djsundog/circuitpython
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

cc3200: Set the timer edge count interrupt value in the calbback const.

Browse Source
This commit is contained in:
Daniel Campora 2015-05-17 16:11:12 +02:00
parent 95a4f61499
commit 6f848b6dba
1 changed files with 13 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
cc3200/mods/pybtimer.c
View File

@ -349,7 +349,7 @@ STATIC mp_obj_t pyb_timer_init_helper(pyb_timer_obj_t *tim, mp_uint_t n_args, co
timer_init(tim);
// register it with the sleep module
pybsleep_add ((const mp_obj_t)tim, (WakeUpCB_t)timer_channel_init);
pybsleep_add ((const mp_obj_t)tim, (WakeUpCB_t)timer_init);
return mp_const_none;
@ -431,7 +431,6 @@ STATIC mp_obj_t pyb_timer_channel(mp_uint_t n_args, const mp_obj_t *pos_args, mp
if (!tim->config) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_request_not_possible));
}
if (channel_n != TIMER_A && channel_n != TIMER_B && channel_n != (TIMER_A | TIMER_B)) {
// invalid channel
goto error;
@ -463,10 +462,6 @@ STATIC mp_obj_t pyb_timer_channel(mp_uint_t n_args, const mp_obj_t *pos_args, mp
if ((tim->config & TIMER_A) == TIMER_CFG_A_PWM && args[1].u_int == (PYBTIMER_POLARITY_POS | PYBTIMER_POLARITY_NEG)) {
goto error;
}
// check the range of the duty cycle
if (args[2].u_int < 0 || args[2].u_int > 100) {
goto error;
}
// allocate a new timer channel
pyb_timer_channel_obj_t *ch = m_new_obj(pyb_timer_channel_obj_t);
@ -477,10 +472,13 @@ STATIC mp_obj_t pyb_timer_channel(mp_uint_t n_args, const mp_obj_t *pos_args, mp
// get the frequency the polarity and the duty cycle
ch->frequency = args[0].u_int;
ch->polarity = args[1].u_int;
ch->duty_cycle = args[2].u_int;
ch->duty_cycle = MIN(100, MAX(0, args[2].u_int));
timer_channel_init(ch);
// register it with the sleep module
pybsleep_add ((const mp_obj_t)ch, (WakeUpCB_t)timer_channel_init);
// add the timer to the list
pyb_timer_channel_add(ch);
@ -687,7 +685,7 @@ STATIC mp_obj_t pyb_timer_channel_duty_cycle(mp_uint_t n_args, const mp_obj_t *a
// calculate the period, the prescaler and the match value
uint32_t period;
uint32_t match;
ch->duty_cycle = mp_obj_get_int(args[1]);
ch->duty_cycle = MIN(100, MAX(0, mp_obj_get_int(args[1])));
compute_prescaler_period_and_match_value(ch, &period, &match);
if (n_args == 3) {
// set the new polarity if requested
@ -742,7 +740,7 @@ STATIC mp_obj_t pyb_timer_channel_callback (mp_uint_t n_args, const mp_obj_t *po
break;
}
if (ch->channel == (TIMER_A | TIMER_B)) {
// again a special case for the match interrupt
// again a special case for the pwm match interrupt
if (_config == TIMER_CFG_A_PWM) {
ch->timer->intflags |= TIMER_TIMB_MATCH;
} else {
@ -798,11 +796,17 @@ STATIC mp_obj_t pyb_timer_channel_callback (mp_uint_t n_args, const mp_obj_t *po
// create the callback
_callback = mpcallback_new (ch, args[1].u_obj, &pyb_timer_channel_cb_methods);
// get the value if given
uint32_t c_value = MAX(0, args[3].u_int);
ch->duty_cycle = MIN(100, c_value);
// reload the timer
uint32_t period;
uint32_t match;
compute_prescaler_period_and_match_value(ch, &period, &match);
MAP_TimerLoadSet(ch->timer->timer, ch->channel, period);
// set the appropiate match value
MAP_TimerMatchSet(ch->timer->timer, ch->channel, (_config == TIMER_CFG_A_PWM) ? match : c_value);
// enable the callback before returning
pyb_timer_channel_callback_enable(ch);