Added readout of loss of lock (LOL)

APSCT_CLK_I2C.py

@@ -26,15 +26,15 @@ else:
 DEBUG = False
 I2CBUSNR=5
 sleep_time = 0.15
-SET_PLL = True
+SET_PLL = False #True
 READ_LOCK = True
 READ_ALL = False
 CHECK_EEPROM = False
 PWR_RST = False #True #False
-READ_SENSOR = True
+READ_SENSOR = False #True
 READ_REGS = False #True
 
-CLK_FREQ = '200MHz' #'160MHz'
+CLK_FREQ = '160MHz'
 dev_i2c_eeprom = I2C(0x50)
 dev_i2c_eeprom.bus_nr = I2CBUSNR
 
@@ -151,11 +151,11 @@ def setup_pll(pll_frequency='200MHz') :
     if pll_frequency == '160MHz':
         print("Set PLL to 160 MHz mode")
         pll_address = PLL_160M
-        I2C_device.write_bytes(0x03, 0x0F)
+        I2C_device.write_bytes(0x03, 0x08)
     else:
         print("Set PLL to 200 MHz mode")
         pll_address=PLL_200M
-        I2C_device.write_bytes(0x03, 0xFF)
+        I2C_device.write_bytes(0x03, 0x28)
     Write_byte_PLL(0x03, 0x0C, pll_address)
     sleep(0.5)
     Write_byte_PLL(0x03, 0x08, pll_address)
@@ -290,6 +290,31 @@ def read_temp():
     else:
         print("Error reading tempeature")
 
+
+def read_lol(pll_frequency='200MHz'):
+    I2C_IO_device_A = I2C(0x20, BUSNR=I2CBUSNR)
+    I2C_IO_device_A.write_bytes(0x06, 0x2C)  # '0' is output
+    I2C_IO_device_A.write_bytes(0x07, 0x00)  # '0' is output
+    I2C_IO_device_B = I2C(0x21, BUSNR=I2CBUSNR)
+    I2C_IO_device_B.write_bytes(0x06, 0x2C)  # '0' is output
+    I2C_IO_device_B.write_bytes(0x07, 0xFF)  # '0' is output
+
+    ack, ret_value = I2C_IO_device_B.read_bytes(0x01, 1)
+    status_reg = int(ret_value,16)
+    if (pll_frequency=='200MHz') & ((status_reg & 0x10) > 0):
+        print("lost lock 200MHz")
+    if ((status_reg & 0x20) > 0) & (pll_frequency=='160MHz'):
+        print("lost lock 160MHz")
+    ack, ret_value = I2C_IO_device_A.read_bytes(0x01, 1)
+    old_reg = int(ret_value,16)
+    I2C_IO_device_A.write_bytes(0x03, (old_reg | 0x10))  # '0' is output
+    sleep(1)
+    I2C_IO_device_A.write_bytes(0x03, (old_reg & 0xEF))  # '0' is output
+
+
+
+
+
 #if READ_REGS:
 #    read_all_regs_pll(CLK_FREQ)
 
@@ -329,3 +354,4 @@ if READ_ALL:
 
 if READ_SENSOR:
     apsct_sensors()
+read_lol(CLK_FREQ)