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SPWFSAxx.cpp
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/* SPWFSAxx Devices
* Copyright (c) 2015 ARM Limited
*
* 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 "mbed_debug.h"
#include "SpwfSAInterface.h" /* must be included first */
#include "SPWFSAxx.h"
static const char out_delim[] = {SPWFSAxx::_cr_, '\0'};
SPWFSAxx::SPWFSAxx(PinName tx, PinName rx,
PinName rts, PinName cts,
SpwfSAInterface &ifce, bool debug,
PinName wakeup, PinName reset)
: _serial(tx, rx, SPWFXX_DEFAULT_BAUD_RATE), _parser(&_serial, out_delim),
_wakeup(wakeup, 1), _reset(reset, 1),
_rts(rts), _cts(cts),
_timeout(SPWF_INIT_TIMEOUT), _dbg_on(debug),
_pending_sockets_bitmap(0),
_network_lost_flag(false),
_associated_interface(ifce),
_call_event_callback_blocked(false),
_callback_func(),
_packets(0), _packets_end(&_packets),
_msg_buffer(ssid_buf)
{
memset(_pending_pkt_sizes, 0, sizeof(_pending_pkt_sizes));
_serial.set_baud(SPWFXX_DEFAULT_BAUD_RATE);
_serial.sigio(Callback<void()>(this, &SPWFSAxx::_event_handler));
_parser.debug_on(debug);
_parser.oob("+WIND:55:Pending Data", callback(this, &SPWFSAxx::_packet_handler_th));
_parser.oob("+WIND:58:Socket Closed", callback(this, &SPWFSAxx::_server_gone_handler));
_parser.oob("+WIND:33:WiFi Network Lost", callback(this, &SPWFSAxx::_network_lost_handler_th));
_parser.oob("+WIND:8:Hard Fault", callback(this, &SPWFSAxx::_hard_fault_handler));
_parser.oob("+WIND:5:WiFi Hardware Failure", callback(this, &SPWFSAxx::_wifi_hwfault_handler));
_parser.oob(SPWFXX_OOB_ERROR, callback(this, &SPWFSAxx::_error_handler));
#if MBED_CONF_IDW0XX1_EXPANSION_BOARD == IDW04A1
_parser.oob("+WIND:24:WiFi Up::", callback(this, &SPWFSAxx::_skip_oob));
#endif
}
bool SPWFSAxx::startup(int mode)
{
BlockExecuter netsock_wa_obj(Callback<void()>(this, &SPWFSAxx::_unblock_event_callback),
Callback<void()>(this, &SPWFSAxx::_block_event_callback)); /* do not call (external) callback in IRQ context while receiving */
/*Reset module*/
if(!hw_reset()) {
debug_if(_dbg_on, "\r\nSPWF> HW reset failed\r\n");
return false;
}
/* factory reset */
if(!(_parser.send(SPWFXX_SEND_FWCFG) && _recv_ok()))
{
debug_if(_dbg_on, "\r\nSPWF> error restore factory default settings\r\n");
return false;
}
/*switch off led*/
if(!(_parser.send("AT+S.SCFG=blink_led,0") && _recv_ok()))
{
debug_if(_dbg_on, "\r\nSPWF> error stop blinking led (%d)\r\n", __LINE__);
return false;
}
/*set local echo to 0*/
if(!(_parser.send(SPWFXX_SEND_DISABLE_LE) && _recv_ok()))
{
debug_if(_dbg_on, "\r\nSPWF> error local echo set\r\n");
return false;
}
/*set Wi-Fi mode and rate to b/g/n*/
if(!(_parser.send("AT+S.SCFG=wifi_ht_mode,1") && _recv_ok()))
{
debug_if(_dbg_on, "\r\nSPWF> error setting ht_mode\r\n");
return false;
}
/*set the operational rate*/
if(!(_parser.send("AT+S.SCFG=wifi_opr_rate_mask,0x003FFFCF") && _recv_ok()))
{
debug_if(_dbg_on, "\r\nSPWF> error setting operational rates\r\n");
return false;
}
/*set idle mode (0->idle, 1->STA,3->miniAP, 2->IBSS)*/
if(!(_parser.send("AT+S.SCFG=wifi_mode,%d", mode) && _recv_ok()))
{
debug_if(_dbg_on, "\r\nSPWF> error WiFi mode set idle (%d)\r\n", __LINE__);
return false;
}
#if defined(MBED_MAJOR_VERSION)
#if !DEVICE_SERIAL_FC || (MBED_VERSION < MBED_ENCODE_VERSION(5, 7, 0))
/*disable HW flow control*/
if(!(_parser.send(SPWFXX_SEND_DISABLE_FC) && _recv_ok()))
{
debug_if(_dbg_on, "\r\nSPWF> error disabling HW flow control\r\n");
return false;
}
#else // DEVICE_SERIAL_FC && (MBED_VERSION >= MBED_ENCODE_VERSION(5, 7, 0))
if((_rts != NC) && (_cts != NC)) {
/*enable HW flow control*/
if(!(_parser.send(SPWFXX_SEND_ENABLE_FC) && _recv_ok()))
{
debug_if(_dbg_on, "\r\nSPWF> error enabling HW flow control\r\n");
return false;
}
/*configure pins for HW flow control*/
_serial.set_flow_control(SerialBase::RTSCTS, _rts, _cts);
} else {
/*disable HW flow control*/
if(!(_parser.send(SPWFXX_SEND_DISABLE_FC) && _recv_ok()))
{
debug_if(_dbg_on, "\r\nSPWF> error disabling HW flow control\r\n");
return false;
}
}
#endif // DEVICE_SERIAL_FC && (MBED_VERSION >= MBED_ENCODE_VERSION(5, 7, 0))
#else // !defined(MBED_MAJOR_VERSION) - Assuming `master` branch
#if !DEVICE_SERIAL_FC
/*disable HW flow control*/
if(!(_parser.send(SPWFXX_SEND_DISABLE_FC) && _recv_ok()))
{
debug_if(_dbg_on, "\r\nSPWF> error disabling HW flow control\r\n");
return false;
}
#else // DEVICE_SERIAL_FC
if((_rts != NC) && (_cts != NC)) {
/*enable HW flow control*/
if(!(_parser.send(SPWFXX_SEND_ENABLE_FC) && _recv_ok()))
{
debug_if(_dbg_on, "\r\nSPWF> error enabling HW flow control\r\n");
return false;
}
/*configure pins for HW flow control*/
_serial.set_flow_control(SerialBase::RTSCTS, _rts, _cts);
} else {
/*disable HW flow control*/
if(!(_parser.send(SPWFXX_SEND_DISABLE_FC) && _recv_ok()))
{
debug_if(_dbg_on, "\r\nSPWF> error disabling HW flow control\r\n");
return false;
}
}
#endif // DEVICE_SERIAL_FC
#endif // !defined(MBED_MAJOR_VERSION)
/* Disable selected WINDs */
_winds_on();
/* sw reset */
if(!reset()) {
debug_if(_dbg_on, "\r\nSPWF> SW reset failed (%s, %d)\r\n", __func__, __LINE__);
return false;
}
#ifndef NDEBUG
if (!(_parser.send(SPWFXX_SEND_GET_CONS_STATE)
&& _recv_ok())) {
debug_if(_dbg_on, "\r\nSPWF> error getting console state\r\n");
return false;
}
if (!(_parser.send(SPWFXX_SEND_GET_CONS_SPEED)
&& _recv_ok())) {
debug_if(_dbg_on, "\r\nSPWF> error getting console speed\r\n");
return false;
}
if (!(_parser.send(SPWFXX_SEND_GET_HWFC_STATE)
&& _recv_ok())) {
debug_if(_dbg_on, "\r\nSPWF> error getting hwfc state\r\n");
return false;
}
#if (MBED_CONF_IDW0XX1_EXPANSION_BOARD == IDW04A1) || defined(IDW01M1_FW_REL_35X)
/* betzw: IDW01M1 FW versions <3.5 seem to have problems with the following two commands.
* For the sake of simplicity, just excluding them for IDW01M1 in general.
*/
if (!(_parser.send(SPWFXX_SEND_GET_CONS_DELIM)
&& _recv_ok())) {
debug_if(_dbg_on, "\r\nSPWF> error getting console delimiter\r\n");
return false;
}
if (!(_parser.send(SPWFXX_SEND_GET_CONS_ERRS)
&& _recv_ok())) {
debug_if(_dbg_on, "\r\nSPWF> error getting console error setting\r\n");
return false;
}
#endif // (MBED_CONF_IDW0XX1_EXPANSION_BOARD == IDW04A1) || defined(IDW01M1_FW_REL_35X)
if (!(_parser.send("AT+S.GCFG=sleep_enabled")
&& _recv_ok())) {
debug_if(_dbg_on, "\r\nSPWF> error getting sleep state enabled\r\n");
return false;
}
if (!(_parser.send("AT+S.GCFG=wifi_powersave")
&& _recv_ok())) {
debug_if(_dbg_on, "\r\nSPWF> error getting powersave mode\r\n");
return false;
}
if (!(_parser.send("AT+S.GCFG=standby_enabled")
&& _recv_ok())) {
debug_if(_dbg_on, "\r\nSPWF> error getting standby state enabled\r\n");
return false;
}
#endif
return true;
}
bool SPWFSAxx::_wait_console_active(void) {
int trials = 0;
while(true) {
if (_parser.recv("+WIND:0:Console active\n") && _recv_delim_lf()) {
debug_if(_dbg_on, "AT^ +WIND:0:Console active\r\n");
return true;
}
if(++trials >= SPWFXX_MAX_TRIALS) {
debug("%s (%d) - ERROR: Should never happen!\r\n", __func__, __LINE__);
empty_rx_buffer();
return false;
}
}
}
bool SPWFSAxx::_wait_wifi_hw_started(void) {
int trials = 0;
while(true) {
if (_parser.recv("+WIND:32:WiFi Hardware Started\n") && _recv_delim_lf()) {
debug_if(_dbg_on, "AT^ +WIND:32:WiFi Hardware Started\r\n");
return true;
}
if(++trials >= SPWFXX_MAX_TRIALS) {
debug("%s (%d) - ERROR: Should never happen!\r\n", __func__, __LINE__);
empty_rx_buffer();
return false;
}
}
}
bool SPWFSAxx::hw_reset(void)
{
#if (MBED_CONF_IDW0XX1_EXPANSION_BOARD != IDW04A1) || !defined(IDW04A1_WIFI_HW_BUG_WA) // betzw: HW reset doesn't work as expected on unmodified X_NUCLEO_IDW04A1 expansion boards
_reset.write(0);
wait_ms(200);
_reset.write(1);
#else // (MBED_CONF_IDW0XX1_EXPANSION_BOARD == IDW04A1) && defined(IDW04A1_WIFI_HW_BUG_WA): substitute with SW reset
_parser.send(SPWFXX_SEND_SW_RESET);
#endif // (MBED_CONF_IDW0XX1_EXPANSION_BOARD == IDW04A1) && defined(IDW04A1_WIFI_HW_BUG_WA)
return _wait_console_active();
}
bool SPWFSAxx::reset(void)
{
bool ret;
/* save current setting in flash */
if(!(_parser.send(SPWFXX_SEND_SAVE_SETTINGS) && _recv_ok()))
{
debug_if(_dbg_on, "\r\nSPWF> error saving configuration to flash\r\n");
return false;
}
if(!_parser.send(SPWFXX_SEND_SW_RESET)) return false; /* betzw - NOTE: "keep the current state and reset the device".
We assume that the module informs us about the
eventual closing of sockets via "WIND" asynchronous
indications! So everything regarding the clean-up
of these situations is handled there. */
ret = _wait_wifi_hw_started();
return ret;
}
/* Security Mode
None = 0,
WEP = 1,
WPA_Personal = 2,
*/
bool SPWFSAxx::connect(const char *ap, const char *passPhrase, int securityMode)
{
int trials;
//AT+S.SCFG=wifi_wpa_psk_text,%s
if(!(_parser.send("AT+S.SCFG=wifi_wpa_psk_text,%s", passPhrase) && _recv_ok()))
{
debug_if(_dbg_on, "\r\nSPWF> error pass set\r\n");
return false;
}
//AT+S.SSIDTXT=%s
if(!(_parser.send("AT+S.SSIDTXT=%s", ap) && _recv_ok()))
{
debug_if(_dbg_on, "\r\nSPWF> error ssid set\r\n");
return false;
}
//AT+S.SCFG=wifi_priv_mode,%d
if(!(_parser.send("AT+S.SCFG=wifi_priv_mode,%d", securityMode) && _recv_ok()))
{
debug_if(_dbg_on, "\r\nSPWF> error security mode set\r\n");
return false;
}
/*set STA mode (0->idle, 1->STA,3->miniAP, 2->IBSS)*/
if(!(_parser.send("AT+S.SCFG=wifi_mode,1") && _recv_ok()))
{
debug_if(_dbg_on, "\r\nSPWF> error WiFi mode set 1 (STA)\r\n");
return false;
}
/* sw reset */
if(!reset()) {
debug_if(_dbg_on, "\r\nSPWF> SW reset failed (%s, %d)\r\n", __func__, __LINE__);
return false;
}
trials = 0;
while(true) {
if(_parser.recv("%[^\n]\n", _msg_buffer) && _recv_delim_lf())
{
if(strstr(_msg_buffer, ":24:") != NULL) { // WiFi Up
debug_if(_dbg_on, "AT^ %s\n", _msg_buffer);
if(strchr(_msg_buffer, '.') != NULL) { // IPv4 address
break;
} else {
continue;
}
}
if(strstr(_msg_buffer, ":40:") != NULL) { // Deauthentication
debug_if(_dbg_on, "AT~ %s\n", _msg_buffer);
if(++trials < 3) { // give it three trials
continue;
}
empty_rx_buffer();
disconnect();
return false;
} else {
debug_if(_dbg_on, "AT] %s\n", _msg_buffer);
}
continue;
}
if(++trials >= SPWFXX_MAX_TRIALS) {
debug("%s (%d) - ERROR: Should never happen!\r\n", __func__, __LINE__);
empty_rx_buffer();
return false;
}
}
return true;
}
bool SPWFSAxx::disconnect(void)
{
#if MBED_CONF_IDW0XX1_EXPANSION_BOARD == IDW04A1
/*disable Wi-Fi device*/
if(!(_parser.send("AT+S.WIFI=0") && _recv_ok()))
{
debug_if(_dbg_on, "\r\nSPWF> error disabling WiFi\r\n");
return false;
}
#endif // IDW04A1
/*set idle mode (0->idle, 1->STA,3->miniAP, 2->IBSS)*/
if(!(_parser.send("AT+S.SCFG=wifi_mode,0") && _recv_ok()))
{
debug_if(_dbg_on, "\r\nSPWF> error WiFi mode set idle (%d)\r\n", __LINE__);
return false;
}
#if MBED_CONF_IDW0XX1_EXPANSION_BOARD == IDW04A1
/*enable Wi-Fi device*/
if(!(_parser.send("AT+S.WIFI=1") && _recv_ok()))
{
debug_if(_dbg_on, "\r\nSPWF> error enabling WiFi\r\n");
return false;
}
#endif // IDW04A1
// reset module
if(!reset()) {
debug_if(_dbg_on, "\r\nSPWF> SW reset failed (%s, %d)\r\n", __func__, __LINE__);
return false;
}
return true;
}
const char *SPWFSAxx::getIPAddress(void)
{
unsigned int n1, n2, n3, n4;
if (!(_parser.send("AT+S.STS=ip_ipaddr")
&& _parser.recv(SPWFXX_RECV_IP_ADDR, &n1, &n2, &n3, &n4)
&& _recv_ok())) {
debug_if(_dbg_on, "\r\nSPWF> get IP address error\r\n");
return NULL;
}
debug_if(_dbg_on, "AT^ ip_ipaddr = %u.%u.%u.%u\r\n", n1, n2, n3, n4);
sprintf((char*)_ip_buffer,"%u.%u.%u.%u", n1, n2, n3, n4);
return _ip_buffer;
}
const char *SPWFSAxx::getGateway(void)
{
unsigned int n1, n2, n3, n4;
if (!(_parser.send("AT+S.STS=ip_gw")
&& _parser.recv(SPWFXX_RECV_GATEWAY, &n1, &n2, &n3, &n4)
&& _recv_ok())) {
debug_if(_dbg_on, "\r\nSPWF> get gateway error\r\n");
return NULL;
}
debug_if(_dbg_on, "AT^ ip_gw = %u.%u.%u.%u\r\n", n1, n2, n3, n4);
sprintf((char*)_gateway_buffer,"%u.%u.%u.%u", n1, n2, n3, n4);
return _gateway_buffer;
}
const char *SPWFSAxx::getNetmask(void)
{
unsigned int n1, n2, n3, n4;
if (!(_parser.send("AT+S.STS=ip_netmask")
&& _parser.recv(SPWFXX_RECV_NETMASK, &n1, &n2, &n3, &n4)
&& _recv_ok())) {
debug_if(_dbg_on, "\r\nSPWF> get netmask error\r\n");
return NULL;
}
debug_if(_dbg_on, "AT^ ip_netmask = %u.%u.%u.%u\r\n", n1, n2, n3, n4);
sprintf((char*)_netmask_buffer,"%u.%u.%u.%u", n1, n2, n3, n4);
return _netmask_buffer;
}
int8_t SPWFSAxx::getRssi(void)
{
int ret;
if (!(_parser.send("AT+S.PEERS=0,rx_rssi")
&& _parser.recv(SPWFXX_RECV_RX_RSSI, &ret)
&& _recv_ok())) {
debug_if(_dbg_on, "\r\nSPWF> get RX rssi error\r\n");
return 0;
}
return (int8_t)ret;
}
const char *SPWFSAxx::getMACAddress(void)
{
unsigned int n1, n2, n3, n4, n5, n6;
if (!(_parser.send("AT+S.GCFG=nv_wifi_macaddr")
&& _parser.recv(SPWFXX_RECV_MAC_ADDR, &n1, &n2, &n3, &n4, &n5, &n6)
&& _recv_ok())) {
debug_if(_dbg_on, "\r\nSPWF> get MAC address error\r\n");
return 0;
}
debug_if(_dbg_on, "AT^ nv_wifi_macaddr = %x:%x:%x:%x:%x:%x\r\n", n1, n2, n3, n4, n5, n6);
sprintf((char*)_mac_buffer,"%02X:%02X:%02X:%02X:%02X:%02X", n1, n2, n3, n4, n5, n6);
return _mac_buffer;
}
bool SPWFSAxx::isConnected(void)
{
return _associated_interface._connected_to_network;
}
bool SPWFSAxx::send(int spwf_id, const void *data, uint32_t amount)
{
uint32_t sent = 0U, to_send;
bool ret = true;
/* betzw - WORK AROUND module FW issues: split up big packages in smaller ones */
for(to_send = (amount > SPWFXX_SEND_RECV_PKTSIZE) ? SPWFXX_SEND_RECV_PKTSIZE : amount;
sent < amount;
to_send = ((amount - sent) > SPWFXX_SEND_RECV_PKTSIZE) ? SPWFXX_SEND_RECV_PKTSIZE : (amount - sent)) {
{
BlockExecuter bh_handler(Callback<void()>(this, &SPWFSAxx::_execute_bottom_halves));
if (!(_parser.send("AT+S.SOCKW=%d,%d", spwf_id, (unsigned int)to_send)
&& (_parser.write(((char*)data)+sent, (int)to_send) == (int)to_send)
&& _recv_ok())) {
// betzw - TODO: handle different errors more accurately!
ret = false;
break;
}
}
sent += to_send;
}
return ret;
}
int SPWFSAxx::_read_len(int spwf_id) {
unsigned int amount;
if (!(_parser.send("AT+S.SOCKQ=%d", spwf_id)
&& _parser.recv(SPWFXX_RECV_DATALEN, &amount)
&& _recv_ok())) {
debug_if(_dbg_on, "\r\nSPWF> %s failed\r\n", __func__);
return SPWFXX_ERR_LEN;
}
if(amount > 0) {
debug_if(_dbg_on, "%s():\t\t%d:%d\r\n", __func__, spwf_id, amount);
}
MBED_ASSERT(((int)amount) >= 0);
return (int)amount;
}
#define SPWFXX_WINDS_OFF "0xFFFFFFFF"
void SPWFSAxx::_winds_on(void) {
MBED_ASSERT(_call_event_callback_blocked);
if(!(_parser.send(SPWFXX_SEND_WIND_OFF_HIGH SPWFXX_WINDS_HIGH_ON) && _recv_ok())) {
debug_if(_dbg_on, "%s: failed at line #%d\r\n", __func__, __LINE__);
}
if(!(_parser.send(SPWFXX_SEND_WIND_OFF_MEDIUM SPWFXX_WINDS_MEDIUM_ON) && _recv_ok())) {
debug_if(_dbg_on, "%s: failed at line #%d\r\n", __func__, __LINE__);
}
if(!(_parser.send(SPWFXX_SEND_WIND_OFF_LOW SPWFXX_WINDS_LOW_ON) && _recv_ok())) {
debug_if(_dbg_on, "%s: failed at line #%d\r\n", __func__, __LINE__);
}
}
/* Define beyond macro in case you want to report back failures in switching off WINDs to the caller */
// #define SPWFXX_SOWF
/* Note: in case of error blocking has been (tried to be) lifted */
bool SPWFSAxx::_winds_off(void) {
MBED_ASSERT(_call_event_callback_blocked);
if (!(_parser.send(SPWFXX_SEND_WIND_OFF_LOW SPWFXX_WINDS_OFF)
&& _recv_ok())) {
debug_if(_dbg_on, "%s: failed at line #%d\r\n", __func__, __LINE__);
#ifdef SPWFXX_SOWF // betzw: try to continue
_winds_on();
return false;
#endif
}
if (!(_parser.send(SPWFXX_SEND_WIND_OFF_MEDIUM SPWFXX_WINDS_OFF)
&& _recv_ok())) {
debug_if(_dbg_on, "%s: failed at line #%d\r\n", __func__, __LINE__);
#ifdef SPWFXX_SOWF // betzw: try to continue
_winds_on();
return false;
#endif
}
if (!(_parser.send(SPWFXX_SEND_WIND_OFF_HIGH SPWFXX_WINDS_OFF)
&& _recv_ok())) {
debug_if(_dbg_on, "%s: failed at line #%d\r\n", __func__, __LINE__);
#ifdef SPWFXX_SOWF // betzw: try to continue
_winds_on();
return false;
#endif
}
return true;
}
void SPWFSAxx::_execute_bottom_halves(void) {
_network_lost_handler_bh();
_packet_handler_bh();
}
void SPWFSAxx::_read_in_pending(void) {
static int internal_id_cnt = 0;
while(_is_data_pending()) {
if(_associated_interface._socket_has_connected(internal_id_cnt)) {
int spwf_id = _associated_interface._ids[internal_id_cnt].spwf_id;
if(_is_data_pending(spwf_id)) {
int amount;
amount = _read_in_pkt(spwf_id, false);
if(amount == SPWFXX_ERR_OOM) { /* consider only 'SPWFXX_ERR_OOM' as non recoverable */
return;
}
}
if(!_is_data_pending(spwf_id)) {
internal_id_cnt++;
internal_id_cnt %= SPWFSA_SOCKET_COUNT;
}
} else {
internal_id_cnt++;
internal_id_cnt %= SPWFSA_SOCKET_COUNT;
}
}
}
/* Note: returns
* 'SPWFXX_ERR_OK' in case of success
* 'SPWFXX_ERR_OOM' in case of "out of memory"
* 'SPWFXX_ERR_READ' in case of `_read_in()` error
*/
int SPWFSAxx::_read_in_packet(int spwf_id, uint32_t amount) {
struct packet *packet = (struct packet*)malloc(sizeof(struct packet) + amount);
if (!packet) {
#ifndef NDEBUG
error("%s(%d): Out of memory!\r\n", __func__, __LINE__);
#else // NDEBUG
debug("%s(%d): Out of memory!\r\n", __func__, __LINE__);
#endif
debug_if(_dbg_on, "\r\nSPWF> %s failed (%d)\r\n", __func__, __LINE__);
return SPWFXX_ERR_OOM; /* out of memory: give up here! */
}
/* init packet */
packet->id = spwf_id;
packet->len = amount;
packet->next = 0;
/* read data in */
if(!(_read_in((char*)(packet + 1), spwf_id, amount) > 0)) {
free(packet);
debug_if(_dbg_on, "\r\nSPWF> %s failed (%d)\r\n", __func__, __LINE__);
return SPWFXX_ERR_READ;
} else {
debug_if(_dbg_on, "%s():\t%d:%d\r\n", __func__, spwf_id, amount);
/* append to packet list */
*_packets_end = packet;
_packets_end = &packet->next;
/* force call of (external) callback */
_call_callback();
}
return SPWFXX_ERR_OK;
}
void SPWFSAxx::_free_packets(int spwf_id) {
// check if any packets are ready for `spwf_id`
for(struct packet **p = &_packets; *p;) {
if ((*p)->id == spwf_id) {
struct packet *q = *p;
if (_packets_end == &(*p)->next) {
_packets_end = p;
}
*p = (*p)->next;
free(q);
} else {
p = &(*p)->next;
}
}
}
void SPWFSAxx::_free_all_packets() {
for (int spwf_id = 0; spwf_id < SPWFSA_SOCKET_COUNT; spwf_id++) {
_free_packets(spwf_id);
}
}
bool SPWFSAxx::close(int spwf_id)
{
bool ret = false;
if(((unsigned int)spwf_id) >= ((unsigned int)SPWFSA_SOCKET_COUNT)) {
goto close_bh_handling; // `ret == false`
}
for(int retry_cnt = 0; retry_cnt < SPWFXX_MAX_TRIALS; retry_cnt++) {
// Flush out pending data
while(true) {
int amount = _read_in_pkt(spwf_id, true);
if(amount < 0) { // SPWFXX error
/* empty RX buffer & try to close */
empty_rx_buffer();
break;
}
if(amount == 0) break; // no more data to be read
/* immediately free packet (to avoid "out of memory") */
_free_packets(spwf_id);
/* interleave bottom halves */
_execute_bottom_halves();
}
// Close socket
if (_parser.send("AT+S.SOCKC=%d", spwf_id)
&& _recv_ok()) {
ret = true;
break; // finish closing
} else { // close failed
debug_if(_dbg_on, "\r\nSPWF> %s failed (%d)\r\n", __func__, __LINE__);
/* interleave bottom halves */
_execute_bottom_halves();
}
}
close_bh_handling:
/* anticipate bottom halves */
_execute_bottom_halves();
if(ret) {
/* clear pending data flag (should be redundant) */
_clear_pending_data(spwf_id);
/* free packets for this socket */
_free_packets(spwf_id);
/* reset pending data sizes */
_reset_pending_pkt_sizes(spwf_id);
} else {
debug_if(_dbg_on, "\r\nSPWF> SPWFSAxx::close failed (%d)\r\n", __LINE__);
int internal_id = _associated_interface.get_internal_id(spwf_id);
if(!_associated_interface._socket_is_still_connected(internal_id)) {
/* clear pending data flag (should be redundant) */
_clear_pending_data(spwf_id);
/* free packets for this socket */
_free_packets(spwf_id);
/* reset pending data sizes */
_reset_pending_pkt_sizes(spwf_id);
ret = true;
}
}
return ret;
}
/*
* Buffered serial event handler
*
* Note: executed in IRQ context!
* Note: do not call (external) callback in IRQ context while performing critical module operations
*/
void SPWFSAxx::_event_handler(void)
{
if(!_is_event_callback_blocked()) {
_call_callback();
}
}
/*
* Common error handler
*/
void SPWFSAxx::_error_handler(void)
{
if(_parser.recv("%[^\n]\n", _msg_buffer) && _recv_delim_lf()) {
debug_if(_dbg_on, "AT^ ERROR:%s (%d)\r\n", _msg_buffer, __LINE__);
} else {
debug_if(_dbg_on, "\r\nSPWF> Unknown ERROR string in SPWFSAxx::_error_handler (%d)\r\n", __LINE__);
}
/* force call of (external) callback */
_call_callback();
}
/*
* Handling oob ("+WIND:33:WiFi Network Lost")
*/
void SPWFSAxx::_network_lost_handler_th(void)
{
#ifndef NDEBUG
static unsigned int net_loss_cnt = 0;
net_loss_cnt++;
#endif
_recv_delim_cr_lf();
debug_if(_dbg_on, "AT^ +WIND:33:WiFi Network Lost\r\n");
#ifndef NDEBUG
debug_if(_dbg_on, "Getting out of SPWFSAxx::_network_lost_handler_th: %d\r\n", net_loss_cnt);
#else // NDEBUG
debug_if(_dbg_on, "Getting out of SPWFSAxx::_network_lost_handler_th: %d\r\n", __LINE__);
#endif // NDEBUG
/* set flag to signal network loss */
_network_lost_flag = true;
/* force call of (external) callback */
_call_callback();
return;
}
/* betzw - WORK AROUND module FW issues: split up big packages in smaller ones */
void SPWFSAxx::_add_pending_packet_sz(int spwf_id, uint32_t size) {
uint32_t to_add;
uint32_t added = _get_cumulative_size(spwf_id);
if(size <= added) { // might happen due to delayed WIND delivery
debug_if(_dbg_on, "%s: failed at line #%d\r\n", __func__, __LINE__);
return;
}
for(to_add = ((size - added) > SPWFXX_SEND_RECV_PKTSIZE) ? SPWFXX_SEND_RECV_PKTSIZE : (size - added);
added < size;
to_add = ((size - added) > SPWFXX_SEND_RECV_PKTSIZE) ? SPWFXX_SEND_RECV_PKTSIZE : (size - added)) {
_add_pending_pkt_size(spwf_id, added + to_add);
added += to_add;
}
/* force call of (external) callback */
_call_callback();
/* set that data is pending */
_set_pending_data(spwf_id);
}
/*
* Handling oob ("+WIND:55:Pending Data")
*/
void SPWFSAxx::_packet_handler_th(void)
{
int internal_id, spwf_id;
int amount;
/* parse out the socket id & amount */
if (!(_parser.recv(SPWFXX_RECV_PENDING_DATA, &spwf_id, &amount) && _recv_delim_lf())) {
#ifndef NDEBUG
error("\r\nSPWFSAxx::%s failed!\r\n", __func__);
#endif
return;
}
debug_if(_dbg_on, "AT^ +WIND:55:Pending Data:%d:%d\r\n", spwf_id, amount);
/* check for the module to report a valid id */
MBED_ASSERT(((unsigned int)spwf_id) < ((unsigned int)SPWFSA_SOCKET_COUNT));
/* set that there is pending data for socket */
/* NOTE: it seems as if asynchronous indications might report not up-to-date data length values
* therefore we just record the socket id without considering the `amount` of data reported!
*/
internal_id = _associated_interface.get_internal_id(spwf_id);
if(internal_id != SPWFSA_SOCKET_COUNT) {
debug_if(_dbg_on, "AT^ +WIND:55:Pending Data:%d:%d - #2\r\n", spwf_id, amount);
_add_pending_packet_sz(spwf_id, amount);
MBED_ASSERT(_get_pending_pkt_size(spwf_id) != 0);
} else {
debug_if(_dbg_on, "\r\nSPWFSAxx::%s got invalid id %d\r\n", __func__, spwf_id);
}
}
void SPWFSAxx::_network_lost_handler_bh(void)
{
if(!_network_lost_flag) return;
_network_lost_flag = false;
{
bool were_connected;
BlockExecuter netsock_wa_obj(Callback<void()>(this, &SPWFSAxx::_unblock_and_callback),
Callback<void()>(this, &SPWFSAxx::_block_event_callback)); /* do not call (external) callback in IRQ context as long as network is lost */
Timer timer;
timer.start();
_parser.set_timeout(SPWF_NETLOST_TIMEOUT);
were_connected = isConnected();
_associated_interface._connected_to_network = false;
if(were_connected) {
unsigned int n1, n2, n3, n4;
while(true) {
if (timer.read_ms() > SPWF_CONNECT_TIMEOUT) {
debug_if(_dbg_on, "\r\nSPWFSAxx::_network_lost_handler_bh() #%d\r\n", __LINE__);
disconnect();
goto nlh_get_out;
}
if((_parser.recv(SPWFXX_RECV_WIFI_UP, &n1, &n2, &n3, &n4)) && _recv_delim_lf()) {
debug_if(_dbg_on, "Re-connected (%u.%u.%u.%u)!\r\n", n1, n2, n3, n4);
_associated_interface._connected_to_network = true;
goto nlh_get_out;
}
}
} else {
debug_if(_dbg_on, "Leaving SPWFSAxx::_network_lost_handler_bh\r\n");
goto nlh_get_out;
}
nlh_get_out:
debug_if(_dbg_on, "Getting out of SPWFSAxx::_network_lost_handler_bh\r\n");
_parser.set_timeout(_timeout);
return;
}
}
void SPWFSAxx::_recover_from_hard_faults(void) {
disconnect();
_associated_interface.inner_constructor();
_free_all_packets();
empty_rx_buffer();
/* force call of (external) callback */
_call_callback();
}
/*
* Handling oob ("+WIND:8:Hard Fault")
*/
void SPWFSAxx::_hard_fault_handler(void)
{
_parser.set_timeout(SPWF_RECV_TIMEOUT);
if(_parser.recv("%[^\n]\n", _msg_buffer) && _recv_delim_lf()) {}
#ifndef NDEBUG
error("\r\nSPWFSAXX hard fault error:\r\n%s\r\n", _msg_buffer);
#else // NDEBUG
debug("\r\nSPWFSAXX hard fault error:\r\n%s\r\n", _msg_buffer);
// This is most likely the best we can do to recover from this module hard fault
_parser.set_timeout(SPWF_HF_TIMEOUT);
_recover_from_hard_faults();
_parser.set_timeout(_timeout);
#endif // NDEBUG
/* force call of (external) callback */
_call_callback();
}
/*
* Handling oob ("+WIND:5:WiFi Hardware Failure")
*/
void SPWFSAxx::_wifi_hwfault_handler(void)
{
unsigned int failure_nr;
/* parse out the socket id & amount */
_parser.recv(":%u\n", &failure_nr);
_recv_delim_lf();
#ifndef NDEBUG
error("\r\nSPWFSAXX WiFi HW fault error: %u\r\n", failure_nr);
#else // NDEBUG
debug("\r\nSPWFSAXX WiFi HW fault error: %u\r\n", failure_nr);
// This is most likely the best we can do to recover from this module hard fault
_parser.set_timeout(SPWF_HF_TIMEOUT);
_recover_from_hard_faults();
_parser.set_timeout(_timeout);
#endif // NDEBUG
/* force call of (external) callback */
_call_callback();
}
/*
* Handling oob ("+WIND:58:Socket Closed")
* when server closes a client connection
*
* NOTE: When a socket client receives an indication about socket server gone (only for TCP sockets, WIND:58),
* the socket connection is NOT automatically closed!
*/
void SPWFSAxx::_server_gone_handler(void)
{
int spwf_id, internal_id;
if(!(_parser.recv(SPWFXX_RECV_SOCKET_CLOSED, &spwf_id) && _recv_delim_lf())) {