1 /*
2 * Copyright (C) 2018 Shanghai Eastsoft Microelectronics Co., Ltd.
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 *
6 * Licensed under the Apache License, Version 2.0 (the License); you may
7 * not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 * www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an AS IS BASIS, WITHOUT
14 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 *
18 * Change Logs:
19 * Date Author Notes
20 * 2019-03-11 wangyq the first version
21 * 2019-11-01 wangyq update libraries
22 * 2021-04-20 liuhy the second version
23 */
24
25 #include <rthw.h>
26 #include <rtthread.h>
27 #include <rtdevice.h>
28 #include <board.h>
29 #include "es_conf_info_pwm.h"
30
31
32 #ifdef RT_USING_PWM
33
pwm_set_duty(ald_timer_handle_t * timer_initstruct,ald_timer_channel_t ch,uint32_t ns)34 static void pwm_set_duty(ald_timer_handle_t *timer_initstruct, ald_timer_channel_t ch, uint32_t ns)
35 {
36 uint64_t tmp = (uint64_t)ald_cmu_get_pclk_clock() * ns / 1000000000 /
37 (timer_initstruct->init.prescaler + 1);
38
39 if (ch == ALD_TIMER_CHANNEL_1)
40 WRITE_REG(timer_initstruct->perh->CCVAL1, (uint32_t)tmp);
41 else if (ch == ALD_TIMER_CHANNEL_2)
42 WRITE_REG(timer_initstruct->perh->CCVAL2, (uint32_t)tmp);
43 else if (ch == ALD_TIMER_CHANNEL_3)
44 WRITE_REG(timer_initstruct->perh->CCVAL3, (uint32_t)tmp);
45 else if (ch == ALD_TIMER_CHANNEL_4)
46 WRITE_REG(timer_initstruct->perh->CCVAL4, (uint32_t)tmp);
47 }
48
es32f3_pwm_control(struct rt_device_pwm * device,int cmd,void * arg)49 static rt_err_t es32f3_pwm_control(struct rt_device_pwm *device, int cmd, void *arg)
50 {
51 rt_err_t ret = RT_EOK;
52 uint64_t _arr,bus_speed,tmp;
53 uint32_t _maxcnt,_ccep_ch_en = 0U;
54 ald_timer_channel_t pwm_channel;
55 ald_timer_oc_init_t tim_ocinit;
56 ald_timer_handle_t *timer_initstruct = (ald_timer_handle_t *)device->parent.user_data;
57 struct rt_pwm_configuration *cfg = (struct rt_pwm_configuration *)arg;
58
59 RT_ASSERT(timer_initstruct != RT_NULL);
60
61
62 /* select pwm output channel */
63 if (1 == cfg->channel)
64 {
65 pwm_channel = ALD_TIMER_CHANNEL_1;
66 _ccep_ch_en = timer_initstruct->perh->CCEP & TIMER_CCEP_CC1EN_MSK;
67 }
68 else if (2 == cfg->channel)
69 {
70 pwm_channel = ALD_TIMER_CHANNEL_2;
71 _ccep_ch_en = timer_initstruct->perh->CCEP & TIMER_CCEP_CC2EN_MSK;
72 }
73 else if (3 == cfg->channel)
74 {
75 pwm_channel = ALD_TIMER_CHANNEL_3;
76 _ccep_ch_en = timer_initstruct->perh->CCEP & TIMER_CCEP_CC3EN_MSK;
77 }
78 else if (4 == cfg->channel)
79 {
80 pwm_channel = ALD_TIMER_CHANNEL_4;
81 _ccep_ch_en = timer_initstruct->perh->CCEP & TIMER_CCEP_CC4EN_MSK;
82 }
83 else
84 return RT_EINVAL;
85
86 switch (cmd)
87 {
88 case PWM_CMD_ENABLE:
89 ald_timer_pwm_start(timer_initstruct, pwm_channel);
90 break;
91
92 case PWM_CMD_DISABLE:
93 ald_timer_pwm_stop(timer_initstruct, pwm_channel);
94 break;
95
96 case PWM_CMD_SET:
97
98 /*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*/
99 if(!_ccep_ch_en)
100 {
101 tim_ocinit.oc_mode = ES_PWM_OC_MODE;
102 tim_ocinit.oc_polarity = ES_PWM_OC_POLARITY;
103 tim_ocinit.oc_fast_en = DISABLE;
104 tim_ocinit.ocn_polarity = ALD_TIMER_OCN_POLARITY_HIGH;
105 tim_ocinit.ocn_idle = ALD_TIMER_OCN_IDLE_RESET;
106 tim_ocinit.oc_idle = ALD_TIMER_OC_IDLE_RESET;
107
108 ald_timer_oc_config_channel(timer_initstruct, &tim_ocinit, pwm_channel);
109 }
110
111 bus_speed = (uint64_t)ald_cmu_get_pclk_clock();
112
113 /*判断外设的计数器最大值*/
114 #ifdef ES32F36xx
115 if((timer_initstruct->perh == GP32C4T0)||(timer_initstruct->perh == GP32C4T1))
116 {
117 _maxcnt = 0xFFFFFFFF;
118 }
119 else _maxcnt = 0xFFFF;
120 #else
121 _maxcnt = 0xFFFF;
122 #endif
123
124 /*当最大分频 <= _maxcnt时：估计大概的分频，加快速度 */
125 tmp = bus_speed * (cfg->period)/1000000000/_maxcnt;
126 timer_initstruct->init.prescaler = (tmp > 2U) ? (tmp - 2U) : 0U ; /*bus_speed < 500000000*/
127
128 /* count registers max , auto adjust prescaler */
129 do
130 {
131 _arr = bus_speed * (cfg->period) / 1000000000 /(++timer_initstruct->init.prescaler);
132
133 }
134 while (_arr > _maxcnt);
135
136 WRITE_REG(timer_initstruct->perh->AR, (uint32_t)_arr);
137 timer_initstruct->init.period = (uint32_t)_arr;
138
139 /* update prescaler */
140 WRITE_REG(timer_initstruct->perh->PRES, --timer_initstruct->init.prescaler);
141
142 pwm_set_duty(timer_initstruct, pwm_channel, cfg->pulse);
143
144 break;
145
146 case PWM_CMD_GET:
147 cfg->pulse = ald_timer_read_capture_value(timer_initstruct, pwm_channel) * 100 /
148 READ_REG(timer_initstruct->perh->AR);
149 break;
150
151 default:
152 break;
153 }
154 return ret;
155 }
156
157 const static struct rt_pwm_ops es32f3_pwm_ops =
158 {
159 es32f3_pwm_control
160 };
161
rt_hw_pwm_init(void)162 int rt_hw_pwm_init(void)
163 {
164 rt_err_t ret = RT_EOK;
165 ald_gpio_init_t gpio_initstructure;
166
167 gpio_initstructure.mode = ALD_GPIO_MODE_OUTPUT;
168 gpio_initstructure.od = ALD_GPIO_PUSH_PULL;
169 gpio_initstructure.pupd = ALD_GPIO_PUSH_UP;
170 gpio_initstructure.odrv = ALD_GPIO_OUT_DRIVE_NORMAL;
171 gpio_initstructure.flt = ALD_GPIO_FILTER_DISABLE;
172 gpio_initstructure.type = ALD_GPIO_TYPE_CMOS;
173
174 #ifdef BSP_USING_AD16C4T0_PWM /* 4 channels */
175 static struct rt_device_pwm ad16c4t0_pwm_dev;
176 static ald_timer_handle_t ad16c4t0_timer_initstruct;
177
178 ad16c4t0_timer_initstruct.perh = AD16C4T;
179 ald_timer_pwm_init(&ad16c4t0_timer_initstruct);
180
181 /* gpio initialization */
182
183 #if defined(ES_AD16C4T0_CH1_GPIO_FUNC)&&defined(ES_AD16C4T0_CH1_GPIO_PORT)&&defined(ES_AD16C4T0_CH1_GPIO_PIN)
184 gpio_initstructure.func = ES_AD16C4T0_CH1_GPIO_FUNC;
185 ald_gpio_init(ES_AD16C4T0_CH1_GPIO_PORT, ES_AD16C4T0_CH1_GPIO_PIN, &gpio_initstructure);
186 #endif
187
188 #if defined(ES_AD16C4T0_CH2_GPIO_FUNC)&&defined(ES_AD16C4T0_CH2_GPIO_PORT)&&defined(ES_AD16C4T0_CH2_GPIO_PIN)
189 gpio_initstructure.func = ES_AD16C4T0_CH2_GPIO_FUNC;
190 ald_gpio_init(ES_AD16C4T0_CH2_GPIO_PORT, ES_AD16C4T0_CH2_GPIO_PIN, &gpio_initstructure);
191 #endif
192
193 #if defined(ES_AD16C4T0_CH3_GPIO_FUNC)&&defined(ES_AD16C4T0_CH3_GPIO_PORT)&&defined(ES_AD16C4T0_CH3_GPIO_FUNC)
194 gpio_initstructure.func = ES_AD16C4T0_CH3_GPIO_FUNC;
195 ald_gpio_init(ES_AD16C4T0_CH3_GPIO_PORT, ES_AD16C4T0_CH3_GPIO_PIN, &gpio_initstructure);
196 #endif
197
198 #if defined(ES_AD16C4T0_CH4_GPIO_FUNC)&&defined(ES_AD16C4T0_CH4_GPIO_PORT)&&defined(ES_AD16C4T0_CH4_GPIO_PIN)
199 gpio_initstructure.func = ES_AD16C4T0_CH4_GPIO_FUNC;
200 ald_gpio_init(ES_AD16C4T0_CH4_GPIO_PORT, ES_AD16C4T0_CH4_GPIO_PIN, &gpio_initstructure);
201 #endif
202
203 ret = rt_device_pwm_register(&ad16c4t0_pwm_dev, ES_DEVICE_NAME_AD16C4T0_PWM, &es32f3_pwm_ops,
204 &ad16c4t0_timer_initstruct);
205 #endif
206
207 #ifdef BSP_USING_GP16C4T0_PWM /* 4 channels */
208 static struct rt_device_pwm gp16c4t0_pwm_dev;
209 static ald_timer_handle_t gp16c4t0_timer_initstruct;
210
211 gp16c4t0_timer_initstruct.perh = GP16C4T0;
212 ald_timer_pwm_init(&gp16c4t0_timer_initstruct);
213
214 /* gpio initialization */
215
216 #if defined(ES_GP16C4T0_CH1_GPIO_FUNC)&&defined(ES_GP16C4T0_CH1_GPIO_PORT)&&defined(ES_GP16C4T0_CH1_GPIO_PIN)
217 gpio_initstructure.func = ES_GP16C4T0_CH1_GPIO_FUNC;
218 ald_gpio_init(ES_GP16C4T0_CH1_GPIO_PORT, ES_GP16C4T0_CH1_GPIO_PIN, &gpio_initstructure);
219 #endif
220
221 #if defined(ES_GP16C4T0_CH2_GPIO_FUNC)&&defined(ES_GP16C4T0_CH2_GPIO_PORT)&&defined(ES_GP16C4T0_CH2_GPIO_PIN)
222 gpio_initstructure.func = ES_GP16C4T0_CH2_GPIO_FUNC;
223 ald_gpio_init(ES_GP16C4T0_CH2_GPIO_PORT, ES_GP16C4T0_CH2_GPIO_PIN, &gpio_initstructure);
224 #endif
225
226 #if defined(ES_GP16C4T0_CH3_GPIO_FUNC)&&defined(ES_GP16C4T0_CH3_GPIO_PORT)&&defined(ES_GP16C4T0_CH3_GPIO_PIN)
227 gpio_initstructure.func = ES_GP16C4T0_CH3_GPIO_FUNC;
228 ald_gpio_init(ES_GP16C4T0_CH3_GPIO_PORT, ES_GP16C4T0_CH3_GPIO_PIN, &gpio_initstructure);
229 #endif
230
231 #if defined(ES_GP16C4T0_CH4_GPIO_FUNC)&&defined(ES_GP16C4T0_CH4_GPIO_PORT)&&defined(ES_GP16C4T0_CH4_GPIO_PIN)
232 gpio_initstructure.func = ES_GP16C4T0_CH4_GPIO_FUNC;
233 ald_gpio_init(ES_GP16C4T0_CH4_GPIO_PORT, ES_GP16C4T0_CH4_GPIO_PIN, &gpio_initstructure);
234 #endif
235
236 ret = rt_device_pwm_register(&gp16c4t0_pwm_dev, ES_DEVICE_NAME_GP16C4T0_PWM, &es32f3_pwm_ops,
237 &gp16c4t0_timer_initstruct);
238 #endif
239
240 #ifdef BSP_USING_GP16C4T1_PWM /* 4 channels */
241 static struct rt_device_pwm gp16c4t1_pwm_dev;
242 static ald_timer_handle_t gp16c4t1_timer_initstruct;
243
244 gp16c4t1_timer_initstruct.perh = GP16C4T1;
245 ald_timer_pwm_init(&gp16c4t1_timer_initstruct);
246
247 /* gpio initialization */
248
249 #if defined(ES_GP16C4T1_CH1_GPIO_FUNC)&&defined(ES_GP16C4T1_CH1_GPIO_PORT)&&defined(ES_GP16C4T1_CH1_GPIO_PIN)
250 gpio_initstructure.func = ES_GP16C4T1_CH1_GPIO_FUNC;
251 ald_gpio_init(ES_GP16C4T1_CH1_GPIO_PORT, ES_GP16C4T1_CH1_GPIO_PIN, &gpio_initstructure);
252 #endif
253
254 #if defined(ES_GP16C4T1_CH2_GPIO_FUNC)&&defined(ES_GP16C4T1_CH2_GPIO_PORT)&&defined(ES_GP16C4T1_CH2_GPIO_PIN)
255 gpio_initstructure.func = ES_GP16C4T1_CH2_GPIO_FUNC;
256 ald_gpio_init(ES_GP16C4T1_CH2_GPIO_PORT, ES_GP16C4T1_CH2_GPIO_PIN, &gpio_initstructure);
257 #endif
258
259 #if defined(ES_GP16C4T1_CH3_GPIO_FUNC)&&defined(ES_GP16C4T1_CH3_GPIO_PORT)&&defined(ES_GP16C4T1_CH3_GPIO_PIN)
260 gpio_initstructure.func = ES_GP16C4T1_CH3_GPIO_FUNC;
261 ald_gpio_init(ES_GP16C4T1_CH3_GPIO_PORT, ES_GP16C4T1_CH3_GPIO_PIN, &gpio_initstructure);
262 #endif
263
264 #if defined(ES_GP16C4T1_CH4_GPIO_FUNC)&&defined(ES_GP16C4T1_CH4_GPIO_PORT)&&defined(ES_GP16C4T1_CH4_GPIO_PIN)
265 gpio_initstructure.func = ES_GP16C4T1_CH4_GPIO_FUNC;
266 ald_gpio_init(ES_GP16C4T1_CH4_GPIO_PORT, ES_GP16C4T1_CH4_GPIO_PIN, &gpio_initstructure);
267 #endif
268
269 ret = rt_device_pwm_register(&gp16c4t1_pwm_dev, ES_DEVICE_NAME_GP16C4T1_PWM, &es32f3_pwm_ops,
270 &gp16c4t1_timer_initstruct);
271 #endif
272
273 #ifdef BSP_USING_GP16C4T2_PWM /* 4 channels */
274 static struct rt_device_pwm gp16c4t2_pwm_dev;
275 static ald_timer_handle_t gp16c4t2_timer_initstruct;
276
277 gp16c4t2_timer_initstruct.perh = GP16C4T2;
278 ald_timer_pwm_init(&gp16c4t2_timer_initstruct);
279
280 /* gpio initialization */
281
282 #if defined(ES_GP16C4T2_CH1_GPIO_FUNC)&&defined(ES_GP16C4T2_CH1_GPIO_PORT)&&defined(ES_GP16C4T2_CH1_GPIO_PIN)
283 gpio_initstructure.func = ES_GP16C4T2_CH1_GPIO_FUNC;
284 ald_gpio_init(ES_GP16C4T2_CH1_GPIO_PORT, ES_GP16C4T2_CH1_GPIO_PIN, &gpio_initstructure);
285 #endif
286
287 #if defined(ES_GP16C4T2_CH2_GPIO_FUNC)&&defined(ES_GP16C4T2_CH2_GPIO_PORT)&&defined(ES_GP16C4T2_CH2_GPIO_PIN)
288 gpio_initstructure.func = ES_GP16C4T2_CH2_GPIO_FUNC;
289 ald_gpio_init(ES_GP16C4T2_CH2_GPIO_PORT, ES_GP16C4T2_CH2_GPIO_PIN, &gpio_initstructure);
290 #endif
291
292 #if defined(ES_GP16C4T2_CH3_GPIO_FUNC)&&defined(ES_GP16C4T2_CH3_GPIO_PORT)&&defined(ES_GP16C4T2_CH3_GPIO_PIN)
293 gpio_initstructure.func = ES_GP16C4T2_CH3_GPIO_FUNC;
294 ald_gpio_init(ES_GP16C4T2_CH3_GPIO_PORT, ES_GP16C4T2_CH3_GPIO_PIN, &gpio_initstructure);
295 #endif
296
297 #if defined(ES_GP16C4T2_CH4_GPIO_FUNC)&&defined(ES_GP16C4T2_CH4_GPIO_PORT)&&defined(ES_GP16C4T2_CH4_GPIO_PIN)
298 gpio_initstructure.func = ES_GP16C4T2_CH4_GPIO_FUNC;
299 ald_gpio_init(ES_GP16C4T2_CH4_GPIO_PORT, ES_GP16C4T2_CH4_GPIO_PIN, &gpio_initstructure);
300 #endif
301
302 ret = rt_device_pwm_register(&gp16c4t2_pwm_dev, ES_DEVICE_NAME_GP16C4T2_PWM, &es32f3_pwm_ops,
303 &gp16c4t2_timer_initstruct);
304 #endif
305
306 return ret;
307 }
308 INIT_DEVICE_EXPORT(rt_hw_pwm_init);
309
310 #endif
311