micropython - Port of MicroPython to the mbed platform. See mi…

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Port of MicroPython to the mbed platform. See micropython-repl for an interactive program.

This a port of MicroPython to the mbed Classic platform.

This provides an interpreter running on the board's USB serial connection.

Getting Started

Import the micropython-repl program into your IDE workspace on developer.mbed.org. Compile and download to your board. Connect to the USB serial port in your usual manner. You should get a startup message similar to the following:

  MicroPython v1.7-155-gdddcdd8 on 2016-04-23; K64F with ARM
  Type "help()" for more information.
  >>>

Then you can start using micropython. For example:

  >>> from mbed import DigitalOut
  >>> from pins import LED1
  >>> led = DigitalOut(LED1)
  >>> led.write(1)

Requirements

You need approximately 100K of flash memory, so this will be no good for boards with smaller amounts of storage.

Caveats

This can be considered an alpha release of the port; things may not work; APIs may change in later releases. It is NOT an official part part the micropython project, so if anything doesn't work, blame me. If it does work, most of the credit is due to micropython.

Only a few of the mbed classes are available in micropython so far, and not all methods of those that are.

Only a few boards have their full range of pin names available; for others, only a few standard ones (USBTX, USBRX, LED1) are implemented.

The garbage collector is not yet implemented. The interpreter will gradually consume memory and then fail.

Exceptions from the mbed classes are not yet handled.

Asynchronous processing (e.g. events on inputs) is not supported.

Credits

Damien P. George and other contributors who created micropython.

Colin Hogben, author of this port.

py/modcmath.c

Committer:: Colin Hogben
Date:: 2016-04-27
Revision:: 10:33521d742af1
Parent:: 0:5868e8752d44

File content as of revision 10:33521d742af1:

/*
 * This file is part of the Micro Python project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2013, 2014 Damien P. George
 *
 * 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 "py/builtin.h"

#if MICROPY_PY_BUILTINS_FLOAT && MICROPY_PY_BUILTINS_COMPLEX && MICROPY_PY_CMATH

#include <math.h>

/// \module cmath - mathematical functions for complex numbers
///
/// The `cmath` module provides some basic mathematical funtions for
/// working with complex numbers.

/// \function phase(z)
/// Returns the phase of the number `z`, in the range (-pi, +pi].
STATIC mp_obj_t mp_cmath_phase(mp_obj_t z_obj) {
    mp_float_t real, imag;
    mp_obj_get_complex(z_obj, &real, &imag);
    return mp_obj_new_float(MICROPY_FLOAT_C_FUN(atan2)(imag, real));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_cmath_phase_obj, mp_cmath_phase);

/// \function polar(z)
/// Returns, as a tuple, the polar form of `z`.
STATIC mp_obj_t mp_cmath_polar(mp_obj_t z_obj) {
    mp_float_t real, imag;
    mp_obj_get_complex(z_obj, &real, &imag);
    mp_obj_t tuple[2] = {
        mp_obj_new_float(MICROPY_FLOAT_C_FUN(sqrt)(real*real + imag*imag)),
        mp_obj_new_float(MICROPY_FLOAT_C_FUN(atan2)(imag, real)),
    };
    return mp_obj_new_tuple(2, tuple);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_cmath_polar_obj, mp_cmath_polar);

/// \function rect(r, phi)
/// Returns the complex number with modulus `r` and phase `phi`.
STATIC mp_obj_t mp_cmath_rect(mp_obj_t r_obj, mp_obj_t phi_obj) {
    mp_float_t r = mp_obj_get_float(r_obj);
    mp_float_t phi = mp_obj_get_float(phi_obj);
    return mp_obj_new_complex(r * MICROPY_FLOAT_C_FUN(cos)(phi), r * MICROPY_FLOAT_C_FUN(sin)(phi));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(mp_cmath_rect_obj, mp_cmath_rect);

/// \function exp(z)
/// Return the exponential of `z`.
STATIC mp_obj_t mp_cmath_exp(mp_obj_t z_obj) {
    mp_float_t real, imag;
    mp_obj_get_complex(z_obj, &real, &imag);
    mp_float_t exp_real = MICROPY_FLOAT_C_FUN(exp)(real);
    return mp_obj_new_complex(exp_real * MICROPY_FLOAT_C_FUN(cos)(imag), exp_real * MICROPY_FLOAT_C_FUN(sin)(imag));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_cmath_exp_obj, mp_cmath_exp);

/// \function log(z)
/// Return the natural logarithm of `z`.  The branch cut is along the negative real axis.
// TODO can take second argument, being the base
STATIC mp_obj_t mp_cmath_log(mp_obj_t z_obj) {
    mp_float_t real, imag;
    mp_obj_get_complex(z_obj, &real, &imag);
    return mp_obj_new_complex(0.5 * MICROPY_FLOAT_C_FUN(log)(real*real + imag*imag), MICROPY_FLOAT_C_FUN(atan2)(imag, real));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_cmath_log_obj, mp_cmath_log);

#if MICROPY_PY_MATH_SPECIAL_FUNCTIONS
/// \function log10(z)
/// Return the base-10 logarithm of `z`.  The branch cut is along the negative real axis.
STATIC mp_obj_t mp_cmath_log10(mp_obj_t z_obj) {
    mp_float_t real, imag;
    mp_obj_get_complex(z_obj, &real, &imag);
    return mp_obj_new_complex(0.5 * MICROPY_FLOAT_C_FUN(log10)(real*real + imag*imag), 0.4342944819032518 * MICROPY_FLOAT_C_FUN(atan2)(imag, real));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_cmath_log10_obj, mp_cmath_log10);
#endif

/// \function sqrt(z)
/// Return the square-root of `z`.
STATIC mp_obj_t mp_cmath_sqrt(mp_obj_t z_obj) {
    mp_float_t real, imag;
    mp_obj_get_complex(z_obj, &real, &imag);
    mp_float_t sqrt_abs = MICROPY_FLOAT_C_FUN(pow)(real*real + imag*imag, 0.25);
    mp_float_t theta = 0.5 * MICROPY_FLOAT_C_FUN(atan2)(imag, real);
    return mp_obj_new_complex(sqrt_abs * MICROPY_FLOAT_C_FUN(cos)(theta), sqrt_abs * MICROPY_FLOAT_C_FUN(sin)(theta));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_cmath_sqrt_obj, mp_cmath_sqrt);

/// \function cos(z)
/// Return the cosine of `z`.
STATIC mp_obj_t mp_cmath_cos(mp_obj_t z_obj) {
    mp_float_t real, imag;
    mp_obj_get_complex(z_obj, &real, &imag);
    return mp_obj_new_complex(MICROPY_FLOAT_C_FUN(cos)(real) * MICROPY_FLOAT_C_FUN(cosh)(imag), -MICROPY_FLOAT_C_FUN(sin)(real) * MICROPY_FLOAT_C_FUN(sinh)(imag));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_cmath_cos_obj, mp_cmath_cos);

/// \function sin(z)
/// Return the sine of `z`.
STATIC mp_obj_t mp_cmath_sin(mp_obj_t z_obj) {
    mp_float_t real, imag;
    mp_obj_get_complex(z_obj, &real, &imag);
    return mp_obj_new_complex(MICROPY_FLOAT_C_FUN(sin)(real) * MICROPY_FLOAT_C_FUN(cosh)(imag), MICROPY_FLOAT_C_FUN(cos)(real) * MICROPY_FLOAT_C_FUN(sinh)(imag));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_cmath_sin_obj, mp_cmath_sin);

STATIC const mp_rom_map_elem_t mp_module_cmath_globals_table[] = {
    { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_cmath) },
    { MP_ROM_QSTR(MP_QSTR_e), mp_const_float_e },
    { MP_ROM_QSTR(MP_QSTR_pi), mp_const_float_pi },
    { MP_ROM_QSTR(MP_QSTR_phase), MP_ROM_PTR(&mp_cmath_phase_obj) },
    { MP_ROM_QSTR(MP_QSTR_polar), MP_ROM_PTR(&mp_cmath_polar_obj) },
    { MP_ROM_QSTR(MP_QSTR_rect), MP_ROM_PTR(&mp_cmath_rect_obj) },
    { MP_ROM_QSTR(MP_QSTR_exp), MP_ROM_PTR(&mp_cmath_exp_obj) },
    { MP_ROM_QSTR(MP_QSTR_log), MP_ROM_PTR(&mp_cmath_log_obj) },
    #if MICROPY_PY_MATH_SPECIAL_FUNCTIONS
    { MP_ROM_QSTR(MP_QSTR_log10), MP_ROM_PTR(&mp_cmath_log10_obj) },
    #endif
    { MP_ROM_QSTR(MP_QSTR_sqrt), MP_ROM_PTR(&mp_cmath_sqrt_obj) },
    //{ MP_ROM_QSTR(MP_QSTR_acos), MP_ROM_PTR(&mp_cmath_acos_obj) },
    //{ MP_ROM_QSTR(MP_QSTR_asin), MP_ROM_PTR(&mp_cmath_asin_obj) },
    //{ MP_ROM_QSTR(MP_QSTR_atan), MP_ROM_PTR(&mp_cmath_atan_obj) },
    { MP_ROM_QSTR(MP_QSTR_cos), MP_ROM_PTR(&mp_cmath_cos_obj) },
    { MP_ROM_QSTR(MP_QSTR_sin), MP_ROM_PTR(&mp_cmath_sin_obj) },
    //{ MP_ROM_QSTR(MP_QSTR_tan), MP_ROM_PTR(&mp_cmath_tan_obj) },
    //{ MP_ROM_QSTR(MP_QSTR_acosh), MP_ROM_PTR(&mp_cmath_acosh_obj) },
    //{ MP_ROM_QSTR(MP_QSTR_asinh), MP_ROM_PTR(&mp_cmath_asinh_obj) },
    //{ MP_ROM_QSTR(MP_QSTR_atanh), MP_ROM_PTR(&mp_cmath_atanh_obj) },
    //{ MP_ROM_QSTR(MP_QSTR_cosh), MP_ROM_PTR(&mp_cmath_cosh_obj) },
    //{ MP_ROM_QSTR(MP_QSTR_sinh), MP_ROM_PTR(&mp_cmath_sinh_obj) },
    //{ MP_ROM_QSTR(MP_QSTR_tanh), MP_ROM_PTR(&mp_cmath_tanh_obj) },
    //{ MP_ROM_QSTR(MP_QSTR_isfinite), MP_ROM_PTR(&mp_cmath_isfinite_obj) },
    //{ MP_ROM_QSTR(MP_QSTR_isinf), MP_ROM_PTR(&mp_cmath_isinf_obj) },
    //{ MP_ROM_QSTR(MP_QSTR_isnan), MP_ROM_PTR(&mp_cmath_isnan_obj) },
};

STATIC MP_DEFINE_CONST_DICT(mp_module_cmath_globals, mp_module_cmath_globals_table);

const mp_obj_module_t mp_module_cmath = {
    .base = { &mp_type_module },
    .name = MP_QSTR_cmath,
    .globals = (mp_obj_dict_t*)&mp_module_cmath_globals,
};

#endif // MICROPY_PY_BUILTINS_FLOAT && MICROPY_PY_CMATH

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Type:	Library
Created:	27 Apr 2016
Imports:	279
Forks:	0
Commits:	11
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The code in this repository is MIT licensed.