NEW202412.TXT

 

ON 20241215@4:29:24 PM at page:
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ON 20241215@4:56:44 PM at page:
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ON 20241215@7:07:29 PM at page:
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James Newton[JMN-EFP-786] removed post 42431.3137847222

|Delete '<A TITLE="50.116.57.187" NAME="42431.3137847222" HREF="mailto:madeline at -Remove-sendcom.org">madeline at -Remove-sendcom.org</A> refers to <BLOCKQUOTE><A NAME="50.116.57.187" HREF="https://http://www.edq.com/demos/" TARGET="_top">
https://http://www.edq.com/demos/</A> 
I am reaching out to you to inquire about your site.<BR>
I noticed you have links to several different sites that provide people/address search tools. <BR>
A resource I've used before for similar online research is EDQ.com. Their site has tools for address, email and phone verification and loookup.<BR>
<BR>
The site could be a great addition to your page and assist your readers that are looking to do these types of searches. Would you be interested in adding their link to your list?<BR>
<BR>
Thanks for your time<BR>
Madeline Rogers<BR>
madeline@sendcom.org<BR>
</BLOCKQUOTE>
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ON 20241216@9:45:35 PM at page:
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ON 20241223@9:02:55 PM at page:
On a web page you were interested in at:
http://www.massmind.org/Techref/cans.htm#45649.877025463
James Newton[JMN-EFP-786] See also:
https://http://www.csselectronics.com/pages/can-bus-simple-intro-tutorial
In physical terms, all ECUs are connected on a two-wire bus consisting of a twisted pair: CAN high and CAN low. The wires are often color coded: CAN high is yellow (like the sun), CAN low is green (like the grass). A transceiver connects the wires to the controller, often implemented in an uC aka MCU as part of an ECU (Electronic Control Unit). There are low and high speed variants, as well as FD and XL which further increase speed and payloads. 
<P>
There are 4 types of frames, data (set), remote (get), error, overload (rarely used delay). Each frame consists of:<UL>
<LI>SOF: The Start of Frame is a 'dominant 0' to tell the other nodes that a CAN node intends to talk
<LI>ID: The ID is the frame identifier - lower values have higher priority
<LI>RTR: The Remote Transmission Request indicates whether a node sends data or requests dedicated data from another node
<LI>Control: The Control contains the Identifier Extension Bit (IDE) which is a 'dominant 0' for 11-bit. It also contains the 4 bit Data Length Code (DLC) that specifies the length of the data bytes to be transmitted (0 to 8 bytes)
<LI>Data: The Data contains the data bytes aka payload, which includes CAN signals that can be decoded for information
<LI>CRC: The Cyclic Redundancy Check is used to ensure data integrity
<LI>ACK: The ACK slot indicates if the node has acknowledged and received the data correctly
<LI>EOF: The EOF marks the end of the CAN frame
</UL>
Data can be encoded Intel or Motorola. Higher layer protocols like ODBC, ISOBase, CANOpen, etc... provide more complex systems. A CAN DBC file (CAN database) is a text file that contains information for decoding raw CAN data.



ON 20241225@8:15:23 PM at page:
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James Newton[JMN-EFP-786] Says
/Techref/rtos.htm
Real Time Operating Systems (RTOS)



ON 20241225@8:16:14 PM at page:
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ON 20241225@8:16:42 PM at page:
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http://techref.massmind.org/Techref/rtos.htm#45651.8449305556
James Newton[JMN-EFP-786] Says
/Techref/os/freertos.htm
FreeRTOS



ON 20241225@8:20:53 PM at page:
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James Newton[JMN-EFP-786] Says

A version is available now for the <a href="../raspis.htm">Ras Pi</a> Pico. 
<p>See:
<a href="https://http://www.freertos.org/Documentation/02-Kernel/03-Supported-devices/04-Demos/Raspberry-Pi/smp-demos-for-the-raspberry-pi-pico-board">https://http://www.freertos.org/Documentation/02-Kernel/03-Supported-devices/04-Demos/Raspberry-Pi/smp-demos-for-the-raspberry-pi-pico-board</a>
<BR>Says it was updated Nov 2024, but the repo it points to clearly says it's depreciated and points to another repo. None of them really explain correctly how to download the actual RTOS. 
<P>Corrected(ish) notes:
<pre>
# https://datasheets.raspberrypi.org/pico/getting-started-with-pico.pdf
# install VSCode, and the Raspberry Pi Pico extension, in the extension
# "Open New Project From Example" and select the blink, then set the location to
# a new PiPico folder under Documents. 
# You must build the project to get the SDK downloaded
cd ~/Downloads
# https://github.com/FreeRTOS/FreeRTOS
git clone https://github.com/FreeRTOS/FreeRTOS.git --recurse-submodules
cd FreeRTOS
git submodule update --init --recursive
export PICO_SDK_PATH=~/.pico-sdk/sdk/2.1.0 #or whatever version it is
export PICO_TOOLCHAIN_PATH=~/.pico-sdk/toolchain/13_3_Rel1
export FREERTOS_KERNEL_PATH=~/Downloads/FreeRTOS/FreeRTOS/Source
# https://github.com/FreeRTOS/FreeRTOS-Community-Supported-Demos
# download the zip and extract. 
cd ~/Downloads/FreeRTOS/FreeRTOS-Community-Supported-Demos-main/CORTEX_M0+_RP2040
mkdir build
cd build
cmake ..
make
</pre>



ON 20241225@8:21:48 PM at page:
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ON 20241225@8:23:50 PM at page:
On a web page you were interested in at:
http://www.massmind.org/Techref/rtos.htm#45651.8498842593
James Newton[JMN-EFP-786] See also:
/Techref/method/RealTime.htm
Real Time Methods



ON 20241225@8:26:08 PM at page:
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ON 20241225@8:28:05 PM at page:
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ON 20241225@8:29:09 PM at page:
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ON 20241225@8:29:48 PM at page:
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ON 20241225@9:02:14 PM at page:
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ON 20241225@9:05:06 PM at page:
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ON 20241225@9:11:03 PM at page:
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