stmhal: Fix problem when passing callback= to timer init function.
In particular, make sure that the globals are all initialized before enabling the interrupt, and also make sure that the timer interrupt has been initialied before enabling the NVIC.
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@ -648,6 +648,11 @@ STATIC mp_obj_t pyb_timer_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t
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default: nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "Timer %d does not exist", tim->tim_id));
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}
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// set the global variable for interrupt callbacks
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if (tim->tim_id - 1 < PYB_TIMER_OBJ_ALL_NUM) {
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MP_STATE_PORT(pyb_timer_obj_all)[tim->tim_id - 1] = tim;
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}
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if (n_args > 1 || n_kw > 0) {
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// start the peripheral
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mp_map_t kw_args;
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@ -655,11 +660,6 @@ STATIC mp_obj_t pyb_timer_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t
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pyb_timer_init_helper(tim, n_args - 1, args + 1, &kw_args);
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}
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// set the global variable for interrupt callbacks
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if (tim->tim_id - 1 < PYB_TIMER_OBJ_ALL_NUM) {
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MP_STATE_PORT(pyb_timer_obj_all)[tim->tim_id - 1] = tim;
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}
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return (mp_obj_t)tim;
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}
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@ -1043,9 +1043,9 @@ STATIC mp_obj_t pyb_timer_callback(mp_obj_t self_in, mp_obj_t callback) {
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self->callback = mp_const_none;
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} else if (mp_obj_is_callable(callback)) {
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self->callback = callback;
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HAL_NVIC_EnableIRQ(self->irqn);
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// start timer, so that it interrupts on overflow
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HAL_TIM_Base_Start_IT(&self->tim);
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HAL_NVIC_EnableIRQ(self->irqn);
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} else {
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nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "callback must be None or a callable object"));
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}
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