1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
|
/*
* Copyright (C) 2018 Shanghai Eastsoft Microelectronics Co., Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Change Logs:
* Date Author Notes
* 2019-03-11 wangyq the first version
* 2019-11-01 wangyq update libraries
* 2021-04-20 liuhy the second version
*/
#include <rthw.h>
#include <rtthread.h>
#include <rtdevice.h>
#include <board.h>
#include "es_conf_info_pwm.h"
#ifdef RT_USING_PWM
static void pwm_set_duty(timer_handle_t *timer_initstruct, timer_channel_t ch, uint32_t ns)
{
uint64_t tmp = (uint64_t)ald_cmu_get_pclk1_clock() * ns / 1000000000 /
(timer_initstruct->init.prescaler + 1);
if (ch == TIMER_CHANNEL_1)
WRITE_REG(timer_initstruct->perh->CCVAL1, (uint32_t)tmp);
else if (ch == TIMER_CHANNEL_2)
WRITE_REG(timer_initstruct->perh->CCVAL2, (uint32_t)tmp);
else if (ch == TIMER_CHANNEL_3)
WRITE_REG(timer_initstruct->perh->CCVAL3, (uint32_t)tmp);
else if (ch == TIMER_CHANNEL_4)
WRITE_REG(timer_initstruct->perh->CCVAL4, (uint32_t)tmp);
}
static rt_err_t es32f0_pwm_control(struct rt_device_pwm *device, int cmd, void *arg)
{
rt_err_t ret = RT_EOK;
uint64_t _arr,bus_speed,tmp;
uint32_t _maxcnt,_ccep_ch_en = 0U;
timer_channel_t pwm_channel;
timer_oc_init_t tim_ocinit;
timer_handle_t *timer_initstruct = (timer_handle_t *)device->parent.user_data;
struct rt_pwm_configuration *cfg = (struct rt_pwm_configuration *)arg;
RT_ASSERT(timer_initstruct != RT_NULL);
/* select pwm output channel */
if (1 == cfg->channel)
{
pwm_channel = TIMER_CHANNEL_1;
_ccep_ch_en = timer_initstruct->perh->CCEP & TIMER_CCEP_CC1EN_MSK;
}
else if (2 == cfg->channel)
{
pwm_channel = TIMER_CHANNEL_2;
_ccep_ch_en = timer_initstruct->perh->CCEP & TIMER_CCEP_CC2EN_MSK;
}
else if (3 == cfg->channel)
{
pwm_channel = TIMER_CHANNEL_3;
_ccep_ch_en = timer_initstruct->perh->CCEP & TIMER_CCEP_CC3EN_MSK;
}
else if (4 == cfg->channel)
{
pwm_channel = TIMER_CHANNEL_4;
_ccep_ch_en = timer_initstruct->perh->CCEP & TIMER_CCEP_CC4EN_MSK;
}
else
return -RT_EINVAL;
switch (cmd)
{
case PWM_CMD_ENABLE:
ald_timer_pwm_start(timer_initstruct, pwm_channel);
break;
case PWM_CMD_DISABLE:
ald_timer_pwm_stop(timer_initstruct, pwm_channel);
break;
case PWM_CMD_SET:
/*当通道没开的时候：关通道，设置输出模式和极性，初始化通道*/
if(!_ccep_ch_en)
{
tim_ocinit.oc_mode = ES_PWM_OC_MODE;
tim_ocinit.oc_polarity = ES_PWM_OC_POLARITY;
tim_ocinit.oc_fast_en = DISABLE;
tim_ocinit.ocn_polarity = TIMER_OCN_POLARITY_HIGH;
tim_ocinit.ocn_idle = TIMER_OCN_IDLE_RESET;
tim_ocinit.oc_idle = TIMER_OC_IDLE_RESET;
ald_timer_oc_config_channel(timer_initstruct, &tim_ocinit, pwm_channel);
}
bus_speed = (uint64_t)ald_cmu_get_pclk1_clock();
/*外设的计数器最大值*/
_maxcnt = 0xFFFF;
/*当最大分频 <= _maxcnt时：估计大概的分频，加快速度 */
tmp = bus_speed * (cfg->period)/1000000000/_maxcnt;
timer_initstruct->init.prescaler = (tmp > 2U) ? (tmp - 2U) : 0U ; /*bus_speed < 500000000*/
/* count registers max , auto adjust prescaler */
do
{
_arr = bus_speed * (cfg->period) / 1000000000 /(++timer_initstruct->init.prescaler);
}
while (_arr > _maxcnt);
WRITE_REG(timer_initstruct->perh->AR, (uint32_t)_arr);
timer_initstruct->init.period = (uint32_t)_arr;
/* update prescaler */
WRITE_REG(timer_initstruct->perh->PRES, --timer_initstruct->init.prescaler);
pwm_set_duty(timer_initstruct, pwm_channel, cfg->pulse);
break;
case PWM_CMD_GET:
cfg->pulse = ald_timer_read_capture_value(timer_initstruct, pwm_channel) * 100 /
READ_REG(timer_initstruct->perh->AR);
break;
default:
break;
}
return ret;
}
const static struct rt_pwm_ops es32f0_pwm_ops =
{
es32f0_pwm_control
};
int rt_hw_pwm_init(void)
{
rt_err_t ret = RT_EOK;
gpio_init_t gpio_initstructure;
gpio_initstructure.mode = GPIO_MODE_OUTPUT;
gpio_initstructure.odos = GPIO_PUSH_PULL;
gpio_initstructure.pupd = GPIO_PUSH_UP;
gpio_initstructure.odrv = GPIO_OUT_DRIVE_NORMAL;
gpio_initstructure.flt = GPIO_FILTER_DISABLE;
gpio_initstructure.type = GPIO_TYPE_TTL;
#ifdef BSP_USING_AD16C4T0_PWM /* 4 channels */
static struct rt_device_pwm ad16c4t0_pwm_dev;
static timer_handle_t ad16c4t0_timer_initstruct;
ad16c4t0_timer_initstruct.perh = AD16C4T0;
ald_timer_pwm_init(&ad16c4t0_timer_initstruct);
/* gpio initialization */
#if defined(ES_AD16C4T0_CH1_GPIO_FUNC)&&defined(ES_AD16C4T0_CH1_GPIO_PORT)&&defined(ES_AD16C4T0_CH1_GPIO_PIN)
gpio_initstructure.func = ES_AD16C4T0_CH1_GPIO_FUNC;
ald_gpio_init(ES_AD16C4T0_CH1_GPIO_PORT, ES_AD16C4T0_CH1_GPIO_PIN, &gpio_initstructure);
#endif
#if defined(ES_AD16C4T0_CH2_GPIO_FUNC)&&defined(ES_AD16C4T0_CH2_GPIO_PORT)&&defined(ES_AD16C4T0_CH2_GPIO_PIN)
gpio_initstructure.func = ES_AD16C4T0_CH2_GPIO_FUNC;
ald_gpio_init(ES_AD16C4T0_CH2_GPIO_PORT, ES_AD16C4T0_CH2_GPIO_PIN, &gpio_initstructure);
#endif
#if defined(ES_AD16C4T0_CH3_GPIO_FUNC)&&defined(ES_AD16C4T0_CH3_GPIO_PORT)&&defined(ES_AD16C4T0_CH3_GPIO_FUNC)
gpio_initstructure.func = ES_AD16C4T0_CH3_GPIO_FUNC;
ald_gpio_init(ES_AD16C4T0_CH3_GPIO_PORT, ES_AD16C4T0_CH3_GPIO_PIN, &gpio_initstructure);
#endif
#if defined(ES_AD16C4T0_CH4_GPIO_FUNC)&&defined(ES_AD16C4T0_CH4_GPIO_PORT)&&defined(ES_AD16C4T0_CH4_GPIO_PIN)
gpio_initstructure.func = ES_AD16C4T0_CH4_GPIO_FUNC;
ald_gpio_init(ES_AD16C4T0_CH4_GPIO_PORT, ES_AD16C4T0_CH4_GPIO_PIN, &gpio_initstructure);
#endif
ret = rt_device_pwm_register(&ad16c4t0_pwm_dev, ES_DEVICE_NAME_AD16C4T0_PWM, &es32f0_pwm_ops,
&ad16c4t0_timer_initstruct);
#endif
#ifdef BSP_USING_GP16C4T0_PWM /* 4 channels */
static struct rt_device_pwm gp16c4t0_pwm_dev;
static timer_handle_t gp16c4t0_timer_initstruct;
gp16c4t0_timer_initstruct.perh = GP16C4T0;
ald_timer_pwm_init(&gp16c4t0_timer_initstruct);
/* gpio initialization */
#if defined(ES_GP16C4T0_CH1_GPIO_FUNC)&&defined(ES_GP16C4T0_CH1_GPIO_PORT)&&defined(ES_GP16C4T0_CH1_GPIO_PIN)
gpio_initstructure.func = ES_GP16C4T0_CH1_GPIO_FUNC;
ald_gpio_init(ES_GP16C4T0_CH1_GPIO_PORT, ES_GP16C4T0_CH1_GPIO_PIN, &gpio_initstructure);
#endif
#if defined(ES_GP16C4T0_CH2_GPIO_FUNC)&&defined(ES_GP16C4T0_CH2_GPIO_PORT)&&defined(ES_GP16C4T0_CH2_GPIO_PIN)
gpio_initstructure.func = ES_GP16C4T0_CH2_GPIO_FUNC;
ald_gpio_init(ES_GP16C4T0_CH2_GPIO_PORT, ES_GP16C4T0_CH2_GPIO_PIN, &gpio_initstructure);
#endif
#if defined(ES_GP16C4T0_CH3_GPIO_FUNC)&&defined(ES_GP16C4T0_CH3_GPIO_PORT)&&defined(ES_GP16C4T0_CH3_GPIO_PIN)
gpio_initstructure.func = ES_GP16C4T0_CH3_GPIO_FUNC;
ald_gpio_init(ES_GP16C4T0_CH3_GPIO_PORT, ES_GP16C4T0_CH3_GPIO_PIN, &gpio_initstructure);
#endif
#if defined(ES_GP16C4T0_CH4_GPIO_FUNC)&&defined(ES_GP16C4T0_CH4_GPIO_PORT)&&defined(ES_GP16C4T0_CH4_GPIO_PIN)
gpio_initstructure.func = ES_GP16C4T0_CH4_GPIO_FUNC;
ald_gpio_init(ES_GP16C4T0_CH4_GPIO_PORT, ES_GP16C4T0_CH4_GPIO_PIN, &gpio_initstructure);
#endif
ret = rt_device_pwm_register(&gp16c4t0_pwm_dev, ES_DEVICE_NAME_GP16C4T0_PWM, &es32f0_pwm_ops,
&gp16c4t0_timer_initstruct);
#endif
#ifdef BSP_USING_GP16C2T0_PWM /* 2 channels */
static struct rt_device_pwm gp16c2t0_pwm_dev;
static timer_handle_t gp16c2t0_timer_initstruct;
gp16c2t0_timer_initstruct.perh = GP16C2T0;
ald_timer_pwm_init(&gp16c2t0_timer_initstruct);
/* gpio initialization */
#if defined(ES_GP16C2T0_CH1_GPIO_FUNC)&&defined(ES_GP16C2T0_CH1_GPIO_PORT)&&defined(ES_GP16C2T0_CH1_GPIO_PIN)
gpio_initstructure.func = ES_GP16C2T0_CH1_GPIO_FUNC;
ald_gpio_init(ES_GP16C2T0_CH1_GPIO_PORT, ES_GP16C2T0_CH1_GPIO_PIN, &gpio_initstructure);
#endif
#if defined(ES_GP16C2T0_CH2_GPIO_FUNC)&&defined(ES_GP16C2T0_CH2_GPIO_PORT)&&defined(ES_GP16C2T0_CH2_GPIO_PIN)
gpio_initstructure.func = ES_GP16C2T0_CH2_GPIO_FUNC;
ald_gpio_init(ES_GP16C2T0_CH2_GPIO_PORT, ES_GP16C2T0_CH2_GPIO_PIN, &gpio_initstructure);
#endif
ret = rt_device_pwm_register(&gp16c2t0_pwm_dev, ES_DEVICE_NAME_GP16C2T0_PWM, &es32f0_pwm_ops,
&gp16c2t0_timer_initstruct);
#endif
#ifdef BSP_USING_GP16C2T1_PWM /* 2 channels */
static struct rt_device_pwm gp16c2t1_pwm_dev;
static timer_handle_t gp16c2t1_timer_initstruct;
gp16c2t1_timer_initstruct.perh = GP16C2T1;
ald_timer_pwm_init(&gp16c2t1_timer_initstruct);
/* gpio initialization */
#if defined(ES_GP16C2T1_CH1_GPIO_FUNC)&&defined(ES_GP16C2T1_CH1_GPIO_PORT)&&defined(ES_GP16C2T1_CH1_GPIO_PIN)
gpio_initstructure.func = ES_GP16C2T1_CH1_GPIO_FUNC;
ald_gpio_init(ES_GP16C2T1_CH1_GPIO_PORT, ES_GP16C2T1_CH1_GPIO_PIN, &gpio_initstructure);
#endif
#if defined(ES_GP16C2T1_CH2_GPIO_FUNC)&&defined(ES_GP16C2T1_CH2_GPIO_PORT)&&defined(ES_GP16C2T1_CH2_GPIO_PIN)
gpio_initstructure.func = ES_GP16C2T1_CH2_GPIO_FUNC;
ald_gpio_init(ES_GP16C2T1_CH2_GPIO_PORT, ES_GP16C2T1_CH2_GPIO_PIN, &gpio_initstructure);
#endif
ret = rt_device_pwm_register(&gp16c2t1_pwm_dev, ES_DEVICE_NAME_GP16C2T1_PWM, &es32f0_pwm_ops,
&gp16c2t1_timer_initstruct);
#endif
return ret;
}
INIT_DEVICE_EXPORT(rt_hw_pwm_init);
#endif
|
