113 lines
4.0 KiB
C
113 lines
4.0 KiB
C
/*
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* Copyright (c) 2015, Texas Instruments Incorporated - http://www.ti.com/
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* All rights reserved.
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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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* 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 the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software 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 HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*---------------------------------------------------------------------------*/
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/**
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* \addtogroup launchpad-peripherals
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* @{
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*
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* \file
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* LaunchPad-specific board initialisation driver
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*/
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/*---------------------------------------------------------------------------*/
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#include "contiki.h"
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#include "lpm.h"
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#include "ti-lib.h"
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#include "board-peripherals.h"
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#include "rf-core/rf-switch.h"
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#include <stdint.h>
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#include <string.h>
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#include <stdbool.h>
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/*---------------------------------------------------------------------------*/
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static void
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wakeup_handler(void)
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{
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/* Turn on the PERIPH PD */
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ti_lib_prcm_power_domain_on(PRCM_DOMAIN_PERIPH);
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while(ti_lib_prcm_power_domain_status(PRCM_DOMAIN_PERIPH)
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!= PRCM_DOMAIN_POWER_ON);
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}
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/*---------------------------------------------------------------------------*/
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/*
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* Declare a data structure to register with LPM.
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* We don't care about what power mode we'll drop to, we don't care about
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* getting notified before deep sleep. All we need is to be notified when we
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* wake up so we can turn power domains back on
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*/
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LPM_MODULE(launchpad_module, NULL, NULL, wakeup_handler, LPM_DOMAIN_NONE);
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/*---------------------------------------------------------------------------*/
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static void
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configure_unused_pins(void)
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{
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uint32_t pins[] = BOARD_UNUSED_PINS;
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uint32_t *pin;
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for(pin = pins; *pin != IOID_UNUSED; pin++) {
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ti_lib_ioc_pin_type_gpio_input(*pin);
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ti_lib_ioc_io_port_pull_set(*pin, IOC_IOPULL_DOWN);
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}
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}
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/*---------------------------------------------------------------------------*/
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void
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board_init()
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{
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/* Disable global interrupts */
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bool int_disabled = ti_lib_int_master_disable();
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/* Turn on relevant PDs */
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wakeup_handler();
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/* Enable GPIO peripheral */
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ti_lib_prcm_peripheral_run_enable(PRCM_PERIPH_GPIO);
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/* Apply settings and wait for them to take effect */
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ti_lib_prcm_load_set();
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while(!ti_lib_prcm_load_get());
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/* Make sure the external flash is in the lower power mode */
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ext_flash_init(NULL);
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lpm_register_module(&launchpad_module);
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/* For unsupported peripherals, select a default pin configuration */
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configure_unused_pins();
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/* Initialise the RF switch if present */
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rf_switch_init();
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/* Re-enable interrupt if initially enabled. */
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if(!int_disabled) {
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ti_lib_int_master_enable();
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}
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}
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/*---------------------------------------------------------------------------*/
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/** @} */
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