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/*
* Copyright 2021 Daniel Friesel
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "arch.h"
#ifdef TIMER_S
#include "driver/uptime.h"
#endif
extern "C" {
#include "lm4f_cpp_wrapper.h"
};
#ifdef __acweaving
#define __delay_cycles(x)
#endif
void Arch::setup(void)
{
arch_clock_init();
#if defined(WITH_LOOP)
arch_init_loop();
#endif
}
#ifdef WITH_WAKEUP
extern void wakeup();
#endif
#if defined(WITH_LOOP)
extern void loop();
extern volatile char run_loop;
#endif
// for 80 MHz
void Arch::delay_us(unsigned int const us)
{
volatile int x = us * 77;
while (x--) {
__asm("nop");
}
}
void Arch::delay_ms(unsigned int const ms)
{
for (unsigned int i = 0; i < ms; i++) {
volatile int x = 10000;
while (x--) {
__asm("nop");
}
}
}
void Arch::idle_loop(void)
{
while (1) {
__asm__("wfi");
#ifdef WITH_LOOP
if (run_loop) {
#ifdef TIMER_S
uptime.tick_s();
#endif
loop();
run_loop = 0;
}
#endif
}
}
void Arch::idle(void)
{
__asm__("wfi");
#ifdef WITH_WAKEUP
wakeup();
#endif
}
Arch arch;
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