383 lines
12 KiB
C
383 lines
12 KiB
C
/*
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* Copyright (c) 2006-2022, Synwit Technology Co.,Ltd.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2018-12-10 Zohar_Lee first version
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* 2020-07-10 lik format file
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*/
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#include "drv_pwm.h"
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#ifdef RT_USING_PWM
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#ifdef BSP_USING_PWM
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//#define DRV_DEBUG
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#define LOG_TAG "drv.pwm"
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#include <drv_log.h>
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#if !defined(BSP_USING_PWM0) && !defined(BSP_USING_PWM1) && !defined(BSP_USING_PWM2) && !defined(BSP_USING_PWM3) && !defined(BSP_USING_PWM4) && !defined(BSP_USING_PWM5)
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#error "Please define at least one BSP_USING_PWMx"
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/* this driver can be disabled at menuconfig ? RT-Thread Components ? Device Drivers */
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#endif
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#define MIN_PERIOD 2
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#define MIN_PULSE 1
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#ifdef BSP_USING_PWM0
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#ifndef PWM0_CFG
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#define PWM0_CFG \
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{ \
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.name = "pwm0", \
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.PWMx = PWM0, \
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.pwm_initstruct.clk_div = PWM_CLKDIV_8, \
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.pwm_initstruct.mode = PWM_MODE_INDEP, \
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.pwm_initstruct.cycleA = 10000, \
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.pwm_initstruct.hdutyA = 5000, \
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.pwm_initstruct.initLevelA = 1, \
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.pwm_initstruct.cycleB = 10000, \
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.pwm_initstruct.hdutyB = 5000, \
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.pwm_initstruct.initLevelB = 1, \
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.pwm_initstruct.HEndAIEn = 0, \
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.pwm_initstruct.NCycleAIEn = 0, \
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.pwm_initstruct.HEndBIEn = 0, \
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.pwm_initstruct.NCycleBIEn = 0, \
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}
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#endif /* PWM0_CFG */
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#endif /* BSP_USING_PWM0 */
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#ifdef BSP_USING_PWM1
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#ifndef PWM1_CFG
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#define PWM1_CFG \
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{ \
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.name = "pwm1", \
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.PWMx = PWM1, \
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.pwm_initstruct.clk_div = PWM_CLKDIV_8, \
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.pwm_initstruct.mode = PWM_MODE_INDEP, \
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.pwm_initstruct.cycleA = 10000, \
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.pwm_initstruct.hdutyA = 5000, \
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.pwm_initstruct.initLevelA = 1, \
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.pwm_initstruct.cycleB = 10000, \
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.pwm_initstruct.hdutyB = 5000, \
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.pwm_initstruct.initLevelB = 1, \
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.pwm_initstruct.HEndAIEn = 0, \
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.pwm_initstruct.NCycleAIEn = 0, \
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.pwm_initstruct.HEndBIEn = 0, \
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.pwm_initstruct.NCycleBIEn = 0, \
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}
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#endif /* PWM1_CFG */
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#endif /* BSP_USING_PWM1 */
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#ifdef BSP_USING_PWM2
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#ifndef PWM2_CFG
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#define PWM2_CFG \
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{ \
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.name = "pwm2", \
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.PWMx = PWM2, \
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.pwm_initstruct.clk_div = PWM_CLKDIV_8, \
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.pwm_initstruct.mode = PWM_MODE_INDEP, \
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.pwm_initstruct.cycleA = 10000, \
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.pwm_initstruct.hdutyA = 5000, \
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.pwm_initstruct.initLevelA = 1, \
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.pwm_initstruct.cycleB = 10000, \
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.pwm_initstruct.hdutyB = 5000, \
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.pwm_initstruct.initLevelB = 1, \
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.pwm_initstruct.HEndAIEn = 0, \
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.pwm_initstruct.NCycleAIEn = 0, \
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.pwm_initstruct.HEndBIEn = 0, \
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.pwm_initstruct.NCycleBIEn = 0, \
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}
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#endif /* PWM2_CFG */
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#endif /* BSP_USING_PWM2 */
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#ifdef BSP_USING_PWM3
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#ifndef PWM3_CFG
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#define PWM3_CFG \
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{ \
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.name = "pwm3", \
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.PWMx = PWM3, \
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.pwm_initstruct.clk_div = PWM_CLKDIV_8, \
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.pwm_initstruct.mode = PWM_MODE_INDEP, \
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.pwm_initstruct.cycleA = 10000, \
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.pwm_initstruct.hdutyA = 5000, \
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.pwm_initstruct.initLevelA = 1, \
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.pwm_initstruct.cycleB = 10000, \
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.pwm_initstruct.hdutyB = 5000, \
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.pwm_initstruct.initLevelB = 1, \
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.pwm_initstruct.HEndAIEn = 0, \
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.pwm_initstruct.NCycleAIEn = 0, \
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.pwm_initstruct.HEndBIEn = 0, \
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.pwm_initstruct.NCycleBIEn = 0, \
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}
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#endif /* PWM3_CFG */
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#endif /* BSP_USING_PWM3 */
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#ifdef BSP_USING_PWM4
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#ifndef PWM4_CFG
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#define PWM4_CFG \
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{ \
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.name = "pwm4", \
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.PWMx = PWM4, \
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.pwm_initstruct.clk_div = PWM_CLKDIV_8, \
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.pwm_initstruct.mode = PWM_MODE_INDEP, \
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.pwm_initstruct.cycleA = 10000, \
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.pwm_initstruct.hdutyA = 5000, \
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.pwm_initstruct.initLevelA = 1, \
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.pwm_initstruct.cycleB = 10000, \
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.pwm_initstruct.hdutyB = 5000, \
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.pwm_initstruct.initLevelB = 1, \
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.pwm_initstruct.HEndAIEn = 0, \
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.pwm_initstruct.NCycleAIEn = 0, \
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.pwm_initstruct.HEndBIEn = 0, \
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.pwm_initstruct.NCycleBIEn = 0, \
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}
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#endif /* PWM4_CFG */
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#endif /* BSP_USING_PWM4 */
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#ifdef BSP_USING_PWM5
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#ifndef PWM5_CFG
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#define PWM5_CFG \
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{ \
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.name = "pwm5", \
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.PWMx = PWM5, \
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.pwm_initstruct.clk_div = PWM_CLKDIV_8, \
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.pwm_initstruct.mode = PWM_MODE_INDEP, \
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.pwm_initstruct.cycleA = 10000, \
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.pwm_initstruct.hdutyA = 5000, \
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.pwm_initstruct.initLevelA = 1, \
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.pwm_initstruct.cycleB = 10000, \
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.pwm_initstruct.hdutyB = 5000, \
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.pwm_initstruct.initLevelB = 1, \
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.pwm_initstruct.HEndAIEn = 0, \
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.pwm_initstruct.NCycleAIEn = 0, \
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.pwm_initstruct.HEndBIEn = 0, \
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.pwm_initstruct.NCycleBIEn = 0, \
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}
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#endif /* PWM5_CFG */
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#endif /* BSP_USING_PWM5 */
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struct swm_pwm_cfg
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{
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const char *name;
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PWM_TypeDef *PWMx;
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PWM_InitStructure pwm_initstruct;
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};
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struct swm_pwm_device
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{
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struct swm_pwm_cfg *pwm_cfg;
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struct rt_device_pwm pwm_device;
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};
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static struct swm_pwm_cfg swm_pwm_cfg[] =
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{
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#ifdef BSP_USING_PWM0
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PWM0_CFG,
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#endif
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#ifdef BSP_USING_PWM1
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PWM1_CFG,
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#endif
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#ifdef BSP_USING_PWM2
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PWM2_CFG,
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#endif
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#ifdef BSP_USING_PWM3
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PWM3_CFG,
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#endif
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#ifdef BSP_USING_PWM4
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PWM4_CFG,
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#endif
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#ifdef BSP_USING_PWM5
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PWM5_CFG,
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#endif
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};
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static struct swm_pwm_device pwm_obj[sizeof(swm_pwm_cfg) / sizeof(swm_pwm_cfg[0])] = {0};
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static rt_err_t swm_pwm_enable(struct rt_device_pwm *pwm_device, struct rt_pwm_configuration *configuration, rt_bool_t enable)
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{
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struct swm_pwm_cfg *pwm_cfg = RT_NULL;
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RT_ASSERT(pwm_device != RT_NULL);
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pwm_cfg = pwm_device->parent.user_data;
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if (!enable)
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{
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if (PWM_CH_A == configuration->channel)
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{
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PWM_Stop(pwm_cfg->PWMx, 1, 0);
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}
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if (PWM_CH_B == configuration->channel)
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{
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PWM_Stop(pwm_cfg->PWMx, 0, 1);
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}
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}
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else
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{
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if (PWM_CH_A == configuration->channel)
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{
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PWM_Start(pwm_cfg->PWMx, 1, 0);
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}
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if (PWM_CH_B == configuration->channel)
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{
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PWM_Start(pwm_cfg->PWMx, 0, 1);
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}
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}
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return RT_EOK;
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}
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static rt_err_t swm_pwm_get(struct rt_device_pwm *pwm_device, struct rt_pwm_configuration *configuration)
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{
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rt_uint64_t tim_clock;
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tim_clock = SystemCoreClock / 8;
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struct swm_pwm_cfg *pwm_cfg = RT_NULL;
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RT_ASSERT(pwm_device != RT_NULL);
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pwm_cfg = pwm_device->parent.user_data;
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/* Convert nanosecond to frequency and duty cycle. 1s = 1 * 1000 * 1000 * 1000 ns */
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tim_clock /= 1000000UL;
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configuration->period = PWM_GetCycle(pwm_cfg->PWMx, configuration->channel) * 1000UL / tim_clock;
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configuration->pulse = PWM_GetHDuty(pwm_cfg->PWMx, configuration->channel) * 1000UL / tim_clock;
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return RT_EOK;
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}
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static rt_err_t swm_pwm_set(struct rt_device_pwm *pwm_device, struct rt_pwm_configuration *configuration)
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{
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rt_uint32_t period, pulse;
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rt_uint64_t tim_clock;
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tim_clock = SystemCoreClock / 8;
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struct swm_pwm_cfg *pwm_cfg = RT_NULL;
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RT_ASSERT(pwm_device != RT_NULL);
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pwm_cfg = pwm_device->parent.user_data;
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/* Convert nanosecond to frequency and duty cycle. 1s = 1 * 1000 * 1000 * 1000 ns */
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/* when SystemCoreClock = 120MHz, configuration->period max 4.369ms */
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/* when SystemCoreClock = 20MHz, configuration->period max 26.214ms */
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tim_clock /= 1000000UL;
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period = (unsigned long long)configuration->period * tim_clock / 1000ULL;
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pulse = (unsigned long long)configuration->pulse * tim_clock / 1000ULL;
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if (period < MIN_PERIOD)
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{
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period = MIN_PERIOD;
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}
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if (pulse < MIN_PULSE)
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{
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pulse = MIN_PULSE;
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}
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PWM_SetCycle(pwm_cfg->PWMx, configuration->channel, period);
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PWM_SetHDuty(pwm_cfg->PWMx, configuration->channel, pulse);
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return RT_EOK;
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}
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static rt_err_t swm_pwm_control(struct rt_device_pwm *pwm_device, int cmd, void *arg)
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{
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RT_ASSERT(pwm_device != RT_NULL);
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struct rt_pwm_configuration *configuration = (struct rt_pwm_configuration *)arg;
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switch (cmd)
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{
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case PWM_CMD_ENABLE:
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return swm_pwm_enable(pwm_device, configuration, RT_TRUE);
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case PWM_CMD_DISABLE:
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return swm_pwm_enable(pwm_device, configuration, RT_FALSE);
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case PWM_CMD_SET:
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return swm_pwm_set(pwm_device, configuration);
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case PWM_CMD_GET:
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return swm_pwm_get(pwm_device, configuration);
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default:
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return -RT_EINVAL;
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}
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}
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static struct rt_pwm_ops pwm_ops =
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{
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swm_pwm_control};
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int swm_pwm_init(void)
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{
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int i = 0;
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int result = RT_EOK;
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for (i = 0; i < sizeof(swm_pwm_cfg) / sizeof(swm_pwm_cfg[0]); i++)
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{
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pwm_obj[i].pwm_cfg = &swm_pwm_cfg[i];
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if (pwm_obj[i].pwm_cfg->PWMx == PWM0)
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{
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#ifdef BSP_USING_PWM0A
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PORT_Init(PORTC, PIN2, FUNMUX0_PWM0A_OUT, 0);
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#endif
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#ifdef BSP_USING_PWM0B
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PORT_Init(PORTC, PIN4, FUNMUX0_PWM0B_OUT, 0);
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#endif
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}
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else if (pwm_obj[i].pwm_cfg->PWMx == PWM1)
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{
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#ifdef BSP_USING_PWM1A
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PORT_Init(PORTC, PIN3, FUNMUX1_PWM1A_OUT, 0);
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#endif
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#ifdef BSP_USING_PWM1B
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PORT_Init(PORTC, PIN5, FUNMUX1_PWM1B_OUT, 0);
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#endif
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}
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else if (pwm_obj[i].pwm_cfg->PWMx == PWM2)
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{
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#ifdef BSP_USING_PWM2A
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PORT_Init(PORTN, PIN4, FUNMUX0_PWM2A_OUT, 0);
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#endif
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#ifdef BSP_USING_PWM2B
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PORT_Init(PORTN, PIN6, FUNMUX0_PWM2B_OUT, 0);
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#endif
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}
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else if (pwm_obj[i].pwm_cfg->PWMx == PWM3)
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{
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#ifdef BSP_USING_PWM3A
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PORT_Init(PORTN, PIN3, FUNMUX1_PWM3A_OUT, 0);
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#endif
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#ifdef BSP_USING_PWM3B
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PORT_Init(PORTN, PIN5, FUNMUX1_PWM3B_OUT, 0);
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#endif
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}
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else if (pwm_obj[i].pwm_cfg->PWMx == PWM4)
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{
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#ifdef BSP_USING_PWM4A
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PORT_Init(PORTN, PIN8, FUNMUX0_PWM4A_OUT, 0);
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#endif
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#ifdef BSP_USING_PWM4B
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PORT_Init(PORTN, PIN10, FUNMUX0_PWM4B_OUT, 0);
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#endif
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}
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else if (pwm_obj[i].pwm_cfg->PWMx == PWM5)
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{
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#ifdef BSP_USING_PWM5A
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PORT_Init(PORTN, PIN7, FUNMUX1_PWM5A_OUT, 0);
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#endif
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#ifdef BSP_USING_PWM5B
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PORT_Init(PORTN, PIN9, FUNMUX1_PWM5B_OUT, 0);
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#endif
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}
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PWM_Init(pwm_obj[i].pwm_cfg->PWMx, &(pwm_obj[i].pwm_cfg->pwm_initstruct));
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result = rt_device_pwm_register(&pwm_obj[i].pwm_device, pwm_obj[i].pwm_cfg->name, &pwm_ops, pwm_obj[i].pwm_cfg);
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if(result != RT_EOK)
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{
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LOG_E("%s register fail.", pwm_obj[i].pwm_cfg->name);
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}
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else
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{
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LOG_D("%s register success.", pwm_obj[i].pwm_cfg->name);
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}
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}
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return result;
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}
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INIT_DEVICE_EXPORT(swm_pwm_init);
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#endif /* BSP_USING_PWM */
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#endif /* RT_USING_PWM */
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