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moved rumble to thread + prevent rapid vacillation

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This commit is contained in:
Shaun Inman 2023-02-15 08:50:00 -05:00
parent 81734e10c0
commit db6b1a9301
3 changed files with 71 additions and 7 deletions
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57
src/common/api.c
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@ -6,6 +6,7 @@
#include <fcntl.h>
#include <unistd.h>
#include <pthread.h>
#include <SDL/SDL.h>
#include <SDL/SDL_image.h>
@ -1005,6 +1006,58 @@ int PAD_justRepeated(int btn) { return pad.just_repeated & btn; }
///////////////////////////////
static struct VIB_Context {
pthread_t pt;
int queued_strength;
int strength;
} vib;
static void* VIB_thread(void *arg) {
char buffer[4];
#define DEFER_FRAMES 3
static int defer = 0;
while(1) {
SDL_Delay(17);
if (vib.queued_strength!=vib.strength) {
if (defer<DEFER_FRAMES && vib.queued_strength==0) { // minimize vacillation between 0 and some number (which this motor doesn't like)
defer += 1;
continue;
}
vib.strength = vib.queued_strength;
defer = 0;
int val = MAX(0, MIN((100 * (vib.strength+1))>>16, 100));
sprintf(buffer, "%i", val);
int fd = open("/sys/class/power_supply/battery/moto", O_WRONLY);
if (fd>0) {
write(fd, buffer, strlen(buffer));
close(fd);
}
}
}
return 0;
}
void VIB_init(void) {
vib.queued_strength = vib.strength = 0;
pthread_create(&vib.pt, NULL, &VIB_thread, NULL);
}
void VIB_quit(void) {
VIB_setStrength(0);
pthread_cancel(vib.pt);
pthread_join(vib.pt, NULL);
}
void VIB_setStrength(int strength) {
if (vib.queued_strength==strength) return;
vib.queued_strength = strength;
}
int VIB_getStrength(void) {
return vib.strength;
}
///////////////////////////////
// TODO: separate settings/battery and power management?
void POW_update(int* _dirty, int* _show_setting, POW_callback_t before_sleep, POW_callback_t after_sleep) {
int dirty = _dirty ? *_dirty : 0;
@ -1174,6 +1227,7 @@ int POW_isCharging(void) {
return getInt("/sys/class/power_supply/battery/charger_online");
}
int POW_getBattery(void) { // 5-100 in 25% fragments
// TODO: move to infrequently called thread
int i = getInt("/sys/class/power_supply/battery/voltage_now") / 10000; // 310-410
i -= 310; // ~0-100
@ -1185,6 +1239,3 @@ int POW_getBattery(void) { // 5-100 in 25% fragments
if (i>10) return 20;
else return 10;
}
void POW_setRumble(int strength) {
putInt("/sys/class/power_supply/battery/moto", strength);
}