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https://github.com/micropython/micropython.git
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Damien George
dbe6a11670
This commit implements the standard `machine.PWM` class on stm32, using the common bindings in `extmod/machine_pwm.c`. Features implemented are: - construct a PWM object from a pin, with automatic selection of TIM instance and channel; - get and set freq, duty_u16 and duty_ns; - optionally invert the output. The PWM objects are static objects (partly in ROM, partly in RAM) so creating a PWM instance on the same pin will return exactly the same object. That's consistent with other peripherals in the stm32 port, and consistent with other PWM implementations (eg rp2). When creating a PWM object on a pin, if that pin has multiple TIM instances then only the first will be selected. A future extension could allow selecting the TIM/channel (eg similar to how ADCBlock allows selecting an ADC). Signed-off-by: Damien George <damien@micropython.org>
44 lines
1.7 KiB
C
44 lines
1.7 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013-2015 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef MICROPY_INCLUDED_STM32_MODMACHINE_H
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#define MICROPY_INCLUDED_STM32_MODMACHINE_H
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#include "py/obj.h"
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void machine_init(void);
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void machine_deinit(void);
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void machine_i2s_init0();
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void machine_pwm_deinit_all(void);
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MP_DECLARE_CONST_FUN_OBJ_VAR_BETWEEN(machine_info_obj);
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MP_DECLARE_CONST_FUN_OBJ_0(machine_disable_irq_obj);
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MP_DECLARE_CONST_FUN_OBJ_VAR_BETWEEN(machine_enable_irq_obj);
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MP_DECLARE_CONST_FUN_OBJ_0(pyb_irq_stats_obj);
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#endif // MICROPY_INCLUDED_STM32_MODMACHINE_H
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