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stmhal/dac: DAC deinit() method added.

This commit is contained in:
Peter Hinch 2016-05-26 07:39:04 +01:00 committed by Paul Sokolovsky
parent ee009d713a
commit 641300dccb
2 changed files with 20 additions and 0 deletions
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4
docs/library/pyb.DAC.rst
View File

@ -66,6 +66,10 @@ Methods
Reinitialise the DAC. ``bits`` can be 8 or 12.
.. method:: dac.deinit()
De-initialise the DAC making its pin available for other uses.
.. method:: dac.noise(freq)
Generate a pseudo-random noise signal. A new random sample is written

16
stmhal/dac.c
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@ -246,6 +246,21 @@ STATIC mp_obj_t pyb_dac_init(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *k
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(pyb_dac_init_obj, 1, pyb_dac_init);
/// \method deinit()
/// Turn off the DAC, enable other use of pin.
STATIC mp_obj_t pyb_dac_deinit(mp_obj_t self_in) {
pyb_dac_obj_t *self = self_in;
if (self->dac_channel == DAC_CHANNEL_1) {
DAC_Handle.Instance->CR &= ~DAC_CR_EN1;
DAC_Handle.Instance->CR |= DAC_CR_BOFF1;
} else {
DAC_Handle.Instance->CR &= ~DAC_CR_EN2;
DAC_Handle.Instance->CR |= DAC_CR_BOFF2;
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_dac_deinit_obj, pyb_dac_deinit);
#if defined(TIM6)
/// \method noise(freq)
/// Generate a pseudo-random noise signal. A new random sample is written
@ -461,6 +476,7 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_KW(pyb_dac_write_timed_obj, 1, pyb_dac_write_time
STATIC const mp_map_elem_t pyb_dac_locals_dict_table[] = {
// instance methods
{ MP_OBJ_NEW_QSTR(MP_QSTR_init), (mp_obj_t)&pyb_dac_init_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_deinit), (mp_obj_t)&pyb_dac_deinit_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_write), (mp_obj_t)&pyb_dac_write_obj },
#if defined(TIM6)
{ MP_OBJ_NEW_QSTR(MP_QSTR_noise), (mp_obj_t)&pyb_dac_noise_obj },