commit 5357dad52efbe5773f4beda7ad014dc62ad8e44f
author Damien George <damien.p.george@gmail.com> Wed May 22 15:05:03 2019 +1000
committer Damien George <damien.p.george@gmail.com> Fri May 24 15:37:34 2019 +1000
tree 777a3d888b3437f1b0aa5cb756fa3b1a47a5b586
parent c4a6d9c631a3e529aeedeaf5c24fa1bd748d493f

esp8266: Fix ticks_ms to correctly handle wraparound of system counter.

Fixes issue #4795.

ports/esp8266/esp_mphal.c

diff --git a/ports/esp8266/esp_mphal.c b/ports/esp8266/esp_mphal.c
index df97a73..351bf52 100644
--- a/ports/esp8266/esp_mphal.c
+++ b/ports/esp8266/esp_mphal.c
@@ -120,7 +120,9 @@
 }
 
 uint32_t mp_hal_ticks_ms(void) {
-    return ((uint64_t)system_time_high_word << 32 | (uint64_t)system_get_time()) / 1000;
+    // Compute milliseconds from 64-bit microsecond counter
+    system_time_update();
+    return ((uint64_t)system_time_high_word << 32 | (uint64_t)system_time_low_word) / 1000;
 }
 
 uint32_t mp_hal_ticks_us(void) {