sravan/system76-embedded-controller
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Add global timer

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This commit is contained in:
Jeremy Soller
2020-02-03 15:16:17 -07:00
parent 3692bed6b2
commit ce22dd5208
11 changed files with 100 additions and 116 deletions
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33
src/board/system76/darp5/power.c
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@@ -1,6 +1,7 @@
#include <mcs51/8051.h>
#include <arch/delay.h>
#include <arch/time.h>
#include <board/battery.h>
#include <board/gpio.h>
#include <board/power.h>
@@ -342,33 +343,17 @@ void power_event(void) {
gpio_set(&LED_ACIN, false);
} else if (s4_new) {
// Suspended, flashing green light
static int8_t suspend_timer = 0;
if (suspend_timer <= 0) {
static uint32_t last_time = 0;
uint32_t time = time_get();
if (
(time < last_time) // overflow
||
(time >= (last_time + 1000)) // timeout
) {
gpio_set(&LED_PWR, !gpio_get(&LED_PWR));
// Suspend timer fires every 1 s
suspend_timer = 100;
last_time = time;
}
gpio_set(&LED_ACIN, false);
// If timer 1 is finished
if (TF1) {
// Stop timer 1 running
TR1 = 0;
// Clear timer 1 finished flag
TF1 = 0;
// Decrement suspend timer
suspend_timer -= 1;
}
// If timer 1 is not running
if (!TR1) {
// Start timer for 10 ms
// 65536-(10000 * 69 + 89)/90 = 0xE20C
TMOD = (TMOD & 0x0F) | 0x10;
TH1 = 0xE2;
TL1 = 0x0C;
TR1 = 1;
}
} else if (!ac_new) {
// AC plugged in, orange light
gpio_set(&LED_PWR, false);