Search found 31 matches

by pieterc
Thu Oct 06, 2016 2:46 am
Forum: Everything ARM and LPC
Topic: SAMD21: 1uF cap on VDDCORE and 1k pull-up on SWCK required
Replies: 3
Views: 2156

Re: SAMD21: 1uF cap on VDDCORE and 1k pull-up on SWCK requir

Hi Colin, Sorry for the late reply (was away on holiday). I have an external 32kHz crystal that I use to clock the external interrupt peripheral so that it is active even when the other clocks are stopped during STANDBY sleep mode. If you also use ASF, you must modify "conf_clocks.h" to enable the o...
by pieterc
Sat Apr 16, 2016 1:29 am
Forum: Everything ARM and LPC
Topic: SAMD21: 1uF cap on VDDCORE and 1k pull-up on SWCK required
Replies: 3
Views: 2156

SAMD21: 1uF cap on VDDCORE and 1k pull-up on SWCK required

Hi there! I'm working on a SAMD21E16B product that will be rolled out in China, India and Africa in huge quantities. We use the STANDBY sleep mode (with RTC running) and under rare circumstances, the cpu locked up and would not wake up from an external interrupt. The only way to recover was to power...
by pieterc
Fri Feb 06, 2015 4:15 am
Forum: Arduino
Topic: CLI app running on Arduino Uno: GPIO,ADC,I2C&SPI
Replies: 0
Views: 578

CLI app running on Arduino Uno: GPIO,ADC,I2C&SPI

Hi everyone! If you own an Arduino Uno board, you can now try out the Piconomic FW Library risk free without abandoning the creature comforts of the Arduino environment. You can use the existing Optiboot bootloader to upload code. I have added a getting started guide for the Arduino Uno. There are e...
by pieterc
Tue Jan 27, 2015 12:27 pm
Forum: AVR Microcontrollers
Topic: Piconomic FW Library, quick start guides, tuts, examples
Replies: 0
Views: 1678

Piconomic FW Library, quick start guides, tuts, examples

Hi everyone, I have upgraded the Piconomic FW Library to the next level. It contains an extensive framework so that you can quickly develop new applications, an Atmel AVR quick start guide, tutorials, examples and quick start guides: * Online documentation (generated with Doxygen) * Sourceforge host...
by pieterc
Tue Sep 13, 2011 3:19 am
Forum: SparkFun Product Questions
Topic: Nifty circuit? Button press enables power, but also uC input
Replies: 5
Views: 739

Re: Nifty circuit? Button press enables power, but also uC input

Here is an updated design using Schottky diodes and a PNP transistor. Red arrows indicate direction of current flow. Diode D4 is required to stop current from flowing through Q1 (when switch S1 is pressed) to VBAT when the micro pulls PSU_HOLD_O high. R5 and C3 is used to give a sufficient RC turn o...
by pieterc
Tue Sep 13, 2011 2:01 am
Forum: SparkFun Product Questions
Topic: Nifty circuit? Button press enables power, but also uC input
Replies: 5
Views: 739

Nifty circuit? Button press enables power, but also uC input

Hi Sparkfunions! Does anyone have a nifty circuit suggestion for the following problem? You MUST have had this requirement this before :) I have a 2 x AA cell powered circuit that I want to stay off (draw < 10 uA) until the user keeps a button pressed for, say 1s or more. The button must then enable...
by pieterc
Mon Aug 16, 2010 1:35 am
Forum: Everything ARM and LPC
Topic: open source Piconomic FW Library; ARM support
Replies: 4
Views: 1706

Re: open source Piconomic FW Library; ARM support

The library has been updated and revised. 0.3.0 has been released and it is now hosted at:

http://piconomic.co.za/fwlib/index.html

Share and enjoy!
Pieter
by pieterc
Sat Aug 14, 2010 4:48 am
Forum: OpenOCD
Topic: How to build OpenOCD for windows
Replies: 61
Views: 97097

Re: How to build OpenOCD for windows

I have updated my step-by-step guide "How to build OpenOCD with FTDI's CDM driver for Windows" and it is now hosted at:
http://piconomic.co.za/fwlib/_b_u_i_l_d ... o_c_d.html

Please update your links.

Share and enjoy!
Pieter
by pieterc
Fri Oct 09, 2009 9:25 am
Forum: OpenOCD
Topic: How to build OpenOCD for windows
Replies: 61
Views: 97097

I use Cygwin to build OpenOCD, but the final binary is not dependent on Cygwin DLLs, because of the CC="gcc -mno-cygwin" parameter, i.e. it is MingW in the end.

If you want to use MinGW, maybe you should look at the following post?
viewtopic.php?t=17598

Best regards,
Pieter
by pieterc
Thu Aug 27, 2009 2:32 am
Forum: OpenOCD
Topic: How to build OpenOCD for windows
Replies: 61
Views: 97097

Hi everyone, In case my post gets bumped down, I want to remind everyone that I have created a step by step (expanded) guide to build OpenOCD 0.2.0 for Windows using Cygwin (a Linux-like environment for Windows). It is linked against FTDI's proprietary (non-GPL) FTD2XX Driver to support FT2232x base...
by pieterc
Mon Aug 24, 2009 9:53 am
Forum: OpenOCD
Topic: StepByStepGuide to build OpenOCD+FTD2XX_driver for Windows
Replies: 2
Views: 914

I'm not an expert with windows drivers and *.inf files, but here's my best guess. The *.inf files can support multiple VID/PID combinations, but you have to add a line for each one. I don't think you can use a "*" wildcard. If you examine the standard CDM driver from FTDI, you will see that it suppo...
by pieterc
Fri Aug 21, 2009 9:42 am
Forum: OpenOCD
Topic: StepByStepGuide to build OpenOCD+FTD2XX_driver for Windows
Replies: 2
Views: 914

StepByStepGuide to build OpenOCD+FTD2XX_driver for Windows

Hi everyone, I have created a step by step guide to build OpenOCD 0.2.0 for Windows using Cygwin (a Linux-like environment for Windows). It is linked against FTDI's proprietary (non-GPL) FTD2XX Driver to support FT2232x based JTAG interfaces. Visit: http://piconomic.berlios.de/build_openocd.html Bes...
by pieterc
Thu Apr 16, 2009 11:22 pm
Forum: Everything ARM and LPC
Topic: Starting out with ARM
Replies: 5
Views: 2265

Here is one of the pages that you can read:

http://piconomic.berlios.de/arm_at91_qu ... guide.html

Best regards,
Pieter