Search found 20 matches

by kgysmits
Wed Jul 25, 2012 4:51 pm
Forum: Development and Feedback
Topic: [RFC] The non-STM32 poll
Replies: 9
Views: 8168

Re: [RFC] The non-STM32 poll

Xilinx Zynq series. One core with Linux / Android, second core with ChibiOS.
by kgysmits
Mon Jun 18, 2012 12:16 pm
Forum: Development and Feedback
Topic: Support for float (%f) in chprintf
Replies: 25
Views: 22664

Re: Support for float (%f) in chprintf

I'm running into the floating point problem also. Dit anyone ever fix this?
I'm using the embedded gdb from launchpad, 4.6-2012-q1-update.
by kgysmits
Thu Jun 14, 2012 1:18 pm
Forum: Development and Feedback
Topic: Better Embedded 2012
Replies: 23
Views: 16315

Re: Better Embedded 2012

If possible put the training on youtube too, you'll reach a larger audience.
We approached ST for sponsoring through their marketing manager, i happened to have his business card from some conference.
by kgysmits
Tue Jun 05, 2012 1:33 am
Forum: Development and Feedback
Topic: STM32 Ethernet Demo
Replies: 259
Views: 228748

Re: STM32 Ethernet Demo

I have attached a part of the STM32F4 with KSZ8031 design. The prototypes work with the FreeRTOS lwIP demo, no further tests were done.

To solder the center pad, you could design your board with a nice big via underneath the chip so you can solder it by hand. 50% solder coverage is plenty for a ...
by kgysmits
Sat May 26, 2012 9:56 am
Forum: General Support
Topic: Application design
Replies: 14
Views: 10538

Re: Application design

Giovanni, it seems hazelnusse is using the quadrature encoder input function of the timers.
by kgysmits
Mon May 14, 2012 8:13 pm
Forum: Development and Feedback
Topic: The SPI slave driver topic
Replies: 7
Views: 10237

Re: The SPI slave driver topic

I was just checking for a SPI slave driver, and found out there isn't one. I was planning to use a STM32F4-DISCOVERY to interface with an Arduino Uno (for education purposes). The STM32F4 would interface with 3 high resolution magnetic rotary encoders, 6 analog input (strain gauges) and PWM output ...
by kgysmits
Tue Apr 24, 2012 10:42 pm
Forum: General Support
Topic: SPI transmission at regular intervals
Replies: 2
Views: 2615

SPI transmission at regular intervals

What's the most efficient way to start an SPI transmission at regular intervals, say 10000 3x8bit transactions per second at 1Mbit? Are virtualTimers suitable for this, or are better solutions available?
by kgysmits
Mon Apr 02, 2012 4:21 pm
Forum: Development and Feedback
Topic: Olimex STM32P207/STM32P407
Replies: 44
Views: 37861

Re: Olimex STM32P204

Giovanni wrote:[...]
5) LCD to be used through a "soft SPI" not a real one.
[...]

The Nokia6610 display uses a 9bit SPI interface, STM32F series only supports 8/16bit transfers. An often overlooked alternative is 9bit USART mode, which we used in our design with a Nokia6610 display.
by kgysmits
Mon Apr 02, 2012 4:15 pm
Forum: Development and Feedback
Topic: STM32 Ethernet Demo
Replies: 259
Views: 228748

Re: STM32 Ethernet Demo

ST has some more PLL design/verification to do then I guess. And an errata to add.
Thanks for letting us know!
by kgysmits
Sun Apr 01, 2012 11:08 am
Forum: User Projects
Topic: Yet another shell for MCU
Replies: 5
Views: 7462

Re: Yet another shell for MCU

mabl wrote:Ok, turns out the license is GPL - too bad, I would have preferred LGPL...

Looks like a LGPL license was committed 13 days ago...