加入定时器设备

2 files changed, 87 insertions, 0 deletions

diff --git a/components/drivers/include/drivers/hwtimer.h b/components/drivers/include/drivers/hwtimer.h
new file mode 100644
index 0000000000..e5b5d4661b
--- /dev/null
+++ b/components/drivers/include/drivers/hwtimer.h
@@ -0,0 +1,83 @@
+#ifndef __HWTIMER_H__
+#define __HWTIMER_H__
+
+#include <rtthread.h>
+#include <rtdevice.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* ��ʱ���������� */
+typedef enum
+{
+    HWTIMER_CTRL_TIMEOUT_SET = 0x01, /* ���ó�ʱֵ */
+    HWTIMER_CTRL_FREQ_SET,           /* ���ü���Ƶ�� */
+    HWTIMER_CTRL_START,              /* ������ʱ�� */
+    HWTIMER_CTRL_STOP,               /* ֹͣ��ʱ�� */
+    HWTIMER_CTRL_INFO_GET,           /* ��ȡ��ʱ��������Ϣ */
+    HWTIMER_CTRL_MODE_SET            /* ���ö�ʱģʽ */
+} rt_hwtimer_ctrl_t;
+
+/* ��ʱģʽ */
+typedef enum
+{
+    HWTIMER_MODE_ONESHOT = 0x01,
+    HWTIMER_MODE_PERIOD
+} rt_hwtimer_mode_t;
+
+/* ��ʱ������ֵ */
+typedef struct rt_hwtimerval
+{
+    rt_int32_t sec;      /* �� */
+    rt_int32_t usec;     /* ΢�� */
+} rt_hwtimerval_t;
+
+#define HWTIMER_CNTMODE_UP      0x01 /* ��ʱ������������ʽ */
+#define HWTIMER_CNTMODE_DW      0x02 /* ��ʱ���ݼ�������ʽ */
+
+struct rt_hwtimer_device;
+
+struct rt_hwtimer_ops
+{
+    void (*init)(struct rt_hwtimer_device *timer);
+    void (*deinit)(struct rt_hwtimer_device *timer);
+    void (*start)(struct rt_hwtimer_device *timer, rt_hwtimer_mode_t mode);
+    void (*stop)(struct rt_hwtimer_device *timer);
+    rt_err_t (*timeout_set)(struct rt_hwtimer_device *timer, rt_uint32_t t);
+    rt_uint32_t (*count_get)(struct rt_hwtimer_device *timer);
+    rt_err_t (*control)(struct rt_hwtimer_device *timer, rt_uint32_t cmd, void *args);
+};
+
+/* ��ʱ����������(���ɶ�̬����) */
+struct rt_hwtimer_info
+{
+    rt_int32_t maxfreq;    /* ��ʱ��֧�ֵ�������ʱ�� */
+    rt_int32_t minfreq;    /* ��ʱ��֧�ֵ���С����ʱ�� */
+    rt_uint32_t maxcnt;    /* ���������ʱֵ */
+    rt_uint8_t  cntmode;   /* ����ģʽ(����/�ݼ�,Ӧ�ò�������Ĵ˲���) */
+};
+
+typedef struct rt_hwtimer_device
+{
+    struct rt_device parent;
+    const struct rt_hwtimer_ops *ops;
+    const struct rt_hwtimer_info *info;
+
+    /* �����㲻�ù������²��� */
+    rt_int32_t freq;                /* ����Ƶ�� */
+    rt_int32_t overflow;            /* ������� */
+    float period_sec;               /* �������(s) */
+    rt_int32_t cycles;              /* ѭ������ */
+    rt_int32_t reload;              /* ����cycles */
+    rt_hwtimer_mode_t mode;         /* ��ʱģʽ */
+} rt_hwtimer_t;
+
+rt_err_t rt_device_hwtimer_register(rt_hwtimer_t *timer, const char *name, void *user_data);
+void rt_device_hwtimer_isr(rt_hwtimer_t *timer);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/components/drivers/include/rtdevice.h b/components/drivers/include/rtdevice.h
index f4d967831c..475adebf80 100644
--- a/components/drivers/include/rtdevice.h
+++ b/components/drivers/include/rtdevice.h
@@ -370,6 +370,10 @@ rt_inline void rt_work_init(struct rt_work* work, void (*work_func)(struct rt_wo
 #include "drivers/can.h"
 #endif
 
+#ifdef RT_USING_HWTIMER
+#include "drivers/hwtimer.h"
+#endif
+
 #ifdef __cplusplus
 }
 #endif