contiki/platform/zoul/remote/power-mgmt.c

221 lines
6.4 KiB
C

/*
* Copyright (c) 2015, Zolertia - http://www.zolertia.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 Institute 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 INSTITUTE 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 INSTITUTE 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 remote-power-mgmt
* @{
*
* RE-Mote power management and shutdown mode
* @{
*
* \author
* Aitor Mejias <amejias@zolertia.com>
* Antonio Lignan <alinan@zolertia.com>
*/
/* -------------------------------------------------------------------------- */
#include <stdio.h>
#include <stdint.h>
#include "contiki.h"
#include "dev/gpio.h"
#include "sys/rtimer.h"
#include "power-mgmt.h"
/* -------------------------------------------------------------------------- */
#define DEBUG 0
#if DEBUG
#define PRINTF(...) printf(__VA_ARGS__)
#else
#define PRINTF(...)
#endif
/* -------------------------------------------------------------------------- */
#define PM_CMD_LINE_SET GPIO_SET_PIN(PM_CMD_PORT_BASE, PM_CMD_PIN_MASK)
#define PM_CMD_LINE_CLR GPIO_CLR_PIN(PM_CMD_PORT_BASE, PM_CMD_PIN_MASK)
#define PM_CMD_LINE_READ GPIO_READ_PIN(PM_CMD_PORT_BASE, PM_CMD_PIN_MASK)
#define PM_CMD_AS_OUTPUT GPIO_SET_OUTPUT(PM_CMD_PORT_BASE, PM_CMD_PIN_MASK)
#define PM_CMD_AS_INPUT GPIO_SET_INPUT(PM_CMD_PORT_BASE, PM_CMD_PIN_MASK)
/* -------------------------------------------------------------------------- */
#define PM_NUMBITS(X) (1 << ((X) - 1))
/* -------------------------------------------------------------------------- */
static uint8_t initialized = 0;
static uint8_t getData = 0;
/* -------------------------------------------------------------------------- */
static int8_t
pm_get_ack(void)
{
uint16_t error = PM_ERROR;
PM_CMD_AS_INPUT;
clock_delay_usec(PM_3_MILISECOND);
if(PM_CMD_LINE_READ) {
error = PM_SUCCESS;
}
clock_delay_usec(PM_10_MILISECOND);
PM_CMD_AS_OUTPUT;
return error;
}
/* -------------------------------------------------------------------------- */
static int8_t
pm_send_cmd(uint8_t cmd)
{
uint8_t i;
PRINTF("PM: cmd %u\n", cmd);
/* Enter command mode */
PM_CMD_LINE_SET;
clock_delay_usec(PM_1_MILISECOND);
PM_CMD_LINE_CLR;
/* Send command */
for (i = PM_MAX_BITS; i > 0; i--) {
clock_delay_usec(PM_1_MILISECOND);
if (cmd & PM_NUMBITS(i)) {
PM_CMD_LINE_SET;
}
else PM_CMD_LINE_CLR;
}
clock_delay_usec(PM_1_MILISECOND);
PM_CMD_LINE_CLR;
/* Receive command reply if any */
if((cmd == PM_CMD_GET_STATE) || (cmd == PM_CMD_GET_FW_VERSION)) {
PM_CMD_AS_INPUT;
clock_delay_usec(PM_2_2_MILISECOND);
for (i = PM_MAX_BITS; i > 0; i--) {
clock_delay_usec(PM_1_MILISECOND);
PM_CMD_LINE_READ ? (getData |= PM_NUMBITS(i)) : (getData &= ~PM_NUMBITS(i));
}
PRINTF("PM: getData = 0x%02X\n", getData);
clock_delay_usec(PM_2_2_MILISECOND);
PM_CMD_AS_OUTPUT;
PM_CMD_LINE_CLR;
clock_delay_usec(PM_2_2_MILISECOND);
return PM_SUCCESS;
}
/* Default case */
clock_delay_usec(PM_1_MILISECOND);
return pm_get_ack();
}
/* -------------------------------------------------------------------------- */
int8_t
pm_init(void)
{
/* Configure and clear immediately */
GPIO_SOFTWARE_CONTROL(PM_DONE_PORT_BASE, PM_DONE_PIN_MASK);
GPIO_SET_OUTPUT(PM_DONE_PORT_BASE, PM_DONE_PIN_MASK);
GPIO_CLR_PIN(PM_DONE_PORT_BASE, PM_DONE_PIN_MASK);
/* Set as output/low to set IDLE state */
GPIO_SOFTWARE_CONTROL(PM_CMD_PORT_BASE, PM_CMD_PIN_MASK);
PM_CMD_AS_OUTPUT;
PM_CMD_LINE_CLR;
/* Ensure the battery charger is on, so we don't lock ourselves out and left
* stranded in a state the CC2538 and components are kept off
*/
if(pm_send_cmd(PM_CMD_PWR_ON) == PM_SUCCESS) {
initialized = 1;
PRINTF("PM: Initialized\n");
return PM_SUCCESS;
}
PRINTF("PM: Failed to initialize\n");
return PM_ERROR;
}
/* -------------------------------------------------------------------------- */
int8_t
pm_enable_timer(void)
{
if(!initialized) {
return PM_ERROR;
}
if(pm_send_cmd(PM_CMD_DTIMER_ON) == PM_SUCCESS) {
return PM_SUCCESS;
}
return PM_ERROR;
}
/* -------------------------------------------------------------------------- */
int8_t
pm_disable_timer(void)
{
if(!initialized) {
return PM_ERROR;
}
if(pm_send_cmd(PM_CMD_DTIMER_OFF) == PM_SUCCESS) {
return PM_SUCCESS;
}
return PM_ERROR;
}
/* -------------------------------------------------------------------------- */
int8_t
pm_get_state(uint8_t *state)
{
if(!initialized) {
return PM_ERROR;
}
if(pm_send_cmd(PM_CMD_GET_STATE) == PM_SUCCESS) {
*state = getData;
PRINTF("PM: state %u\n", getData);
return PM_SUCCESS;
}
return PM_ERROR;
}
/* -------------------------------------------------------------------------- */
int8_t
pm_get_firmware_version(uint8_t *state)
{
if(!initialized) {
return PM_ERROR;
}
if (pm_send_cmd(PM_CMD_GET_FW_VERSION) == PM_SUCCESS) {
*state = getData;
printf("PM: FW Version %u\n", getData);
return PM_SUCCESS;
}
return PM_ERROR;
}
/*---------------------------------------------------------------------------*/
/**
* @}
* @}
*/