421fbfae25
Instead of using a separate data structure to request that a PD remain powered during deep sleep, we do the same within the main LPM data structure through an additional field. This allows us to maintain only one linked list of LPM modules and overall improves code clarity
114 lines
4.3 KiB
C
114 lines
4.3 KiB
C
/*
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* Copyright (c) 2014, 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 sensortag-cc26xx-peripherals
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* @{
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*
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* \file
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* Board-initialisation for the Srf06EB with a CC26xx EM.
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*/
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/*---------------------------------------------------------------------------*/
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#include "contiki-conf.h"
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#include "ti-lib.h"
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#include "lpm.h"
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#include "prcm.h"
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#include "hw_sysctl.h"
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#include <stdint.h>
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#include <string.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(srf_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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/* Turn off 3.3-V domain (lcd/sdcard power, output low) */
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ti_lib_ioc_pin_type_gpio_output(BOARD_IOID_3V3_EN);
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ti_lib_gpio_pin_write(BOARD_3V3_EN, 0);
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/* Accelerometer (PWR output low, CSn output, high) */
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ti_lib_ioc_pin_type_gpio_output(BOARD_IOID_ACC_PWR);
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ti_lib_gpio_pin_write(BOARD_ACC_PWR, 0);
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/* Ambient light sensor (off, output low) */
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ti_lib_ioc_pin_type_gpio_output(BOARD_IOID_ALS_PWR);
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ti_lib_gpio_pin_write(BOARD_ALS_PWR, 0);
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ti_lib_ioc_pin_type_gpio_input(BOARD_IOID_ALS_OUT);
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ti_lib_ioc_io_port_pull_set(BOARD_IOID_ALS_OUT, IOC_NO_IOPULL);
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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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uint8_t 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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/* Configure all clock domains to run at full speed */
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ti_lib_prcm_clock_configure_set(PRCM_DOMAIN_SYSBUS | PRCM_DOMAIN_CPU |
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PRCM_DOMAIN_TIMER | PRCM_DOMAIN_SERIAL |
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PRCM_DOMAIN_PERIPH, PRCM_CLOCK_DIV_1);
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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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lpm_register_module(&srf_module);
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configure_unused_pins();
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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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