// (tmr-delay ['num] 'num) -> Nil
any tmr_delay(any ex) {
timer_data_type period;
unsigned id = PLATFORM_TIMER_SYS_ID;
any x, y;
x = cdr(ex), y = EVAL(car(x));
if (plen(ex) == 1) {
// We only have 1 parameter. Assume
// *tmr-sys-timer* and get the time
// period.
NeedNum(ex, y);
period = (timer_data_type)unBox(y);
} else {
// Minimum 2 args required here - the
// id and the period. Ignore the others.
NeedNum(ex, y);
id = unBox(y);
MOD_CHECK_TIMER(ex, id);
x = cdr(x), y = EVAL(car(x));
NeedNum(ex, y);
period = unBox(y);
}
platform_timer_delay(id, period);
return Nil;
}
// Lua: res = getmaxdelay( [id] )
static int tmr_getmaxdelay( lua_State* L )
{
timer_data_type res;
unsigned id;
id = ( unsigned )luaL_optinteger( L, 1, PLATFORM_TIMER_SYS_ID );
MOD_CHECK_TIMER( id );
res = platform_timer_op( id, PLATFORM_TIMER_OP_GET_MAX_DELAY, 0 );
lua_pushnumber( L, ( lua_Number )res );
return 1;
}
// Lua: delay( id, period )
static int tmr_delay( lua_State* L )
{
timer_data_type period;
unsigned id;
id = ( unsigned )luaL_optinteger( L, 1, PLATFORM_TIMER_SYS_ID );
MOD_CHECK_TIMER( id );
period = ( timer_data_type )luaL_checknumber( L, 2 );
platform_timer_delay( id, period );
return 0;
}
// Helper function for the read/start functions
static int tmrh_timer_op( lua_State* L, int op )
{
unsigned id;
timer_data_type res;
id = ( unsigned )luaL_optinteger( L, 1, PLATFORM_TIMER_SYS_ID );
MOD_CHECK_TIMER( id );
res = platform_timer_op( id, op, 0 );
lua_pushnumber( L, ( lua_Number )res );
return 1;
}
// Lua: clock = getclock( [id] )
static int tmr_getclock( lua_State* L )
{
u32 res;
unsigned id;
id = ( unsigned )luaL_optinteger( L, 1, PLATFORM_TIMER_SYS_ID );
MOD_CHECK_TIMER( id );
res = platform_timer_op( id, PLATFORM_TIMER_OP_GET_CLOCK, 0 );
lua_pushinteger( L, res );
return 1;
}
// Lua: time_us = getdiffnow( id, start )
static int tmr_getdiffnow( lua_State *L )
{
timer_data_type start, res;
unsigned id;
id = ( unsigned )luaL_optinteger( L, 1, PLATFORM_TIMER_SYS_ID );
MOD_CHECK_TIMER( id );
start = ( timer_data_type )luaL_checknumber( L, 2 );
res = platform_timer_get_diff_crt( id, start );
lua_pushnumber( L, ( lua_Number )res );
return 1;
}
// Lua: realclock = setclock( id, clock )
static int tmr_setclock( lua_State* L )
{
u32 clock;
unsigned id;
id = ( unsigned )luaL_optinteger( L, 1, PLATFORM_TIMER_SYS_ID );
MOD_CHECK_TIMER( id );
clock = ( u32 )luaL_checkinteger( L, 2 );
clock = platform_timer_op( id, PLATFORM_TIMER_OP_SET_CLOCK, clock );
lua_pushinteger( L, clock );
return 1;
}
// (tmr-getclock ['num]) -> num
any tmr_getclock(any ex) {
timer_data_type res;
unsigned id = PLATFORM_TIMER_SYS_ID;
any x, y;
x = cdr(ex), y = EVAL(car(x));
if (plen(ex) > 0) {
NeedNum(ex, y);
id = unBox(y);
MOD_CHECK_TIMER(ex, id);
}
res = platform_timer_op(id, PLATFORM_TIMER_OP_GET_CLOCK, 0);
return box(res);
}
// (tmr-start ['num]) -> num
any tmr_start(any ex) {
unsigned id = PLATFORM_TIMER_SYS_ID;
timer_data_type res;
any x, y;
x = cdr(ex), y = EVAL(car(x));
if (plen(ex) > 0) {
NeedNum(ex, y);
id = unBox(y);
MOD_CHECK_TIMER(ex, id);
}
res = platform_timer_op(id, PLATFORM_TIMER_OP_START, 0);
return box(res);
}
// Lua: set_match_int( id, timeout, type )
static int tmr_set_match_int( lua_State *L )
{
unsigned id;
u32 res;
id = ( unsigned )luaL_optinteger( L, 1, PLATFORM_TIMER_SYS_ID );
MOD_CHECK_TIMER( id );
res = platform_timer_set_match_int( id, ( timer_data_type )luaL_checknumber( L, 2 ), ( int )luaL_checkinteger( L, 3 ) );
if( res == PLATFORM_TIMER_INT_TOO_SHORT )
return luaL_error( L, "timer interval too small" );
else if( res == PLATFORM_TIMER_INT_TOO_LONG )
return luaL_error( L, "timer interval too long" );
else if( res == PLATFORM_TIMER_INT_INVALID_ID )
return luaL_error( L, "match interrupt cannot be set on this timer" );
return 0;
}
// (tmr-getdiffnow 'num 'num) -> num
any tmr_getdiffnow(any ex) {
timer_data_type start, res;
unsigned id;
any x, y;
x = cdr(ex), y = EVAL(car(x));
NeedNum(ex, y);
id = unBox(y); // get id.
MOD_CHECK_TIMER(ex, id);
x = cdr(x), y = EVAL(car(x));
NeedNum(ex, y);
start = unBox(y); // get start.
res = platform_timer_get_diff_crt(id, start);
return box(res);
}
// (tmr-setclock 'num 'num) -> num
any tmr_setclock(any ex) {
u32 clock;
unsigned id;
any x, y;
x = cdr(ex), y = EVAL(car(x));
NeedNum(ex, y);
id = unBox(y); // get id.
MOD_CHECK_TIMER(ex, id);
x = cdr(x), y = EVAL(car(x));
NeedNum(ex, y);
clock = unBox(y); // get clock.
clock = platform_timer_op(id, PLATFORM_TIMER_OP_SET_CLOCK, clock);
return box(clock);
}
// (tmr-gettimediff 'num 'num 'num) -> num
any tmr_gettimediff(any ex) {
timer_data_type start, end, res;
unsigned id = PLATFORM_TIMER_SYS_ID;
any x, y;
x = cdr(ex), y = EVAL(car(x));
NeedNum(ex, y);
id = unBox(y); // get id.
MOD_CHECK_TIMER(ex, id);
x = cdr(x), y = EVAL(car(x));
NeedNum(ex, y);
start = unBox(y); // get start.
x = cdr(x), y = EVAL(car(x));
NeedNum(ex, y);
end = unBox(y); // get end.
res = platform_timer_get_diff_us(id, start, end);
return box(res);
}