Writing ISR in assembly. AVR-GCC 5.4.0 Thanks, exactly what I was looking for.
Edit - I need control over every single clock cycle inside this ISR, the crazy part is that the interrupt is interrupting itself and...
Thursday, 28 April 2022 - 10:48
Writing ISR in assembly. AVR-GCC 5.4.0 One more question :-
Say I want to dedicate register r2 to act as a "counter" variable in the above code. So in ISR, I don't have to push pop the counter variable from RAM...
Thursday, 28 April 2022 - 07:55
Writing ISR in assembly. AVR-GCC 5.4.0 westfw wrote:The easiest solution is to make your local static variables be global variables instead.
"static local" variables are just a figment of C's imagination; they end up...
Thursday, 28 April 2022 - 07:43
Writing ISR in assembly. AVR-GCC 5.4.0 avrcandies wrote:Any ISR worth beans should 99% of the time save the sreg
Yes, the address 0x3F in code is for SREG. Saved it in R16. Restoring it back on the way out....
Arduino and FPGA Okay so there is a something called carrier board in which the Snō's FPGA plugs in. The atmega328 is inside the FPGA chip (which itself can't be modified, I think)...
Techno KG wrote: The Pulse are having a different periods but the On-time is the same for each pulse! Oh, I think I understand what you are saying. Let me look at this...
Welcome. I went too deep and wrote this. I used AVR delay loop calculator. Try this code and report. void sendSignal() { // Pin Low for 31...
Quantum Computing for Electrical Engineers
Type cast the address to uint8_t * uint8_t *raw_sensor_data_bytes = (uint8_t *)&sensor_data.raw_sensor_data;
Thanks, exactly what I was looking for. Edit - I need control over every single clock cycle inside this ISR, the crazy part is that the interrupt is interrupting itself and...
One more question :- Say I want to dedicate register r2 to act as a "counter" variable in the above code. So in ISR, I don't have to push pop the counter variable from RAM...
westfw wrote:The easiest solution is to make your local static variables be global variables instead. "static local" variables are just a figment of C's imagination; they end up...
avrcandies wrote:Any ISR worth beans should 99% of the time save the sreg Yes, the address 0x3F in code is for SREG. Saved it in R16. Restoring it back on the way out....
In the link
By default all variables that you create are stored in SRAM. When you are reading a variable in C it is reading from SRAM in most cases.
hamisu wrote:Isnt the &port is already the address of the Port Register ? I think you want to do is this. if (port == 0x25) { // do something } Remove the &...
Okay so there is a something called carrier board in which the Snō's FPGA plugs in. The atmega328 is inside the FPGA chip (which itself can't be modified, I think)...
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