From b877701d96de0fff7611c7c3be1b5aa78922e0db Mon Sep 17 00:00:00 2001
From: andy <1414772332@qq.com>
Date: Thu, 9 Jan 2025 14:28:39 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0cpu=E6=97=B6=E9=92=9F?=
 =?UTF-8?q?=E5=91=A8=E6=9C=9F=E5=BB=B6=E6=97=B6?=
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---
 driver/src/hal/clock.c | 20 ++++++++++++++++++++
 inc/driver/iot_clock.h |  2 ++
 2 files changed, 22 insertions(+)

diff --git a/driver/src/hal/clock.c b/driver/src/hal/clock.c
index 82bf943..c0c753f 100644
--- a/driver/src/hal/clock.c
+++ b/driver/src/hal/clock.c
@@ -65,6 +65,26 @@ void IRAM_ATTR iot_delay_us_cpu_cycle(uint32_t us)
     }
 }
 
+void IRAM_ATTR iot_delay_cpu_cycle(uint32_t c)
+{
+    uint64_t start, now;
+    uint64_t cycle = c;
+
+    start = cpu_get_mcycle();
+
+    while(1) {
+        now = cpu_get_mcycle();
+        if (now >= start) {
+            if((now - start) > cycle)
+                break;
+        } else {
+            if(((uint64_t)(-1) - start + now) > cycle)
+                break;
+         }
+    }
+}
+
+
 void system_cpu_sleep(bool_t tick)
 {
     clk_sys_sleep(tick);
diff --git a/inc/driver/iot_clock.h b/inc/driver/iot_clock.h
index aceb83d..a871517 100644
--- a/inc/driver/iot_clock.h
+++ b/inc/driver/iot_clock.h
@@ -36,6 +36,8 @@ void iot_delay_us(uint32_t us);
  */
 void iot_delay_us_cpu_cycle(uint32_t us);
 
+void iot_delay_cpu_cycle(uint32_t c);
+
 void system_cpu_sleep();
 
 void system_cpu_wakeup();