This is boring
SPWFSA01.cpp
- Committer:
- mridup
- Date:
- 2016-08-19
- Revision:
- 14:868b0fd4e84a
- Parent:
- 13:f21e4e73bbb6
- Child:
- 15:e56c9e744ab6
File content as of revision 14:868b0fd4e84a:
/* SPWFInterface Example * 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 "SPWFSA01.h" #include "mbed_debug.h" #define SPWFSA01_CONNECT_TIMEOUT 15000 #define SPWFSA01_SEND_TIMEOUT 500 #define SPWFSA01_RECV_TIMEOUT 1500//some commands like AT&F/W takes some time to get the result back! #define SPWFSA01_MISC_TIMEOUT 500 SPWFSA01::SPWFSA01(PinName tx, PinName rx, bool debug) : _serial(tx, rx, 1024), _parser(_serial), _wakeup(D14, PIN_INPUT, PullNone, 0), _reset(D15, PIN_INPUT, PullNone, 1), //PC_12->D15, PC_8->D14 (re-wires needed in-case used, currently not used) dbg_on(debug) //Pin PC_8 is wakeup pin //Pin PA_12 is reset pin { _serial.baud(115200); _reset.output(); _wakeup.output(); _parser.debugOn(debug); } bool SPWFSA01::startup(int mode) { setTimeout(SPWFSA01_RECV_TIMEOUT); /*Test module before reset*/ waitSPWFReady(); /*Reset module*/ reset(); /*set local echo to 0*/ if(!(_parser.send("AT+S.SCFG=localecho1,%d\r", 0) && _parser.recv("OK"))) { debug_if(dbg_on, "SPWF> error local echo set\r\n"); return false; } /*reset factory settings*/ if(!(_parser.send("AT&F") && _parser.recv("OK"))) { debug_if(dbg_on, "SPWF> error AT&F\r\n"); return false; } /*set idle mode (0->idle, 1->STA,3->miniAP, 2->IBSS)*/ if(!(_parser.send("AT+S.SCFG=wifi_mode,%d\r", mode) && _parser.recv("OK"))) { debug_if(dbg_on, "SPWF> error wifi mode set\r\n"); return false; } /* save current setting in flash */ if(!(_parser.send("AT&W") && _parser.recv("OK"))) { debug_if(dbg_on, "SPWF> error AT&W\r\n"); return false; } /*reset again and send AT command and check for result (AT->OK)*/ reset(); return true; } bool SPWFSA01::hw_reset(void) { /* reset the pin PC12 */ _reset.write(0); wait_ms(200); _reset.write(1); wait_ms(100); return 1; } bool SPWFSA01::reset(void) { if(!_parser.send("AT+CFUN=1")) return false; while(1) { if (_parser.recv("+WIND:32:WiFi Hardware Started\r")) { return true; } } } void SPWFSA01::waitSPWFReady(void) { //wait_ms(200); while(1) if(_parser.send("AT") && _parser.recv("OK")) //till we get OK from AT command //printf("\r\nwaiting for reset to complete..\n"); return; } /* Security Mode None = 0, WEP = 1, WPA_Personal = 2, */ bool SPWFSA01::connect(const char *ap, const char *passPhrase, int securityMode) { uint32_t n1, n2, n3, n4; //AT+S.SCFG=wifi_wpa_psk_text,%s\r if(!(_parser.send("AT+S.SCFG=wifi_wpa_psk_text,%s", passPhrase) && _parser.recv("OK"))) { debug_if(dbg_on, "SPWF> error pass set\r\n"); return false; } //AT+S.SSIDTXT=%s\r if(!(_parser.send("AT+S.SSIDTXT=%s", ap) && _parser.recv("OK"))) { debug_if(dbg_on, "SPWF> error ssid set\r\n"); return false; } //AT+S.SCFG=wifi_priv_mode,%d\r if(!(_parser.send("AT+S.SCFG=wifi_priv_mode,%d", securityMode) && _parser.recv("OK"))) { debug_if(dbg_on, "SPWF> error security mode set\r\n"); return false; } //"AT+S.SCFG=wifi_mode,%d\r" /*set idle mode (0->idle, 1->STA,3->miniAP, 2->IBSS)*/ if(!(_parser.send("AT+S.SCFG=wifi_mode,%d\r", 1) && _parser.recv("OK"))) { debug_if(dbg_on, "SPWF> error wifi mode set\r\n"); return false; } //AT&W /* save current setting in flash */ if(!(_parser.send("AT&W") && _parser.recv("OK"))) { debug_if(dbg_on, "SPWF> error AT&W\r\n"); return false; } //reset module reset(); while(1) if((_parser.recv("+WIND:24:WiFi Up:%u.%u.%u.%u\r",&n1, &n2, &n3, &n4))) { break; } return true; } bool SPWFSA01::disconnect(void) { //"AT+S.SCFG=wifi_mode,%d\r" /*set idle mode (0->idle, 1->STA,3->miniAP, 2->IBSS)*/ if(!(_parser.send("AT+S.SCFG=wifi_mode,%d\r", 0) && _parser.recv("OK"))) { debug_if(dbg_on, "SPWF> error wifi mode set\r\n"); return false; } //AT&W /* save current setting in flash */ if(!(_parser.send("AT&W") && _parser.recv("OK"))) { debug_if(dbg_on, "SPWF> error AT&W\r\n"); return false; } //reset module reset(); return true; } bool SPWFSA01::dhcp(int mode) { //only 3 valid modes //0->off(ip_addr must be set by user), 1->on(auto set by AP), 2->on&customize(miniAP ip_addr can be set by user) if(mode < 0 || mode > 2) { return false; } return _parser.send("AT+S.SCFG=ip_use_dhcp,%d\r", mode) && _parser.recv("OK"); } const char *SPWFSA01::getIPAddress(void) { uint32_t n1, n2, n3, n4; if (!(_parser.send("AT+S.STS=ip_ipaddr") && _parser.recv("# ip_ipaddr = %u.%u.%u.%u", &n1, &n2, &n3, &n4) && _parser.recv("OK"))) { debug_if(dbg_on, "SPWF> getIPAddress error\r\n"); return 0; } sprintf((char*)_ip_buffer,"%u.%u.%u.%u", n1, n2, n3, n4); return _ip_buffer; } const char *SPWFSA01::getMACAddress(void) { uint32_t n1, n2, n3, n4, n5, n6; if (!(_parser.send("AT+S.GCFG=nv_wifi_macaddr") && _parser.recv("# nv_wifi_macaddr = %x:%x:%x:%x:%x:%x", &n1, &n2, &n3, &n4, &n5, &n6) && _parser.recv("OK"))) { debug_if(dbg_on, "SPWF> getMACAddress error\r\n"); return 0; } sprintf((char*)_mac_buffer,"%02X:%02X:%02X:%02X:%02X:%02X", n1, n2, n3, n4, n5, n6); return _mac_buffer; } bool SPWFSA01::isConnected(void) { return getIPAddress() != 0; } bool SPWFSA01::open(const char *type, int* id, const char* addr, int port) { Timer timer; timer.start(); if(!_parser.send("AT+S.SOCKON=%s,%d,%s,ind", addr, port, type)) { debug_if(dbg_on, "SPWF> error opening socket\r\n"); return false; } while(1) { if( _parser.recv(" ID: %d", id) && _parser.recv("OK")) break; if (timer.read_ms() > SPWFSA01_CONNECT_TIMEOUT) { return false; } //TODO:implement time-out functionality in case of no response //if(timeout) return false; //TODO: deal with errors like "ERROR: Failed to resolve name" //TODO: deal with errors like "ERROR: Data mode not available" } return true; } bool SPWFSA01::send(int id, const void *data, uint32_t amount) { char _buf[18]; setTimeout(SPWFSA01_SEND_TIMEOUT); sprintf((char*)_buf,"AT+S.SOCKW=%d,%d\r", id, amount); //May take a second try if device is busy for (unsigned i = 0; i < 2; i++) { if (_parser.write((char*)_buf, strlen(_buf)) >=0 && _parser.write((char*)data, (int)amount) >= 0 && _parser.recv("OK")) { return true; } } return false; } int32_t SPWFSA01::recv(int id, void *data, uint32_t amount) { uint32_t recv_amount, read_amt; int recv_id; char _buf[18]; if (!(_parser.recv("+WIND:55:Pending Data:%d:%u", &recv_id, &recv_amount) && recv_id == id //&& _parser.send("AT+S.SOCKQ=%d", id)//send a query (will be required for secure sockets) //&& _parser.recv(" DATALEN: %u", &recv_amount) //&& _parser.recv("OK") && recv_amount <= amount)) { return -1;//Block call } //&& sprintf((char*)_buf,"AT+S.SOCKR=%d,%d\r", id, recv_amount) //&& _parser.write((char*)_buf, strlen(_buf)) if (!_parser.send("AT+S.SOCKR=%d,%d", id, recv_amount)) { //if error, resend SOCKR again to flush the socket //This should prevent Error: Pending Data errors or the next WIND showing this pending data sprintf((char*)_buf,"AT+S.SOCKR=%d,%d\r", id, recv_amount); _parser.write((char*)_buf, strlen(_buf)); debug_if(dbg_on, "SPWF> read send SOCKR error\r\n"); return -2;//return NSAPI_ERROR_DEVICE_ERROR } read_amt = _parser.read((char*)data, recv_amount); if (read_amt<=0) { debug_if(dbg_on, "SPWF> read recv SOCKR error: read_amt = %d\r\n", read_amt); return -2;//return NSAPI_ERROR_DEVICE_ERROR } //Sometimes OK is not received because _parser.read() reads in ERROR statement. "E.g. ERROR: Command not found". //ERROR statement hence takes up space in recv_amount and hence OK is not read as a result. if (!_parser.recv("OK")) { debug_if(dbg_on, "SPWF> read recv SOCKR OK error\r\n"); if(std::strncmp("\r\nERROR: ", (const char* )data, 9)==0) { debug_if(dbg_on, "SPWF> Module Error Reply\r\n"); return -2; } /*int i = 0; char * buf = (char*)data; for ( ; i < recv_amount; i++) { debug_if(dbg_on, ("%d = %c\r\n", i, buf[i]); }*/ return -2;//return NSAPI_ERROR_DEVICE_ERROR } return recv_amount; } bool SPWFSA01::close(int id) { //May take a second try if device is busy or error is returned for (unsigned i = 0; i < 2; i++) { if (_parser.send("AT+S.SOCKC=%d", id) && _parser.recv("OK")) { return true; } else { if(_parser.recv("ERROR: Pending data")) debug_if(dbg_on, "SPWF> ERROR!!!!\r\n"); return false; } //TODO: Deal with "ERROR: Pending data" (Closing a socket with pending data) } return false; } void SPWFSA01::setTimeout(uint32_t timeout_ms) { _parser.setTimeout(timeout_ms); } bool SPWFSA01::readable() { return _serial.readable(); } bool SPWFSA01::writeable() { return _serial.writeable(); }