Failed to detect chip

[Sousou]

Hi,
I wanted to run the tutorial: Lab 1_1B - AES Loop Skip Fault Attack in Practice with a CWLITE.
But when executing this:

fw_path = "../../../hardware/victims/firmware/simpleserial-aes/simpleserial-aes-CWLITEARM.hex".format(PLATFORM)
cw.program_target(scope, prog, fw_path)

I got this error:

Failed to detect chip. Check following:

1. Connections and device power.
2. Device has valid clock (or remove clock entirely for internal osc).
3. On Rev -02 CW308T-STM32Fx boards, BOOT0 is routed to PDIC.

OSError: Could not detect STM32F, check connections, BOOT MODE entry setup

I made sure the device is connected to the pc.

Best,
Sousou

[Alex_Dewar]

Hi Sousou,

What target are you using with your ChipWhisperer Lite? Also, are you using a 1-part ChipWhisperer, or are you using a separate target (2-part, CW308, etc)?

Alex

[Sousou]

Hi Alex,
I am using 2-part a chipwhisperer, a UFO Board with an STM32F4 target on it, as in the picture.
Best,
Sousou

[Sousou]

I tried all the tutorials, I still have the same issue.
I upgraded the firmware, and update the chipwhisperer version 5.6.1
I checked my usb cable.
But I still have the same issue.

[Alex_Dewar]

When the ChipWhisperer is plugged in, do you see the 1.2V and 3.3V LEDs on the CW308 lit up?

Alex

[Sousou]

yes 1.2 and 3.3 are on.

[Alex_Dewar]

Have you tried any other targets? Is it just this target that doesn’t work, or do others not work as well?

Alex

[Sousou]

I have only this target and it was working at the start. I had this error suddenly.

[Alex_Dewar]

That’s strange. If do you print(scope) right before you try programming, what does it print?

Alex

[Sousou]

Hi Alex,
Printing the scope give me the following:

cwlite Device
sn = 50203120324136503230342037313031
fw_version =
major = 0
minor = 60
debug = 0
gain =
mode = high
gain = 30
db = 24.8359375
adc =
state = False
basic_mode = rising_edge
timeout = 2
offset = 0
presamples = 0
samples = 5000
decimate = 1
trig_count = 7333994
fifo_fill_mode = normal
clock =
adc_src = clkgen_x4
adc_phase = 0
adc_freq = 29538459
adc_rate = 29538459.0
adc_locked = True
freq_ctr = 0
freq_ctr_src = extclk
clkgen_src = system
extclk_freq = 10000000
clkgen_mul = 2
clkgen_div = 26
clkgen_freq = 7384615.384615385
clkgen_locked = True
trigger =
triggers = tio4
module = basic
io =
tio1 = serial_rx
tio2 = serial_tx
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 = clkgen
target_pwr = True
tio_states = (1, 1, 0, 0)
cdc_settings = bytearray(b’\x00\x00\x00\x00’)
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

[Alex_Dewar]

Looks like all those values are okay. It’s a bit hard to tell, but are you missing a jumper on J14, by the FILT pin?

Alex

[Sousou]

I added the jumper but the problem was persisting.
Then suddenly it is working again. I do not understand why ! I think I need to change the target board, as it gives me this error from time to time with no obvious reason.
Best

[Alex_Dewar]

If there wasn’t any jumper on J14, then that’s almost certainly the issue since that jumper is responsible for routing power to the microcontroller.

[hanaabdelhakim]

Hello Alex,

I am facing the same problem(Failed to detect chip. Check following:

1. Connections and device power.
2. Device has valid clock (or remove clock entirely for internal osc).
3. On Rev -02 CW308T-STM32Fx boards, BOOT0 is routed to PDIC.)
   and this is a picture of my board and my scope:
   cwlite Device
   sn = 50203220384d4a543030313135323035
   fw_version =
   major = 0
   minor = 64
   debug = 0
   gain =
   mode = high
   gain = 30
   db = 24.8359375
   adc =
   state = False
   basic_mode = rising_edge
   timeout = 2
   offset = 0
   presamples = 0
   samples = 5000
   decimate = 1
   trig_count = 47410529
   fifo_fill_mode = normal
   clock =
   adc_src = clkgen_x4
   adc_phase = 0
   adc_freq = 29538459
   adc_rate = 29538459.0
   adc_locked = True
   freq_ctr = 0
   freq_ctr_src = extclk
   clkgen_src = system
   extclk_freq = 10000000
   clkgen_mul = 2
   clkgen_div = 26
   clkgen_freq = 7384615.384615385
   clkgen_locked = True
   trigger =
   triggers = tio4
   module = basic
   io =
   tio1 = serial_rx
   tio2 = serial_tx
   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 = clkgen
   target_pwr = True
   tio_states = (1, 1, 0, 0)
   cdc_settings = bytearray(b’\x00\x00\x00\x00’)
   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
   
   

[hanaabdelhakim]

the jumper I have now is between the 3 and 2 on j14 is that correct?

[hanaabdelhakim]

When I tried these commands, I got this error
AttributeError: ‘function’ object has no attribute ‘io’

[Alex_Dewar]

Your CW308 should have 3.3V SRC set to J1/CW. Also, scope = cw.scope should be scope = cw.scope().

[hanaabdelhakim]

Thank you alot Alex, this fixed the problem