Search found 440 matches
- Thu Dec 08, 2011 9:30 pm
- Forum: Astrobe for ARM Cortex-M0, M3, M4 and M7
- Topic: Trap in MAU
- Replies: 6
- Views: 45636
Re: Trap in MAU
The identification of the error codes are in Section 8.1 Runtime Error Codes in the Oberon for Microcontrollers document. Trap 11 is a heap overflow. If you suspect you are not always going to have enough free memory on your MCU when using NEW to allocate heap space you should use the MAU functions ...
- Thu Oct 27, 2011 12:22 pm
- Forum: Oberon Language
- Topic: Oberon 2011: CASE Statements
- Replies: 1
- Views: 13745
Re: Oberon 2011: CASE Statements
Consider the following example which could be used to map a set of strings to a corresponding integer code: PROCEDURE FindKeyword*(id: ARRAY OF CHAR; VAR sym: INTEGER); BEGIN sym := ident; IF id = "ARRAY" THEN sym := array ELSIF id = "BEGIN" THEN sym := begin ELSIF id = "BY" THEN sym := by ELSIF id ...
- Mon Oct 10, 2011 7:25 am
- Forum: Getting Started
- Topic: Interrupt for check if smth come with UART
- Replies: 1
- Views: 17664
Re: Interrupt for check if smth come with UART
I don't know whether it answers your specific question but there is a sample of interrupt driven UART code in the topic "Buffered UART Routines":
viewtopic.php?f=2&t=74
viewtopic.php?f=2&t=74
- Sat Oct 08, 2011 12:06 pm
- Forum: Oberon Language
- Topic: Oberon 2011: CASE Statements
- Replies: 1
- Views: 13745
Oberon 2011: CASE Statements
Single-character strings can now be used as CASE labels as well as INTEGER constants. When the labels are strings the selector is a CHAR. The 2011 Oberon Language Report does not explicitly specify implementation details of CASE statements such as: What is the valid range of values for CASE labels? ...
- Fri Sep 30, 2011 11:30 pm
- Forum: Oberon Language
- Topic: Further revision of Oberon-07
- Replies: 26
- Views: 167535
Re: Further revision of Oberon-07
If you nominate a character as an escape character e.g. "\" then you also have to specify how to represent that escape character in the situations where you want to use it as literal character, not an escape. Typically this is done by doubling the character e.g. "\\". Unfortunately in computing cont...
- Sat Sep 24, 2011 1:21 pm
- Forum: Oberon Language
- Topic: CASE statement
- Replies: 1
- Views: 14329
Re: CASE statement
The maximum value that you can use as a label in a CASE statement in the Astrobe implementation of Oberon is 255. Refer to the Implementation Limits section in the Astrobe documentation for more information. If you really want to use a CASE statement you could rewrite your example as: lcdOrientation...
- Fri Sep 23, 2011 8:19 am
- Forum: Oberon Language
- Topic: Further revision of Oberon-07
- Replies: 26
- Views: 167535
Re: Further revision of Oberon-07
Correct. "" is not a single-character string so it cannot be assigned to a CHAR variable. Single-character strings are interpreted in either of two ways in the Astrobe Oberon 2011 compiler depending on whether the context is a CHAR or an ARRAY OF CHAR. The following example illustrates the two diffe...
- Thu Sep 22, 2011 1:34 pm
- Forum: Oberon Language
- Topic: Further revision of Oberon-07
- Replies: 26
- Views: 167535
Re: Further revision of Oberon-07
It is also worth noting that the string 0X needs special interpretation. Our interpretation of the 2011 report led to the following test program which demonstrates various ways of creating a null string: MODULE NullStr1; IMPORT Main, Out, Strings; VAR ch: CHAR; s: ARRAY 1 OF CHAR; PROCEDURE Length(...
- Thu Sep 22, 2011 8:30 am
- Forum: Oberon Language
- Topic: What is wrong with this code?
- Replies: 2
- Views: 17579
Re: What is wrong with this code?
This is most likely related to the restriction described in the section titled "Extending imported types" in Section titled "Oberon-07 Language Differences and Restrictions" in the Astrobe documentation. The solution is to split the definition of CamLib into two parts: TYPE CamLib* = POINTER TO CamL...
- Tue Sep 20, 2011 10:33 pm
- Forum: Oberon Language
- Topic: Oberon Day 2011 - Videos and Presentations
- Replies: 0
- Views: 11831
Oberon Day 2011 - Videos and Presentations
The slides (in PDF format) of the presentations given at Oberon Day 2011 in Zurich earlier this year are now available, as well as the videos, from the ETH website. The slides can be downloaded from: http://www.oberonday2011.ethz.ch/talks/ The videos can be viewed at: http://www.multimedia.ethz.ch/c...