ARMmbed
/
mbed-os
mirror of https://github.com/ARMmbed/mbed-os.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Fix events-queue failure on low CPU frequency

pull/12604/head
Chun-Chieh Li 2020-03-20 11:07:07 +08:00
parent 9ddcdcde4e
commit c3473e421d
1 changed files with 11 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
TESTS/events/queue/main.cpp
View File

@ -34,6 +34,16 @@ using namespace utest::v1;
// (for more details about EVENTS_EVENT_SIZE see EventQueue constructor)
#define TEST_EQUEUE_SIZE (18*EVENTS_EVENT_SIZE)
// By empirical, we take 80MHz CPU/2ms delay as base tolerance for time left test.
// For higher CPU frequency, tolerance is fixed to 2ms.
// For lower CPU frequency, tolerance is inversely proportional to CPU frequency.
// E.g.:
// 100MHz: 2ms
// 80MHz: 2ms
// 64MHz: 3ms
// 48MHz: 4ms
#define ALLOWED_TIME_LEFT_TOLERANCE_MS ((SystemCoreClock >= 80000000) ? 2 : ((80000000 * 2 + SystemCoreClock - 1) / SystemCoreClock))
// flag for called
volatile bool touched = false;
@ -283,7 +293,7 @@ int timeleft_events[2];
void check_time_left(EventQueue *queue, int index, int expected)
{
const int event_id = timeleft_events[index];
TEST_ASSERT_INT_WITHIN(2, expected, queue->time_left(event_id));
TEST_ASSERT_INT_WITHIN(ALLOWED_TIME_LEFT_TOLERANCE_MS, expected, queue->time_left(event_id));
touched = true;
}