36 lines
528 B
C
36 lines
528 B
C
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#include "sys.h"
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#define CYCLES_PER_MS 6666 // ish
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void busy_sleep_1ms() {
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for (int i = 0; i < CYCLES_PER_MS; ++i) {
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// nothing
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}
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}
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/** waits a general amount of time */
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void busy_sleep(int ms) {
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for (int i = 0; i < ms; ++i) {
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busy_sleep_1ms();
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}
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}
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int strlen(const char* str) {
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int i = 0;
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while(str[i] != '\0') {
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i++;
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}
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return i;
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}
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void log(const char* stuff) {
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uart_writen(uart0, stuff, strlen(stuff));
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}
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int main() {
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while(1) {
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log("Hello, world!\r\n");
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busy_sleep(1000);
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}
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}
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