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mbed-os/connectivity/drivers/cellular/QUECTEL/M26/QUECTEL_M26_CellularStack.cpp

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/*
* Copyright (c) 2018, Arm Limited and affiliates.
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "rtos/Kernel.h"
#include "QUECTEL/M26/QUECTEL_M26_CellularStack.h"
#include "CellularLog.h"
using namespace std::chrono;
#define SOCKET_SEND_READY_TIMEOUT 30s
#define SOCKET_READ_TIMEOUT 1s
using namespace mbed;
QUECTEL_M26_CellularStack::QUECTEL_M26_CellularStack(ATHandler &atHandler, int cid, nsapi_ip_stack_t stack_type, AT_CellularDevice &device) :
AT_CellularStack(atHandler, cid, stack_type, device)
{
_at.set_urc_handler("+QIRDI:", Callback<void()>(this, &QUECTEL_M26_CellularStack::urc_qiurc));
_at.set_urc_handler("0, CLOSED", Callback<void()>(this, &QUECTEL_M26_CellularStack::socket_closed_0));
_at.set_urc_handler("1, CLOSED", Callback<void()>(this, &QUECTEL_M26_CellularStack::socket_closed_1));
_at.set_urc_handler("2, CLOSED", Callback<void()>(this, &QUECTEL_M26_CellularStack::socket_closed_2));
_at.set_urc_handler("3, CLOSED", Callback<void()>(this, &QUECTEL_M26_CellularStack::socket_closed_3));
_at.set_urc_handler("4, CLOSED", Callback<void()>(this, &QUECTEL_M26_CellularStack::socket_closed_4));
_at.set_urc_handler("5, CLOSED", Callback<void()>(this, &QUECTEL_M26_CellularStack::socket_closed_5));
}
QUECTEL_M26_CellularStack::~QUECTEL_M26_CellularStack()
{
_at.set_urc_handler("5, CLOSED", nullptr);
_at.set_urc_handler("4, CLOSED", nullptr);
_at.set_urc_handler("3, CLOSED", nullptr);
_at.set_urc_handler("2, CLOSED", nullptr);
_at.set_urc_handler("1, CLOSED", nullptr);
_at.set_urc_handler("0, CLOSED", nullptr);
_at.set_urc_handler("+QIRDI:", nullptr);
}
nsapi_error_t QUECTEL_M26_CellularStack::socket_listen(nsapi_socket_t handle, int backlog)
{
return NSAPI_ERROR_UNSUPPORTED;
}
nsapi_error_t QUECTEL_M26_CellularStack::socket_accept(void *server, void **socket, SocketAddress *addr)
{
return NSAPI_ERROR_UNSUPPORTED;
}
nsapi_error_t QUECTEL_M26_CellularStack::socket_bind(nsapi_socket_t handle, const SocketAddress &addr)
{
return NSAPI_ERROR_UNSUPPORTED;
}
void QUECTEL_M26_CellularStack::socket_closed(int sock_id)
{
CellularSocket *sock = find_socket(sock_id);
if (sock) {
tr_info("Socket closed %d", sock_id);
sock->closed = true;
}
}
void QUECTEL_M26_CellularStack::socket_closed_0()
{
socket_closed(0);
}
void QUECTEL_M26_CellularStack::socket_closed_1()
{
socket_closed(1);
}
void QUECTEL_M26_CellularStack::socket_closed_2()
{
socket_closed(2);
}
void QUECTEL_M26_CellularStack::socket_closed_3()
{
socket_closed(3);
}
void QUECTEL_M26_CellularStack::socket_closed_4()
{
socket_closed(4);
}
void QUECTEL_M26_CellularStack::socket_closed_5()
{
socket_closed(5);
}
void QUECTEL_M26_CellularStack::urc_qiurc()
{
int sock_id = 0;
_at.lock();
(void) _at.skip_param(); /*<id> AT+QIFGCNT*/
(void) _at.skip_param(); /*<sc> 1 Client, 2 Server*/
sock_id = _at.read_int();
(void) _at.skip_param(); /*<num>*/
(void) _at.skip_param(); /*<len>*/
(void) _at.skip_param(); /*<tlen>*/
_at.unlock();
for (int i = 0; i < _device.get_property(AT_CellularDevice::PROPERTY_SOCKET_COUNT); i++) {
CellularSocket *sock = _socket[i];
if (sock && sock->id == sock_id) {
if (sock->_cb) {
sock->_cb(sock->_data);
}
break;
}
}
}
nsapi_error_t QUECTEL_M26_CellularStack::socket_stack_init()
{
int tcpip_mode = 1;
int mux_mode = 0;
int cache_mode = 0;
nsapi_error_t ret_val;
tr_debug("QUECTEL_M26_CellularStack:%s:%u: START ", __FUNCTION__, __LINE__);
_at.lock();
/*AT+QIFGCNT=0*/
_at.at_cmd_discard("+QIFGCNT", "=", "%d", 0);
ret_val = _at.get_last_error();
if (ret_val != NSAPI_ERROR_OK) {
_at.unlock();
return NSAPI_ERROR_DEVICE_ERROR;
}
#if 0
if (_pwd && _uname) {
_at.at_cmd_discard("+QICSGP", "=", "%d%s%s%s", 1, _apn, _uname, _pwd);
} else {
_at.at_cmd_discard("+QICSGP", "=", "%d%s", 1, _apn);
}
#endif
ret_val = _at.get_last_error();
if (ret_val != NSAPI_ERROR_OK) {
_at.unlock();
return NSAPI_ERROR_DEVICE_ERROR;
}
/*AT+QIMODE=0 Set transparent mode*/
_at.cmd_start_stop("+QIMODE", "?");
_at.resp_start("+QIMODE:");
if (_at.info_resp()) {
tcpip_mode = _at.read_int();
}
_at.resp_stop();
if (tcpip_mode) {
_at.at_cmd_discard("+QIMODE", "=", "%d", 0);
}
ret_val = _at.get_last_error();
if (ret_val != NSAPI_ERROR_OK) {
_at.unlock();
return NSAPI_ERROR_DEVICE_ERROR;
}
/*AT+QIMUX=1*/
_at.cmd_start_stop("+QIMUX", "?");
_at.resp_start("+QIMUX:");
if (_at.info_resp()) {
mux_mode = _at.read_int();
}
_at.resp_stop();
if (!mux_mode) {
_at.at_cmd_discard("+QIMUX", "=", "%d", 1);
}
ret_val = _at.get_last_error();
if (ret_val != NSAPI_ERROR_OK) {
_at.unlock();
return NSAPI_ERROR_DEVICE_ERROR;
}
/*AT+QINDI=2*/
_at.cmd_start_stop("+QINDI", "?");
_at.resp_start();
if (_at.info_resp()) {
cache_mode = _at.read_int();
}
_at.resp_stop();
if (cache_mode != 2) {
_at.at_cmd_discard("+QINDI", "=", "%d", 2);
}
ret_val = _at.get_last_error();
if (ret_val != NSAPI_ERROR_OK) {
_at.unlock();
return NSAPI_ERROR_DEVICE_ERROR;
}
_at.unlock();
tr_debug("QUECTEL_M26_CellularStack:%s:%u: SUCCESS ", __FUNCTION__, __LINE__);
return NSAPI_ERROR_OK;
}
nsapi_error_t QUECTEL_M26_CellularStack::socket_close_impl(int sock_id)
{
tr_debug("QUECTEL_M26_CellularStack:%s:%u:", __FUNCTION__, __LINE__);
return _at.at_cmd_discard("+QICLOSE", "=", "%d", sock_id);
}
void QUECTEL_M26_CellularStack::handle_open_socket_response(int &modem_connect_id, int &err)
{
char status[15];
tr_debug("QUECTEL_M26_CellularStack:%s:%u: START", __FUNCTION__, __LINE__);
_at.resp_start("ALREADY CONNECT");
if (_at.info_resp()) {
/* ALREADY CONNECT: The request socket already connected */
err = 0;
return;
}
_at.resp_stop();
if (_at.get_last_error() != NSAPI_ERROR_OK) {
/* ERROR: The command format error */
err = 1;
return;
}
tr_debug("QUECTEL_M26_CellularStack:%s:%u: OK", __FUNCTION__, __LINE__);
_at.set_at_timeout(M26_CREATE_SOCKET_TIMEOUT);
_at.resp_start();
_at.set_stop_tag("\r\n");
modem_connect_id = _at.read_int();
_at.read_string(status, sizeof(status), true);
_at.resp_stop();
_at.restore_at_timeout();
if ((!strcmp(status, "CONNECT FAIL")) || (_at.get_last_error() != NSAPI_ERROR_OK)) {
err = 1;
return;
}
err = 0;
tr_debug("QUECTEL_M26_CellularStack:%s:%u: END [%s, %d]", __FUNCTION__, __LINE__, status, err);
}
nsapi_error_t QUECTEL_M26_CellularStack::socket_connect(nsapi_socket_t handle, const SocketAddress &address)
{
CellularSocket *socket = (CellularSocket *)handle;
int modem_connect_id = -1;
int err = -1;
int request_connect_id = find_socket_index(socket);
// assert here as its a programming error if the socket container doesn't contain
// specified handle
MBED_ASSERT(request_connect_id != -1);
_at.lock();
if (socket->proto == NSAPI_TCP) {
_at.cmd_start_stop("+QIOPEN", "=", "%d%s%s%d", request_connect_id, "TCP",
address.get_ip_address(), address.get_port());;
handle_open_socket_response(modem_connect_id, err);
if ((_at.get_last_error() == NSAPI_ERROR_OK) && err) {
_at.at_cmd_discard("+QICLOSE", "=", "%d", modem_connect_id);
_at.cmd_start_stop("+QIOPEN", "=", "%d%s%s%d", request_connect_id, "TCP",
address.get_ip_address(), address.get_port());
handle_open_socket_response(modem_connect_id, err);
}
}
// If opened successfully BUT not requested one, close it
if (!err && (modem_connect_id != request_connect_id)) {
_at.at_cmd_discard("+QICLOSE", "=", "%d", modem_connect_id);
}
nsapi_error_t ret_val = _at.get_last_error();
_at.unlock();
if ((ret_val == NSAPI_ERROR_OK) && (modem_connect_id == request_connect_id)) {
socket->remoteAddress = address;
socket->connected = true;
return NSAPI_ERROR_OK;
}
return NSAPI_ERROR_NO_CONNECTION;
}
nsapi_error_t QUECTEL_M26_CellularStack::create_socket_impl(CellularSocket *socket)
{
// This modem is a special case. It takes in the socket ID rather than spitting
// it out. So we will first try to use the index of the socket construct as the id
// but if another opened socket is already opened with that id we will pick the next
// id which is not in use
bool duplicate = false;
int potential_sid = -1;
int index = find_socket_index(socket);
for (int i = 0; i < _device.get_property(AT_CellularDevice::PROPERTY_SOCKET_COUNT); i++) {
CellularSocket *sock = _socket[i];
if (sock && sock != socket && sock->id == index) {
duplicate = true;
} else if (duplicate && !sock) {
potential_sid = i;
break;
}
}
if (duplicate) {
index = potential_sid;
}
int request_connect_id = index;
int modem_connect_id = request_connect_id;
int err = -1;
nsapi_error_t ret_val;
tr_debug("QUECTEL_M26_CellularStack:%s:%u:[%d,%d]", __FUNCTION__, __LINE__, socket->proto, socket->connected);
if (socket->connected) {
_at.cmd_start_stop("+QIOPEN", "=", "%d%s%s%d", request_connect_id, (socket->proto == NSAPI_TCP) ? "TCP" : "UDP",
socket->remoteAddress.get_ip_address(), socket->remoteAddress.get_port());
handle_open_socket_response(modem_connect_id, err);
/* Close and retry if socket create fail */
if ((_at.get_last_error() != NSAPI_ERROR_OK) || err) {
_at.at_cmd_discard("+QICLOSE", "=", "%d", modem_connect_id);
_at.cmd_start_stop("+QIOPEN", "=", "%d%s%s%d", request_connect_id, (socket->proto == NSAPI_TCP) ? "TCP" : "UDP",
socket->remoteAddress.get_ip_address(), socket->remoteAddress.get_port());
handle_open_socket_response(modem_connect_id, err);
}
/* If opened successfully BUT not requested one, close it */
if (!err && (modem_connect_id != request_connect_id)) {
_at.at_cmd_discard("+QICLOSE", "=", "%d", modem_connect_id);
}
ret_val = _at.get_last_error();
if ((ret_val == NSAPI_ERROR_OK) && (modem_connect_id == request_connect_id)) {
socket->id = request_connect_id;
}
return ret_val;
} else {
ret_val = NSAPI_ERROR_OK;
}
tr_debug("QUECTEL_M26_CellularStack:%s:%u: END [%d]", __FUNCTION__, __LINE__, ret_val);
return ret_val;
}
nsapi_size_or_error_t QUECTEL_M26_CellularStack::socket_sendto_impl(CellularSocket *socket, const SocketAddress &address,
const void *data, nsapi_size_t size)
{
int sent_len = size;
int sent_acked = 0;
int sent_nacked = 0;
int sent_len_before = 0;
int sent_len_after = 0;
nsapi_error_t error;
tr_debug("QUECTEL_M26_CellularStack:%s:%u:[%d-%d]", __FUNCTION__, __LINE__, sent_len, size);
if (sent_len == 0 || size > M26_SENT_BYTE_MAX) {
tr_error("QUECTEL_M26_CellularStack:%s:%u:[NSAPI_ERROR_PARAMETER]", __FUNCTION__, __LINE__);
return NSAPI_ERROR_PARAMETER;
}
if (socket->id == -1) {
socket->remoteAddress = address;
socket->connected = true;
nsapi_error_t ret_val = create_socket_impl(socket);
if ((ret_val != NSAPI_ERROR_OK) || (socket->id == -1)) {
tr_error("QUECTEL_M26_CellularStack:%s:%u:[NSAPI_ERROR_NO_SOCKET]", __FUNCTION__, __LINE__);
return NSAPI_ERROR_NO_SOCKET;
}
}
if (socket->proto == NSAPI_TCP) {
bool ready_to_send = false;
auto start_time = rtos::Kernel::Clock::now() ;
while (!ready_to_send && rtos::Kernel::Clock::now() < start_time + SOCKET_SEND_READY_TIMEOUT) {
_at.cmd_start_stop("+QISACK", "=", "%d", socket->id);
_at.resp_start("+QISACK:");
sent_len_before = _at.read_int();
sent_acked = _at.read_int();
(void)sent_acked;
sent_nacked = _at.read_int();
_at.resp_stop();
if (_at.get_last_error() != NSAPI_ERROR_OK) {
tr_error("QUECTEL_M26_CellularStack:%s:%u:[NSAPI_ERROR_DEVICE_ERROR]", __FUNCTION__, __LINE__);
return NSAPI_ERROR_DEVICE_ERROR;
}
if (sent_nacked == 0) {
ready_to_send = true;
} else {
tr_debug("QUECTEL_M26_CellularStack:%s:%u:[NSAPI_ERROR_WOULD_BLOCK]", __FUNCTION__, __LINE__);
}
}
}
_at.cmd_start_stop("+QISEND", "=", "%d%d", socket->id, sent_len);
_at.resp_start(">");
_at.write_bytes((uint8_t *)data, sent_len);
_at.resp_start();
_at.set_stop_tag("\r\n");
// Possible responses are SEND OK, SEND FAIL or ERROR.
char response[16];
response[0] = '\0';
_at.read_string(response, sizeof(response));
_at.resp_stop();
if (strcmp(response, "SEND OK") != 0) {
return NSAPI_ERROR_DEVICE_ERROR;
}
if (_at.get_last_error() != NSAPI_ERROR_OK) {
tr_error("QUECTEL_M26_CellularStack:%s:%u:[NSAPI_ERROR_DEVICE_ERROR]", __FUNCTION__, __LINE__);
return NSAPI_ERROR_DEVICE_ERROR;
}
if (socket->proto == NSAPI_TCP) {
_at.cmd_start_stop("+QISACK", "=", "%d", socket->id);
_at.resp_start("+QISACK:");
sent_len_after = _at.read_int();
sent_acked = _at.read_int();
(void)sent_acked; // avoid compile warning, used only for debugging
sent_nacked = _at.read_int();
_at.resp_stop();
error = _at.get_last_error();
if (error == NSAPI_ERROR_OK) {
sent_len = sent_len_after - sent_len_before;
tr_debug("QUECTEL_M26_CellularStack:%s:%u:[TCP: BA %d-%d, ACK %d-%d,LEN %d-%d]", __FUNCTION__, __LINE__, sent_len_before, sent_len_after, sent_acked, sent_nacked, sent_len, size);
return sent_len;
}
tr_error("QUECTEL_M26_CellularStack:%s:%u:[TCP: %d]", __FUNCTION__, __LINE__, error);
return error;
}
error = _at.get_last_error();
if (error == NSAPI_ERROR_OK) {
tr_debug("QUECTEL_M26_CellularStack:%s:%u:[UDP: %d]", __FUNCTION__, __LINE__, sent_len);
return sent_len;
}
tr_debug("QUECTEL_M26_CellularStack:%s:%u:[ERROR: %d]", __FUNCTION__, __LINE__, error);
return error;
}
nsapi_size_or_error_t QUECTEL_M26_CellularStack::socket_recvfrom_impl(CellularSocket *socket, SocketAddress *address,
void *buffer, nsapi_size_t size)
{
int port;
char type[8];
char ip_address[NSAPI_IP_SIZE + 1];
tr_debug("QUECTEL_M26_CellularStack:%s:%u:[%d]", __FUNCTION__, __LINE__, size);
auto start_time = rtos::Kernel::Clock::now();
nsapi_size_t len = 0;
for (; len < size;) {
unsigned int read_len = (size - len > M26_RECV_BYTE_MAX) ? M26_RECV_BYTE_MAX : size - len;
_at.cmd_start_stop("+QIRD", "=", "%d%d%d%d", 0, 1, socket->id, read_len);
nsapi_size_t recv_len = 0;
_at.resp_start("+QIRD:");
if (_at.info_resp()) {
_at.set_delimiter(':');
_at.read_string(ip_address, sizeof(ip_address));
_at.set_default_delimiter();
port = _at.read_int();
_at.read_string(type, sizeof(type));
recv_len = _at.read_int();
_at.read_bytes((uint8_t *)buffer + len, recv_len);
len += recv_len;
}
_at.resp_stop();
if (_at.get_last_error() != NSAPI_ERROR_OK) {
tr_warn("QUECTEL_M26_CellularStack:%s:%u:[ERROR NSAPI_ERROR_OK]", __FUNCTION__, __LINE__);
return NSAPI_ERROR_DEVICE_ERROR;
}
if (rtos::Kernel::Clock::now() > start_time + SOCKET_READ_TIMEOUT) {
tr_warn("QUECTEL_M26_CellularStack:%s:%u:[ERROR NSAPI_ERROR_TIMEOUT]", __FUNCTION__, __LINE__);
return NSAPI_ERROR_TIMEOUT;
}
if (recv_len == 0 || recv_len < read_len) {
break;
}
}
if (len == 0) {
tr_debug("QUECTEL_M26_CellularStack:%s:%u:[ERROR NSAPI_ERROR_WOULD_BLOCK]", __FUNCTION__, __LINE__);
return NSAPI_ERROR_WOULD_BLOCK;
}
if (address) {
address->set_ip_address(ip_address);
address->set_port(port);
}
tr_debug("QUECTEL_M26_CellularStack:%s:%u:[%d]", __FUNCTION__, __LINE__, len);
return len;
}
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