1 /*
2 * Copyright (c) 2006-2022, Synwit Technology Co.,Ltd.
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 *
6 * Change Logs:
7 * Date Author Notes
8 * 2018-12-10 Zohar_Lee first version
9 * 2020-07-10 lik format file
10 */
11
12 #include "drv_wdt.h"
13
14 #ifdef RT_USING_WDT
15 #ifdef BSP_USING_WDT
16 //#define DRV_DEBUG
17 #define LOG_TAG "drv.wdt"
18 #include <drv_log.h>
19
20 struct swm_wdt_cfg
21 {
22 const char *name;
23 WDT_TypeDef *WDTx;
24 };
25
26 struct swm_wdt_device
27 {
28 struct swm_wdt_cfg *wdt_cfg;
29 struct rt_watchdog_device wdt_device;
30 };
31
32 static struct swm_wdt_cfg swm_wdt_cfg =
33 {
34 .name = "wdt",
35 .WDTx = WDT,
36 };
37
38 static struct swm_wdt_device wdt_obj;
39
swm_wdt_configure(rt_watchdog_t * wdt_device)40 static rt_err_t swm_wdt_configure(rt_watchdog_t *wdt_device)
41 {
42 return RT_EOK;
43 }
44
swm_wdt_control(rt_watchdog_t * wdt_device,int cmd,void * arg)45 static rt_err_t swm_wdt_control(rt_watchdog_t *wdt_device, int cmd, void *arg)
46 {
47 struct swm_wdt_cfg *wdt_cfg;
48 RT_ASSERT(wdt_device != RT_NULL);
49 wdt_cfg = wdt_device->parent.user_data;
50
51 switch (cmd)
52 {
53 case RT_DEVICE_CTRL_WDT_KEEPALIVE:
54 WDT_Feed(wdt_cfg->WDTx);
55 break;
56 case RT_DEVICE_CTRL_WDT_SET_TIMEOUT:
57 WDT_Init(wdt_cfg->WDTx, (SystemCoreClock * (*(rt_uint32_t *)arg)), WDT_MODE_RESET);
58 break;
59 case RT_DEVICE_CTRL_WDT_GET_TIMEOUT:
60 *(rt_uint32_t *)arg = (wdt_cfg->WDTx->LOAD) / SystemCoreClock;
61 break;
62 case RT_DEVICE_CTRL_WDT_GET_TIMELEFT:
63 *(rt_uint32_t *)arg = WDT_GetValue(wdt_cfg->WDTx) / SystemCoreClock;
64 break;
65 case RT_DEVICE_CTRL_WDT_START:
66 WDT_Start(wdt_cfg->WDTx);
67 break;
68 case RT_DEVICE_CTRL_WDT_STOP:
69 WDT_Stop(wdt_cfg->WDTx);
70 break;
71 default:
72 LOG_W("This command is not supported.");
73 return -RT_ERROR;
74 }
75
76 return RT_EOK;
77 }
78
79 static const struct rt_watchdog_ops swm_wdt_ops =
80 {
81 .init = swm_wdt_configure,
82 .control = swm_wdt_control};
83
swm_wdt_init(void)84 int swm_wdt_init(void)
85 {
86 int result = RT_EOK;
87
88 wdt_obj.wdt_cfg = &swm_wdt_cfg;
89 wdt_obj.wdt_device.ops = &swm_wdt_ops;
90
91 result = rt_hw_watchdog_register(&wdt_obj.wdt_device, wdt_obj.wdt_cfg->name, RT_DEVICE_FLAG_RDWR, wdt_obj.wdt_cfg);
92 if(result != RT_EOK)
93 {
94 LOG_E("wdt device register fail.");
95 }
96 else
97 {
98 LOG_D("wdt device register success.");
99 }
100 return RT_EOK;
101 }
102 INIT_BOARD_EXPORT(swm_wdt_init);
103
104 #endif /* BSP_USING_WDT */
105 #endif /* RT_USING_WDT */
106