416 lines
9.9 KiB
C
416 lines
9.9 KiB
C
|
/*
|
||
|
|
* Module for interfacing with cheap rotary switches that
|
||
|
|
* are much used in the automtive industry as the cntrols for
|
||
|
|
* CD players and the like.
|
||
|
|
*
|
||
|
|
* Philip Gladstone, N1DQ
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "module.h"
|
||
|
|
#include "lauxlib.h"
|
||
|
|
#include "platform.h"
|
||
|
|
#include "task/task.h"
|
||
|
|
#include <stdint.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include "user_interface.h"
|
||
|
|
#include "driver/rotary.h"
|
||
|
|
|
||
|
|
#define MASK(x) (1 << ROTARY_ ## x ## _INDEX)
|
||
|
|
|
||
|
|
#define ROTARY_PRESS_INDEX 0
|
||
|
|
#define ROTARY_LONGPRESS_INDEX 1
|
||
|
|
#define ROTARY_RELEASE_INDEX 2
|
||
|
|
#define ROTARY_TURN_INDEX 3
|
||
|
|
#define ROTARY_CLICK_INDEX 4
|
||
|
|
#define ROTARY_DBLCLICK_INDEX 5
|
||
|
|
|
||
|
|
#define ROTARY_ALL 0x3f
|
||
|
|
|
||
|
|
#define LONGPRESS_DELAY_US 500000
|
||
|
|
#define CLICK_DELAY_US 500000
|
||
|
|
|
||
|
|
#define CALLBACK_COUNT 6
|
||
|
|
|
||
|
|
#ifdef LUA_USE_MODULES_ROTARY
|
||
|
|
#if !defined(GPIO_INTERRUPT_ENABLE) || !defined(GPIO_INTERRUPT_HOOK_ENABLE)
|
||
|
|
#error Must have GPIO_INTERRUPT and GPIO_INTERRUPT_HOOK if using ROTARY module
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
int lastpos;
|
||
|
|
int last_recent_event_was_press : 1;
|
||
|
|
int last_recent_event_was_release : 1;
|
||
|
|
int timer_running : 1;
|
||
|
|
int possible_dbl_click : 1;
|
||
|
|
uint8_t id;
|
||
|
|
int click_delay_us;
|
||
|
|
int longpress_delay_us;
|
||
|
|
uint32_t last_event_time;
|
||
|
|
int callback[CALLBACK_COUNT];
|
||
|
|
ETSTimer timer;
|
||
|
|
} DATA;
|
||
|
|
|
||
|
|
static DATA *data[ROTARY_CHANNEL_COUNT];
|
||
|
|
static task_handle_t tasknumber;
|
||
|
|
static void lrotary_timer_done(void *param);
|
||
|
|
static void lrotary_check_timer(DATA *d, uint32_t time_us, bool dotimer);
|
||
|
|
|
||
|
|
static void callback_free_one(lua_State *L, int *cb_ptr)
|
||
|
|
{
|
||
|
|
if (*cb_ptr != LUA_NOREF) {
|
||
|
|
luaL_unref(L, LUA_REGISTRYINDEX, *cb_ptr);
|
||
|
|
*cb_ptr = LUA_NOREF;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void callback_free(lua_State* L, unsigned int id, int mask)
|
||
|
|
{
|
||
|
|
DATA *d = data[id];
|
||
|
|
|
||
|
|
if (d) {
|
||
|
|
int i;
|
||
|
|
for (i = 0; i < CALLBACK_COUNT; i++) {
|
||
|
|
if (mask & (1 << i)) {
|
||
|
|
callback_free_one(L, &d->callback[i]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static int callback_setOne(lua_State* L, int *cb_ptr, int arg_number)
|
||
|
|
{
|
||
|
|
if (lua_isfunction(L, arg_number)) {
|
||
|
|
lua_pushvalue(L, arg_number); // copy argument (func) to the top of stack
|
||
|
|
callback_free_one(L, cb_ptr);
|
||
|
|
*cb_ptr = luaL_ref(L, LUA_REGISTRYINDEX);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int callback_set(lua_State* L, int id, int mask, int arg_number)
|
||
|
|
{
|
||
|
|
DATA *d = data[id];
|
||
|
|
int result = 0;
|
||
|
|
|
||
|
|
int i;
|
||
|
|
for (i = 0; i < CALLBACK_COUNT; i++) {
|
||
|
|
if (mask & (1 << i)) {
|
||
|
|
result |= callback_setOne(L, &d->callback[i], arg_number);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void callback_callOne(lua_State* L, int cb, int mask, int arg, uint32_t time)
|
||
|
|
{
|
||
|
|
if (cb != LUA_NOREF) {
|
||
|
|
lua_rawgeti(L, LUA_REGISTRYINDEX, cb);
|
||
|
|
|
||
|
|
lua_pushinteger(L, mask);
|
||
|
|
lua_pushinteger(L, arg);
|
||
|
|
lua_pushinteger(L, time);
|
||
|
|
|
||
|
|
luaL_pcallx(L, 3, 0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void callback_call(lua_State* L, DATA *d, int cbnum, int arg, uint32_t time)
|
||
|
|
{
|
||
|
|
if (d) {
|
||
|
|
callback_callOne(L, d->callback[cbnum], 1 << cbnum, arg, time);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
int platform_rotary_exists( unsigned int id )
|
||
|
|
{
|
||
|
|
return (id < ROTARY_CHANNEL_COUNT);
|
||
|
|
}
|
||
|
|
|
||
|
|
#include "pm/swtimer.h"
|
||
|
|
|
||
|
|
// Lua: setup(id, phase_a, phase_b [, press])
|
||
|
|
static int lrotary_setup( lua_State* L )
|
||
|
|
{
|
||
|
|
unsigned int id;
|
||
|
|
|
||
|
|
id = luaL_checkinteger( L, 1 );
|
||
|
|
MOD_CHECK_ID( rotary, id );
|
||
|
|
|
||
|
|
if (rotary_close(id)) {
|
||
|
|
return luaL_error( L, "Unable to close switch." );
|
||
|
|
}
|
||
|
|
callback_free(L, id, ROTARY_ALL);
|
||
|
|
|
||
|
|
if (!data[id]) {
|
||
|
|
data[id] = (DATA *) calloc(1, sizeof(DATA));
|
||
|
|
if (!data[id]) {
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
DATA *d = data[id];
|
||
|
|
memset(d, 0, sizeof(*d));
|
||
|
|
|
||
|
|
d->id = id;
|
||
|
|
|
||
|
|
os_timer_setfn(&d->timer, lrotary_timer_done, (void *) d);
|
||
|
|
SWTIMER_REG_CB(lrotary_timer_done, SWTIMER_RESUME);
|
||
|
|
//lrotary_timer_done checks time elapsed since last event
|
||
|
|
//My guess: Since proper functionality relies on some variables to be reset via timer callback and state would be invalid anyway.
|
||
|
|
//It is probably best to resume this timer so it can reset it's state variables
|
||
|
|
|
||
|
|
|
||
|
|
int i;
|
||
|
|
for (i = 0; i < CALLBACK_COUNT; i++) {
|
||
|
|
d->callback[i] = LUA_NOREF;
|
||
|
|
}
|
||
|
|
|
||
|
|
d->click_delay_us = CLICK_DELAY_US;
|
||
|
|
d->longpress_delay_us = LONGPRESS_DELAY_US;
|
||
|
|
|
||
|
|
int phase_a = luaL_checkinteger(L, 2);
|
||
|
|
luaL_argcheck(L, platform_gpio_exists(phase_a) && phase_a > 0, 2, "Invalid pin");
|
||
|
|
int phase_b = luaL_checkinteger(L, 3);
|
||
|
|
luaL_argcheck(L, platform_gpio_exists(phase_b) && phase_b > 0, 3, "Invalid pin");
|
||
|
|
int press;
|
||
|
|
if (lua_gettop(L) >= 4) {
|
||
|
|
press = luaL_checkinteger(L, 4);
|
||
|
|
luaL_argcheck(L, platform_gpio_exists(press) && press > 0, 4, "Invalid pin");
|
||
|
|
} else {
|
||
|
|
press = -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (lua_gettop(L) >= 5) {
|
||
|
|
d->longpress_delay_us = 1000 * luaL_checkinteger(L, 5);
|
||
|
|
luaL_argcheck(L, d->longpress_delay_us > 0, 5, "Invalid timeout");
|
||
|
|
}
|
||
|
|
|
||
|
|
if (lua_gettop(L) >= 6) {
|
||
|
|
d->click_delay_us = 1000 * luaL_checkinteger(L, 6);
|
||
|
|
luaL_argcheck(L, d->click_delay_us > 0, 6, "Invalid timeout");
|
||
|
|
}
|
||
|
|
|
||
|
|
if (rotary_setup(id, phase_a, phase_b, press, tasknumber)) {
|
||
|
|
return luaL_error(L, "Unable to setup rotary switch.");
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Lua: close( id )
|
||
|
|
static int lrotary_close( lua_State* L )
|
||
|
|
{
|
||
|
|
unsigned int id;
|
||
|
|
|
||
|
|
id = luaL_checkinteger( L, 1 );
|
||
|
|
MOD_CHECK_ID( rotary, id );
|
||
|
|
callback_free(L, id, ROTARY_ALL);
|
||
|
|
|
||
|
|
DATA *d = data[id];
|
||
|
|
if (d) {
|
||
|
|
data[id] = NULL;
|
||
|
|
free(d);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (rotary_close( id )) {
|
||
|
|
return luaL_error( L, "Unable to close switch." );
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Lua: on( id, mask[, cb] )
|
||
|
|
static int lrotary_on( lua_State* L )
|
||
|
|
{
|
||
|
|
unsigned int id;
|
||
|
|
id = luaL_checkinteger( L, 1 );
|
||
|
|
MOD_CHECK_ID( rotary, id );
|
||
|
|
|
||
|
|
int mask = luaL_checkinteger(L, 2);
|
||
|
|
|
||
|
|
if (lua_gettop(L) >= 3) {
|
||
|
|
if (callback_set(L, id, mask, 3)) {
|
||
|
|
return luaL_error( L, "Unable to set callback." );
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
callback_free(L, id, mask);
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Lua: getpos( id ) -> pos, PRESS/RELEASE
|
||
|
|
static int lrotary_getpos( lua_State* L )
|
||
|
|
{
|
||
|
|
unsigned int id;
|
||
|
|
id = luaL_checkinteger( L, 1 );
|
||
|
|
MOD_CHECK_ID( rotary, id );
|
||
|
|
|
||
|
|
int pos = rotary_getpos(id);
|
||
|
|
|
||
|
|
if (pos == -1) {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
lua_pushinteger(L, (pos << 1) >> 1);
|
||
|
|
lua_pushinteger(L, (pos & 0x80000000) ? MASK(PRESS) : MASK(RELEASE));
|
||
|
|
|
||
|
|
return 2;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Returns TRUE if there maybe/is more stuff to do
|
||
|
|
static bool lrotary_dequeue_single(lua_State* L, DATA *d)
|
||
|
|
{
|
||
|
|
bool something_pending = FALSE;
|
||
|
|
|
||
|
|
if (d) {
|
||
|
|
// This chnnel is open
|
||
|
|
rotary_event_t result;
|
||
|
|
|
||
|
|
if (rotary_getevent(d->id, &result)) {
|
||
|
|
int pos = result.pos;
|
||
|
|
|
||
|
|
lrotary_check_timer(d, result.time_us, 0);
|
||
|
|
|
||
|
|
if (pos != d->lastpos) {
|
||
|
|
// We have something to enqueue
|
||
|
|
if ((pos ^ d->lastpos) & 0x7fffffff) {
|
||
|
|
// Some turning has happened
|
||
|
|
callback_call(L, d, ROTARY_TURN_INDEX, (pos << 1) >> 1, result.time_us);
|
||
|
|
}
|
||
|
|
if ((pos ^ d->lastpos) & 0x80000000) {
|
||
|
|
// pressing or releasing has happened
|
||
|
|
callback_call(L, d, (pos & 0x80000000) ? ROTARY_PRESS_INDEX : ROTARY_RELEASE_INDEX, (pos << 1) >> 1, result.time_us);
|
||
|
|
if (pos & 0x80000000) {
|
||
|
|
// Press
|
||
|
|
if (d->last_recent_event_was_release && result.time_us - d->last_event_time < d->click_delay_us) {
|
||
|
|
d->possible_dbl_click = 1;
|
||
|
|
}
|
||
|
|
d->last_recent_event_was_press = 1;
|
||
|
|
d->last_recent_event_was_release = 0;
|
||
|
|
} else {
|
||
|
|
// Release
|
||
|
|
d->last_recent_event_was_press = 0;
|
||
|
|
if (d->possible_dbl_click) {
|
||
|
|
callback_call(L, d, ROTARY_DBLCLICK_INDEX, (pos << 1) >> 1, result.time_us);
|
||
|
|
d->possible_dbl_click = 0;
|
||
|
|
// Do this to suppress the CLICK event
|
||
|
|
d->last_recent_event_was_release = 0;
|
||
|
|
} else {
|
||
|
|
d->last_recent_event_was_release = 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
d->last_event_time = result.time_us;
|
||
|
|
}
|
||
|
|
|
||
|
|
d->lastpos = pos;
|
||
|
|
}
|
||
|
|
|
||
|
|
something_pending = rotary_has_queued_event(d->id);
|
||
|
|
}
|
||
|
|
|
||
|
|
lrotary_check_timer(d, system_get_time(), 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
return something_pending;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void lrotary_timer_done(void *param)
|
||
|
|
{
|
||
|
|
DATA *d = (DATA *) param;
|
||
|
|
|
||
|
|
d->timer_running = 0;
|
||
|
|
|
||
|
|
lrotary_check_timer(d, system_get_time(), 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void lrotary_check_timer(DATA *d, uint32_t time_us, bool dotimer)
|
||
|
|
{
|
||
|
|
uint32_t delay = time_us - d->last_event_time;
|
||
|
|
if (d->timer_running) {
|
||
|
|
os_timer_disarm(&d->timer);
|
||
|
|
d->timer_running = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int timeout = -1;
|
||
|
|
|
||
|
|
if (d->last_recent_event_was_press) {
|
||
|
|
if (delay > d->longpress_delay_us) {
|
||
|
|
callback_call(lua_getstate(), d, ROTARY_LONGPRESS_INDEX, (d->lastpos << 1) >> 1, d->last_event_time + d->longpress_delay_us);
|
||
|
|
d->last_recent_event_was_press = 0;
|
||
|
|
} else {
|
||
|
|
timeout = (d->longpress_delay_us - delay) / 1000;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (d->last_recent_event_was_release) {
|
||
|
|
if (delay > d->click_delay_us) {
|
||
|
|
callback_call(lua_getstate(), d, ROTARY_CLICK_INDEX, (d->lastpos << 1) >> 1, d->last_event_time + d->click_delay_us);
|
||
|
|
d->last_recent_event_was_release = 0;
|
||
|
|
} else {
|
||
|
|
timeout = (d->click_delay_us - delay) / 1000;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (dotimer && timeout >= 0) {
|
||
|
|
d->timer_running = 1;
|
||
|
|
os_timer_arm(&d->timer, timeout + 1, 0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void lrotary_task(os_param_t param, uint8_t prio)
|
||
|
|
{
|
||
|
|
(void) param;
|
||
|
|
(void) prio;
|
||
|
|
|
||
|
|
uint8_t *task_queue_ptr = (uint8_t*) param;
|
||
|
|
if (task_queue_ptr) {
|
||
|
|
// Signal that new events may need another task post
|
||
|
|
*task_queue_ptr = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int id;
|
||
|
|
bool need_to_post = FALSE;
|
||
|
|
lua_State *L = lua_getstate();
|
||
|
|
|
||
|
|
for (id = 0; id < ROTARY_CHANNEL_COUNT; id++) {
|
||
|
|
DATA *d = data[id];
|
||
|
|
if (d) {
|
||
|
|
if (lrotary_dequeue_single(L, d)) {
|
||
|
|
need_to_post = TRUE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (need_to_post) {
|
||
|
|
// If there is pending stuff, queue another task
|
||
|
|
task_post_medium(tasknumber, 0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static int rotary_open(lua_State *L)
|
||
|
|
{
|
||
|
|
tasknumber = task_get_id(lrotary_task);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Module function map
|
||
|
|
LROT_BEGIN(rotary, NULL, 0)
|
||
|
|
LROT_FUNCENTRY( setup, lrotary_setup )
|
||
|
|
LROT_FUNCENTRY( close, lrotary_close )
|
||
|
|
LROT_FUNCENTRY( on, lrotary_on )
|
||
|
|
LROT_FUNCENTRY( getpos, lrotary_getpos )
|
||
|
|
LROT_NUMENTRY( TURN, MASK(TURN) )
|
||
|
|
LROT_NUMENTRY( PRESS, MASK(PRESS) )
|
||
|
|
LROT_NUMENTRY( RELEASE, MASK(RELEASE) )
|
||
|
|
LROT_NUMENTRY( LONGPRESS, MASK(LONGPRESS) )
|
||
|
|
LROT_NUMENTRY( CLICK, MASK(CLICK) )
|
||
|
|
LROT_NUMENTRY( DBLCLICK, MASK(DBLCLICK) )
|
||
|
|
LROT_NUMENTRY( ALL, ROTARY_ALL )
|
||
|
|
|
||
|
|
LROT_END(rotary, NULL, 0)
|
||
|
|
|
||
|
|
|
||
|
|
NODEMCU_MODULE(ROTARY, "rotary", rotary, rotary_open);
|