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/* LED control
*
* (C) 2015-2017 by Harald Welte <hwelte@hmw-consulting.de>
* (C) 2018 by sysmocom -s.f.m.c. GmbH, Author: Kevin Redon <kredon@sysmocom.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
*/
#include <stdint.h>
#include <string.h>
#include <assert.h>
#include <osmocom/core/timer.h>
#include "board.h"
#include "utils.h"
#include "led.h"
#ifdef PINS_LEDS
static const Pin pinsLeds[] = { PINS_LEDS } ;
static void led_set(enum led led, int on)
{
ASSERT(led < PIO_LISTSIZE(pinsLeds));
if (on)
PIO_Clear(&pinsLeds[led]);
else
PIO_Set(&pinsLeds[led]);
}
/* LED blinking code */
/* a single state in a sequence of blinking */
struct blink_state {
/* duration of the state in ms */
uint16_t duration;
/* brightness of LED during the state */
uint8_t on;
} __attribute__((packed));
static const struct blink_state bs_off[] = {
{ 0, 0 }
};
static const struct blink_state bs_on[] = {
{ 0, 1 }
};
static const struct blink_state bs_3on_5off[] = {
{ 300, 1 }, { 500, 0 }
};
static const struct blink_state bs_3on_30off[] = {
{ 300, 1 }, { 3000, 0 }
};
static const struct blink_state bs_3on_1off_3on_30off[] = {
{ 300, 1 }, { 100, 0 }, { 300, 1 }, { 3000, 0 }
};
static const struct blink_state bs_3on_1off_3on_1off_3on_30off[] = {
{ 300, 1 }, { 100, 0 }, { 300, 1 }, { 100, 0 }, { 300, 1 }, { 3000, 0 }
};
static const struct blink_state bs_2on_off[] = {
{ 200, 1 }, { 0, 0 },
};
static const struct blink_state bs_200on_off[] = {
{ 20000, 1 }, { 0, 0 },
};
static const struct blink_state bs_600on_off[] = {
{ 60000, 1 }, { 0, 0 },
};
/* a blink pattern is an array of blink_states */
struct blink_pattern {
const struct blink_state *states;
uint16_t size;
};
/* compiled-in default blinking patterns */
static const struct blink_pattern patterns[] = {
[BLINK_ALWAYS_OFF] = {
.states = bs_off,
.size = ARRAY_SIZE(bs_off),
},
[BLINK_ALWAYS_ON] = {
.states = bs_on,
.size = ARRAY_SIZE(bs_on),
},
[BLINK_3O_5F] = {
.states = bs_3on_5off,
.size = ARRAY_SIZE(bs_3on_5off),
},
[BLINK_3O_30F] = {
.states = bs_3on_30off,
.size = ARRAY_SIZE(bs_3on_30off),
},
[BLINK_3O_1F_3O_30F] = {
.states = bs_3on_1off_3on_30off,
.size = ARRAY_SIZE(bs_3on_1off_3on_30off),
},
[BLINK_3O_1F_3O_1F_3O_30F] = {
.states = bs_3on_1off_3on_1off_3on_30off,
.size = ARRAY_SIZE(bs_3on_1off_3on_1off_3on_30off),
},
[BLINK_2O_F] = {
.states = bs_2on_off,
.size = ARRAY_SIZE(bs_2on_off),
},
[BLINK_200O_F] = {
.states = bs_200on_off,
.size = ARRAY_SIZE(bs_200on_off),
},
[BLINK_600O_F] = {
.states = bs_600on_off,
.size = ARRAY_SIZE(bs_600on_off),
},
};
struct led_state {
/* which led are we handling */
enum led led;
/* timer */
struct osmo_timer_list timer;
/* pointer and size of blink array */
const struct blink_pattern *pattern;
unsigned int cur_state;
unsigned int illuminated;
/* static allocated space for custom blinking pattern */
struct blink_pattern pattern_cust;
struct blink_state blink_cust[10];
};
static unsigned int cur_state_inc(struct led_state *ls)
{
ls->cur_state = (ls->cur_state + 1) % ls->pattern->size;
return ls->cur_state;
}
static const struct blink_state *
next_blink_state(struct led_state *ls)
{
return &ls->pattern->states[cur_state_inc(ls)];
}
/* apply the next state to the LED */
static void apply_blinkstate(struct led_state *ls,
const struct blink_state *bs)
{
led_set(ls->led, bs->on);
ls->illuminated = bs->on;
/* re-schedule the timer */
if (bs->duration) {
uint32_t us = bs->duration * 1000;
osmo_timer_schedule(&ls->timer, us / 1000000, us % 1000000);
}
}
static void blink_tmr_cb(void *data)
{
struct led_state *ls = data;
const struct blink_state *next_bs = next_blink_state(ls);
/* apply the next state to the LED */
apply_blinkstate(ls, next_bs);
}
static struct led_state led_state[] = {
[LED_RED] = {
.led = LED_RED,
.timer.cb = blink_tmr_cb,
.timer.data = &led_state[LED_RED],
},
[LED_GREEN] = {
.led = LED_GREEN,
.timer.cb = blink_tmr_cb,
.timer.data = &led_state[LED_GREEN],
},
};
#endif /* PINS_LEDS */
void led_blink(enum led led, enum led_pattern blink)
{
#ifdef PINS_LEDS
struct led_state *ls;
if (led >= ARRAY_SIZE(led_state))
return;
ls = &led_state[led];
/* stop previous blinking, if any */
osmo_timer_del(&ls->timer);
led_set(led, 0);
ls->illuminated = 0;
ls->pattern = NULL;
ls->cur_state = 0;
switch (blink) {
case BLINK_CUSTOM:
ls->pattern = &ls->pattern_cust;
break;
default:
if (blink >= ARRAY_SIZE(patterns))
return;
ls->pattern = &patterns[blink];
break;
}
if (ls->pattern && ls->pattern->size > 0)
apply_blinkstate(ls, &ls->pattern->states[0]);
#endif
}
enum led_pattern led_get(enum led led)
{
#ifdef PINS_LEDS
struct led_state *ls;
unsigned int i;
if (led >= ARRAY_SIZE(led_state))
return -1;
ls = &led_state[led];
if (ls->pattern == &ls->pattern_cust)
return BLINK_CUSTOM;
for (i = 0; i < ARRAY_SIZE(patterns); i++) {
if (ls->pattern == &patterns[i])
return i;
}
#endif
/* default case, shouldn't be reached */
return -1;
}
void led_start(void)
{
led_set(LED_GREEN, led_state[LED_GREEN].illuminated);
led_set(LED_RED, led_state[LED_RED].illuminated);
}
void led_stop(void)
{
led_set(LED_GREEN, 0);
led_set(LED_RED, 0);
}
void led_init(void)
{
#ifdef PINS_LEDS
PIO_Configure(pinsLeds, PIO_LISTSIZE(pinsLeds));
led_set(LED_GREEN, 0);
led_set(LED_RED, 0);
#endif
}
void led_fini(void)
{
#ifdef PINS_LEDS
/* we don't actually need to do this, but just in case... */
osmo_timer_del(&led_state[LED_RED].timer);
osmo_timer_del(&led_state[LED_GREEN].timer);
led_set(LED_GREEN, 0);
led_set(LED_RED, 0);
#endif
}
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