From ab88fa8455f3450d1e79846adf9f2a907cd51ced Mon Sep 17 00:00:00 2001
From: zhji <jzhgonha@163.com>
Date: Mon, 2 Jun 2025 21:34:05 +0800
Subject: [PATCH] [feat] add timer_delay_us function

---
 driver/inc/timer.h | 1 +
 driver/src/timer.c | 7 +++++++
 2 files changed, 8 insertions(+)

diff --git a/driver/inc/timer.h b/driver/inc/timer.h
index 2b8530f..a8f784d 100644
--- a/driver/inc/timer.h
+++ b/driver/inc/timer.h
@@ -21,6 +21,7 @@ uint32_t timer_count_h_read_raw(void);
 void timer_start(void);
 void timer_stop(void);
 int timer_is_stopped(void);
+void timer_delay_us(uint32_t us);
 
 void timer_alarm_set(uint8_t alarm_id, uint32_t alarm_count);
 uint32_t timer_alarm_get(uint8_t alarm_id);
diff --git a/driver/src/timer.c b/driver/src/timer.c
index 63d1002..a0a732d 100644
--- a/driver/src/timer.c
+++ b/driver/src/timer.c
@@ -44,6 +44,13 @@ int timer_is_stopped(void)
     }
 }
 
+void timer_delay_us(uint32_t us)
+{
+    uint64_t time = timer_count_read();
+    time += us;
+    while (timer_count_read() < time);
+}
+
 void timer_alarm_set(uint8_t alarm_id, uint32_t alarm_count)
 {
     if (alarm_id >= TIMER_ALARM_MAX) {