From aaab3915d4f12955c23af587347fe5f2b5c3c3ce Mon Sep 17 00:00:00 2001
From: Gijs Schoonderbeek <schoonderbeek@astron.nl>
Date: Fri, 6 Jan 2023 09:57:22 +0100
Subject: [PATCH] Make ready for testing APSCT
---
apsct_lib.py | 357 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 357 insertions(+)
create mode 100644 apsct_lib.py
diff --git a/apsct_lib.py b/apsct_lib.py
new file mode 100644
index 0000000..99309c6
--- /dev/null
+++ b/apsct_lib.py
@@ -0,0 +1,357 @@
+'''
+Copyright 2021 Stichting Nederlandse Wetenschappelijk Onderzoek Instituten,
+ASTRON Netherlands Institute for Radio Astronomy
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+ http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+Set APSCT_CLK
+
+'''
+import sys
+import time
+sys.path.insert(0,'.')
+import os
+if os.name =="posix":
+ from I2C_serial_pi2 import *
+else:
+ from I2C_serial import *
+
+DEBUG = False
+I2CBUSNR=5
+sleep_time = 0.15
+SET_PLL = True
+READ_LOCK = True
+READ_ALL = False
+CHECK_EEPROM = False
+PWR_RST = False #True #False
+READ_SENSOR = False #True
+READ_REGS = False #True
+
+CLK_FREQ = '200MHz'
+dev_i2c_eeprom = I2C(0x50)
+dev_i2c_eeprom.bus_nr = I2CBUSNR
+
+CS = 6
+SCLK = 4
+SDO = 5
+SDI = 7
+
+PLL_200M = 0x20
+PLL_160M = 0x21
+
+def Write_byte_PLL(reg_address, wr_data, ADDRESS=0x20):
+ #
+ # Write Byte to the ADC
+ #
+ I2C_device = I2C(ADDRESS, BUSNR=I2CBUSNR)
+ PLL_rw = 0x00 # 0 for write, 1 for read
+ stri = "Write to address : 0x{1:{fill}2x} value 0x{0:{fill}2x}".format(wr_data, reg_address, fill='0')
+ print(stri)
+ I2C_device.write_bytes(0x06, 0x2C)
+ if DEBUG:
+ rd_bytes = I2C_device.read_bytes(0x06, 1)
+ stri = "IO expander wrote 0x{0:x}, read 0x{1}".format(0x2C, rd_bytes[1])
+ print(stri)
+ data = (reg_address << 9) + (PLL_rw << 8) + wr_data
+ bit_array = "{0:{fill}16b}".format(data, fill='0')
+ I2C_device.write_bytes(0x02, 0x02 | (0x1 << CS))
+ for bit in bit_array:
+ for clk in range(2):
+ Write_data = 0x02 | (0 << CS) | (clk << SCLK) | (int(bit) << SDI)
+ I2C_device.write_bytes(0x02, Write_data)
+ for clk in range(2):
+ Write_data = 0x02 | (0 << CS) | (clk << SCLK)
+ I2C_device.write_bytes(0x02, Write_data)
+ for clk in range(2):
+ Write_data = 0x02 | (1 << CS) | (clk << SCLK)
+ I2C_device.write_bytes(0x02, Write_data)
+
+ 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, nof_bytes=1, ADDRESS=ADDRESS)
+# stri = "Bits written 0x{0:x} to register 0x{1:x} 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 ):
+ #
+ # Read Byte from the ADC
+ #
+ I2C_device = I2C(ADDRESS, BUSNR=I2CBUSNR)
+ PLL_rw = 0x01 # 0 for write, 1 for read
+
+ I2C_device.write_bytes(0x06, 0x2C)
+ data = ( reg_address << 7 ) + PLL_rw
+
+ bit_array = "{0:{fill}8b}".format(data, fill='0')
+ for bit in bit_array:
+ for clk in range(2):
+ Write_data = 0x02 | (0 << CS) | (clk << SCLK) | ( int(bit) << SDI)
+ I2C_device.write_bytes(0x02, Write_data)
+ sleep(sleep_time)
+
+# print("read byte")
+ read_bit = ''
+ for cnt in range(8*nof_bytes):
+ for clk in [0, 1]: # Read after rizing edge
+ Write_data = 0x02 | (clk << SCLK) | ( int(bit) << SDI )
+ I2C_device.write_bytes(0x02, Write_data)
+ ret_ack, ret_value = I2C_device.read_bytes(0x00, 1)
+# stri= "ret_value = {}".format(int(ret_value,16))
+# print(stri)
+ if ret_ack:
+ read_bit += str((int(ret_value, 16) >> SDO) & 0x01)
+ else:
+ print("ACK nok")
+ Write_data = 0x02 | (1 << CS) | (0 << SCLK) | (0 << SDI)
+ I2C_device.write_bytes(0x02, Write_data)
+ stri = "Read back at address 0x{0:{fill}2x} result : 0x{1:{fill}2x} ".format(reg_address, int(read_bit, 2), fill='0')
+ print(stri)
+ return read_bit;
+
+def read_all_regs_pll(pll_frequency='200MHz') :
+ I2C_device = I2C(0x20, BUSNR=I2CBUSNR) #clock selection
+ I2C_device.write_bytes(0x07, 0x00)
+ if pll_frequency == '160MHz':
+ print("Read PLL 160 MHz")
+ pll_address = PLL_160M
+# I2C_device.write_bytes(0x03, 0x0F)
+ else:
+ print("Read PLL 200 MHz")
+ pll_address=PLL_200M
+# I2C_device.write_bytes(0x03, 0xF8)
+# for reg_cnt in range(0x15):
+ bytes_to_read = 24
+ ret_value = Read_byte_PLL(0, nof_bytes = bytes_to_read, ADDRESS=pll_address)
+ for cnt in range(bytes_to_read):
+ start = cnt*8
+ stri = "Reg nr 0x{:0>2x} value: 0x{:0>2x}".format(cnt, int(ret_value[start:start+8], 2))
+ print(stri)
+
+def read_IO_expanderis():
+ i2c_addr = [0x20, 0x21]
+ for addr in i2c_addr:
+ I2C_device = I2C(addr, BUSNR=I2CBUSNR) #clock selection
+ for reg_cnt in range(8):
+ ack, ret_value = I2C_device.read_bytes(reg_cnt, 2)
+ stri = "Expander : 0x{:0>2x}, Reg 0x{:0>2x}, value 0x{}{}".format(addr, reg_cnt, ret_value[0], ret_value[1]) #[start+2:start])
+ print(stri)
+
+def setup_pll(pll_frequency='200MHz') :
+ I2C_device = I2C(0x20, BUSNR=I2CBUSNR) #clock selection
+ I2C_device.write_bytes(0x07, 0x00)
+ if pll_frequency == '160MHz':
+ print("Set PLL to 160 MHz mode")
+ pll_address = PLL_160M
+ I2C_device.write_bytes(0x03, 0x08)
+ else:
+ print("Set PLL to 200 MHz mode")
+ pll_address=PLL_200M
+ I2C_device.write_bytes(0x03, 0x28)
+ Write_byte_PLL(0x03, 0x0C, pll_address)
+ sleep(0.5)
+ Write_byte_PLL(0x03, 0x08, pll_address)
+ Write_byte_PLL(0x03, 0x08, pll_address)
+ Write_byte_PLL(0x04, 0xCF, pll_address) # CF disable not used outputs, 00 enable all
+ 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
+ Write_byte_PLL(0x08, 0x01, pll_address)
+ Write_byte_PLL(0x07, 0x00, pll_address)
+ Write_byte_PLL(0x09, 0x10, pll_address) # reset
+ if pll_frequency == '160MHz' :
+ Write_byte_PLL(0x0A, 0x10, pll_address)
+ else:
+ Write_byte_PLL(0x0A, 0x14, pll_address)
+ Write_byte_PLL(0x09, 0x00, pll_address)
+ Write_byte_PLL(0x0C, 0x8F, pll_address)
+ Write_byte_PLL(0x0D, 0x88, pll_address) # Dig CLK = 200/1 = 200 MHz
+ Write_byte_PLL(0x0F, 0x08, pll_address) # RCU CLK = 200/1 = 200 MHz
+ Write_byte_PLL(0x11, 0x08, pll_address) # PPS ref CLK = 200/1 = 200 MHz
+ Write_byte_PLL(0x13, 0x88, pll_address) # T.P. CLK = 200/1 = 200 MHz
+
+
+def power(state):
+ stri = "Power to {}".format(state)
+ print(stri)
+ 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
+ if state:
+ bits_to_set_A1 = 0x02 | (1 << CS) | (0 << SCLK) | (0 << SDI)
+ bits_to_set_A2 = 0x04
+ bits_to_set_B1 = 0x02 | (1 << CS) | (0 << SCLK) | (0 << SDI)
+ else:
+ bits_to_set_A1 = 0x00 | (1 << CS) | (0 << SCLK) | (0 << SDI)
+ bits_to_set_A2 = 0x00
+ bits_to_set_B1 = 0x00 | (1 << CS) | (0 << SCLK) | (0 << SDI)
+ if DEBUG :
+ stri = "Bits to reg 0 0x{0:x}".format(bits_to_set_A1)
+ print(stri)
+ I2C_IO_device_A.write_bytes(0x02, bits_to_set_A1)
+ I2C_IO_device_A.write_bytes(0x03, bits_to_set_A2)
+ I2C_IO_device_B.write_bytes(0x02, bits_to_set_B1)
+
+def write_eeprom( data=0x01):
+ #
+ # Write the EEPROM with the serial number etc.
+ #
+ ret_ack, ret_value = dev_i2c_eeprom.read_bytes(0)
+ if ret_ack < 1:
+ print("EEPROM not found during write")
+ return False
+ else:
+ dev_i2c_eeprom.write_bytes(0x00, data)
+ sleep(0.1)
+ return True
+
+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 = read_eeprom()
+ stri = "Wrote to EEPROM: 0x{0:X}, Read from EEPROM: 0x{1} ".format(value, ret_value)
+ print(stri)
+ return True
+
+def apsct_sensors():
+ for sens_line in range(7):
+ read_voltage(sens_line)
+ read_temp()
+
+def read_voltage(input_channel=0):
+ addr = 0x74
+ Vref = 3.0
+ one_step = Vref/(2**(16))
+ I2C_device = I2C(addr, BUSNR=I2CBUSNR)
+ channel_select_word = 0xB0 | ((input_channel%2) << 3) | ((input_channel >> 1) & 0x7)
+ if DEBUG:
+ stri = "Word to select sens input is 0x{0:x}".format(channel_select_word)
+ print(stri)
+ sleep(0.1)
+ I2C_device.write_bytes(channel_select_word, 0xB8)
+ sleep(0.5)
+ ret_ack, ret_value = I2C_device.read_last_reg(3)
+ if 1: #ret_ack:
+ if DEBUG:
+ stri = "Return value input 0 : 0x{0} ".format(ret_value)
+ print(stri)
+ if int(ret_value, 16) >= 0xC00000:
+ print("over range")
+ else:
+ steps = (int(ret_value, 16) & 0x1FFFFF) >> 6
+ voltage = one_step * steps
+ voltage = ((4.7+2.2)/2.2)*2*voltage
+ string = "Voltage sens line {1} is {0:.4f} V".format(voltage, input_channel)
+ print(string)
+ else:
+ stri = " No ACK on device 0x{0:x} ".format(addr)
+ print(stri)
+
+def read_temp():
+ Vref = 3.0
+ addr = 0x74
+ one_step = Vref/(2**(16))
+ I2C_device = I2C(addr, BUSNR=I2CBUSNR)
+ temp_slope = 93.5E-6 * 2**(16+1) / Vref
+ sleep(1.0)
+ I2C_device.write_bytes(0xA0, 0xC0)
+ sleep(1.0)
+ ret_ack, ret_value = I2C_device.read_last_reg(3)
+ if ret_ack:
+ raw_value = (int(ret_value, 16) & 0x1FFFFF) >> 6
+ temperature_K = (raw_value/temp_slope)
+ temperature = temperature_K-273
+ stri = "Temperature : {0:.2f} gr. C".format(temperature)
+ print(stri)
+ 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)
+
+read_temp()
+
+if CHECK_EEPROM :
+ wr_rd_eeprom()
+
+if PWR_RST :
+ power(False)
+ sleep(10)
+ power(True)
+
+if SET_PLL :
+ setup_pll(CLK_FREQ)
+
+if READ_LOCK:
+ if CLK_FREQ == '160MHz' :
+ pll_addr = PLL_160M
+ else:
+ pll_addr = PLL_200M
+ ret_value = Read_byte_PLL(0x00, nof_bytes = 1, ADDRESS=pll_addr)
+ status_pll = int(ret_value,2)
+ if status_pll == 0x04:
+ print("PLL in lock")
+ elif (status_pll & 0x10) > 0:
+ print("Not Locked --> No 10 MHz ref")
+ else:
+ print("Not locked --> PLL Error")
+
+if READ_REGS:
+ read_all_regs_pll(CLK_FREQ)
+
+if READ_ALL:
+ read_all_regs_pll(CLK_FREQ)
+ read_IO_expanderis()
+
+if READ_SENSOR:
+ apsct_sensors()
+read_lol(CLK_FREQ)
--
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