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85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
/*
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* Copyright (C) 2015 Freie Universität Berlin
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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 sys_auto_init_saul
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* @{
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*
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* @file
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* @brief Auto initialization of GPIO pins directly mapped to SAUL reg
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*
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* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
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*
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* @}
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*/
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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 "gpio_params.h"
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#include "periph/gpio.h"
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#include "kernel_defines.h"
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/**
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* @brief Define the number of configured sensors
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*/
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#if defined(SAUL_GPIO_NUMOF) && !(SAUL_GPIO_NUMOF > 0)
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void auto_init_gpio(void)
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{
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/* do nothing, no GPIO configured for SAUL */
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LOG_DEBUG("[auto_init_saul] no SAUL GPIO configured!\n");
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}
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#else
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#define SAUL_GPIO_NUMOF ARRAY_SIZE(saul_gpio_params)
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/**
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* @brief Memory for the registry entries
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*/
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static saul_reg_t saul_reg_entries[SAUL_GPIO_NUMOF];
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/**
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* @brief Reference the input mode driver struct
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*/
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extern saul_driver_t gpio_in_saul_driver;
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/**
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* @brief Reference to the output mode driver struct
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*/
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extern saul_driver_t gpio_out_saul_driver;
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void auto_init_gpio(void)
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{
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for (unsigned int i = 0; i < SAUL_GPIO_NUMOF; i++) {
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const saul_gpio_params_t *p = &saul_gpio_params[i];
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LOG_DEBUG("[auto_init_saul] initializing GPIO #%u\n", i);
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saul_reg_entries[i].dev = (void *)p;
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saul_reg_entries[i].name = p->name;
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if ((p->mode == GPIO_IN) || (p->mode == GPIO_IN_PD) ||
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(p->mode == GPIO_IN_PU)) {
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saul_reg_entries[i].driver = &gpio_in_saul_driver;
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}
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else {
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saul_reg_entries[i].driver = &gpio_out_saul_driver;
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}
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/* initialize the GPIO pin */
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gpio_init(p->pin, p->mode);
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/* set initial pin state if configured */
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if (p->flags & (SAUL_GPIO_INIT_CLEAR | SAUL_GPIO_INIT_SET)) {
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phydat_t s;
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s.val[0] = (p->flags & SAUL_GPIO_INIT_SET);
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saul_reg_entries[i].driver->write(p, &s);
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}
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/* add to registry */
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saul_reg_add(&(saul_reg_entries[i]));
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}
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}
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#endif
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