1 | /*
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2 | Copyright (C) 2015 Embedded and Real-Time Systems Laboratory
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3 | Graduate School of Information Science, Nagoya Univ., JAPAN
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4 |
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5 | This library is free software; you can redistribute it and/or
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6 | modify it under the terms of the GNU Lesser General Public
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7 | License as published by the Free Software Foundation; either
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8 | version 2.1 of the License, or (at your option) any later version.
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9 | This library is distributed in the hope that it will be useful,
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10 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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12 | Lesser General Public License for more details.
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13 | You should have received a copy of the GNU Lesser General Public
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14 | License along with this library; if not, write to the Free Software
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15 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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16 | */
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17 |
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18 | #ifndef _CLIENT_ESP8366_H_
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19 | #define _CLIENT_ESP8366_H_
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20 | #include "Print.h"
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21 | #include "Stream.h"
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22 | #include "IPAddress.h"
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23 | #include "ESP8266.h"
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24 |
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25 | #define ESP8266CLIENT_BUFFER_LEN 512
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26 |
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27 | class ESP8266Client: public Client, public ESP8266 {
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28 |
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29 | public:
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30 | /*
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31 | * @retval 0 : faild
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32 | * @retval 1 : success
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33 | */
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34 | int connect(IPAddress ip, uint16_t port) {
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35 | String ip_str;
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36 | bufferlen= 0;
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37 | ip_str.concat(ip[0]);
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38 | ip_str.concat(".");
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39 | ip_str.concat(ip[1]);
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40 | ip_str.concat(".");
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41 | ip_str.concat(ip[2]);
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42 | ip_str.concat(".");
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43 | ip_str.concat(ip[3]);
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44 | _connected = (createTCP(ip_str, port))? 1 : 0;
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45 | return (int)_connected;
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46 | };
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47 |
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48 | int connect(const char *host, uint16_t port) {
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49 | String ip_str(host);
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50 | bufferlen= 0;
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51 | _connected = (createTCP(ip_str, port))? 1 : 0;
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52 | return (int)_connected;
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53 | };
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54 |
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55 | size_t write(uint8_t data) {
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56 | if(send(&data, 1)){
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57 | return 1;
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58 | }
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59 | else {
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60 | return 0;
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61 | }
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62 | };
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63 | size_t write(const uint8_t *buf, size_t size){
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64 | if(send(buf, size)){
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65 | return size;
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66 | }
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67 | else {
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68 | return 0;
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69 | }
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70 | };
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71 | int available(){
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72 | if (bufferlen > 0) {
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73 | return 1;
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74 | }
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75 | if (dataAvailable()) {
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76 | bufferlen = recv(buffer, ESP8266CLIENT_BUFFER_LEN);
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77 | pbuffer = buffer;
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78 | //In case of that data is available but it is not valid data(not +IPD,...),
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79 | //connection is closed by server.(send "CLOSED")
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80 | if(bufferlen == 0){
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81 | _connected = 0;
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82 | releaseTCP();
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83 | return 0;
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84 | }
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85 | return 1;
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86 | }
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87 | return 0;
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88 | };
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89 | int read(){
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90 | if (bufferlen == 0) {
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91 | bufferlen = recv(buffer, ESP8266CLIENT_BUFFER_LEN);
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92 | pbuffer = buffer;
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93 | }
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94 | if (bufferlen > 0){
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95 | bufferlen--;
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96 | return *pbuffer++;
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97 | }
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98 | else {
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99 | return (int)-1;
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100 | }
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101 | };
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102 | int read(uint8_t *buf, size_t size){return recv(buf, size);};
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103 | int peek(){return 1;};
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104 | void flush(){};
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105 | void stop(){releaseTCP();};
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106 | uint8_t connected(){return _connected;};
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107 | operator bool(){return (bool)(_connected == 1);};
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108 | private:
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109 | uint8_t _connected;
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110 | uint8_t buffer[ESP8266CLIENT_BUFFER_LEN];
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111 | uint8_t bufferlen;
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112 | uint8_t *pbuffer;
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113 | };
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114 |
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115 | #endif /* _CLIENT_ESP8366_H_ */
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