Subversion Repositories jtag_stapl_player

#!/usr/bin/python

# Wrapper for StaplPlayer

# Packs program arguments into a STAPL file stapl.stp and plays it using StaplPlayer

# Version 3     2014-10-21

import sys

#the following is needed only for -c option

import wiringpi2

if len(sys.argv) < 2:

  print('No arguments\n Usage example : staplcmd i8 1 2 i10 deadface fe0dfe0f')

  print('will do:\nIRSCAN $8; DRSCAN 32 $1; DRSCAN 32 $2;')

  print('IRSCAN $10;  DRSCAN 32 $deadface; DRSCAN 32 $fe0dfe0f;')

  exit()

f = open('/run/shm/stapl.stp','w')

f.write('ACTION TRANS = DO_TRANS;\n')

f.write('DATA PARAMETERS;\n')

f.write('BOOLEAN idcode_data[32*10];\n')

f.write('BOOLEAN irdata[10*32];\n')

f.write('ENDDATA;\n')

f.write('PROCEDURE DO_TRANS USES PARAMETERS;\n')

splayer_option = ''

work_with_carrier = 0

for s in sys.argv[1:]:

  if s == '-g': #use second JTAG chain

    splayer_option = '-g'

    continue

  if s == '-c': # set the path to work with carrier boards

    import wiringpi2

    wiringpi2.wiringPiSetupSys()

    work_with_carrier = 8       # GPIO for the carrier select[0] line in RPiLVDS board

    continue

  if s[0] == 'i':

    f.write('IRSCAN 8, $' + s[1:] + ', CAPTURE irdata[7..0];\n')

  else:

    f.write('DRSCAN 32, $' + s.rjust(8,'0') + ', CAPTURE idcode_data[31..0];\n')

    f.write('EXPORT "Shifted Out:", idcode_data[31..0];\n')

f.write('ENDPROC;\n')

f.close()

if (work_with_carrier != 0):     # set route to carrier board

  if (splayer_option == '-g'):

     work_with_carrier = 7      # GPIO for the carrier select[1] line in RPiLVDS board

  wiringpi2.pinMode(work_with_carrier,1)

  print('Executing wiringpi2.digitalWrite('+str(work_with_carrier)+',1)')

  wiringpi2.digitalWrite(work_with_carrier,1)

  if wiringpi2.digitalRead(work_with_carrier) != 1 :

    print('ERROR JTAG path through FEM using GPIO pin ' + str(work_with_carrier) + ' was not established')

    print('Did you forget "gpio export '+ str(work_with_carrier) + ' out" after reboot?')

    exit(1)

#print("Stapl instructions:\n")

#f = open('stapl.stp','r')

#for s in f:

#  print(s),

#f.close()

# execute action

import subprocess

cmdline = 'StaplPlayer ' + splayer_option + ' -aTRANS /run/shm/stapl.stp'

#print('Executing:'+cmdline)

p = subprocess.Popen(cmdline, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)

for line in p.stdout.readlines():

  print line,

retval = p.wait()

if (work_with_carrier != 0):

  print('Executing wiringpi2.digitalWrite('+str(work_with_carrier)+',0)')

  wiringpi2.digitalWrite(work_with_carrier,0)

  if wiringpi2.digitalRead(work_with_carrier) != 0 :

    print('ERROR JTAG path through FEM using GPIO pin ' + str(work_with_carrier) + ' was not closed')