diff options
Diffstat (limited to 'esp8266/ets_alt_task.c')
| -rw-r--r-- | esp8266/ets_alt_task.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/esp8266/ets_alt_task.c b/esp8266/ets_alt_task.c index ef1d8aaede..6434f23660 100644 --- a/esp8266/ets_alt_task.c +++ b/esp8266/ets_alt_task.c @@ -110,10 +110,22 @@ bool ets_post(uint8 prio, os_signal_t sig, os_param_t param) { int ets_loop_iter_disable = 0; +// to implement a 64-bit wide microsecond counter +static uint32_t system_time_prev = 0; +uint32_t system_time_high_word = 0; + bool ets_loop_iter(void) { if (ets_loop_iter_disable) { return false; } + + // handle overflow of system microsecond counter + uint32_t system_time_cur = system_get_time(); + if (system_time_cur < system_time_prev) { + system_time_high_word += 1; // record overflow of low 32-bits + } + system_time_prev = system_time_cur; + //static unsigned cnt; bool progress = false; for (volatile struct task_entry *t = emu_tasks; t < &emu_tasks[MP_ARRAY_SIZE(emu_tasks)]; t++) { |