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-rwxr-xr-xsrc/sw/core_tester.py249
1 files changed, 249 insertions, 0 deletions
diff --git a/src/sw/core_tester.py b/src/sw/core_tester.py
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+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#=======================================================================
+#
+# core_tester.py
+# --------------
+# This program sends several commands to the coretest subsystem
+# in order to check the functionality of the uart and test_core
+# cores connected to coretest.
+#
+# Note: This proram requires the PySerial module.
+# http://pyserial.sourceforge.net/
+#
+#
+# Author: Joachim Strömbergson
+# Copyright (c) 2014 SUNET
+#
+# Redistribution and use in source and binary forms, with or
+# without modification, are permitted provided that the following
+# conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in
+# the documentation and/or other materials provided with the
+# distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+#=======================================================================
+
+#-------------------------------------------------------------------
+# Python module imports.
+#-------------------------------------------------------------------
+import sys
+import serial
+import os
+import time
+import threading
+
+
+#-------------------------------------------------------------------
+# Defines.
+#-------------------------------------------------------------------
+VERBOSE = False
+
+# Memory map.
+SOC = '\x55'
+EOC = '\xaa'
+READ_CMD = '\x10'
+WRITE_CMD = '\x11'
+TEST_CORE_ADDR_PREFIX = '\x01'
+UART_ADDR_PREFIX = '\x02'
+NAME0_ADDR = '\x00'
+NAME1_ADDR = '\x01'
+TYPE_ADDR = '\x02'
+VERSION_ADDR = '\x03'
+TEST_CORE_RW_REG = '\x10'
+TEST_CORE_DEBUG_REG = '\x20'
+
+
+#-------------------------------------------------------------------
+# print_response()
+#
+# Parses a received buffer and prints the response.
+#-------------------------------------------------------------------
+def print_response(buffer):
+ if VERBOSE:
+ print "Length of response: %d" % len(buffer)
+ if buffer[0] == '\xaa':
+ print "Response contains correct Start of Response (SOR)"
+ if buffer[-1] == '\x55':
+ print "Response contains correct End of Response (EOR)"
+
+ response_code = ord(buffer[1])
+
+ if response_code == 0xfe:
+ print "UNKNOWN response code received."
+
+ elif response_code == 0xfd:
+ print "ERROR response code received."
+
+ elif response_code == 0x7f:
+ read_addr = ord(buffer[2]) * 256 + ord(buffer[3])
+ read_data = (ord(buffer[4]) * 16777216) + (ord(buffer[5]) * 65536) +\
+ (ord(buffer[6]) * 256) + ord(buffer[7])
+ print "READ_OK. address 0x%02x = 0x%04x." % (read_addr, read_data)
+
+ elif response_code == 0x7e:
+ read_addr = ord(buffer[2]) * 256 + ord(buffer[3])
+ print "WRITE_OK. address 0x%02x." % (read_addr)
+
+ elif response_code == 0x7d:
+ print "RESET_OK."
+
+ else:
+ print "Response 0x%02x is unknown." % response_code
+ print buffer
+
+
+#-------------------------------------------------------------------
+# read_serial_thread()
+#
+# Function used in a thread to read from the serial port and
+# collect response from coretest.
+#-------------------------------------------------------------------
+def read_serial_thread(serialport):
+ if VERBOSE:
+ print "Serial port response thread started. Waiting for response..."
+
+ buffer = []
+ while True:
+ response = serialport.read()
+ buffer.append(response)
+ if response == '\x55':
+ print_response(buffer)
+ buffer = []
+
+
+#-------------------------------------------------------------------
+# write_serial_bytes()
+#
+# Send the bytes in the buffer to coretest over the serial port.
+#-------------------------------------------------------------------
+def write_serial_bytes(tx_cmd, serialport):
+ if VERBOSE:
+ print "Command to be sent:", tx_cmd
+
+ for tx_byte in tx_cmd:
+ serialport.write(tx_byte)
+
+ # Allow the device to complete the transaction.
+ time.sleep(0.1)
+
+
+#-------------------------------------------------------------------
+# main()
+#
+# Parse arguments.
+#-------------------------------------------------------------------
+def main():
+ # Open device
+ ser = serial.Serial()
+ ser.port='/dev/cu.usbserial-A801SA6T'
+ ser.baudrate=9600
+ ser.bytesize=8
+ ser.parity='N'
+ ser.stopbits=1
+ ser.timeout=1
+ ser.writeTimeout=0
+
+ if VERBOSE:
+ print "Setting up a serial port and starting a receive thread."
+
+ try:
+ ser.open()
+ except:
+ print "Error: Can't open serial device."
+ sys.exit(1)
+
+ try:
+ my_thread = threading.Thread(target=read_serial_thread, args=(ser,))
+ except:
+ print "Error: Can't start thread."
+ sys.exit()
+
+ my_thread.daemon = True
+ my_thread.start()
+
+ # TC1: Read name, type and version from test_core:
+ print "TC1: Reading name, type and version words from test_core."
+ my_cmd = [SOC, READ_CMD, TEST_CORE_ADDR_PREFIX, NAME0_ADDR, EOC]
+ write_serial_bytes(my_cmd, ser)
+ my_cmd = [SOC, READ_CMD, TEST_CORE_ADDR_PREFIX, NAME1_ADDR, EOC]
+ write_serial_bytes(my_cmd, ser)
+ my_cmd = [SOC, READ_CMD, TEST_CORE_ADDR_PREFIX, TYPE_ADDR, EOC]
+ write_serial_bytes(my_cmd, ser)
+ my_cmd = [SOC, READ_CMD, TEST_CORE_ADDR_PREFIX, VERSION_ADDR, EOC]
+ write_serial_bytes(my_cmd, ser)
+
+
+ # TC2: Read id0, id1 and version from test_core:
+ print "TC2: Reading id and version words from uart."
+ my_cmd = [SOC, READ_CMD, UART_ADDR_PREFIX, NAME0_ADDR, EOC]
+ write_serial_bytes(my_cmd, ser)
+ my_cmd = [SOC, READ_CMD, UART_ADDR_PREFIX, NAME1_ADDR, EOC]
+ write_serial_bytes(my_cmd, ser)
+ my_cmd = [SOC, READ_CMD, UART_ADDR_PREFIX, TYPE_ADDR, EOC]
+ write_serial_bytes(my_cmd, ser)
+ my_cmd = [SOC, READ_CMD, UART_ADDR_PREFIX, VERSION_ADDR, EOC]
+ write_serial_bytes(my_cmd, ser)
+
+
+ # TC3: Read, write, read and write again from the RW register in the test core.
+ print "TC3: Read, write, read and write again from the RW register in the test core."
+ my_cmd = [SOC, READ_CMD, TEST_CORE_ADDR_PREFIX, TEST_CORE_RW_REG, EOC]
+ write_serial_bytes(my_cmd, ser)
+ test_pattern = ['\xde', '\xad', '\xbe', '\xef']
+ my_cmd = [SOC, WRITE_CMD, TEST_CORE_ADDR_PREFIX, TEST_CORE_RW_REG] + test_pattern + [EOC]
+ write_serial_bytes(my_cmd, ser)
+ my_cmd = [SOC, READ_CMD, TEST_CORE_ADDR_PREFIX, TEST_CORE_RW_REG, EOC]
+ write_serial_bytes(my_cmd, ser)
+ test_pattern = ['\x13', '\x37', '\xfe', '\xed']
+ my_cmd = [SOC, WRITE_CMD, TEST_CORE_ADDR_PREFIX, TEST_CORE_RW_REG] + test_pattern + [EOC]
+ write_serial_bytes(my_cmd, ser)
+ my_cmd = [SOC, READ_CMD, TEST_CORE_ADDR_PREFIX, TEST_CORE_RW_REG, EOC]
+ write_serial_bytes(my_cmd, ser)
+
+
+ # TC4: Write a sequence of words to the debug registers. This should be visible on the leds."
+ for i in range (0, 256, 7):
+ print "Sending write command: address 0x0120 = 0x%08x." % i
+ my_cmd = [SOC, WRITE_CMD, TEST_CORE_ADDR_PREFIX, TEST_CORE_DEBUG_REG] +\
+ ['\x00', '\x00', '\x00'] + [chr(i)] + [EOC]
+ for tx_byte in my_cmd:
+ ser.write(tx_byte)
+ time.sleep(0.01)
+
+ # Exit nicely.
+ if VERBOSE:
+ print "Done. Closing device."
+ ser.close()
+
+
+#-------------------------------------------------------------------
+# __name__
+# Python thingy which allows the file to be run standalone as
+# well as parsed from within a Python interpreter.
+#-------------------------------------------------------------------
+if __name__=="__main__":
+ # Run the main function.
+ sys.exit(main())
+
+#=======================================================================
+# EOF serial_write_sequence.py
+#=======================================================================