_cnt, LOC_POWER_CORE)
+read_pol(-1,0x01)