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')