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circuitpython/esp8266/modesp.c

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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2015 Paul Sokolovsky
*
* 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 <stdbool.h>
#include "py/nlr.h"
#include "py/obj.h"
#include "py/gc.h"
#include "py/runtime.h"
#include MICROPY_HAL_H
#include "netutils.h"
#include "queue.h"
#include "user_interface.h"
#include "espconn.h"
#include "utils.h"
STATIC const mp_obj_type_t esp_socket_type;
typedef struct _esp_socket_obj_t {
mp_obj_base_t base;
struct espconn *espconn;
mp_obj_t cb_connect;
mp_obj_t cb_recv;
mp_obj_t cb_sent;
mp_obj_t cb_disconnect;
uint8_t *recvbuf;
mp_uint_t recvbuf_len;
bool fromserver;
mp_obj_list_t *connlist;
} esp_socket_obj_t;
// Due to the onconnect callback not being able to recognize the parent esp_socket,
// we can have only one esp_socket listening at a time
// This should be solvable by some PIC hacking
STATIC esp_socket_obj_t *esp_socket_listening;
STATIC mp_obj_t esp_socket_make_new_base() {
esp_socket_obj_t *s = m_new_obj_with_finaliser(esp_socket_obj_t);
s->recvbuf = NULL;
s->base.type = (mp_obj_t)&esp_socket_type;
s->cb_connect = mp_const_none;
s->cb_recv = mp_const_none;
s->cb_disconnect = mp_const_none;
s->cb_sent = mp_const_none;
s->fromserver = false;
s->connlist = NULL;
return s;
}
// constructor esp_socket(family=AF_INET, type=SOCK_STREAM, proto=IPPROTO_TCP, fileno=None)
// Arguments ignored as we do not support UDP (yet)
STATIC mp_obj_t esp_socket_make_new(mp_obj_t type_in, mp_uint_t n_args,
mp_uint_t n_kw, const mp_obj_t *args) {
mp_arg_check_num(n_args, n_kw, 0, 4, false);
esp_socket_obj_t *s = esp_socket_make_new_base();
s->espconn = m_new_obj(struct espconn);
espconn_create(s->espconn);
s->espconn->reverse = s;
// TODO: UDP Support
s->espconn->type = ESPCONN_TCP;
s->espconn->state = ESPCONN_NONE;
s->espconn->proto.tcp = m_new_obj(esp_tcp);
return s;
}
// method socket.close()
STATIC mp_obj_t esp_socket_close(mp_obj_t self_in) {
esp_socket_obj_t *s = self_in;
if (esp_socket_listening == s) {
esp_socket_listening = NULL;
}
if (s->espconn->state != ESPCONN_NONE && s->espconn->state != ESPCONN_CLOSE) {
espconn_disconnect(s->espconn);
}
if (s->connlist != NULL) {
mp_obj_list_set_len(s->connlist, 0);
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(esp_socket_close_obj, esp_socket_close);
// method socket.__del__()
STATIC mp_obj_t esp_socket___del__(mp_obj_t self_in) {
esp_socket_obj_t *s = self_in;
esp_socket_close(self_in);
if (s->fromserver) {
espconn_delete(s->espconn);
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(esp_socket___del___obj, esp_socket___del__);
// method socket.bind(address)
STATIC mp_obj_t esp_socket_bind(mp_obj_t self_in, mp_obj_t addr_in) {
esp_socket_obj_t *s = self_in;
mp_uint_t port = netutils_parse_inet_addr(addr_in,
s->espconn->proto.tcp->remote_ip, NETUTILS_BIG);
s->espconn->proto.tcp->local_port = port;
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(esp_socket_bind_obj, esp_socket_bind);
STATIC void esp_socket_recv_callback(void *arg, char *pdata, unsigned short len) {
struct espconn *conn = arg;
esp_socket_obj_t *s = conn->reverse;
if (s->cb_recv != mp_const_none) {
call_function_2_protected(s->cb_recv, s, mp_obj_new_bytes((byte *)pdata, len));
} else {
if (s->recvbuf == NULL) {
s->recvbuf = gc_alloc(len, false);
s->recvbuf_len = len;
if (s->recvbuf != NULL) {
memcpy(s->recvbuf, pdata, len);
}
} else {
s->recvbuf = gc_realloc(s->recvbuf, s->recvbuf_len + len);
if (s->recvbuf != NULL) {
memcpy(&s->recvbuf[s->recvbuf_len], pdata, len);
s->recvbuf_len += len;
}
}
if (s->recvbuf == NULL) {
esp_socket_close(s);
return;
}
}
}
STATIC void esp_socket_sent_callback(void *arg) {
struct espconn *conn = arg;
esp_socket_obj_t *s = conn->reverse;
if (s->cb_sent != mp_const_none) {
call_function_1_protected(s->cb_sent, s);
}
}
STATIC void esp_socket_disconnect_callback(void *arg) {
struct espconn *conn = arg;
esp_socket_obj_t *s = conn->reverse;
if (s->cb_disconnect != mp_const_none) {
call_function_1_protected(s->cb_disconnect, s);
}
esp_socket_close(s);
}
STATIC void esp_socket_connect_callback_server(void *arg) {
struct espconn *conn = arg;
esp_socket_obj_t *s = esp_socket_make_new_base();
s->espconn = conn;
s->fromserver = true;
conn->reverse = s;
espconn_regist_recvcb(conn, esp_socket_recv_callback);
espconn_regist_sentcb(conn, esp_socket_sent_callback);
espconn_regist_disconcb(conn, esp_socket_disconnect_callback);
espconn_regist_time(conn, 15, 0);
if (esp_socket_listening->cb_connect != mp_const_none) {
call_function_1_protected(esp_socket_listening->cb_connect, s);
} else {
mp_obj_list_append(esp_socket_listening->connlist, s);
}
}
STATIC void esp_socket_connect_callback_client(void *arg) {
struct espconn *conn = arg;
esp_socket_obj_t *s = conn->reverse;
if (s->cb_connect != mp_const_none) {
call_function_1_protected(s->cb_connect, s);
}
}
// method socket.listen(backlog)
STATIC mp_obj_t esp_socket_listen(mp_obj_t self_in, mp_obj_t backlog) {
esp_socket_obj_t *s = self_in;
if (esp_socket_listening != NULL) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError,
"only one espconn can listen at a time"));
}
esp_socket_listening = s;
s->connlist = mp_obj_new_list(0, NULL);
espconn_regist_connectcb(s->espconn, esp_socket_connect_callback_server);
espconn_accept(s->espconn);
espconn_regist_time(s->espconn, 1500, 0);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(esp_socket_listen_obj, esp_socket_listen);
// method socket.accept()
STATIC mp_obj_t esp_socket_accept(mp_obj_t self_in) {
esp_socket_obj_t *s = self_in;
if (s->connlist == NULL) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError,
"not listening"));
}
do {
mp_uint_t len;
mp_obj_t *items;
mp_obj_list_get(s->connlist, &len, &items);
if (len == 0) {
break;
}
esp_socket_obj_t *rs = items[0];
mp_obj_list_remove(s->connlist, rs);
if (rs->espconn->state != ESPCONN_CLOSE) {
return rs;
}
} while (true);
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError,
"no connection in queue"));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(esp_socket_accept_obj, esp_socket_accept);
// method socket.connect(address)
STATIC mp_obj_t esp_socket_connect(mp_obj_t self_in, mp_obj_t addr_in) {
esp_socket_obj_t *s = self_in;
if (s->espconn == NULL || s->espconn->state != ESPCONN_NONE) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError,
"transport endpoint is already connected or closed"));
}
espconn_regist_connectcb(s->espconn, esp_socket_connect_callback_client);
espconn_regist_recvcb(s->espconn, esp_socket_recv_callback);
espconn_regist_sentcb(s->espconn, esp_socket_sent_callback);
espconn_regist_disconcb(s->espconn, esp_socket_disconnect_callback);
s->espconn->proto.tcp->remote_port =
netutils_parse_inet_addr(addr_in, s->espconn->proto.tcp->remote_ip,
NETUTILS_BIG);
espconn_connect(s->espconn);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(esp_socket_connect_obj, esp_socket_connect);
// method socket.send(bytes)
STATIC mp_obj_t esp_socket_send(mp_obj_t self_in, mp_obj_t buf_in) {
esp_socket_obj_t *s = self_in;
if (s->espconn->state == ESPCONN_NONE || s->espconn->state == ESPCONN_CLOSE) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError,
"not connected"));
}
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(buf_in, &bufinfo, MP_BUFFER_READ);
espconn_sent(s->espconn, bufinfo.buf, bufinfo.len);
return mp_obj_new_int(bufinfo.len);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(esp_socket_send_obj, esp_socket_send);
// method socket.recv(bufsize)
STATIC mp_obj_t esp_socket_recv(mp_obj_t self_in, mp_obj_t len_in) {
esp_socket_obj_t *s = self_in;
if (s->recvbuf == NULL) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError,
"no data available"));
}
mp_uint_t mxl = mp_obj_get_int(len_in);
if (mxl >= s->recvbuf_len) {
mp_obj_t trt = mp_obj_new_bytes(s->recvbuf, s->recvbuf_len);
gc_free(s->recvbuf);
s->recvbuf = NULL;
return trt;
} else {
mp_obj_t trt = mp_obj_new_bytes(s->recvbuf, mxl);
memmove(s->recvbuf, &s->recvbuf[mxl], s->recvbuf_len - mxl);
s->recvbuf_len -= mxl;
s->recvbuf = gc_realloc(s->recvbuf, s->recvbuf_len);
return trt;
}
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(esp_socket_recv_obj, esp_socket_recv);
// method socket.sendto(bytes, address)
STATIC mp_obj_t esp_socket_sendto(mp_obj_t self_in, mp_obj_t data_in, mp_obj_t addr_in) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, "UDP not supported"));
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_3(esp_socket_sendto_obj, esp_socket_sendto);
// method socket.recvfrom(bufsize)
STATIC mp_obj_t esp_socket_recvfrom(mp_obj_t self_in, mp_obj_t len_in) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, "UDP not supported"));
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(esp_socket_recvfrom_obj, esp_socket_recvfrom);
STATIC mp_obj_t esp_socket_onconnect(mp_obj_t self_in, mp_obj_t lambda_in) {
esp_socket_obj_t *s = self_in;
s->cb_connect = lambda_in;
if (s->connlist != NULL) {
do {
mp_uint_t len;
mp_obj_t *items;
mp_obj_list_get(s->connlist, &len, &items);
if (len == 0) {
break;
}
esp_socket_obj_t *rs = items[0];
mp_obj_list_remove(s->connlist, rs);
if (s->espconn->state != ESPCONN_CLOSE) {
call_function_1_protected(s->cb_connect, rs);
}
} while (true);
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(esp_socket_onconnect_obj, esp_socket_onconnect);
STATIC mp_obj_t esp_socket_onrecv(mp_obj_t self_in, mp_obj_t lambda_in) {
esp_socket_obj_t *s = self_in;
s->cb_recv = lambda_in;
if (s->recvbuf != NULL) {
call_function_2_protected(s->cb_recv, s,
mp_obj_new_bytes((byte *)s->recvbuf, s->recvbuf_len));
s->recvbuf = NULL;
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(esp_socket_onrecv_obj, esp_socket_onrecv);
STATIC mp_obj_t esp_socket_onsent(mp_obj_t self_in, mp_obj_t lambda_in) {
esp_socket_obj_t *s = self_in;
s->cb_sent = lambda_in;
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(esp_socket_onsent_obj, esp_socket_onsent);
STATIC mp_obj_t esp_socket_ondisconnect(mp_obj_t self_in, mp_obj_t lambda_in) {
esp_socket_obj_t *s = self_in;
s->cb_disconnect = lambda_in;
if (s->espconn->state == ESPCONN_CLOSE) {
call_function_1_protected(s->cb_disconnect, s);
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(esp_socket_ondisconnect_obj, esp_socket_ondisconnect);
typedef struct _esp_getaddrinfo_cb_struct_t {
mp_obj_t lambda;
mp_uint_t port;
} esp_getaddrinfo_cb_struct_t;
STATIC esp_getaddrinfo_cb_struct_t esp_getaddrinfo_cb_struct;
STATIC void esp_getaddrinfo_cb(const char *name, ip_addr_t *ipaddr, void *arg) {
mp_obj_t namestr = mp_obj_new_str(name, strlen(name), true);
if (ipaddr != NULL) {
uint8_t ip[4];
ip[0] = (ipaddr->addr >> 24) & 0xff;
ip[1] = (ipaddr->addr >> 16) & 0xff;
ip[2] = (ipaddr->addr >> 8) & 0xff;
ip[3] = (ipaddr->addr >> 0) & 0xff;
mp_obj_tuple_t *tuple = mp_obj_new_tuple(5, NULL);
tuple->items[0] = MP_OBJ_NEW_SMALL_INT(0);
tuple->items[1] = MP_OBJ_NEW_SMALL_INT(0);
tuple->items[2] = MP_OBJ_NEW_SMALL_INT(0);
tuple->items[3] = MP_OBJ_NEW_QSTR(MP_QSTR_);
tuple->items[4] = netutils_format_inet_addr(ip,
esp_getaddrinfo_cb_struct.port, NETUTILS_LITTLE);
call_function_2_protected(esp_getaddrinfo_cb_struct.lambda, namestr, tuple);
} else {
call_function_2_protected(esp_getaddrinfo_cb_struct.lambda, namestr, mp_const_none);
}
}
STATIC mp_obj_t esp_getaddrinfo(mp_obj_t host_in, mp_obj_t port_in,
mp_obj_t lambda_in) {
mp_uint_t hlen;
const char *host = mp_obj_str_get_data(host_in, &hlen);
ip_addr_t ipaddr;
esp_getaddrinfo_cb_struct.lambda = lambda_in;
esp_getaddrinfo_cb_struct.port = mp_obj_get_int(port_in);
err_t ret = espconn_gethostbyname(NULL, host, &ipaddr,
esp_getaddrinfo_cb);
if (ret == ESPCONN_OK) {
esp_getaddrinfo_cb(host, &ipaddr, NULL);
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_3(esp_getaddrinfo_obj, esp_getaddrinfo);
STATIC const mp_map_elem_t esp_socket_locals_dict_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR___del__), (mp_obj_t)&esp_socket___del___obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_close), (mp_obj_t)&esp_socket_close_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_bind), (mp_obj_t)&esp_socket_bind_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_listen), (mp_obj_t)&esp_socket_listen_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_accept), (mp_obj_t)&esp_socket_accept_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_connect), (mp_obj_t)&esp_socket_connect_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_send), (mp_obj_t)&esp_socket_send_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_recv), (mp_obj_t)&esp_socket_recv_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_sendto), (mp_obj_t)&esp_socket_sendto_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_recvfrom), (mp_obj_t)&esp_socket_recvfrom_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_onconnect), (mp_obj_t)&esp_socket_onconnect_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_onrecv), (mp_obj_t)&esp_socket_onrecv_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_onsent), (mp_obj_t)&esp_socket_onsent_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_ondisconnect), (mp_obj_t)&esp_socket_ondisconnect_obj },
};
STATIC MP_DEFINE_CONST_DICT(esp_socket_locals_dict, esp_socket_locals_dict_table);
STATIC const mp_obj_type_t esp_socket_type = {
{ &mp_type_type },
.name = MP_QSTR_socket,
.make_new = esp_socket_make_new,
.locals_dict = (mp_obj_t)&esp_socket_locals_dict,
};
#define MODESP_INCLUDE_CONSTANTS (1)
static void error_check(bool status, const char *msg) {
if (!status) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, msg));
}
}
STATIC void esp_scan_cb(scaninfo *si, STATUS status) {
//printf("in pyb_scan_cb: %d, si=%p, si->pbss=%p\n", status, si, si->pbss);
struct bss_info *bs;
if (si->pbss) {
STAILQ_FOREACH(bs, si->pbss, next) {
mp_obj_tuple_t *t = mp_obj_new_tuple(6, NULL);
t->items[0] = mp_obj_new_bytes(bs->ssid, strlen((char*)bs->ssid));
t->items[1] = mp_obj_new_bytes(bs->bssid, sizeof(bs->bssid));
t->items[2] = MP_OBJ_NEW_SMALL_INT(bs->channel);
t->items[3] = MP_OBJ_NEW_SMALL_INT(bs->rssi);
t->items[4] = MP_OBJ_NEW_SMALL_INT(bs->authmode);
t->items[5] = MP_OBJ_NEW_SMALL_INT(bs->is_hidden);
call_function_1_protected(MP_STATE_PORT(scan_cb_obj), t);
}
}
}
STATIC mp_obj_t esp_scan(mp_obj_t cb_in) {
MP_STATE_PORT(scan_cb_obj) = cb_in;
wifi_set_opmode(STATION_MODE);
wifi_station_scan(NULL, (scan_done_cb_t)esp_scan_cb);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(esp_scan_obj, esp_scan);
STATIC mp_obj_t esp_connect(mp_obj_t ssid_in, mp_obj_t passwd_in) {
struct station_config config = {{0}};
mp_uint_t len;
const char *p;
p = mp_obj_str_get_data(ssid_in, &len);
memcpy(config.ssid, p, len);
p = mp_obj_str_get_data(passwd_in, &len);
memcpy(config.password, p, len);
error_check(wifi_station_set_config(&config), "Cannot set STA config");
error_check(wifi_station_connect(), "Cannot connect to AP");
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(esp_connect_obj, esp_connect);
STATIC mp_obj_t esp_disconnect() {
error_check(wifi_station_disconnect(), "Cannot disconnect from AP");
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_0(esp_disconnect_obj, esp_disconnect);
STATIC mp_obj_t esp_status() {
return MP_OBJ_NEW_SMALL_INT(wifi_station_get_connect_status());
}
STATIC MP_DEFINE_CONST_FUN_OBJ_0(esp_status_obj, esp_status);
STATIC const mp_map_elem_t esp_module_globals_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_esp) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_connect), (mp_obj_t)&esp_connect_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_disconnect), (mp_obj_t)&esp_disconnect_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_scan), (mp_obj_t)&esp_scan_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_status), (mp_obj_t)&esp_status_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_getaddrinfo), (mp_obj_t)&esp_getaddrinfo_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_socket), (mp_obj_t)&esp_socket_type },
#if MODESP_INCLUDE_CONSTANTS
{ MP_OBJ_NEW_QSTR(MP_QSTR_STAT_IDLE),
MP_OBJ_NEW_SMALL_INT(STATION_IDLE)},
{ MP_OBJ_NEW_QSTR(MP_QSTR_STAT_CONNECTING),
MP_OBJ_NEW_SMALL_INT(STATION_CONNECTING)},
{ MP_OBJ_NEW_QSTR(MP_QSTR_STAT_WRONG_PASSWORD),
MP_OBJ_NEW_SMALL_INT(STATION_WRONG_PASSWORD)},
{ MP_OBJ_NEW_QSTR(MP_QSTR_STAT_NO_AP_FOUND),
MP_OBJ_NEW_SMALL_INT(STATION_NO_AP_FOUND)},
{ MP_OBJ_NEW_QSTR(MP_QSTR_STAT_CONNECT_FAIL),
MP_OBJ_NEW_SMALL_INT(STATION_CONNECT_FAIL)},
{ MP_OBJ_NEW_QSTR(MP_QSTR_STAT_GOT_IP),
MP_OBJ_NEW_SMALL_INT(STATION_GOT_IP)},
#endif
};
STATIC MP_DEFINE_CONST_DICT(esp_module_globals, esp_module_globals_table);
const mp_obj_module_t esp_module = {
.base = { &mp_type_module },
.name = MP_QSTR_esp,
.globals = (mp_obj_dict_t*)&esp_module_globals,
};
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