mayuresh bharmoria
/
mbed-os-example-wifi
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Diff: wifi-x-nucleo-idw01m1/SPWFSAxx.cpp
- Revision:
- 0:8f8e8f3cbd1c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/wifi-x-nucleo-idw01m1/SPWFSAxx.cpp Thu Jun 21 17:50:21 2018 +0000
@@ -0,0 +1,1206 @@
+/* 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)
+{
+ /*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) {
+ 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__);
+ }
+}
+
+/* Note: in case of error blocking has been (tried to be) lifted */
+bool SPWFSAxx::_winds_off(void) {
+ 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__);
+ _winds_on();
+ return false;
+ }
+
+ 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__);
+ _winds_on();
+ return false;
+ }
+
+ 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__);
+ _winds_on();
+ return false;
+ }
+
+ 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!", __func__, __LINE__);
+#else // NDEBUG
+ debug("%s(%d): Out of memory!", __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: call (external) callback only while not receiving
+ */
+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)); /* call (external) callback only while not receiving */
+ 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())) {
+#ifndef NDEBUG
+ error("\r\nSPWFSAxx::%s failed!\r\n", __func__);
+#endif
+ goto _get_out;
+ }
+
+ debug_if(_dbg_on, "AT^ +WIND:58:Socket Closed:%d\r\n", spwf_id);
+
+ /* check for the module to report a valid id */
+ MBED_ASSERT(((unsigned int)spwf_id) < ((unsigned int)SPWFSA_SOCKET_COUNT));
+
+ /* only set `server_gone`
+ * user still can receive data & must still explicitly close the socket
+ */
+ internal_id = _associated_interface.get_internal_id(spwf_id);
+ if(internal_id != SPWFSA_SOCKET_COUNT) {
+ _associated_interface._ids[internal_id].server_gone = true;
+ }
+
+_get_out:
+ /* force call of (external) callback */
+ _call_callback();
+}
+
+#if MBED_CONF_IDW0XX1_EXPANSION_BOARD == IDW04A1
+/*
+ * Handling oob (currently only for "+WIND:24:WiFi Up::")
+ */
+void SPWFSAxx::_skip_oob(void)
+{
+ if(_parser.recv("%[^\n]\n", _msg_buffer) && _recv_delim_lf()) {
+ debug_if(_dbg_on, "AT^ +WIND:24:WiFi Up::%s\r\n", _msg_buffer);
+ } else {
+ debug_if(_dbg_on, "\r\nSPWF> Invalid string in SPWFSAxx::_skip_oob (%d)\r\n", __LINE__);
+ }
+}
+#endif
+
+void SPWFSAxx::setTimeout(uint32_t timeout_ms)
+{
+ _timeout = timeout_ms;
+ _parser.set_timeout(timeout_ms);
+}
+
+void SPWFSAxx::attach(Callback<void()> func)
+{
+ _callback_func = func; /* call (external) callback only while not receiving */
+}
+
+/**
+ * Recv Function
+ */
+int32_t SPWFSAxx::recv(int spwf_id, void *data, uint32_t amount, bool datagram)
+{
+ BlockExecuter bh_handler(Callback<void()>(this, &SPWFSAxx::_execute_bottom_halves));
+
+ while (true) {
+ /* check if any packets are ready for us */
+ for (struct packet **p = &_packets; *p; p = &(*p)->next) {
+ if ((*p)->id == spwf_id) {
+ debug_if(_dbg_on, "\r\nRead done on ID %d and length of packet is %d\r\n",spwf_id,(*p)->len);
+ struct packet *q = *p;
+
+ MBED_ASSERT(q->len > 0);
+
+ if(datagram) { // UDP => always remove pkt size
+ // will always consume a whole pending size
+ uint32_t ret;
+
+ debug_if(_dbg_on, "%s():\t\t\t%d:%d (datagram)\r\n", __func__, spwf_id, q->len);
+
+ ret = (amount < q->len) ? amount : q->len;
+ memcpy(data, q+1, ret);
+
+ if (_packets_end == &(*p)->next) {
+ _packets_end = p;
+ }
+ *p = (*p)->next;
+ free(q);
+
+ return ret;
+ } else { // TCP
+ if (q->len <= amount) { // return and remove full packet
+ memcpy(data, q+1, q->len);
+
+ if (_packets_end == &(*p)->next) {
+ _packets_end = p;
+ }
+ *p = (*p)->next;
+ uint32_t len = q->len;
+ free(q);
+
+ return len;
+ } else { // `q->len > amount`, return only partial packet
+ if(amount > 0) {
+ memcpy(data, q+1, amount);
+ q->len -= amount;
+ memmove(q+1, (uint8_t*)(q+1) + amount, q->len);
+ }
+
+ return amount;
+ }
+ }
+ }
+ }
+
+ /* check for pending data on module */
+ {
+ int len;
+
+ len = _read_in_pkt(spwf_id, false);
+ if(len <= 0) { /* SPWFXX error or no more data to be read */
+ return -1;
+ }
+ }
+ }
+}
+
+void SPWFSAxx::_process_winds(void) {
+ do {
+ if(readable()) {
+#if MBED_CONF_IDW0XX1_EXPANSION_BOARD == IDW01M1
+ if(_recv_delim_cr_lf()) // betzw: only necessary for `IDW01M1`
+#endif
+ {
+ if(_parser.process_oob()) {
+ /* something to do? */;
+ } else {
+ debug_if(_dbg_on, "%s():\t\tNo oob's found!\r\n", __func__);
+ return; // no oob's found
+ }
+ }
+#if MBED_CONF_IDW0XX1_EXPANSION_BOARD == IDW01M1
+ else {
+ debug_if(_dbg_on, "%s():\t\tNo delimiters found!\r\n", __func__);
+ return; // no leading delimiters
+ }
+#endif
+ } else {
+ return; // no more data in buffer
+ }
+ } while(true);
+}
+
+/* Note: returns
+ * '>=0' in case of success, amount of read in data (in bytes)
+ * 'SPWFXX_ERR_OOM' in case of "out of memory"
+ * 'SPWFXX_ERR_READ' in case of other `_read_in_packet()` error
+ * 'SPWFXX_ERR_LEN' in case of `_read_len()` error
+ */
+int SPWFSAxx::_read_in_pkt(int spwf_id, bool close) {
+ int pending;
+ uint32_t wind_pending;
+ BlockExecuter netsock_wa_obj(Callback<void()>(this, &SPWFSAxx::_unblock_event_callback),
+ Callback<void()>(this, &SPWFSAxx::_block_event_callback)); /* call (external) callback only while not receiving */
+
+ _process_winds(); // perform async indication handling
+
+ if(close) { // read in all data
+ wind_pending = pending = _read_len(spwf_id); // triggers also async indication handling!
+
+ /* reset pending data sizes */
+ _reset_pending_pkt_sizes(spwf_id);
+ /* set new entry for pending size */
+ _add_pending_pkt_size(spwf_id, (uint32_t)pending);
+ } else { // only read in already notified data
+ pending = wind_pending = _get_pending_pkt_size(spwf_id);
+ if(pending == 0) { // special handling for no packets pending (to WORK AROUND missing WINDs)!
+ pending = _read_len(spwf_id); // triggers also async indication handling!
+
+ if(pending != 0) {
+ _process_winds(); // perform async indication handling (again)
+ wind_pending = _get_pending_pkt_size(spwf_id);
+
+ if(wind_pending == 0) {
+ /* betzw - WORK AROUND module FW issues: set new entry for pending size */
+ debug_if(_dbg_on, "%s():\t\tAdd packet w/o WIND (%d)!\r\n", __func__, pending);
+ _add_pending_packet_sz(spwf_id, (uint32_t)pending);
+
+ wind_pending = pending = _get_pending_pkt_size(spwf_id);
+ MBED_ASSERT(wind_pending > 0);
+ }
+ }
+ }
+ }
+
+ if((pending > 0) && (wind_pending > 0)) {
+ if(pending <= (int)wind_pending) {
+ _clear_pending_data(spwf_id);
+ }
+
+ int ret = _read_in_packet(spwf_id, wind_pending);
+ MBED_ASSERT(ret != 0);
+ if(ret < 0) { /* "out of memory" or `_read_in_packet()` error */
+ /* we do not know if data is still pending at this point
+ but leaving the pending data bit set might lead to an endless loop */
+ _clear_pending_data(spwf_id);
+ /* also reset pending data sizes */
+ _reset_pending_pkt_sizes(spwf_id);
+
+ return ret;
+ }
+ } else if(pending < 0) { /* 'SPWFXX_ERR_LEN' error */
+ MBED_ASSERT(pending == SPWFXX_ERR_LEN);
+ /* we do not know if data is still pending at this point
+ but leaving the pending data bit set might lead to an endless loop */
+ _clear_pending_data(spwf_id);
+ /* also reset pending data sizes */
+ _reset_pending_pkt_sizes(spwf_id);
+
+ return pending;
+ } else if(pending == 0) {
+ MBED_ASSERT(wind_pending == 0);
+ _clear_pending_data(spwf_id);
+ } else if(wind_pending == 0) { // `pending > 0`
+ /* betzw: should never happen! */
+ MBED_ASSERT(false);
+ }
+
+ return (int)wind_pending;
+}