Search found 318 matches
- Thu Jan 07, 2016 11:56 am
- Forum: Development Tools and Programming
- Topic: Parse error when including time.h
- Replies: 4
- Views: 13060
Re: Parse error when including time.h
<xs1.h> defines a clock type which represents a clock block resource. This clock "type" is actually a macro that expands to __clock_t which recognized as a builtin type by the xC compiler. The C standard library header <time.h> defines the clock() function, as required by the C89 standard....
- Tue Oct 20, 2015 3:54 pm
- Forum: Q&A
- Topic: .globwrite directive is greater than 65535
- Replies: 2
- Views: 3411
Answer 3998
<r>The mechanism the tools use to check for parallel usage errors in xC limits the maximum constant index you can use to access a global array to 2^16. A simple example which errors is as follows:<br/> <br/> char a[0x10001];<br/> <br/> int main() {<br/> a[0x10000] = 0;<br/> return 0;<br/> }<br/>...
- Wed Oct 14, 2015 9:57 pm
- Forum: Other Applications
- Topic: DFU safety and booting wrong image
- Replies: 16
- Views: 21057
Re: DFU safety and booting wrong image
However, I need for the DFU image to contain some unique identifying data that can be read by the bootloader. How much data do you need to identify the type of image? If the information can be packed in a small number of bits then you might be able to encode it in the version number of the flash im...
- Wed Oct 14, 2015 9:40 pm
- Forum: startKIT
- Topic: XSCOPE Error: XN11049 Network positioning failed
- Replies: 1
- Views: 5511
Re: XSCOPE Error: XN11049 Network positioning failed
The standard .xn file for the XK-1A already includes an xscope link so there is no need to added a second xscope link to the .xn file. In particular you should be able to remove the following from your .xn file: <Link Encoding="2wire" Delays="4,4" Flags="XSCOPE"> <LinkE...
- Sun Sep 13, 2015 8:39 pm
- Forum: Q&A
- Topic: 8 bit signed overflowing problem
- Replies: 1
- Views: 3863
Answer 3880
<t>My interpretation of what you are trying to do is as follows: implement a comparison function that returns whether the first timer value was sampled after the second, assuming that the first timer value was sampled no more than 128 timer ticks before / 127 timer ticks after the second value.<br/>...
- Fri Sep 11, 2015 9:11 pm
- Forum: Development Tools and Programming
- Topic: how to reinterpret cast of "integer pointer" to "char array?
- Replies: 2
- Views: 3900
Re: how to reinterpret cast of "integer pointer" to "char ar
int data[100], *ptr = & data[0]; char byte = 0; (*ptr, char[])[5] = byte; // This doesn't work: "error: out of bounds array access" sizeof(*p) == 4. As a result you can only reinterpret it to a type of size 4 or less. If you reinterpret it as a array of char then the array will only h...
- Thu Aug 13, 2015 12:48 am
- Forum: Projects
- Topic: Memory extender and/or virtual memory subsystem
- Replies: 6
- Views: 12488
Re: Memory extender and/or virtual memory subsystem
There was an error in one of the lookup tables - I think it should be fixed now.richard wrote:The app now hits the same issue you ran into, i.e. when a STW_l3r instruction causes an exception the st8 method is called instead of the stw method. I'll see if I can figure out what is going wrong.
- Wed Aug 12, 2015 9:57 pm
- Forum: Projects
- Topic: Memory extender and/or virtual memory subsystem
- Replies: 6
- Views: 12488
Re: Memory extender and/or virtual memory subsystem
I took another look at memory extender code. I noticed a bug in the kernel stack allocation which could have caused memory corruption - I've pushed a fix for this. I also extended the example app to try all combinations of load / store instruction. The app now hits the same issue you ran into, i.e. ...
- Tue Aug 04, 2015 8:38 pm
- Forum: Q&A
- Topic: interface as select function argument
- Replies: 2
- Views: 4710
Answer 3630
<t>The syntax for calling a select function from a select is:<br/> <br/> case local_imp(mem);<br/> <br/> not<br/> <br/> case local_imp(mem): break;<br/> <br/> The second syntax is used for calling transaction functions from a select, and transaction functions must have a channel end argument (which...
- Tue Aug 04, 2015 2:27 pm
- Forum: Projects
- Topic: Memory extender and/or virtual memory subsystem
- Replies: 6
- Views: 12488
Re: Memory extender and/or virtual memory subsystem
I see you've already found sc_memory_extender, which contains code for handling a ET_LOAD_STORE exception. I wrote this code a while back, and I'd be happy to answer questions about it. You might also want to take a look at the following git repo: https://github.com/stevekerrison/sc_memkernel This r...