osd-contiki/platform/srf06-cc26xx/srf06/board.c

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/*
* Copyright (c) 2014, Texas Instruments Incorporated - http://www.ti.com/
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*---------------------------------------------------------------------------*/
/**
* \addtogroup sensortag-cc26xx-peripherals
* @{
*
* \file
* Board-initialisation for the Srf06EB with a CC26xx EM.
*/
/*---------------------------------------------------------------------------*/
#include "contiki-conf.h"
#include "ti-lib.h"
#include "lpm.h"
#include "prcm.h"
#include "hw_sysctl.h"
#include <stdint.h>
#include <string.h>
/*---------------------------------------------------------------------------*/
static void
wakeup_handler(void)
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{
/* Turn on the PERIPH PD */
ti_lib_prcm_power_domain_on(PRCM_DOMAIN_PERIPH);
while((ti_lib_prcm_power_domain_status(PRCM_DOMAIN_PERIPH)
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!= PRCM_DOMAIN_POWER_ON));
}
/*---------------------------------------------------------------------------*/
/*
* Declare a data structure to register with LPM.
* We don't care about what power mode we'll drop to, we don't care about
* getting notified before deep sleep. All we need is to be notified when we
* wake up so we can turn power domains back on
*/
LPM_MODULE(srf_module, NULL, NULL, wakeup_handler, LPM_DOMAIN_NONE);
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/*---------------------------------------------------------------------------*/
static void
configure_unused_pins(void)
{
/* Turn off 3.3-V domain (lcd/sdcard power, output low) */
ti_lib_ioc_pin_type_gpio_output(BOARD_IOID_3V3_EN);
ti_lib_gpio_pin_write(BOARD_3V3_EN, 0);
/* Accelerometer (PWR output low, CSn output, high) */
ti_lib_ioc_pin_type_gpio_output(BOARD_IOID_ACC_PWR);
ti_lib_gpio_pin_write(BOARD_ACC_PWR, 0);
/* Ambient light sensor (off, output low) */
ti_lib_ioc_pin_type_gpio_output(BOARD_IOID_ALS_PWR);
ti_lib_gpio_pin_write(BOARD_ALS_PWR, 0);
ti_lib_ioc_pin_type_gpio_input(BOARD_IOID_ALS_OUT);
ti_lib_ioc_io_port_pull_set(BOARD_IOID_ALS_OUT, IOC_NO_IOPULL);
}
/*---------------------------------------------------------------------------*/
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void
board_init()
{
uint8_t int_disabled = ti_lib_int_master_disable();
/* Turn on relevant PDs */
wakeup_handler();
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/* Enable GPIO peripheral */
ti_lib_prcm_peripheral_run_enable(PRCM_PERIPH_GPIO);
/* Apply settings and wait for them to take effect */
ti_lib_prcm_load_set();
while(!ti_lib_prcm_load_get());
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lpm_register_module(&srf_module);
configure_unused_pins();
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/* Re-enable interrupt if initially enabled. */
if(!int_disabled) {
ti_lib_int_master_enable();
}
}
/*---------------------------------------------------------------------------*/
/** @} */