Self test fail: CS FAIL in Bus Hi-Z 1

Hacking multi-tool. Get one for $30, including worldwide shipping.

Self test fail: CS FAIL in Bus Hi-Z 1

Postby Freaky123 » Tue Jun 25, 2013 5:03 pm

I have the bus pirate version of sparkfun and was trying to listen at an SPI connection between an RF chip and a MCU. I was only receiving "Couldn't keep up" when trying to start the sniffer in moe 1.
So I did a self test and connected the 3.3v and the 5v and then found out that I had a problem with my CS pin. But I don't really understand what could be wrong when only the CS fails at "Bus Hi-Z 1"?

Here is my log:
Code: Select all
HiZ>i
Bus Pirate v3.a
Firmware v6.1 r1676  Bootloader v4.4
DEVID:0x0447 REVID:0x3046 (24FJ64GA002 B8)
http://dangerousprototypes.com
HiZ>~
Disconnect any devices
Connect (Vpu to +5V) and (ADC to +3.3V)
Space to continue
Ctrl
AUX OK
MODE LED OK
PULLUP H OK
PULLUP L OK
VREG OK
ADC and supply
5V(5.00) OK
VPU(5.00) OK
3.3V(3.35) OK
ADC(3.38) OK
Bus high
MOSI OK
CLK OK
MISO OK
CS OK
Bus Hi-Z 0
MOSI OK
CLK OK
MISO OK
CS OK
Bus Hi-Z 1
MOSI OK
CLK OK
MISO OK
CS FAIL
MODE and VREG LEDs should be on!
Any key to exit
Found 1 errors.
Freaky123
Newbie
Newbie
 
Posts: 1
Joined: Tue Jun 25, 2013 4:57 pm

Re: Self test fail: CS FAIL in Bus Hi-Z 1

Postby Sjaak » Wed Jun 26, 2013 3:24 am

Could you check the pullup resistors near the 4066? My best guess is the resistor on the cs line is failing (or the 4066)
User avatar
Sjaak
Fellow
Fellow
 
Posts: 3013
Joined: Sun Jan 03, 2010 2:45 pm
Location: Hiero


Return to Bus Pirate Support