Search found 52 matches

by feilipu
Tue Feb 04, 2014 9:52 pm
Forum: Goldilocks
Topic: Arduino Ethernet Shield
Replies: 10
Views: 12374

Re: Arduino Ethernet Shield

Richard, I'm sorry. That's a known issue with any AVR board that doesn't match the incorrect baud rate generated by the 16MHz ATmega chip. See the long discussion here . The ATmega MCU cannot generate a correct baud rate at 16MHz. The issue is so bad that Arduino make a special incorrect exception t...
by feilipu
Tue Feb 04, 2014 9:34 pm
Forum: Goldilocks
Topic: Gameduino 2
Replies: 4
Views: 6602

Re: Gameduino 2

PeterM, It was an oversight. I forgot to put the Calibrate function back into the demo, before I made the video. In developing, I must have calibrated the Gameduino 2 about a thousand times. And truly, it grinds my gears. Which reminds me, I need to write the calibration values to EEPROM. Initially,...
by feilipu
Sat Feb 01, 2014 8:49 am
Forum: Goldilocks
Topic: Arduino Ethernet Shield
Replies: 10
Views: 12374

Re: Arduino Ethernet Shield

I don't have that Shield, but I've checked the schematic of Ethernet Shield 06 - Rev 03. I think it is the same one that you have. This Ethernet Shield has a IC11, a Schmitt Trigger inverter on the SEN line, which ensures that the W5100 stays off the SPI bus, when the SS line is high. This fixes the...
by feilipu
Thu Jan 30, 2014 10:30 pm
Forum: Goldilocks
Topic: Arduino Ethernet Shield
Replies: 10
Views: 12374

Re: Arduino Ethernet Shield

There is an issue with some Ethernet Shields not effectively removing themselves from the SPI bus when they are deselected. If you have an old Ethernet shield, then the W5100 chip will not "exit" the SPI bus which will prevent the SD card from working at all. I have seen that problem with an old Eth...
by feilipu
Thu Jan 30, 2014 10:25 pm
Forum: Goldilocks
Topic: Goldilocks support
Replies: 15
Views: 13706

Re: Goldilocks support

Richard,

can you define the incompatibility with the Ethernet Shield that you're describing?

I'm using some standard Ethernet Shields (and the Freetronics Shield is a "standard" one), with no problems. In fact, Ethernet is one of the key justifications for using a Goldilocks.

Regards, Phillip
by feilipu
Sun Jan 19, 2014 1:35 am
Forum: Goldilocks
Topic: Gameduino 2
Replies: 4
Views: 6602

Re: Gameduino 2

I've built an alternative library for driving the Gameduino2 , derived from the example C driver code provided by FTDI. The library is available as part of my AVR ATmega freeRTOS code base, which can be found on AVRfreeRTOS on Sourceforge . I've written some words about the Gameduino 2 on Goldilocks...
by feilipu
Fri Jan 17, 2014 3:28 am
Forum: Goldilocks
Topic: Gameduino 2
Replies: 4
Views: 6602

Gameduino 2

I'm sure that the Gameduino 2 is a familiar Shield. It is a great 4.3" capacitive touch screen, that is driven directly from the Arduino Pre-R3 pin-out. One great thing about the combination of the Goldilocks and the Gameduino 2 is that, because of the need to wrap a LCD signal lead around the end o...
by feilipu
Sat Dec 28, 2013 6:26 am
Forum: Product / Device Ideas
Topic: New 1284P-powered board suggestions
Replies: 36
Views: 34301

Re: New 1284P-powered board suggestions

It is great that Freetronics is continuing with the "Goldilocks" 1284p boards. I know that Jon and the team have been working on a few new 1284p prototype designs since the our first iteration in May (like the Arduphone at Linux Conf 2014), so this is a chance for everyone to comment on what they'd ...
by feilipu
Thu Dec 19, 2013 11:37 am
Forum: Goldilocks
Topic: INPUT_PULLUP
Replies: 4
Views: 5915

Re: INPUT_PULLUP

That's unusual. Haven't seen this issue previously.

Can you add a little more code and background to make it easier to diagnose, please?
by feilipu
Thu Dec 05, 2013 1:02 pm
Forum: Goldilocks
Topic: analogRead is not working
Replies: 4
Views: 7488

Re: analogRead is not working

Thanks. I see and agree.

Will have to dig through Arduino code more thoroughly, and may be unavoidable to do a special core.

P.