GraspberryGraspberry wrote:Pi quits
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# for gerduino boot issue # avoid_safe_mode=1
The jumpers are the little black things which come in a separate bag with the gertduino.pulmonarypig wrote:I am having the same issue. I don't know what Re(set) jumper is. I don't even know what a jumper is. Please help me boot my Pi..
Does the Raspberry Pi boot OK when the Gertduino is not attached?pulmonarypig wrote:Thank you. I don't have jumpers. My rasberry pi turns on and "sh: can't access tty; job control turned off" is displayed. I have formatted 2 SD cards and neither of them work. I put noobs on each of them. Help?
Can I suggest you create a new post in another section of the forum. This section of the forum is specific to the GertDuino. This thread relates to a problem booting the Raspberry Pi with a GertDuino attached. Hence the discussion about jumpers. The GertDuino comes with jumpers.pulmonarypig wrote:I don't have a gertduino..
Hi stang, 48 and 328 refer to the AtMega 48pa and AtMega 328 chips. The AtMega 328 is the large chip (in a socket), the AtMega 48pa is a much smaller surface mounted chip. The GertDuino user manual describes the layout of the chip and pins on the GertDuino.stang wrote:Sorry bit lost what is pin 48 pin 328 etc.,
There exists only one version out in the wild.For the record, my Gertduino board is listed as being Rev 5, 19 July 2013. I don't have any timestamping / serial number on the board itself beyond this, so I hope that this info is useful in tracking the factory error.
You have to program the 48. Take a look at http://www.raspberrypi.org/phpBB3/viewt ... 1&start=25dogsop wrote:I received my board yesterday and it has the same problem. Grounding the reset pin on the 48 allows the Raspberry Pi to boot but how do I fix the problem permanently? I'd like to be able to move the jumper over to the 328 side so that I can program it as an Arduino.
That solution does allow the Pi the boot... but if I'm not mistaken it makes it impossible to program the Atmega-328 from the Pi. Please correct me if I'm mistaken, but from the manual (v1.4, page 6):Gert van Loo wrote:Try placing the Re jumper on the 48 side.
That keeps the 48 controller in reset and thusfar has solved all boot problems.
The suspicion is that a number of boards have left the factory without having the
test program erased from the Atmega48.
3.2 Program the Atmega-328
To program this device from the Raspberry-Pi you have to place the following 4 jumpers: