Hello, I need help in controlling the trigger
I have a board with a reset output
Is it possible to reset ChipWhisperer lite
more specifically scope.io.nrst so that it would reset the processor
low and high status
that is 0v and 3.3v
and scope.trigger.triggers = ‘tio4’ was responsible for arming the fault
and liberation "?
Is it possible without an external trigger
here is a simple code maybe someone can help me
import chipwhisperer.common.results.glitch as glitch
import chipwhisperer as cw
import serial
import time
import sys
import os
scope = cw.scope()
Set up scope specific parameters
scope.clock.clkgen_freq = 80E6
Trigger on IO4 this is connected to our reset line
scope.glitch.clk_src = “clkgen” # set glitch input clock
scope.glitch.output = “enable_only” # glitch_out = clk ^ glitch
scope.glitch.trigger_src = “ext_single” # glitch only after scope.arm() called
scope.io.glitch_lp = True
scope.io.glitch_hp = True
Trigger on IO4. This is connected to our reset line
scope.trigger.triggers = ‘tio4’
def reboot_flush():
global scope
# Cut power to target device
scope.io.target_pwr = True
# Pull reset low
scope.io.nrst = True
# Set up CW for glitching
scope.arm()
# Put reset in high impedance mode (we are triggering off of it)
scope.io.nrst = ‘low’
time.sleep(0.01)
scope.io.nrst = ‘high’
# Power the target and wait for the glitch to trigger
scope.io.target_pwr = False
gc = glitch.GlitchController(groups=[“success”, “failure”], parameters=[“width”, “offset”, “ext_offset”])
gc.set_global_step(g_step)
#gc.set_range(“width”, 40, 40)
#gc.set_range(“offset”, -45, -45)
gc.set_range(“ext_offset”, 45000, 48000)
scope.glitch.repeat=70