294 lines
9.5 KiB
C
294 lines
9.5 KiB
C
/****************************************************************************
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* include/nuttx/power/smps.h
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*
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* Copyright (C) 2017 Gregory Nutt. All rights reserved.
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* Author: Mateusz Szafoni <raiden00@railab.me>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __INCLUDE_NUTTX_DRIVERS_POWER_H
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#define __INCLUDE_NUTTX_DRIVERS_POWER_H
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/*
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* The SMPS (switched-mode power supply) driver is split into two parts:
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*
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* 1) An "upper half", generic driver that provides the common SMPS interface
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* to application level code, and
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* 2) A "lower half", platform-specific driver that implements the low-level
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* functionality eg.:
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* - timer controls to implement the PWM signals,
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* - analog peripherals configuration such as ADC, DAC and comparators,
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* - control algorithm for SMPS action (eg. PID loop)
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*
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*/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/compiler.h>
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#include <nuttx/power/power_ioctl.h>
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#ifdef CONFIG_DRIVERS_SMPS
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/* SMPS operation modes */
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enum smps_opmode_e
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{
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SMPS_OPMODE_INIT = 0, /* Initial mode */
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SMPS_OPMODE_CC = 1, /* Constant current mode */
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SMPS_OPMODE_CV = 2, /* Constant voltage mode */
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SMPS_OPMODE_CP = 3 /* Constant power mode*/
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};
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/* SMPS state */
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enum smps_state_e
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{
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SMPS_STATE_INIT = 0, /* Initial state */
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SMPS_STATE_IDLE = 1, /* IDLE state */
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SMPS_STATE_RUN = 2, /* Run state */
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SMPS_STATE_FAULT = 3, /* Fault state */
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SMPS_STATE_CRITICAL = 4 /* Critical Fault state */
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};
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/* SMPS fault type */
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enum smps_fault_e
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{
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SMPS_FAULT_OVERCURRENT = (1 << 0), /* Over-current Fault */
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SMPS_FAULT_OVERVOLTAGE = (1 << 1), /* Over-voltage Fault */
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SMPS_FAULT_OVERPOWER = (1 << 2), /* Over-power Fault */
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SMPS_FAULT_OVERTEMP = (1 << 3), /* Over-temperature Fault */
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SMPS_FAULT_INVAL_PARAM = (1 << 4), /* Invalid parameter */
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SMPS_FAULT_OTHER = (1 << 5) /* Other */
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};
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/* SMPS operation flags */
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enum smps_opflags_s
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{
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SMPS_FLAG_NOLOAD = (1 << 0), /* No load */
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SMPS_FLAG_SHARED_LOAD = (1 << 1), /* Shared Load mode */
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SMPS_FLAG_BURST_MODE = (1 << 2) /* Burst mode */
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};
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/* This structure contain feedback data from converter */
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struct smps_feedback_s
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{
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#ifdef CONFIG_SMPS_HAVE_OUTPUT_VOLTAGE
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float v_out; /* Output Voltage */
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#endif
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#ifdef CONFIG_SMPS_HAVE_INPUT_CURRENT
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float i_in; /* Input Current */
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#endif
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#ifdef CONFIG_SMPS_HAVE_INPUT_VOLTAGE
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float v_in; /* Input Voltage */
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#endif
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#ifdef CONFIG_SMPS_HAVE_OUTPUT_CURRENT
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float i_out; /* Output Current */
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#endif
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#ifdef CONFIG_SMPS_HAVE_INPUT_POWER
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float p_in; /* Input Power */
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#endif
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#ifdef CONFIG_SMPS_HAVE_OUTPUT_POWER
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float p_out; /* Output Power */
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#endif
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#ifdef CONFIG_SMPS_HAVE_EFFICIENCY
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float eff; /* Converter Efficiency */
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#endif
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};
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/* This structure describes converter state */
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struct smps_state_s
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{
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uint8_t state; /* SMPS state */
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uint8_t fault; /* SMPS faults state */
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struct smps_feedback_s fb; /* Feedback from SMPS */
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};
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/* SMPS absolute limits. Exceeding this limits should cause critical error */
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struct smps_limits_s
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{
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bool lock; /* */
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float v_in; /* Maximum input voltage */
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float v_out; /* Maximum output voltage */
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float i_in; /* Maximum input current */
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float i_out; /* Maximum output current */
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float p_in; /* Maximum input power */
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float p_out; /* Maximum output power */
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};
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/* SMPS parameters */
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struct smps_params_s
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{
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bool lock;
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float v_out; /* */
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float i_out; /* */
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float p_out; /* */
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};
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/* SMPS private data strucutre */
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struct smps_s
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{
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uint8_t opmode; /* SMPS operation mode */
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uint8_t opflags; /* SMPS operation flags */
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const struct smps_limits_s limits; /* SMPS absolute limits */
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struct smps_params_s param; /* SMPS settings */
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struct smps_state_s state; /* SMPS state */
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};
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/* SMPS operations used to call from the upper-half, generic SMPS driver
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* into lower-half, platform-specific logic.
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*/
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struct smps_dev_s;
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struct smps_ops_s
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{
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/* Configure SMPS */
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CODE int (*setup)(FAR struct smps_dev_s *dev);
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/* Disable converter action */
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CODE int (*shutdown)(FAR struct smps_dev_s *dev);
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/* Stop SMPS action */
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CODE int (*stop)(FAR struct smps_dev_s *dev);
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/* Start SMPS action */
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CODE int (*start)(FAR struct smps_dev_s *dev);
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/* Set SMPS parameters */
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CODE int (*params_set)(FAR struct smps_dev_s *dev,
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FAR struct smps_params_s *param);
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/* Set SMPS operation mode */
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CODE int (*mode_set)(FAR struct smps_dev_s *dev, uint8_t mode);
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/* Set SMPS limts */
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CODE int (*limits_set)(FAR struct smps_dev_s *dev,
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FAR struct smps_limits_s *limits);
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/* Set SMPS fault */
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CODE int (*fault_set)(FAR struct smps_dev_s *dev, uint8_t fault);
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/* Get SMPS state */
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CODE int (*state_get)(FAR struct smps_dev_s *dev,
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FAR struct smps_state_s *state);
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/* Get current fault state */
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CODE int (*fault_get)(FAR struct smps_dev_s *dev, FAR uint8_t *fault);
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/* Clean fault state */
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CODE int (*fault_clean)(FAR struct smps_dev_s *dev, uint8_t fault);
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/* Lower-half logic may support platform-specific ioctl commands */
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CODE int (*ioctl)(FAR struct smps_dev_s *dev, int cmd, unsigned long arg);
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};
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/* SMPS device structure used by the driver. The caller of smps_register
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* must allocate and initialize this structure. The calling logic need
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* provide 'ops', 'priv' and 'lower' elements.
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*/
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struct smps_dev_s
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{
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/* Fields managed by common upper half SMPS logic */
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uint8_t ocount; /* The number of times the device
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* has been opened
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*/
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sem_t closesem; /* Locks out new opens while close
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* is in progress
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*/
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/* Fields provided by lower half SMPS logic */
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FAR const struct smps_ops_s *ops; /* Arch-specific operations */
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FAR void *priv; /* Reference to SMPS private data */
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FAR void *lower; /* Reference to lower level drivers */
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};
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Name: smps_register
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****************************************************************************/
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int smps_register(FAR const char *path, FAR struct smps_dev_s *dev,
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FAR void *lower);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* CONFIG_DRIVERS_SMPS */
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#endif /* __INCLUDE_NUTTX_DRIVERS_POWER_H */
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