mhu/reflow-oven-control-sw
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Fix some coding issues and a possible race condition

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This commit is contained in:
Mario Hüttel
2021-10-15 21:16:26 +02:00
parent 6fde4cfd66
commit d9c145ec81
3 changed files with 10 additions and 9 deletions
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9
stm-firmware/ui/button.c
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@@ -53,6 +53,7 @@ void button_init()
enum button_state button_read_event()
{
uint64_t time_delta;
uint64_t activation_stmp;
enum button_state temp_state;
if (override_state != BUTTON_IDLE) {
@@ -66,7 +67,13 @@ enum button_state button_read_event()
int_state = BUTTON_IDLE;
return temp_state;
} else {
time_delta = systick_get_global_tick() - to_active_timestamp;
/* Unfortunately I don't jave a better idea for now to ensure,
* that to_active_timestamp is read atomically
*/
__disable_irq();
activation_stmp = to_active_timestamp;
__enable_irq();
time_delta = systick_get_global_tick() - activation_stmp;
if (time_delta >= BUTTON_LONG_ON_TIME_MS)
return BUTTON_LONG;
else if (time_delta >= BUTTON_SHORT_ON_TIME_MS)