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162 lines
4.8 KiB
C
162 lines
4.8 KiB
C
/**
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******************************************************************************
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* @file paltform_pwm.c
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* @author William Xu
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* @version V1.0.0
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* @date 05-May-2014
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* @brief This file provide PWM driver functions.
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******************************************************************************
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* UNPUBLISHED PROPRIETARY SOURCE CODE
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* Copyright (c) 2016 MXCHIP Inc.
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*
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* The contents of this file may not be disclosed to third parties, copied or
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* duplicated in any form, in whole or in part, without the prior written
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* permission of MXCHIP Corporation.
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******************************************************************************
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*/
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#include "mico_rtos.h"
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#include "mico_platform.h"
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#include "platform.h"
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#include "platform_peripheral.h"
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#include "platform_logging.h"
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#include "pinmap.h"
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/******************************************************
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* Constants
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******************************************************/
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/******************************************************
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* Enumerations
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******************************************************/
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/******************************************************
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* Type Definitions
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******************************************************/
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/******************************************************
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* Structures
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******************************************************/
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/******************************************************
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* Variables Definitions
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******************************************************/
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static const PinMap PinMap_PWM[] = {
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{PB_4, RTL_PIN_PERI(PWM0, 0, S0), RTL_PIN_FUNC(PWM0, S0)},
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{PB_5, RTL_PIN_PERI(PWM1, 1, S0), RTL_PIN_FUNC(PWM1, S0)},
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{PB_6, RTL_PIN_PERI(PWM2, 2, S0), RTL_PIN_FUNC(PWM2, S0)},
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{PB_7, RTL_PIN_PERI(PWM3, 3, S0), RTL_PIN_FUNC(PWM3, S0)},
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{PC_0, RTL_PIN_PERI(PWM0, 0, S1), RTL_PIN_FUNC(PWM0, S1)},
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{PC_1, RTL_PIN_PERI(PWM1, 1, S1), RTL_PIN_FUNC(PWM1, S1)},
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{PC_2, RTL_PIN_PERI(PWM2, 2, S1), RTL_PIN_FUNC(PWM2, S1)},
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{PC_3, RTL_PIN_PERI(PWM3, 3, S1), RTL_PIN_FUNC(PWM3, S1)},
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{PD_3, RTL_PIN_PERI(PWM0, 0, S2), RTL_PIN_FUNC(PWM0, S2)},
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{PD_4, RTL_PIN_PERI(PWM1, 1, S2), RTL_PIN_FUNC(PWM1, S2)},
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{PD_5, RTL_PIN_PERI(PWM2, 2, S2), RTL_PIN_FUNC(PWM2, S2)},
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{PD_6, RTL_PIN_PERI(PWM3, 3, S2), RTL_PIN_FUNC(PWM3, S2)},
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{PE_0, RTL_PIN_PERI(PWM0, 0, S3), RTL_PIN_FUNC(PWM0, S3)},
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{PE_1, RTL_PIN_PERI(PWM1, 1, S3), RTL_PIN_FUNC(PWM1, S3)},
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{PE_2, RTL_PIN_PERI(PWM2, 2, S3), RTL_PIN_FUNC(PWM2, S3)},
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{PE_3, RTL_PIN_PERI(PWM3, 3, S3), RTL_PIN_FUNC(PWM3, S3)},
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{NC, NC, 0}
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};
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/******************************************************
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* Function Declarations
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******************************************************/
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/******************************************************
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* Function Definitions
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******************************************************/
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OSStatus rtk_pwm_init( platform_pwm_t* pwm, uint32_t frequency, float duty_cycle )
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{
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uint32_t peripheral;
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u32 pwm_idx;
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u32 pin_sel;
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float value;
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OSStatus err = kNoErr;
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// Get the peripheral name from the pin and assign it to the object
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peripheral = pinmap_peripheral(pwm->pin, PinMap_PWM);
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if (unlikely(peripheral == NC)) {
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DBG_PWM_ERR("%s: Cannot find matched pwm for this pin(0x%x)\n", __FUNCTION__, pwm->pin);
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return kParamErr;
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}
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pwm_idx = RTL_GET_PERI_IDX(peripheral);
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pin_sel = RTL_GET_PERI_SEL(peripheral);
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pwm->pwm_idx = pwm_idx;
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pwm->pin_sel = pin_sel;
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HAL_Pwm_Init(pwm_idx, pin_sel);
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if (duty_cycle < (float)0.0) {
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value = 0.0;
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}else if (duty_cycle > (float)100.0) {
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value = 1.0;
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}else{
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value = duty_cycle/100;
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}
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pwm->period = (uint32_t)((float)1000000.0/frequency);
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pwm->pulse = (uint32_t)((float)pwm->period * value);
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HAL_Pwm_SetDuty(pwm->pwm_idx, pwm->period, pwm->pulse);
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return err;
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}
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OSStatus platform_pwm_init( const platform_pwm_t* pwm, uint32_t frequency, float duty_cycle )
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{
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OSStatus err = kNoErr;
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require_action_quiet( pwm != NULL, exit, err = kParamErr);
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platform_mcu_powersave_disable();
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rtk_pwm_init(pwm, frequency, duty_cycle);
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exit:
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platform_mcu_powersave_enable();
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return err;
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}
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OSStatus platform_pwm_start( const platform_pwm_t* pwm )
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{
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OSStatus err = kNoErr;
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platform_mcu_powersave_disable();
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require_action_quiet( pwm != NULL, exit, err = kParamErr);
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HAL_Pwm_Enable(pwm->pwm_idx);
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exit:
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platform_mcu_powersave_enable();
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return err;
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}
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OSStatus platform_pwm_stop( const platform_pwm_t* pwm )
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{
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OSStatus err = kNoErr;
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platform_mcu_powersave_disable();
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require_action_quiet( pwm != NULL, exit, err = kParamErr);
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HAL_Pwm_Disable(pwm->pwm_idx);
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exit:
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platform_mcu_powersave_enable();
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return err;
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}
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