mirror of https://github.com/ARMmbed/mbed-os.git
105 lines
2.8 KiB
C
105 lines
2.8 KiB
C
/* mbed Microcontroller Library
|
|
* Copyright (c) 2019, Arm Limited and affiliates.
|
|
* 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
|
|
*
|
|
* http://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.
|
|
*/
|
|
|
|
#include "pwmout_api.h"
|
|
#include "mbed_error.h"
|
|
#include "cyhal_pwm.h"
|
|
|
|
#if DEVICE_PWMOUT
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
static const int CY_US_PER_SECOND = 1000000;
|
|
static const int CY_US_PER_MS = 1000;
|
|
|
|
void pwmout_init(pwmout_t *obj, PinName pin)
|
|
{
|
|
if (CY_RSLT_SUCCESS != cyhal_pwm_init(&(obj->hal_pwm), pin, NULL)) {
|
|
MBED_ERROR(MBED_MAKE_ERROR(MBED_MODULE_DRIVER_PWM, MBED_ERROR_CODE_FAILED_OPERATION), "cyhal_pwm_init");
|
|
}
|
|
obj->period_us = 100;
|
|
obj->width_us = 0;
|
|
}
|
|
|
|
void pwmout_free(pwmout_t *obj)
|
|
{
|
|
cyhal_pwm_free(&(obj->hal_pwm));
|
|
}
|
|
|
|
void pwmout_write(pwmout_t *obj, float percent)
|
|
{
|
|
MBED_ASSERT(percent >= 0.0f && percent <= 1.0f);
|
|
pwmout_pulsewidth_us(obj, (int)(percent * obj->period_us));
|
|
}
|
|
|
|
float pwmout_read(pwmout_t *obj)
|
|
{
|
|
return 100.0f * obj->width_us / obj->period_us;
|
|
}
|
|
|
|
void pwmout_period(pwmout_t *obj, float seconds)
|
|
{
|
|
pwmout_period_us(obj, (int)(seconds * CY_US_PER_SECOND));
|
|
}
|
|
|
|
void pwmout_period_ms(pwmout_t *obj, int ms)
|
|
{
|
|
pwmout_period_us(obj, ms * CY_US_PER_MS);
|
|
}
|
|
|
|
void pwmout_period_us(pwmout_t *obj, int us)
|
|
{
|
|
obj->period_us = (uint32_t)us;
|
|
if (CY_RSLT_SUCCESS != cyhal_pwm_set_period(&(obj->hal_pwm), obj->period_us, obj->width_us)) {
|
|
MBED_ERROR(MBED_MAKE_ERROR(MBED_MODULE_DRIVER_PWM, MBED_ERROR_CODE_FAILED_OPERATION), "cyhal_pwm_set_period");
|
|
}
|
|
if (CY_RSLT_SUCCESS != cyhal_pwm_start(&(obj->hal_pwm))) {
|
|
MBED_ERROR(MBED_MAKE_ERROR(MBED_MODULE_DRIVER_PWM, MBED_ERROR_CODE_FAILED_OPERATION), "cyhal_pwm_start");
|
|
}
|
|
}
|
|
|
|
void pwmout_pulsewidth(pwmout_t *obj, float seconds)
|
|
{
|
|
pwmout_pulsewidth_us(obj, (int)(seconds * CY_US_PER_SECOND));
|
|
}
|
|
|
|
void pwmout_pulsewidth_ms(pwmout_t *obj, int ms)
|
|
{
|
|
pwmout_pulsewidth_us(obj, ms * CY_US_PER_MS);
|
|
}
|
|
|
|
void pwmout_pulsewidth_us(pwmout_t *obj, int us)
|
|
{
|
|
obj->width_us = (uint32_t)us;
|
|
if (CY_RSLT_SUCCESS != cyhal_pwm_set_period(&(obj->hal_pwm), obj->period_us, obj->width_us)) {
|
|
MBED_ERROR(MBED_MAKE_ERROR(MBED_MODULE_DRIVER_PWM, MBED_ERROR_CODE_FAILED_OPERATION), "cyhal_pwm_set_period");
|
|
}
|
|
}
|
|
|
|
const PinMap *pwmout_pinmap(void)
|
|
{
|
|
return PinMap_PWM_OUT;
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif
|