diff options
Diffstat (limited to 'cc3200/mods/pybadc.c')
| -rw-r--r-- | cc3200/mods/pybadc.c | 34 |
1 files changed, 25 insertions, 9 deletions
diff --git a/cc3200/mods/pybadc.c b/cc3200/mods/pybadc.c index a619362601..446fb40033 100644 --- a/cc3200/mods/pybadc.c +++ b/cc3200/mods/pybadc.c @@ -64,14 +64,25 @@ /// /// The sample rate is fixed to 62.5KHz and the resolution to 12 bits. -typedef struct _pyb_obj_adc_t { + +/****************************************************************************** + DECLARE CONSTANTS + ******************************************************************************/ +#define PYB_ADC_NUM_CHANNELS 4 + +/****************************************************************************** + DEFINE TYPES + ******************************************************************************/ +typedef struct { mp_obj_base_t base; byte channel; byte num; -} pyb_obj_adc_t; +} pyb_adc_obj_t; - -STATIC void pybadc_init (pyb_obj_adc_t *self) { +/****************************************************************************** + DEFINE PUBLIC FUNCTIONS + ******************************************************************************/ +STATIC void pybadc_init (pyb_adc_obj_t *self) { // enable the ADC channel MAP_ADCChannelEnable(ADC_BASE, self->channel); // enable and configure the timer @@ -81,11 +92,16 @@ STATIC void pybadc_init (pyb_obj_adc_t *self) { MAP_ADCEnable(ADC_BASE); } +/****************************************************************************** + DECLARE PRIVATE DATA + ******************************************************************************/ +STATIC pyb_adc_obj_t pyb_adc_obj[PYB_ADC_NUM_CHANNELS]; + /******************************************************************************/ /* Micro Python bindings : adc object */ STATIC void adc_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) { - pyb_obj_adc_t *self = self_in; + pyb_adc_obj_t *self = self_in; print(env, "<ADC, channel=%u>", self->num); } @@ -123,7 +139,7 @@ STATIC mp_obj_t adc_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, } // disable the callback before re-configuring - pyb_obj_adc_t *self = m_new_obj_with_finaliser(pyb_obj_adc_t); + pyb_adc_obj_t *self = &pyb_adc_obj[channel]; self->base.type = &pyb_adc_type; self->channel = channel; self->num = num; @@ -144,7 +160,7 @@ STATIC mp_obj_t adc_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, /// Read the value on the analog pin and return it. The returned value /// will be between 0 and 4095. STATIC mp_obj_t adc_read(mp_obj_t self_in) { - pyb_obj_adc_t *self = self_in; + pyb_adc_obj_t *self = self_in; uint32_t sample; // wait until a new value is available @@ -159,7 +175,7 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_1(adc_read_obj, adc_read); /// \method enable() /// Enable the adc channel STATIC mp_obj_t adc_enable(mp_obj_t self_in) { - pyb_obj_adc_t *self = self_in; + pyb_adc_obj_t *self = self_in; pybadc_init(self); return mp_const_none; @@ -169,7 +185,7 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_1(adc_enable_obj, adc_enable); /// \method disable() /// Disable the adc channel STATIC mp_obj_t adc_disable(mp_obj_t self_in) { - pyb_obj_adc_t *self = self_in; + pyb_adc_obj_t *self = self_in; MAP_ADCChannelDisable(ADC_BASE, self->channel); // unregister it with the sleep module |