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esp8266: Extend system microsecond counter to 64-bits; use in ticks_ms.

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So now ticks_ms can count up to the full 30 bits.  Fixes issue #2412.
This commit is contained in:
Damien George
2016-09-20 14:28:17 +10:00
parent cc7c311b5e
commit 34e0198436
3 changed files with 15 additions and 1 deletions
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12
esp8266/ets_alt_task.c
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@@ -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++) {