Search found 419 matches

by cfbsoftware
Wed Mar 03, 2021 10:59 pm
Forum: Cortex-M3, M4 and M7
Topic: Measure Temperature and Humidity using Digilent's Pmod HYGRO
Replies: 0
Views: 3630

Measure Temperature and Humidity using Digilent's Pmod HYGRO

The attached source code shows how to measure temperature and humidity via I2C using Digilent's Pmod HYGRO board . It was been tested on STMicroelectronics Nucleo-L152RE development board but should work with little or no modification on any of the development boards with I2C that are supported by v...
by cfbsoftware
Tue Dec 29, 2020 11:48 pm
Forum: Astrobe for FPGA RISC5
Topic: Project Oberon Workstation on Digilent Nexys A7-100T
Replies: 0
Views: 4904

Project Oberon Workstation on Digilent Nexys A7-100T

To help new users get started we have now made available, free of charge, a disk image, Verilog sources and a bitstream file specifically to run the Project Oberon Workstation on the Digilent Nexys A7-100T FPGA trainer board 'out-of-the-box'. This release is based on the Oberon sources (as at March ...
by cfbsoftware
Fri Dec 18, 2020 10:21 pm
Forum: Astrobe for FPGA RISC5
Topic: RISC5 Oberon now on the Artix 7-100T
Replies: 0
Views: 4634

RISC5 Oberon now on the Artix 7-100T

We have successfully implemented Astrobe Embedded Project Oberon on the XC7A100T FPGA device of the Xilinx Artix 7 family. This means that Astrobe can have 480 KBytes of RAM available to it. This is 2-3 times more than our other supported implementations, allowing for more / larger applications to b...
by cfbsoftware
Fri Dec 18, 2020 7:24 am
Forum: Getting Started
Topic: Very impressed with free (!!!) Astrobe for RISC5 FPGA
Replies: 3
Views: 5996

Re: Very impressed with free (!!!) Astrobe for RISC5 FPGA

There's also some useful information in Chapter 14 Building and maintenance tools of the Project Oberon book which is accessible from Astrobe for RISC5 > Help > Project Oberon. Note that you only need to rebuild the disk image if you modify and relink the inner core of the Project Oberon OS, which c...
by cfbsoftware
Tue Dec 15, 2020 8:59 am
Forum: Getting Started
Topic: Very impressed with free (!!!) Astrobe for RISC5 FPGA
Replies: 3
Views: 5996

Re: Very impressed with free (!!!) Astrobe for RISC5 FPGA

Thank you for your positive feedback. It is very much appreciated.

We haven't released the tools that we use to create the disk image but Andreas Pirklbauer, one of the other guys who has modified the OS has. You can find them at:

https://github.com/andreaspirklbauer/Ob ... ding-tools
by cfbsoftware
Fri Sep 11, 2020 4:06 am
Forum: Oberon Language
Topic: Type compatibility rules summary.
Replies: 2
Views: 5728

Type compatibility rules summary.

An interesting question about the type compatibility rules was recently posted here but was deleted by the user. As it happened it actually highlighted a problem which was subsequently fixed in v7.2 of Astrobe. A good summary of Oberon's type compatibility rules which helps to answer these sorts of ...
by cfbsoftware
Fri Sep 04, 2020 6:15 am
Forum: Astrobe for ARM Cortex-M3, M4 and M7
Topic: Can the limit on the number of record extension levels be increased?
Replies: 1
Views: 5027

Re: Can the limit on the number of record extension levels be increased?

There is now a compiler option 'Extension levels' on the Tools > Preference > Compiler tab page. This allows you to change the limit of the number of record extension levels from as little as zero to as many as 8. Be aware that it is a system-wide option. Each additional level incurs an overhead of ...
by cfbsoftware
Wed Mar 11, 2020 3:47 am
Forum: Getting Started
Topic: Timers Microseconds
Replies: 3
Views: 10251

Re: Timers Microseconds

That error message indicates that microsecond timing is not supported on TIM3 on your target microcontroller. Which microcontroller are you targeting?
by cfbsoftware
Sun Jan 19, 2020 11:50 am
Forum: Astrobe for ARM Cortex-M3, M4 and M7
Topic: Configuring Buffer Sizes
Replies: 2
Views: 9450

Re: Configuring Buffer Sizes

You may well 'like' to have different buffer sizes and in theory it may be 'correct' but is it really worth all this effort? How many different buffers are you expecting? What are the minimum and maximum sizes? How many instances of the serial channels would there be? For your example I would simpli...
by cfbsoftware
Sat Dec 28, 2019 4:11 am
Forum: Astrobe for ARM Cortex-M3, M4 and M7
Topic: push {}
Replies: 20
Views: 47527

Re: push {}

Here's an example of how to test the trapping of UsageFault errors:

Code: Select all

MODULE TestTraps4;

IMPORT Main, Out, SYSTEM;

VAR
  p: PROCEDURE;
  x: INTEGER;
  
PROCEDURE P1();
BEGIN
  Out.String("ok"); Out.Ln()
END P1;

BEGIN
  P1();
  SYSTEM.PUT(SYSTEM.ADR(p), SYSTEM.ADR(P1) + 1);
  p()
END TestTraps4.