40 lines
778 B
C
40 lines
778 B
C
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#include "utils.h"
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#include "mystd.h"
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// this just burns cycles.
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// the volatile is important, it means that the cpu can't optimize any
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// read/writes for the value
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static inline void spin_loop(volatile uint16_t counts) {
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while (counts)
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counts--;
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}
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void delay_ms(uint16_t ms) {
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while (ms) {
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// this value was taken using a delay of 500ms, and just recording the led
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// blinking. it seems to be high enough such that each loop of delay_loop
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// takes 1ms :D
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spin_loop((F_CPU) / 5000);
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ms--;
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}
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}
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void ft_bzero(void* data, uint16_t size) {
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char* d = data;
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while (size) {
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*d = 0;
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d++;
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size--;
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}
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}
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uint8_t ft_stridx(const char* str, char chr) {
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if (!str)
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return -1;
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for (uint8_t i = 0; str[i]; i++) {
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if (str[i] == chr)
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return i;
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}
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return -1;
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}
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