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stmhal, pin: Simplify default value for alternate function init.

This commit is contained in:
Damien George 2014-08-09 08:51:12 +01:00
parent 590b2abdfc
commit 04019e365f
1 changed files with 6 additions and 10 deletions
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16
stmhal/pin.c
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@ -299,7 +299,7 @@ STATIC mp_obj_t pin_debug(uint n_args, mp_obj_t *args) {
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(pin_debug_fun_obj, 1, 2, pin_debug);
STATIC MP_DEFINE_CONST_CLASSMETHOD_OBJ(pin_debug_obj, (mp_obj_t)&pin_debug_fun_obj);
/// \method init(mode, pull=Pin.PULL_NONE, af=None)
/// \method init(mode, pull=Pin.PULL_NONE, af=-1)
/// Initialise the pin:
///
/// - `mode` can be one of:
@ -320,7 +320,7 @@ STATIC MP_DEFINE_CONST_CLASSMETHOD_OBJ(pin_debug_obj, (mp_obj_t)&pin_debug_fun_o
STATIC const mp_arg_t pin_init_args[] = {
{ MP_QSTR_mode, MP_ARG_REQUIRED | MP_ARG_INT },
{ MP_QSTR_pull, MP_ARG_INT, {.u_int = GPIO_NOPULL}},
{ MP_QSTR_af, MP_ARG_OBJ, {.u_obj = mp_const_none}},
{ MP_QSTR_af, MP_ARG_INT, {.u_int = -1}},
};
#define PIN_INIT_NUM_ARGS MP_ARRAY_SIZE(pin_init_args)
@ -342,13 +342,9 @@ STATIC mp_obj_t pin_obj_init_helper(const pin_obj_t *self, uint n_args, const mp
}
// get af (alternate function)
mp_int_t af_idx = -1;
mp_obj_t af_obj = vals[2].u_obj;
if (af_obj != mp_const_none) {
af_idx = mp_obj_get_int(af_obj);
}
if ((mode == GPIO_MODE_AF_PP || mode == GPIO_MODE_AF_OD) && !IS_GPIO_AF(af_idx)) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "invalid pin af: %d", af_idx));
mp_int_t af = vals[2].u_int;
if ((mode == GPIO_MODE_AF_PP || mode == GPIO_MODE_AF_OD) && !IS_GPIO_AF(af)) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "invalid pin af: %d", af));
}
// enable the peripheral clock for the port of this pin
@ -391,7 +387,7 @@ STATIC mp_obj_t pin_obj_init_helper(const pin_obj_t *self, uint n_args, const mp
GPIO_InitStructure.Mode = mode;
GPIO_InitStructure.Pull = pull;
GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
GPIO_InitStructure.Alternate = af_idx;
GPIO_InitStructure.Alternate = af;
HAL_GPIO_Init(self->gpio, &GPIO_InitStructure);
return mp_const_none;