Correct ticks being returned from port_get_raw_ticks()

Issue #2958 . Correct calculation of usec back to ticks in port_get_raw_ticks().

1 files changed, 3 insertions, 2 deletions

diff --git a/ports/esp32s2/supervisor/port.c b/ports/esp32s2/supervisor/port.c
index 4c42f11af..f5a4ae48e 100644
--- a/ports/esp32s2/supervisor/port.c
+++ b/ports/esp32s2/supervisor/port.c
@@ -118,11 +118,12 @@ uint32_t port_get_saved_word(void) {
 uint64_t port_get_raw_ticks(uint8_t* subticks) {
     struct timeval tv_now;
     gettimeofday(&tv_now, NULL);
-    uint64_t all_subticks = (uint64_t)tv_now.tv_usec / 32768;
+    // convert usec back to ticks
+    uint64_t all_subticks = (uint64_t)tv_now.tv_usec / 1024;
     if (subticks != NULL) {
         *subticks = all_subticks % 32;
     }
-    return (uint64_t)tv_now.tv_sec * 1024L + all_subticks / 32;
+    return (uint64_t)tv_now.tv_sec * 1024L + all_subticks;
 }
 
 // Enable 1/1024 second tick.