From 5a32ca10ad2288cf1b2d88187353cd80b95c97fb Mon Sep 17 00:00:00 2001
From: Omar Chebib <omar.chebib@espressif.com>
Date: Mon, 5 Feb 2024 16:54:42 +0800
Subject: [PATCH] feat(lp_core): add a public function to get the timer cycle
 count

Closes https://github.com/espressif/esp-idf/issues/13101
---
 .../lp_core/shared/include/ulp_lp_core_lp_timer_shared.h | 9 ++++++++-
 .../ulp/lp_core/shared/ulp_lp_core_lp_timer_shared.c     | 6 +++---
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/components/ulp/lp_core/shared/include/ulp_lp_core_lp_timer_shared.h b/components/ulp/lp_core/shared/include/ulp_lp_core_lp_timer_shared.h
index 284e8d39049e..dda58dc843c5 100644
--- a/components/ulp/lp_core/shared/include/ulp_lp_core_lp_timer_shared.h
+++ b/components/ulp/lp_core/shared/include/ulp_lp_core_lp_timer_shared.h
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2023-2024 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -11,6 +11,13 @@
 extern "C" {
 #endif
 
+/**
+ * @brief Get the number of cycle count for the LP timer
+ *
+ * @return current timer cycle count
+ */
+uint64_t ulp_lp_core_lp_timer_get_cycle_count(void);
+
 /**
  * @brief Sets the next wakeup alarm
  *
diff --git a/components/ulp/lp_core/shared/ulp_lp_core_lp_timer_shared.c b/components/ulp/lp_core/shared/ulp_lp_core_lp_timer_shared.c
index 32a7690f7ff9..ff1c4edc9788 100644
--- a/components/ulp/lp_core/shared/ulp_lp_core_lp_timer_shared.c
+++ b/components/ulp/lp_core/shared/ulp_lp_core_lp_timer_shared.c
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2023-2024 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -21,7 +21,7 @@ static void lp_timer_hal_set_alarm_target(uint64_t value)
     lp_timer_ll_set_target_enable(lp_timer_context.dev, TIMER_ID, true);
 }
 
-static uint64_t lp_timer_hal_get_cycle_count(void)
+uint64_t ulp_lp_core_lp_timer_get_cycle_count(void)
 {
     lp_timer_ll_counter_snapshot(lp_timer_context.dev);
 
@@ -38,7 +38,7 @@ static uint64_t lp_timer_hal_get_cycle_count(void)
 
 void ulp_lp_core_lp_timer_set_wakeup_time(uint64_t sleep_duration_us)
 {
-    uint64_t cycle_cnt = lp_timer_hal_get_cycle_count();
+    uint64_t cycle_cnt = ulp_lp_core_lp_timer_get_cycle_count();
     uint64_t alarm_target = cycle_cnt + sleep_duration_us * (1 << RTC_CLK_CAL_FRACT) / clk_ll_rtc_slow_load_cal();
 
     lp_timer_hal_set_alarm_target(alarm_target);