cc3200: Add ADC module.
This commit is contained in:
parent
5d2344d009
commit
868fa82ea4
|
@ -89,6 +89,7 @@ APP_MODS_SRC_C = $(addprefix mods/,\
|
|||
modusocket.c \
|
||||
modutime.c \
|
||||
modwlan.c \
|
||||
pybadc.c \
|
||||
pybextint.c \
|
||||
pybi2c.c \
|
||||
pybpin.c \
|
||||
|
|
|
@ -62,6 +62,7 @@
|
|||
#include "mpexception.h"
|
||||
#include "random.h"
|
||||
#include "pybextint.h"
|
||||
#include "pybadc.h"
|
||||
#include "pybi2c.h"
|
||||
#include "utils.h"
|
||||
|
||||
|
@ -313,6 +314,7 @@ STATIC const mp_map_elem_t pyb_module_globals_table[] = {
|
|||
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_Pin), (mp_obj_t)&pin_type },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_ExtInt), (mp_obj_t)&extint_type },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_ADC), (mp_obj_t)&pyb_adc_type },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_I2C), (mp_obj_t)&pyb_i2c_type },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_UART), (mp_obj_t)&pyb_uart_type },
|
||||
};
|
||||
|
|
|
@ -0,0 +1,183 @@
|
|||
/*
|
||||
* This file is part of the Micro Python project, http://micropython.org/
|
||||
*
|
||||
* The MIT License (MIT)
|
||||
*
|
||||
* Copyright (c) 2013, 2014 Damien P. George
|
||||
* Copyright (c) 2015 Daniel Campora
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "mpconfig.h"
|
||||
#include MICROPY_HAL_H
|
||||
#include "py/nlr.h"
|
||||
#include "py/runtime.h"
|
||||
#include "py/binary.h"
|
||||
#include "py/gc.h"
|
||||
#include "bufhelper.h"
|
||||
#include "inc/hw_types.h"
|
||||
#include "inc/hw_adc.h"
|
||||
#include "inc/hw_ints.h"
|
||||
#include "inc/hw_memmap.h"
|
||||
#include "rom_map.h"
|
||||
#include "interrupt.h"
|
||||
#include "pin.h"
|
||||
#include "prcm.h"
|
||||
#include "adc.h"
|
||||
#include "pybadc.h"
|
||||
#include "pybpin.h"
|
||||
#include "pins.h"
|
||||
#include "mpexception.h"
|
||||
|
||||
|
||||
/// \moduleref pyb
|
||||
/// \class ADC - analog to digital conversion: read analog values on a pin
|
||||
///
|
||||
/// Usage:
|
||||
///
|
||||
/// adc = pyb.ADC(channel) # create an adc object on the given channel (0 to 3)
|
||||
/// adc.read() # read channel value
|
||||
///
|
||||
/// The sample rate is fixed to 62.5KHz and the resolution to 12 bits.
|
||||
|
||||
typedef struct _pyb_obj_adc_t {
|
||||
mp_obj_base_t base;
|
||||
byte channel;
|
||||
byte num;
|
||||
} pyb_obj_adc_t;
|
||||
|
||||
|
||||
/******************************************************************************/
|
||||
/* 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;
|
||||
print(env, "<ADC, channel=%u>", self->num);
|
||||
}
|
||||
|
||||
/// \classmethod \constructor(channel)
|
||||
/// Create an ADC object associated with the given channel.
|
||||
/// This allows you to then read analog values on that pin.
|
||||
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) {
|
||||
// check number of arguments
|
||||
mp_arg_check_num(n_args, n_kw, 1, 1, false);
|
||||
|
||||
// the first argument is the channel number
|
||||
uint num = mp_obj_get_int(args[0]);
|
||||
const pin_obj_t *pin;
|
||||
uint channel;
|
||||
switch (num) {
|
||||
case 0:
|
||||
channel = ADC_CH_0;
|
||||
pin = &pin_GPIO2;
|
||||
break;
|
||||
case 1:
|
||||
channel = ADC_CH_1;
|
||||
pin = &pin_GPIO3;
|
||||
break;
|
||||
case 2:
|
||||
channel = ADC_CH_2;
|
||||
pin = &pin_GPIO4;
|
||||
break;
|
||||
case 3:
|
||||
channel = ADC_CH_3;
|
||||
pin = &pin_GPIO5;
|
||||
break;
|
||||
default:
|
||||
nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
|
||||
break;
|
||||
}
|
||||
|
||||
// disable the callback before re-configuring
|
||||
pyb_obj_adc_t *self = m_new_obj(pyb_obj_adc_t);
|
||||
self->base.type = &pyb_adc_type;
|
||||
self->channel = channel;
|
||||
self->num = num;
|
||||
|
||||
// configure the pin in analog mode
|
||||
pin_config (pin, 0, 0, PIN_TYPE_ANALOG, PIN_STRENGTH_2MA);
|
||||
|
||||
// enable the ADC channel
|
||||
MAP_ADCChannelEnable(ADC_BASE, channel);
|
||||
// enable and configure the timer
|
||||
MAP_ADCTimerConfig(ADC_BASE, (1 << 17) - 1);
|
||||
MAP_ADCTimerEnable(ADC_BASE);
|
||||
// enable the ADC peripheral
|
||||
MAP_ADCEnable(ADC_BASE);
|
||||
|
||||
return self;
|
||||
}
|
||||
|
||||
/// \method read()
|
||||
/// 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;
|
||||
uint32_t sample;
|
||||
|
||||
// wait until a new value is available
|
||||
while (!MAP_ADCFIFOLvlGet(ADC_BASE, self->channel));
|
||||
// read the sample
|
||||
sample = MAP_ADCFIFORead(ADC_BASE, self->channel);
|
||||
// the 12 bit sampled value is stored in bits [13:2]
|
||||
return MP_OBJ_NEW_SMALL_INT((sample & 0x3FFF) >> 2);
|
||||
}
|
||||
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;
|
||||
|
||||
MAP_ADCChannelEnable(ADC_BASE, self->channel);
|
||||
return mp_const_none;
|
||||
}
|
||||
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;
|
||||
|
||||
MAP_ADCChannelDisable(ADC_BASE, self->channel);
|
||||
return mp_const_none;
|
||||
}
|
||||
STATIC MP_DEFINE_CONST_FUN_OBJ_1(adc_disable_obj, adc_disable);
|
||||
|
||||
STATIC const mp_map_elem_t adc_locals_dict_table[] = {
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR___del__), (mp_obj_t)&adc_disable_obj },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_read), (mp_obj_t)&adc_read_obj },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_enable), (mp_obj_t)&adc_enable_obj },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_disable), (mp_obj_t)&adc_disable_obj },
|
||||
};
|
||||
|
||||
STATIC MP_DEFINE_CONST_DICT(adc_locals_dict, adc_locals_dict_table);
|
||||
|
||||
const mp_obj_type_t pyb_adc_type = {
|
||||
{ &mp_type_type },
|
||||
.name = MP_QSTR_ADC,
|
||||
.print = adc_print,
|
||||
.make_new = adc_make_new,
|
||||
.locals_dict = (mp_obj_t)&adc_locals_dict,
|
||||
};
|
||||
|
|
@ -0,0 +1,33 @@
|
|||
/*
|
||||
* This file is part of the Micro Python project, http://micropython.org/
|
||||
*
|
||||
* The MIT License (MIT)
|
||||
*
|
||||
* Copyright (c) 2013, 2014 Damien P. George
|
||||
* Copyright (c) 2015 Daniel Campora
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
|
||||
#ifndef PYBADC_H_
|
||||
#define PYBADC_H_
|
||||
|
||||
extern const mp_obj_type_t pyb_adc_type;
|
||||
|
||||
#endif /* PYBADC_H_ */
|
|
@ -29,7 +29,6 @@
|
|||
#include <stdint.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "py/mpstate.h"
|
||||
#include "mpconfig.h"
|
||||
#include MICROPY_HAL_H
|
||||
#include "nlr.h"
|
||||
|
@ -115,6 +114,8 @@ const pin_obj_t *pin_find(mp_obj_t user_obj) {
|
|||
}
|
||||
|
||||
void pin_config(const pin_obj_t *self, uint af, uint mode, uint type, uint strength) {
|
||||
// Skip all this if the pin is to be used in analog mode
|
||||
if (type != PIN_TYPE_ANALOG) {
|
||||
// PIN_MODE_0 means it stays as a Pin, else, another peripheral will take control of it
|
||||
if (af == PIN_MODE_0) {
|
||||
// enable the peripheral clock for the GPIO port of this pin
|
||||
|
@ -137,9 +138,9 @@ void pin_config(const pin_obj_t *self, uint af, uint mode, uint type, uint stren
|
|||
// configure the direction
|
||||
MAP_GPIODirModeSet(self->port, self->bit, mode);
|
||||
}
|
||||
|
||||
// now set the alternate function, strenght and type
|
||||
MAP_PinModeSet (self->pin_num, af);
|
||||
}
|
||||
MAP_PinConfigSet(self->pin_num, strength, type);
|
||||
}
|
||||
|
||||
|
|
|
@ -156,6 +156,12 @@ Q(mem_write)
|
|||
Q(MASTER)
|
||||
Q(SLAVE)
|
||||
|
||||
// for ADC class
|
||||
Q(ADC)
|
||||
Q(read)
|
||||
Q(enable)
|
||||
Q(disable)
|
||||
|
||||
// for RTC class
|
||||
Q(RTC)
|
||||
Q(datetime)
|
||||
|
|
Loading…
Reference in New Issue