Arm delay loop. So how do I wait close to 150 cycles with or without instruction caches and branch prediction enabled? Dec 11, 2020 · The Low-Tech, Active Delay A completely serviceable, functional, and reasonably accurate delay feature can be implemented in a bare-metal environment using nothing more than a humble while() loop. To slow down the switching between patterns a basic delay function is implemented and called in each iteration of the loop. Remember that the compiler is what converts your C/C++ code to machine code. Dec 17, 2014 · I want to delay an ARM Cortex M0+ for n cycles, without using a timer, with the smallest possible code size. To implement the delay() function yourself without using the library, follow the following steps: Write a simple for loop and see how many assembly instructions each loop takes. Jul 15, 2014 · At its core, a delay routine is pretty simple. By using the CPU cycle count and/or nested loops, reasonably accurate software-based delays can be achieved. Oct 5, 2023 · Fortunately, there are techniques that allow implementing delays on the Cortex-M0+ even without hardware timers. But once those are turned on that loop runs way faster, faster than 150 cycles I think. .
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