Added EEPROM check + read from PLL after write to check write.

APSCT_CLK_I2C.py

@@ -23,6 +23,7 @@ if os.name =="posix":
 else:
     from I2C_serial import *
 
+DEBUG = True
 I2CBUSNR=3
 sleep_time = 0.05
 PWR_RST = False
@@ -32,6 +33,10 @@ INT_POWER_CYCLE = False
 RESET_PLL = False
 UPDATE_PLL = False
 READ_ALL = False
+CHECK_EEPROM = True
+
+dev_i2c_eeprom = I2C(0x50)
+dev_i2c_eeprom.bus_nr = I2CBUSNR
 
 CS = 6
 SCLK = 4
@@ -67,6 +72,11 @@ def Write_byte_PLL(reg_address, wr_data, ADDRESS=0x20):
 
     Write_data = 0x02 | (1 << CS) | (0 << SCLK) | (0 << SDI)
     I2C_device.write_bytes(0x02, Write_data)
+    if DEBUG:
+        read_bits = Read_byte_PLL(reg_address, ADDRESS)
+        stri = "Bits written {0} to register {1} read from PLL are {2}".format(wr_data, reg_address, read_bits)
+        print(stri)
+
 
 def Read_byte_PLL(reg_address, nof_bytes=1, ADDRESS=0x20 ):
     #
@@ -110,8 +120,14 @@ def setup_pll(pll_frequency='200MHz') :
     # Check PLL is in lock
     if pll_frequency == '160MHz':
         pll_address = PLL_160M
+        I2C_device = I2C(0x20, BUSNR=I2CBUSNR)
+        I2C_device.write_bytes(0x07, 0x00)
+        I2C_device.write_bytes(0x07, 0x08)
     else:
         pll_address=PLL_200M
+        I2C_device = I2C(0x20, BUSNR=I2CBUSNR)
+        I2C_device.write_bytes(0x07, 0x00)
+        I2C_device.write_bytes(0x07, 0xF8)
     Write_byte_PLL(0x05, 0x97, pll_address)
     Write_byte_PLL(0x06, 0x10, pll_address) # cp inv = 0xF4 other 0xE4
     Write_byte_PLL(0x07, 0x04, pll_address) # Divider R = 1 dec
@@ -138,6 +154,31 @@ def power(state):
     I2C_IO_device.write_bytes(0x02, bits_to_set)
 
 
+def read_eeprom():
+    #
+    # Read the EEPROM with the serial number etc.
+    #
+    ret_ack, ret_value = dev_i2c_eeprom.read_last_reg(1)
+    if ret_ack < 1:
+        print("no EEPROM found during read")
+        return False
+    else:
+        ret_ack, ret_value = dev_i2c_eeprom.read_bytes(0x00, 1)
+        return ret_value
+
+def wr_rd_eeprom( value=0x34):
+    #
+    # Write and Read the EEPROM to check functionality
+    #
+    if write_eeprom(value):
+        ret_value = self.read_eeprom()
+        stri = "Wrote to EEPROM: 0x{0:X}, Read from EEPROM: 0x{1} ".format(value, ret_value)
+        print(stri)
+    return True
+
+if CHECK_EEPROM :
+    wr_rd_eeprom()
+
 if PWR_RST :
     power(False)
     sleep(1)