I also posted this issue on Github already, but figured I might also try here. Issue follows, any help appreciated!
I have a CWLite with an STM32F4
target. Using the chipwhisperer virtual machine (version 5.5.1) I get a WARNING:root:Unexpected start to command: None
when I try out a the simpleserial-base
example. How would I go about debugging this?
I executed the following commands in the jupyer
notebook:
import chipwhisperer as cw scope = cw.scope() target = cw.target(scope, cw.targets.SimpleSerial) scope.default_setup() cw.program_target(scope, cw.programmers.STM32FProgrammer, "../hardware/victims/firmware/simpleserial-base/simpleserial-base-CW308_STM32F4.hex")
This seems to work:
Serial baud rate = 115200 Detected known STMF32: STM32F40xxx/41xxx Extended erase (0x44), this can take ten seconds or more Attempting to program 5315 bytes at 0x8000000 STM32F Programming flash... STM32F Reading flash... Verified flash OK, 5315 bytes Serial baud rate = 38400
Now I build the simpleserial-base
example and want to send a simple message:
%%bash
cd …/hardware/victims/firmware/simpleserial-base/
make PLATFORM=“CW308_STM32F4” CRYPTO_TARGET=NONE
msg = bytearray([1,2,3,4])
target.simpleserial_write(“p”,msg)
print(target.simpleserial_read(“r”, 1000, timeout=10000))
which returns the error:
WARNING:root:Unexpected start to command: None
Printing the variables scope
and target
:
print(scope) cwlite Device sn = 50203220313038543230323239313037 fw_version = major = 0 minor = 30 debug = 0 gain = mode = low gain = 0 db = 5.5 adc = state = False basic_mode = low timeout = 2 offset = 0 presamples = 0 samples = 0 decimate = 1 trig_count = 6010355 fifo_fill_mode = normal clock = adc_src = clkgen_x1 adc_phase = 0 adc_freq = 0 adc_rate = 0.0 adc_locked = True freq_ctr = 0 freq_ctr_src = extclk clkgen_src = system extclk_freq = 10000000 clkgen_mul = 2 clkgen_div = 1 clkgen_freq = 192000000.0 clkgen_locked = True trigger = triggers = tio4 module = basic io = tio1 = serial_tx tio2 = serial_rx tio3 = high_z tio4 = high_z pdid = high_z pdic = high_z nrst = high_z glitch_hp = False glitch_lp = False extclk_src = hs1 hs2 = None target_pwr = True tio_states = (1, 1, 0, 0) cdc_settings = array('B', [1, 1]) glitch = clk_src = target width = 10.15625 width_fine = 0 offset = 10.15625 offset_fine = 0 trigger_src = manual arm_timing = after_scope ext_offset = 0 repeat = 1 output = clock_xor
print(target) Serial baud rate = 38400 SimpleSerial Settings = output_len = 16 baud = 38400 simpleserial_last_read = simpleserial_last_sent =