【跃昉科技BF2开发板试用体验】四：继续学习+阶段小结

本文来源电子发烧友社区，作者：FrankSmith， 帖子地址：https://bbs.elecfans.com/jishu_2296120_1_1.html

想进行tcpip通讯，首先得连接网络。当然了，这个板子没有以太网接口，得利用板子的WiFi接口了。这个项目提供了一些WiFi的功能，予以一一尝试。

第一个指令是（wifi_scan）。

以下指令的输入以及信息的输出均在串口助手sscom中进行。

1. wifi_scan
2. ------>>>>>> Scan CMD
3. # [WIFI] [IND] SCAN Done
4. wifi_mgmr_scan_complete_callback: scan complete
5. [APP] [EVT] SCAN Done 69207
6. cached scan list
7. ****************************************************************************************************
8. index[00]: empty
9. index[01]: empty
10. index[02]: empty
11. index[03]: empty
12. index[04]: empty
13. index[05]: empty
14. index[06]: empty
15. index[07]: empty
16. index[08]: empty
17. index[09]: empty
18. index[10]: empty
19. index[11]: empty
20. index[12]: empty
21. index[13]: empty
22. index[14]: empty
23. index[15]: empty
24. index[16]: empty
25. index[17]: empty
26. index[18]: empty
27. index[19]: empty
28. index[20]: empty
29. index[21]: empty
30. index[22]: empty
31. index[23]: empty
32. index[24]: empty
33. index[25]: empty
34. index[26]: empty
35. index[27]: empty
36. index[28]: empty
37. index[29]: empty
38. index[30]: empty
39. index[31]: channel 13, bssid 16:E9:B2:91:AD:E7, rssi -98, ppm abs:rel 0 : 0, auth WPA2-PSK/WPA-PSK, cipher: AES, SSID CMCC-uWN6-2
40. index[32]: channel 13, bssid 14:E9:B2:91:AD:E7, rssi -87, ppm abs:rel 0 : 0, auth WPA2-PSK/WPA-PSK, cipher: AES, SSID CMCC-uWN6
41. index[33]: channel 11, bssid 64:6E:97:C9:5A:D7, rssi -98, ppm abs:rel 0 : 0, auth WPA2-PSK/WPA-PSK, cipher: AES, SSID 3205
42. index[34]: channel 11, bssid EC:17:2F:68:27:D4, rssi -84, ppm abs:rel 5 : 5, auth WPA2-PSK/WPA-PSK, cipher: AES, SSID TP-LINK_6827D4
43. index[35]: channel 11, bssid 70:85:40:2B:AB:B7, rssi -79, ppm abs:rel 2 : 2, auth WPA2-PSK/WPA-PSK, cipher: TKIP/AES, SSID 468
44. index[36]: channel 10, bssid 74:7D:24:48:97:62, rssi -98, ppm abs:rel 0 : 0, auth WPA2-PSK/WPA-PSK, cipher: TKIP/AES, SSID @PHICOMM_60
45. index[37]: channel 10, bssid 92:3F:7B:61:27:AF, rssi -85, ppm abs:rel 2 : 2, auth WPA2-PSK/WPA-PSK, cipher: TKIP/AES, SSID iTV-iaLX
46. index[38]: channel 11, bssid D0:76:E7:EF:03:71, rssi -98, ppm abs:rel10 :10, auth WPA2-PSK/WPA-PSK, cipher: AES, SSID ChinaNet-sefN
47. index[39]: channel 10, bssid 68:DB:54:DF:35:E2, rssi -98, ppm abs:rel 0 : 0, auth WPA2-PSK/WPA-PSK, cipher: TKIP/AES, SSID 钂嬪
48. index[40]: channel 10, bssid 30:3F:7B:61:27:AE, rssi -98, ppm abs:rel 4 : 4, auth WPA2-PSK/WPA-PSK, cipher: TKIP/AES, SSID ChinaNet-iaLX
49. index[41]: channel 10, bssid 30:5F:77:80:93:DE, rssi -85, ppm abs:rel 0 : 0, auth WPA2-PSK, cipher: AES, SSID 鍖椾含鐑ら腑
50. index[42]: channel 08, bssid 38:21:87:41:89:1D, rssi -98, ppm abs:rel35 :35, auth WPA2-PSK, cipher: AES, SSID midea_ac_0404
51. index[43]: channel 08, bssid 24:8B:E0:5C:E0:D9, rssi -96, ppm abs:rel 7 : 7, auth WPA2-PSK/WPA-PSK, cipher: TKIP/AES, SSID liao150829
52. index[44]: channel 10, bssid 50:D2:F5:74:BA:C2, rssi -61, ppm abs:rel 0 : 0, auth WPA2-PSK/WPA-PSK, cipher: TKIP/AES, SSID CYMY
53. index[45]: channel 05, bssid 70:85:40:2B:AB:48, rssi -79, ppm abs:rel 0 : 0, auth WPA2-PSK/WPA-PSK, cipher: TKIP/AES, SSID 168
54. index[46]: channel 05, bssid 70:85:40:2B:AB:FC, rssi -73, ppm abs:rel 2 : 2, auth WPA2-PSK/WPA-PSK, cipher: TKIP/AES, SSID 288
55. index[47]: channel 03, bssid 2C:B2:1A:D0:3B:82, rssi -97, ppm abs:rel 0 : 0, auth WPA2-PSK/WPA-PSK, cipher: TKIP/AES, SSID fei
56. index[48]: channel 03, bssid 70:85:40:2B:AB:45, rssi -52, ppm abs:rel 5 : 5, auth WPA2-PSK/WPA-PSK, cipher: TKIP/AES, SSID 368
57. index[49]: channel 03, bssid 70:85:40:2B:AB:EF, rssi -43, ppm abs:rel13 :13, auth WPA2-PSK/WPA-PSK, cipher: TKIP/AES, SSID 268
58. ----------------------------------------------------------------------------------------------------
59. proc_hellow_entry: RISC-V rv32imafc.gj_lf686_demo_wifi

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找到一个可以连接的无线路由器，ssid=268

使用这个项目提供的命令：(wifi_sta_connect)

1. wifi_sta_connect 268 07342596999
2. wifi_sta_connect 268 07342596999
3. ----- BUG FIXME? NOT do STA enable again
4. [WF] MM_ADD_IF_REQ Sending: STA
5. 歵d_start idx=0
6. [WF] MM_ADD_IF_REQ Done
7. [WF] vif_index from LAMC is 0
8. [WF][SM] Entering idle state
9. [WF][SM] Action Connect
10. ssid 268
11. ssid len 3
12. psk 07342596999
13. psk len 11
14. pmk
15. pmk len 0
16. channel band 0
17. channel freq 0
18. mac 00:00:00:00:00:00
19. dhcp status: true
20. [WF][SM] State Action ###idle### --->>> ###connecting###
21. connecting using vif_idx 0
22. ===start sm_get_bss_params===
23. bssid[0] = 0xffff
24. bssid[1] = 0xffff
25. bssid[2] = 0xffff
26. search ssid = 268
27. result ssid index = -1
28. ===end sm_get_bss_params===
29. [WF][SM] Entering connecting state
30. # [APP] [EVT] Connecting 707891
31. Probe Response
32. timestamp = 0x30ef47b10
33. Probe Response
34. timestamp = 0x30ef84cbd
35. Probe Response
36. timestamp = 0x30efc2998
37. Probe Response
38. timestamp = 0x30f03c5d3
39. [ 710128][[32mINFO[0m: lf_adc.c: 260] offset = 2108
40. proc_hellow_entry: RISC-V rv32imafc.gj_lf686_demo_wifi
41. ===start sm_get_bss_params===
42. bssid[0] = 0xffff
43. bssid[1] = 0xffff
44. bssid[2] = 0xffff
45. search ssid = 268
46. result ssid index = 0
47. ===end sm_get_bss_params===
48. wpa2/wpa3 pairwise ccmp:1,tkip:0,wep104:0,wep:40:0
49. wpa2/wpa3 group ccmp:0,tkip:1,wep104:0,wep:40:0
50. wpa2/wpa3 is_pmf_required:0
51. AP Security mode: wep:0,wpa:1,wpa2:1,wpa3:0
52. Probe Response
53. timestamp = 0x30f26308d
54. wpa2/wpa3 pairwise ccmp:1,tkip:0,wep104:0,wep:40:0
55. wpa2/wpa3 group ccmp:0,tkip:1,wep104:0,wep:40:0
56. wpa2/wpa3 is_pmf_required:0
57. AP Security mode: wep:0,wpa:1,wpa2:1,wpa3:0
58. wpa2/wpa3 pairwise ccmp:1,tkip:0,wep104:0,wep:40:0
59. wpa2/wpa3 group ccmp:0,tkip:1,wep104:0,wep:40:0
60. wpa2/wpa3 is_pmf_required:0
61. AP Security mode: wep:0,wpa:1,wpa2:1,wpa3:0
62. ------ 247 set default key 0x42018c08, key ptr 0x00000000
63. [APP] [EVT] SCAN On Join 711659
64. set key:sta_idx:0, inst_nbr:0, key_idx:0,cipher_suite:2,key_len:16
65. set key:sta_idx:255, inst_nbr:0, key_idx:1,cipher_suite:1,key_len:32
66. ind ix 0x4201eddc, chan_ctxt is 0x420183f4
67. [RX] Connection Status
68. [RX] status_code 0
69. [RX] connect result: sm connect ind ok
70. [RX] MAC 70:85:40:2B:AB:EF
71. [RX] vif_idx 0
72. [RX] ap_idx 0
73. [RX] ch_idx 0
74. [RX] qos 1
75. [RX] acm 0
76. [RX] assoc_req_ie_len 80
77. [RX] assoc_rsp_ie_len 172
78. [RX] aid 0
79. [RX] band 0
80. [RX] center_freq 2422
81. [RX] width 0
82. [RX] center_freq1 2422
83. [RX] center_freq2 0
84. [WF][SM] Exiting connecting state
85. [WF][SM] State Action ###connecting### --->>> ###wifiConnected_ipObtaining###
86. [WF][SM] Entering wifiConnected_ipObtaining state
87. [WF][SM] DHCP Starting...0x42019e24
88. [APP] [EVT] connected 711685
89. -----------------> AABA Request:
90. A-MSDU: Not Permitted
91. Block Ack Policy: Immediate Block Ack
92. TID: 0
93. Number of Buffers: 64
94. -----------------> AABA Response:
95. A-MSDU: Not Permitted
96. Block Ack Policy: Immediate Block Ack
97. TID: 0
98. Number of Buffers: 8
99. [lwip] netif status callback
100. IP: 192.168.88.7
101. MK: 255.255.255.0
102. GW: 192.168.88.254
103. [WF][SM] Exiting wifiConnected_ipObtaining state
104. [WF][SM] IP GOT IP:192.168.88.7, MASK: 255.255.255.0, Gateway: 192.168.88.254, dns1: 192.168.88.254, dns2: 0.0.0.0
105. [WF][SM] State Action ###wifiConnected_ipObtaining### --->>> ###wifiConnected_IPOK###
106. [WF][SM] Entering wifiConnected_IPOK state
107. [APP] [EVT] GOT IP 715004
108. [SYS] Memory left is 150312 Bytes
109. proc_hellow_entry: RISC-V rv32imafc.gj_lf686_demo_wifi

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在这些信息中，可以看见一条信息：

1. [WF][SM] Exiting wifiConnected_ipObtaining state
2. [WF][SM] IP GOT IP:192.168.88.7, MASK: 255.255.255.0, Gateway: 192.168.88.254, dns1: 192.168.88.254, dns2: 0.0.0.0

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这标识已经连上路由器，并通过dhcp分配了IP地址为192.168.88.7。

电脑中打开一个cmd窗口，查看本机的ip地址。

1. 无线局域网适配器 WLAN:
2. 连接特定的 DNS 后缀 . . . . . . . : Realtek
3. IPv4 地址 . . . . . . . . . . . . : 192.168.88.6
4. 子网掩码. . . . . . . . . . . . : 255.255.255.0
5. 默认网关. . . . . . . . . . . . . : 192.168.88.254
6. 以太网适配器 蓝牙网络连接:
7. 媒体状态. . . . . . . . . . . . : 媒体已断开连接
8. 连接特定的 DNS 后缀 . . . . . . . :

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使用ping指令，看是否能连通开发板

1. C:Usersjohn>ping 192.168.88.7
2. 正在 Ping 192.168.88.7 具有 32 字节的数据:
3. 来自 192.168.88.7 的回复: 字节=32 时间=5ms TTL=255
4. 来自 192.168.88.7 的回复: 字节=32 时间=2ms TTL=255
5. 来自 192.168.88.7 的回复: 字节=32 时间=4ms TTL=255
6. 来自 192.168.88.7 的回复: 字节=32 时间=9ms TTL=255
7. 192.168.88.7 的 Ping 统计信息:
8. 数据包: 已发送 = 4，已接收 = 4，丢失 = 0 (0% 丢失)，
9. 往返行程的估计时间(以毫秒为单位):
10. 最短 = 2ms，最长 = 9ms，平均 = 5ms

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可以看见已经能ping通开发板。说明开发板已经挂在无线网络上，并且项目提供了被ping通的功能。这在windows中被称呼为文件和打印机共享(回显请求 - ICMPv4-In)。windows中需要在防火墙中设置才能开启这个功能。这个项目应该没有防火墙吧。但是直接就提供了回显请求功能了。这个功能应该能使得外部设备能知道这个开发板是否在线。

*********************************************************************************************

至此，初步探索结束。应该下一步可以在此基础上开展工作了？

可惜理想很丰满，现实很骨感。

首先，功能实现之前，先实现对功能得触发。去看看项目得指令wifi_sta_connect是如何触发？

找到wifi_sta_connect函数定义：

1. static void wifi_sta_connect(char *ssid, char *password)
2. {
3. wifi_interface_t wifi_interface;
5. wifi_interface = wifi_mgmr_sta_enable();
6. wifi_mgmr_sta_connect(wifi_interface, ssid, password, NULL, NULL, 0, 0);
7. }

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以及函数引用

1. case CODE_WIFI_ON_PROV_CONNECT:
2. {
3. printf("[APP] [EVT] [PROV] [CONNECT] %lldrn", aos_now_ms());
4. printf("connecting to %s:%s...rn", ssid, password);
5. wifi_sta_connect(ssid, password);
6. }

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这个引用在函数static void event_cb_wifi_event(input_event_t *event, void *private_data)里。。。
这是什么鬼。命令行不是在以下数据结构里吗？

1. const static struct cli_command cmds_user[] STATIC_CLI_CMD_ATTRIBUTE = {
2. { "aws", "aws iot demo", cmd_aws},
3. { "pka", "pka iot demo", cmd_pka},
4. { "wifi", "wifi", cmd_wifi},
5. { "sha", "sha iot demo", cmd_sha},
6. { "trng", "trng test", cmd_trng},
7. { "aes", "trng test", cmd_aes},
8. { "cks", "cks test", cmd_cks},
9. { "dma", "dma test", cmd_dma},
10. { "exception_load", "exception load test", cmd_exception_load},
11. { "exception_l_illegal", "exception load test", cmd_exception_l_illegal},
12. { "exception_store", "exception store test", cmd_exception_store},
13. { "exception_inst_illegal", "exception illegal instruction", cmd_exception_illegal_ins},
14. /*Stack Command*/
15. { "stack_wifi", "Wi-Fi Stack", cmd_stack_wifi},
16. /*TCP/IP network test*/
17. {"http", "http client download test based on socket", http_test_cmd},
18. {"httpc", "http client download test based on RAW TCP", cmd_httpc_test},
19. };

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然后，全文件查找cli

1. fd_console = aos_open("/dev/ttyS0", 0);
2. if (fd_console >= 0) {
3. printf("Init CLI with event Drivenrn");
4. aos_cli_init(0);
5. aos_poll_read_fd(fd_console, aos_cli_event_cb_read_get(), (void*)0x12345678);
6. _cli_init();
7. }

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原来命令行有两种模式，一种是直接解码，一种是消息发送或者说事件方式。

以上函数中fd_console应该是默认的，烧录代码的串口吧？
看样子在实现自己的功能代码之前，还得有#include的相关知识。
特别提醒。这点一定注意。如果有相关知识会很顺利学习这个开发板。
*******************************************************************************************************
如果板子还在我手上的话，也许下一步借助这个板子，先开始一段FreeRTOS
的学习吧。