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@@ -1,28 +1,35 @@
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-/*
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- * Copyright (c) 2006-2023, RT-Thread Development Team
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- *
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- * SPDX-License-Identifier: Apache-2.0
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- *
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- * Change Logs:
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- * Date Author Notes
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- * 2023-06-14 muaxiaohei first version
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- */
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-
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-#include <rtthread.h>
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-#include "drv_common.h"
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-
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-void rt_hw_us_delay(rt_uint32_t us)
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-{
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- uint64_t total_delay_ticks, us_ticks, start, now, delta, reload;
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-
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- start = SysTick->CNT;
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- reload = SysTick->CMP;
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- us_ticks = SystemCoreClock / 8000000UL;
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- total_delay_ticks = (uint32_t)us * us_ticks;
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- RT_ASSERT(total_delay_ticks < reload);
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-
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- do{
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- now = SysTick->CNT;
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- delta = start > now ? start - now : reload + start - now;
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- }while(delta < total_delay_ticks);
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-}
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+/*
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+ * Copyright (c) 2006-2023, RT-Thread Development Team
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+ *
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+ * SPDX-License-Identifier: Apache-2.0
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+ *
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+ * Change Logs:
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+ * Date Author Notes
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+ * 2023-06-14 muaxiaohei first version
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+ */
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+
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+#include <rtthread.h>
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+#include "drv_common.h"
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+
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+#define DBG_TAG "drv.common"
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+#define DBG_LVL DBG_INFO
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+#include <rtdbg.h>
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+
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+void rt_hw_us_delay(rt_uint32_t us)
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+{
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+ rt_uint64_t total_delay_ticks, us_ticks, start, now, delta, reload;
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+
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+ start = SysTick->CNT;
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+ reload = SysTick->CMP;
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+ us_ticks = SystemCoreClock / 8000000UL;
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+ total_delay_ticks = us * us_ticks;
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+ if (total_delay_ticks >= reload)
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+ {
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+ LOW_E("rt_hw_us_delay: the us parameter exceeds the maximum limit!");
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+ }
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+
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+ do {
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+ now = SysTick->CNT;
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+ delta = start > now ? start - now : reload + start - now;
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+ } while(delta < total_delay_ticks);
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+}
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