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91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
/*
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* Copyright (C) 2017 Mesotic SAS
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*
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*/
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/*
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* @ingroup drivers_pca9685
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* @ingroup sys_auto_init_saul
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* @brief Auto initialization of PCA9685 I2C PWM controller
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* @author Gunar Schorcht <gunar@schorcht.net>
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* @file
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*/
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#include "assert.h"
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#include "log.h"
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#include "saul_reg.h"
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#include "saul/periph.h"
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#include "pca9685.h"
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#include "pca9685_params.h"
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/**
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* @brief Number of configured PCA9685 DAC devices
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*/
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#define PCA9685_NUM (ARRAY_SIZE(pca9685_params))
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/**
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* @brief Number of configured SAUL PCA9685 DAC channels
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*/
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#define PCA9685_SAUL_DAC_NUMOF (ARRAY_SIZE(pca9685_saul_pwm_params))
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/**
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* @brief Number of saul info
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*/
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#define PCA9685_INFO_NUM (ARRAY_SIZE(pca9685_saul_info))
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/**
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* @brief Allocate the memory for the PCA9685 DAC device descriptors
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*/
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pca9685_t pca9685_devs[PCA9685_NUM];
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/**
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* @brief Allocate the memory for PCA9685 DAC SAUL registry entries
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*/
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static saul_reg_t pca9685_saul_reg_entries[PCA9685_SAUL_DAC_NUMOF];
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/**
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* @brief Reference the PCA9685 DAC input mode driver struct
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*/
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extern saul_driver_t pca9685_pwm_in_saul_driver;
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/**
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* @brief Reference to the PCA9685 DAC output mode driver struct
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*/
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extern saul_driver_t pca9685_pwm_saul_driver;
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void auto_init_pca9685(void)
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{
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for (unsigned int i = 0; i < PCA9685_NUM; i++) {
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LOG_DEBUG("[auto_init_saul] initializing PCA9685 PWM dev #%u\n", i);
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pca9685_init(&pca9685_devs[i], &pca9685_params[i]);
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pca9685_pwm_init(&pca9685_devs[i], pca9685_params[i].mode,
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pca9685_params[i].freq,
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pca9685_params[i].res);
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}
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for (unsigned int i = 0; i < PCA9685_SAUL_DAC_NUMOF; i++) {
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const pca9685_saul_pwm_params_t *p = &pca9685_saul_pwm_params[i];
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LOG_DEBUG("[auto_init_saul] initializing PCA9685 channel #%u\n", i);
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/* check the PCA9685 device index */
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assert(p->dev < PCA9685_NUM);
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pca9685_saul_reg_entries[i].dev = (void *)p;
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pca9685_saul_reg_entries[i].name = p->name;
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pca9685_saul_reg_entries[i].driver = &pca9685_pwm_saul_driver;
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/* initialize the PCA9685 pin */
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pca9685_pwm_set(&pca9685_devs[p->dev], p->channel, p->initial);
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/* add to registry */
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saul_reg_add(&(pca9685_saul_reg_entries[i]));
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}
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}
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