Modified the scripts to run on Raspberry Pi.

Script will check if it is run on a PI, in that case a different I2C serial library is used.

rd_unb2c.py

@@ -59,24 +59,44 @@ def front_led(value=0xFF):
             sleep(0.2)
             front.write_bytes(0x01, 0xf)
 
-def read_pol(i2c_addr):
-    LOC_PWR = I2C(i2c_addr)
-    LOC_PWR.bus = I2CBUSNR
-    ret_ack, ret_value = LOC_PWR.read_bytes(0)
+def read_pol(node_nr, i2c_addr):
+    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("no device found")
+        print("Main I2C switch not found")
     else:
-        pr_stri = "Found device at address 0x{:02x}".format(LOC_PWR.I2C_Address)
-        print(pr_stri)
-        ret_ack,ret_value = LOC_PWR.read_bytes(LP_VOUT, 2)
-        vout = calc_lin_3bytes(ret_value, vout_mod)
-        print("read = ", vout_mod)
-        ret_ack,ret_value = LOC_PWR.read_bytes(LP_IOUT, 2)
-        iout = calc_lin_2bytes(ret_value)
-        print("Output Current :",iout)
-        ret_ack,ret_value = LOC_PWR.read_bytes(LP_temp, 2)
-        temp = calc_lin_2bytes(ret_value)
-        print("temperature :",temp)
+        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")
+        else:
+            LOC_PWR = I2C(i2c_addr)
+            LOC_PWR.bus = I2CBUSNR
+            ret_ack, ret_value = LOC_PWR.read_bytes(0)
+            if ret_ack < 1:
+                print("no device found")
+            else:
+    #            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, 2)
+    #            vout_mod = int(vout_mod,16)
+    #            vout = calc_lin_3bytes(ret_value, vout_mod)
+                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)
+                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)
+                print(stri)
 
 def read_ddr(node_nr = 0, module=0):
     main_switch = I2C(0x71)
@@ -140,10 +160,9 @@ 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 0:
+if 1:
     rw_eeprom(0xCD)
     front_led()
-else:
     for node_cnt in range(4):
         for module_cnt in range(2):
             read_ddr(node_nr=node_cnt,module=module_cnt)
@@ -151,4 +170,4 @@ else:
         for qsfp_cnt in range(6):
             read_qsfp(node_nr = node_cnt, module=qsfp_cnt)
     for node_cnt in range(4):
-        read_pol(LOC_POWER_CORE)
+        read_pol(node_cnt, LOC_POWER_CORE)