GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

mcu/riscv/drivers/stopwatch/Makefile

@@ -0,0 +1,2 @@
+
+SRCS-y += stopwatch.c

mcu/riscv/drivers/stopwatch/stopwatch.c

@@ -0,0 +1,27 @@
+
+#include <sys/types.h>
+#include <platform.h>
+#include <io.h>
+
+typedef union {
+	u32 value;
+	struct {
+		/* [0] timer trigger */
+		u32 timer_trigger : 1;
+		/* [2] timer clear */
+		u32 timer_clear : 1;
+		/* [3] running timer trigger */
+		u32 running_timer_trigger : 1;
+		/* [3:31] reserved */
+		u32 reserved : 29;
+	};
+} stopwatch_cfg;
+
+void stopwatch_trigger(void)
+{
+	stopwatch_cfg cfg = {0};
+
+	cfg.timer_clear = 0; /* false */
+	cfg.timer_trigger = 1; /* true */
+	writel(cfg.value, (STOPWATCH_CTRL_REG2));
+}