hpw422移植新的sdk

2026-07-03 18:08:25 +08:00
commit 945a5a5b0b
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+/*!
+ * \file      xc_drv_systick.c
+ *
+ * \brief     Target xinchip systick driver implementation
+ *
+ * \copyright Revised BSD License, see section \ref LICENSE.
+ *
+ * \code
+ *
+ *            _  __ _       ________    _
+ *           | |/ /(_)___  / ____/ /_  (_)___
+ *           |   // / __ \/ /   / __ \/ / __ \
+ *          /   |/ / / / / /___/ / / / / /_/ /
+ *         /_/|_/_/_/ /_/\____/_/ /_/_/ .___/
+ *                                   /_/
+ *           (C) 2022-2025 XinChip
+ *
+ * \endcode
+ *
+ * \author     ( XinChip ) Alex-J
+ *
+ * \author     ( XinChip )
+ */
+
+/*-----------------------------------------------------------------------------------
+                                       INCLUDE HEADE FILES
+ ------------------------------------------------------------------------------------*/
+#include "xc_drv_systick.h"
+#include "xc_drv_clock.h"
+#if XC_CHECK(XC_SYSTICK_ENABLED)
+/*------------------------------------------------------------------------------------
+                                            Functions
+ -------------------------------------------------------------------------------------*/
+
+void SysTick_Handler(void) { systick_callback(); }
+
+void delay_us(uint32_t nus)
+{
+    if (nus == 0)
+        return;
+
+    uint32_t unit = xc_systick_unit_get();
+
+    uint32_t temp;
+
+    SysTick->CTRL = 0x00; // 关闭计数器
+    SysTick->LOAD = unit * nus - unit + 1;
+
+    SysTick->VAL  = 0;
+    SysTick->CTRL = 0x05;
+
+    do {
+        temp = SysTick->CTRL; // 读取当前倒计数值
+    } while ((temp & 0x01) && (!(temp & (1 << 16))));
+}
+
+void delay_ms(uint32_t nms)
+{
+    if (nms == 0) {
+        return;
+    }
+
+    do {
+        delay_us(1000);
+    } while (--nms);
+}
+
+__WEAK void systick_callback(void) {}
+#endif // XC_CHECK(XC_SYSTICK_ENABLED)