circuitpython/shared-bindings/multiterminal/__init__.c
Scott Shawcroft 6ace744667 esp8266: Introduce multiterminal module for managing a secondary
serial connection such as WebREPL.

Fixes #181.
2017-08-07 14:30:11 -07:00

116 lines
5.0 KiB
C

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
*
* 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/obj.h"
#include "py/mphal.h"
#include "py/runtime.h"
#include "shared-bindings/multiterminal/__init__.h"
//| :mod:`multiterminal` --- Manage additional terminal sources
//| ===========================================================
//|
//| .. module:: multiterminal
//| :synopsis: Manage additional terminal sources
//| :platform: ESP8266
//|
//| The `multiterminal` module allows you to configure an additional serial
//| terminal source. Incoming characters are accepted from both the internal
//| serial connection and the optional secondary connection.
//|
//| .. function:: get_secondary_terminal()
//|
//| Returns the current secondary terminal.
//|
STATIC mp_obj_t multiterminal_obj_get_secondary_terminal() {
return common_hal_multiterminal_get_secondary_terminal();
}
MP_DEFINE_CONST_FUN_OBJ_0(multiterminal_get_secondary_terminal_obj, multiterminal_obj_get_secondary_terminal);
//| .. function:: set_secondary_terminal(stream)
//|
//| Read additional input from the given stream and write out back to it.
//| This doesn't replace the core stream (usually UART or native USB) but is
//| mixed in instead.
//|
//| :param stream stream: secondary stream
//|
STATIC mp_obj_t multiterminal_obj_set_secondary_terminal(mp_obj_t secondary_terminal) {
mp_obj_t write_m[3];
mp_load_method_maybe(secondary_terminal, MP_QSTR_write, write_m);
mp_obj_t readinto_m[3];
mp_load_method_maybe(secondary_terminal, MP_QSTR_readinto, readinto_m);
if (write_m[0] == MP_OBJ_NULL || readinto_m[0] == MP_OBJ_NULL) {
mp_raise_ValueError("Stream missing readinto() or write() method.");
return mp_const_none;
}
common_hal_multiterminal_set_secondary_terminal(secondary_terminal);
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_1(multiterminal_set_secondary_terminal_obj, multiterminal_obj_set_secondary_terminal);
//| .. function:: clear_secondary_terminal()
//|
//| Clears the secondary terminal.
//|
STATIC mp_obj_t multiterminal_obj_clear_secondary_terminal() {
common_hal_multiterminal_clear_secondary_terminal();
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_0(multiterminal_clear_secondary_terminal_obj, multiterminal_obj_clear_secondary_terminal);
//| .. function:: schedule_secondary_terminal_read(socket)
//|
//| In cases where the underlying OS is doing task scheduling, this notifies
//| the OS when more data is available on the socket to read. This is useful
//| as a callback for lwip sockets.
//|
// TODO(tannewt): This is a funny API. Replace it with a direct call into the OS
// by the lwip object.
STATIC mp_obj_t multiterminal_obj_schedule_secondary_terminal_read(mp_obj_t socket) {
common_hal_multiterminal_schedule_secondary_terminal_read(socket);
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_1(multiterminal_schedule_secondary_terminal_read_obj, multiterminal_obj_schedule_secondary_terminal_read);
// TODO(tannewt): Expose the internal serial connection as `primary_terminal`
STATIC const mp_rom_map_elem_t multiterminal_module_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_multiterminal) },
{ MP_ROM_QSTR(MP_QSTR_get_secondary_terminal), MP_ROM_PTR(&multiterminal_get_secondary_terminal_obj) },
{ MP_ROM_QSTR(MP_QSTR_set_secondary_terminal), MP_ROM_PTR(&multiterminal_set_secondary_terminal_obj) },
{ MP_ROM_QSTR(MP_QSTR_clear_secondary_terminal), MP_ROM_PTR(&multiterminal_clear_secondary_terminal_obj) },
{ MP_ROM_QSTR(MP_QSTR_schedule_secondary_terminal_read), MP_ROM_PTR(&multiterminal_schedule_secondary_terminal_read_obj) },
};
STATIC MP_DEFINE_CONST_DICT(multiterminal_module_globals, multiterminal_module_globals_table);
const mp_obj_module_t multiterminal_module = {
.base = { &mp_type_module },
.globals = (mp_obj_dict_t*)&multiterminal_module_globals,
};