/* * 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 #include #include #include #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