kopia lustrzana https://github.com/micropython/micropython
cc3200: Add ADC module.
danicampora
rodzic
5d2344d009
commit
868fa82ea4
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@ -89,6 +89,7 @@ APP_MODS_SRC_C = $(addprefix mods/,\
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modusocket.c \
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modutime.c \
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modwlan.c \
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pybadc.c \
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pybextint.c \
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pybi2c.c \
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pybpin.c \
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@ -62,6 +62,7 @@
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#include "mpexception.h"
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#include "random.h"
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#include "pybextint.h"
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#include "pybadc.h"
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#include "pybi2c.h"
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#include "utils.h"
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@ -313,6 +314,7 @@ STATIC const mp_map_elem_t pyb_module_globals_table[] = {
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{ MP_OBJ_NEW_QSTR(MP_QSTR_Pin), (mp_obj_t)&pin_type },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_ExtInt), (mp_obj_t)&extint_type },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_ADC), (mp_obj_t)&pyb_adc_type },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_I2C), (mp_obj_t)&pyb_i2c_type },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_UART), (mp_obj_t)&pyb_uart_type },
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};
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@ -0,0 +1,183 @@
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/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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* Copyright (c) 2015 Daniel Campora
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdio.h>
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#include <string.h>
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#include "mpconfig.h"
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#include MICROPY_HAL_H
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#include "py/nlr.h"
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#include "py/runtime.h"
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#include "py/binary.h"
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#include "py/gc.h"
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#include "bufhelper.h"
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#include "inc/hw_types.h"
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#include "inc/hw_adc.h"
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#include "inc/hw_ints.h"
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#include "inc/hw_memmap.h"
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#include "rom_map.h"
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#include "interrupt.h"
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#include "pin.h"
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#include "prcm.h"
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#include "adc.h"
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#include "pybadc.h"
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#include "pybpin.h"
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#include "pins.h"
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#include "mpexception.h"
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/// \moduleref pyb
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/// \class ADC - analog to digital conversion: read analog values on a pin
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///
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/// Usage:
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///
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/// adc = pyb.ADC(channel) # create an adc object on the given channel (0 to 3)
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/// adc.read() # read channel value
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///
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/// The sample rate is fixed to 62.5KHz and the resolution to 12 bits.
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typedef struct _pyb_obj_adc_t {
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mp_obj_base_t base;
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byte channel;
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byte num;
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} pyb_obj_adc_t;
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/******************************************************************************/
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/* Micro Python bindings : adc object */
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STATIC void adc_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
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pyb_obj_adc_t *self = self_in;
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print(env, "<ADC, channel=%u>", self->num);
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}
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/// \classmethod \constructor(channel)
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/// Create an ADC object associated with the given channel.
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/// This allows you to then read analog values on that pin.
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STATIC mp_obj_t adc_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
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// check number of arguments
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mp_arg_check_num(n_args, n_kw, 1, 1, false);
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// the first argument is the channel number
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uint num = mp_obj_get_int(args[0]);
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const pin_obj_t *pin;
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uint channel;
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switch (num) {
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case 0:
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channel = ADC_CH_0;
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pin = &pin_GPIO2;
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break;
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case 1:
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channel = ADC_CH_1;
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pin = &pin_GPIO3;
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break;
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case 2:
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channel = ADC_CH_2;
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pin = &pin_GPIO4;
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break;
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case 3:
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channel = ADC_CH_3;
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pin = &pin_GPIO5;
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break;
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default:
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nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
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break;
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}
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// disable the callback before re-configuring
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pyb_obj_adc_t *self = m_new_obj(pyb_obj_adc_t);
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self->base.type = &pyb_adc_type;
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self->channel = channel;
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self->num = num;
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// configure the pin in analog mode
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pin_config (pin, 0, 0, PIN_TYPE_ANALOG, PIN_STRENGTH_2MA);
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// enable the ADC channel
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MAP_ADCChannelEnable(ADC_BASE, channel);
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// enable and configure the timer
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MAP_ADCTimerConfig(ADC_BASE, (1 << 17) - 1);
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MAP_ADCTimerEnable(ADC_BASE);
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// enable the ADC peripheral
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MAP_ADCEnable(ADC_BASE);
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return self;
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}
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/// \method read()
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/// Read the value on the analog pin and return it. The returned value
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/// will be between 0 and 4095.
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STATIC mp_obj_t adc_read(mp_obj_t self_in) {
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pyb_obj_adc_t *self = self_in;
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uint32_t sample;
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// wait until a new value is available
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while (!MAP_ADCFIFOLvlGet(ADC_BASE, self->channel));
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// read the sample
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sample = MAP_ADCFIFORead(ADC_BASE, self->channel);
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// the 12 bit sampled value is stored in bits [13:2]
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return MP_OBJ_NEW_SMALL_INT((sample & 0x3FFF) >> 2);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(adc_read_obj, adc_read);
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/// \method enable()
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/// Enable the adc channel
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STATIC mp_obj_t adc_enable(mp_obj_t self_in) {
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pyb_obj_adc_t *self = self_in;
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MAP_ADCChannelEnable(ADC_BASE, self->channel);
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(adc_enable_obj, adc_enable);
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/// \method disable()
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/// Disable the adc channel
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STATIC mp_obj_t adc_disable(mp_obj_t self_in) {
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pyb_obj_adc_t *self = self_in;
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MAP_ADCChannelDisable(ADC_BASE, self->channel);
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(adc_disable_obj, adc_disable);
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STATIC const mp_map_elem_t adc_locals_dict_table[] = {
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{ MP_OBJ_NEW_QSTR(MP_QSTR___del__), (mp_obj_t)&adc_disable_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_read), (mp_obj_t)&adc_read_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_enable), (mp_obj_t)&adc_enable_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_disable), (mp_obj_t)&adc_disable_obj },
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};
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STATIC MP_DEFINE_CONST_DICT(adc_locals_dict, adc_locals_dict_table);
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const mp_obj_type_t pyb_adc_type = {
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{ &mp_type_type },
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.name = MP_QSTR_ADC,
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.print = adc_print,
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.make_new = adc_make_new,
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.locals_dict = (mp_obj_t)&adc_locals_dict,
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};
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@ -0,0 +1,33 @@
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/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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* Copyright (c) 2015 Daniel Campora
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef PYBADC_H_
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#define PYBADC_H_
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extern const mp_obj_type_t pyb_adc_type;
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#endif /* PYBADC_H_ */
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@ -29,7 +29,6 @@
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#include <stdint.h>
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#include <string.h>
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#include "py/mpstate.h"
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#include "mpconfig.h"
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#include MICROPY_HAL_H
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#include "nlr.h"
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@ -115,31 +114,33 @@ const pin_obj_t *pin_find(mp_obj_t user_obj) {
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}
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void pin_config(const pin_obj_t *self, uint af, uint mode, uint type, uint strength) {
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// PIN_MODE_0 means it stays as a Pin, else, another peripheral will take control of it
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if (af == PIN_MODE_0) {
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// enable the peripheral clock for the GPIO port of this pin
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switch (self->port) {
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case PORT_A0:
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MAP_PRCMPeripheralClkEnable(PRCM_GPIOA0, PRCM_RUN_MODE_CLK | PRCM_SLP_MODE_CLK);
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break;
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case PORT_A1:
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MAP_PRCMPeripheralClkEnable(PRCM_GPIOA1, PRCM_RUN_MODE_CLK | PRCM_SLP_MODE_CLK);
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break;
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case PORT_A2:
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MAP_PRCMPeripheralClkEnable(PRCM_GPIOA2, PRCM_RUN_MODE_CLK | PRCM_SLP_MODE_CLK);
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break;
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case PORT_A3:
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MAP_PRCMPeripheralClkEnable(PRCM_GPIOA3, PRCM_RUN_MODE_CLK | PRCM_SLP_MODE_CLK);
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break;
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default:
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break;
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// Skip all this if the pin is to be used in analog mode
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if (type != PIN_TYPE_ANALOG) {
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// PIN_MODE_0 means it stays as a Pin, else, another peripheral will take control of it
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if (af == PIN_MODE_0) {
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// enable the peripheral clock for the GPIO port of this pin
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switch (self->port) {
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case PORT_A0:
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MAP_PRCMPeripheralClkEnable(PRCM_GPIOA0, PRCM_RUN_MODE_CLK | PRCM_SLP_MODE_CLK);
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break;
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case PORT_A1:
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MAP_PRCMPeripheralClkEnable(PRCM_GPIOA1, PRCM_RUN_MODE_CLK | PRCM_SLP_MODE_CLK);
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break;
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case PORT_A2:
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MAP_PRCMPeripheralClkEnable(PRCM_GPIOA2, PRCM_RUN_MODE_CLK | PRCM_SLP_MODE_CLK);
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break;
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case PORT_A3:
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MAP_PRCMPeripheralClkEnable(PRCM_GPIOA3, PRCM_RUN_MODE_CLK | PRCM_SLP_MODE_CLK);
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break;
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default:
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break;
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}
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// configure the direction
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MAP_GPIODirModeSet(self->port, self->bit, mode);
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}
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// configure the direction
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MAP_GPIODirModeSet(self->port, self->bit, mode);
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// now set the alternate function, strenght and type
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MAP_PinModeSet (self->pin_num, af);
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}
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// now set the alternate function, strenght and type
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MAP_PinModeSet (self->pin_num, af);
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MAP_PinConfigSet(self->pin_num, strength, type);
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}
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@ -433,7 +434,7 @@ STATIC const mp_map_elem_t pin_locals_dict_table[] = {
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{ MP_OBJ_NEW_QSTR(MP_QSTR_OD), MP_OBJ_NEW_SMALL_INT(PIN_TYPE_OD) },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_OD_PU), MP_OBJ_NEW_SMALL_INT(PIN_TYPE_OD_PU) },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_OD_PD), MP_OBJ_NEW_SMALL_INT(PIN_TYPE_OD_PD) },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_S2MA), MP_OBJ_NEW_SMALL_INT(PIN_STRENGTH_2MA) },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_S4MA), MP_OBJ_NEW_SMALL_INT(PIN_STRENGTH_4MA) },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_S6MA), MP_OBJ_NEW_SMALL_INT(PIN_STRENGTH_6MA) },
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@ -156,6 +156,12 @@ Q(mem_write)
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Q(MASTER)
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Q(SLAVE)
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// for ADC class
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Q(ADC)
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Q(read)
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Q(enable)
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Q(disable)
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// for RTC class
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Q(RTC)
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Q(datetime)
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