/**
*
* @brief Test the k_cpu_idle() routine
*
* This tests the k_cpu_idle() routine. The first thing it does is align to
* a tick boundary. The only source of interrupts while the test is running is
* expected to be the tick clock timer which should wake the CPU. Thus after
* each call to k_cpu_idle(), the tick count should be one higher.
*
* @return TC_PASS on success
* @return TC_FAIL on failure
*/
static int test_kernel_cpu_idle(int atomic)
{
int tms; /* current time in millisecond */
int i; /* loop variable */
/* Align to a "ms boundary". */
tms = k_uptime_get_32();
while (tms == k_uptime_get_32()) {
}
tms = k_uptime_get_32();
for (i = 0; i < 5; i++) { /* Repeat the test five times */
if (atomic) {
unsigned int key = irq_lock();
k_cpu_atomic_idle(key);
} else {
k_cpu_idle();
}
/* calculating milliseconds per tick*/
tms += sys_clock_us_per_tick / USEC_PER_MSEC;
if (k_uptime_get_32() < tms) {
return TC_FAIL;
}
}
return TC_PASS;
}
/**
*
* @brief Test the k_cpu_idle() routine
*
* This tests the k_cpu_idle() routine. The first thing it does is align to
* a tick boundary. The only source of interrupts while the test is running is
* expected to be the tick clock timer which should wake the CPU. Thus after
* each call to k_cpu_idle(), the tick count should be one higher.
*
* @return TC_PASS on success
* @return TC_FAIL on failure
*/
static int test_kernel_cpu_idle(int atomic)
{
int tms, tms2;; /* current time in millisecond */
int i; /* loop variable */
/* Align to a "ms boundary". */
tms = k_uptime_get_32();
while (tms == k_uptime_get_32()) {
}
tms = k_uptime_get_32();
for (i = 0; i < 5; i++) { /* Repeat the test five times */
if (atomic) {
unsigned int key = irq_lock();
k_cpu_atomic_idle(key);
} else {
k_cpu_idle();
}
/* calculating milliseconds per tick*/
tms += sys_clock_us_per_tick / USEC_PER_MSEC;
tms2 = k_uptime_get_32();
if (tms2 < tms) {
TC_ERROR("Bad ms per tick value computed, got %d which is less than %d\n",
tms2, tms);
return TC_FAIL;
}
}
return TC_PASS;
}
