【躍昉科技BF2開發(fā)板試用體驗】四：繼續(xù)學習+階段小結

本文來源電子發(fā)燒友社區(qū)，作者：FrankSmith，帖子地址：https://bbs.elecfans.com/jishu_2296120_1_1.html

想進行tcpip通訊，首先得連接網(wǎng)絡。當然了，這個板子沒有以太網(wǎng)接口，得利用板子的WiFi接口了。這個項目提供了一些WiFi的功能，予以一一嘗試。

第一個指令是（wifi_scan）。

以下指令的輸入以及信息的輸出均在串口助手sscom中進行。

wifi_scan
------>>>>>> Scan CMD
# [WIFI] [IND] SCAN Done
wifi_mgmr_scan_complete_callback: scan complete
[APP] [EVT] SCAN Done 69207
cached scan list
****************************************************************************************************
index[00]: empty
index[01]: empty
index[02]: empty
index[03]: empty
index[04]: empty
index[05]: empty
index[06]: empty
index[07]: empty
index[08]: empty
index[09]: empty
index[10]: empty
index[11]: empty
index[12]: empty
index[13]: empty
index[14]: empty
index[15]: empty
index[16]: empty
index[17]: empty
index[18]: empty
index[19]: empty
index[20]: empty
index[21]: empty
index[22]: empty
index[23]: empty
index[24]: empty
index[25]: empty
index[26]: empty
index[27]: empty
index[28]: empty
index[29]: empty
index[30]: empty
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
----------------------------------------------------------------------------------------------------
proc_hellow_entry: RISC-V rv32imafc.gj_lf686_demo_wifi

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找到一個可以連接的無線路由器，ssid=268

使用這個項目提供的命令：(wifi_sta_connect)

wifi_sta_connect 268 07342596999
wifi_sta_connect 268 07342596999
----- BUG FIXME? NOT do STA enable again
[WF] MM_ADD_IF_REQ Sending: STA
歵d_start idx=0
[WF] MM_ADD_IF_REQ Done
[WF] vif_index from LAMC is 0
[WF][SM] Entering idle state
[WF][SM] Action Connect
ssid 268
ssid len 3
psk 07342596999
psk len 11
pmk
pmk len 0
channel band 0
channel freq 0
mac 00:00:00:00:00:00
dhcp status: true
[WF][SM] State Action ###idle### --->>> ###connecting###
connecting using vif_idx 0
===start sm_get_bss_params===
bssid[0] = 0xffff
bssid[1] = 0xffff
bssid[2] = 0xffff
search ssid = 268
result ssid index = -1
===end sm_get_bss_params===
[WF][SM] Entering connecting state
# [APP] [EVT] Connecting 707891
Probe Response
timestamp = 0x30ef47b10
Probe Response
timestamp = 0x30ef84cbd
Probe Response
timestamp = 0x30efc2998
Probe Response
timestamp = 0x30f03c5d3
[ 710128][[32mINFO[0m: lf_adc.c: 260] offset = 2108
proc_hellow_entry: RISC-V rv32imafc.gj_lf686_demo_wifi
===start sm_get_bss_params===
bssid[0] = 0xffff
bssid[1] = 0xffff
bssid[2] = 0xffff
search ssid = 268
result ssid index = 0
===end sm_get_bss_params===
wpa2/wpa3 pairwise ccmp:1,tkip:0,wep104:0,wep:40:0
wpa2/wpa3 group ccmp:0,tkip:1,wep104:0,wep:40:0
wpa2/wpa3 is_pmf_required:0
AP Security mode: wep:0,wpa:1,wpa2:1,wpa3:0
Probe Response
timestamp = 0x30f26308d
wpa2/wpa3 pairwise ccmp:1,tkip:0,wep104:0,wep:40:0
wpa2/wpa3 group ccmp:0,tkip:1,wep104:0,wep:40:0
wpa2/wpa3 is_pmf_required:0
AP Security mode: wep:0,wpa:1,wpa2:1,wpa3:0
wpa2/wpa3 pairwise ccmp:1,tkip:0,wep104:0,wep:40:0
wpa2/wpa3 group ccmp:0,tkip:1,wep104:0,wep:40:0
wpa2/wpa3 is_pmf_required:0
AP Security mode: wep:0,wpa:1,wpa2:1,wpa3:0
------ 247 set default key 0x42018c08, key ptr 0x00000000
[APP] [EVT] SCAN On Join 711659
set key:sta_idx:0, inst_nbr:0, key_idx:0,cipher_suite:2,key_len:16
set key:sta_idx:255, inst_nbr:0, key_idx:1,cipher_suite:1,key_len:32
ind ix 0x4201eddc, chan_ctxt is 0x420183f4
[RX] Connection Status
[RX] status_code 0
[RX] connect result: sm connect ind ok
[RX] MAC 70:85:40:2B:AB:EF
[RX] vif_idx 0
[RX] ap_idx 0
[RX] ch_idx 0
[RX] qos 1
[RX] acm 0
[RX] assoc_req_ie_len 80
[RX] assoc_rsp_ie_len 172
[RX] aid 0
[RX] band 0
[RX] center_freq 2422
[RX] width 0
[RX] center_freq1 2422
[RX] center_freq2 0
[WF][SM] Exiting connecting state
[WF][SM] State Action ###connecting### --->>> ###wifiConnected_ipObtaining###
[WF][SM] Entering wifiConnected_ipObtaining state
[WF][SM] DHCP Starting...0x42019e24
[APP] [EVT] connected 711685
-----------------> AABA Request:
A-MSDU: Not Permitted
Block Ack Policy: Immediate Block Ack
TID: 0
Number of Buffers: 64
-----------------> AABA Response:
A-MSDU: Not Permitted
Block Ack Policy: Immediate Block Ack
TID: 0
Number of Buffers: 8
[lwip] netif status callback
IP: 192.168.88.7
MK: 255.255.255.0
GW: 192.168.88.254
[WF][SM] Exiting wifiConnected_ipObtaining state
[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
[WF][SM] State Action ###wifiConnected_ipObtaining### --->>> ###wifiConnected_IPOK###
[WF][SM] Entering wifiConnected_IPOK state
[APP] [EVT] GOT IP 715004
[SYS] Memory left is 150312 Bytes
proc_hellow_entry: RISC-V rv32imafc.gj_lf686_demo_wifi

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在這些信息中，可以看見一條信息：

[WF][SM] Exiting wifiConnected_ipObtaining state
[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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這標識已經(jīng)連上路由器，并通過dhcp分配了IP地址為192.168.88.7。

電腦中打開一個cmd窗口，查看本機的ip地址。

無線局域網(wǎng)適配器 WLAN:
連接特定的 DNS 后綴 . . . . . . . : Realtek
IPv4 地址 . . . . . . . . . . . . : 192.168.88.6
子網(wǎng)掩碼. . . . . . . . . . . . : 255.255.255.0
默認網(wǎng)關. . . . . . . . . . . . . : 192.168.88.254
以太網(wǎng)適配器藍牙網(wǎng)絡連接:
媒體狀態(tài). . . . . . . . . . . . : 媒體已斷開連接
連接特定的 DNS 后綴 . . . . . . . :

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使用ping指令，看是否能連通開發(fā)板

C:Usersjohn>ping 192.168.88.7
正在 Ping 192.168.88.7 具有 32 字節(jié)的數(shù)據(jù):
來自 192.168.88.7 的回復: 字節(jié)=32 時間=5ms TTL=255
來自 192.168.88.7 的回復: 字節(jié)=32 時間=2ms TTL=255
來自 192.168.88.7 的回復: 字節(jié)=32 時間=4ms TTL=255
來自 192.168.88.7 的回復: 字節(jié)=32 時間=9ms TTL=255
192.168.88.7 的 Ping 統(tǒng)計信息:
數(shù)據(jù)包: 已發(fā)送 = 4，已接收 = 4，丟失 = 0 (0% 丟失)，
往返行程的估計時間(以毫秒為單位):
最短 = 2ms，最長 = 9ms，平均 = 5ms

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可以看見已經(jīng)能ping通開發(fā)板。說明開發(fā)板已經(jīng)掛在無線網(wǎng)絡上，并且項目提供了被ping通的功能。這在windows中被稱呼為文件和打印機共享(回顯請求 - ICMPv4-In)。windows中需要在防火墻中設置才能開啟這個功能。這個項目應該沒有防火墻吧。但是直接就提供了回顯請求功能了。這個功能應該能使得外部設備能知道這個開發(fā)板是否在線。

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

至此，初步探索結束。應該下一步可以在此基礎上開展工作了？

可惜理想很豐滿，現(xiàn)實很骨感。

首先，功能實現(xiàn)之前，先實現(xiàn)對功能得觸發(fā)。去看看項目得指令wifi_sta_connect是如何觸發(fā)？

找到wifi_sta_connect函數(shù)定義：

static void wifi_sta_connect(char *ssid, char *password)
{
wifi_interface_t wifi_interface;
wifi_interface = wifi_mgmr_sta_enable();
wifi_mgmr_sta_connect(wifi_interface, ssid, password, NULL, NULL, 0, 0);
}

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以及函數(shù)引用

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

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這個引用在函數(shù)static void event_cb_wifi_event(input_event_t *event, void *private_data)里。。。
這是什么鬼。命令行不是在以下數(shù)據(jù)結構里嗎？

const static struct cli_command cmds_user[] STATIC_CLI_CMD_ATTRIBUTE = {
{ "aws", "aws iot demo", cmd_aws},
{ "pka", "pka iot demo", cmd_pka},
{ "wifi", "wifi", cmd_wifi},
{ "sha", "sha iot demo", cmd_sha},
{ "trng", "trng test", cmd_trng},
{ "aes", "trng test", cmd_aes},
{ "cks", "cks test", cmd_cks},
{ "dma", "dma test", cmd_dma},
{ "exception_load", "exception load test", cmd_exception_load},
{ "exception_l_illegal", "exception load test", cmd_exception_l_illegal},
{ "exception_store", "exception store test", cmd_exception_store},
{ "exception_inst_illegal", "exception illegal instruction", cmd_exception_illegal_ins},
/*Stack Command*/
{ "stack_wifi", "Wi-Fi Stack", cmd_stack_wifi},
/*TCP/IP network test*/
{"http", "http client download test based on socket", http_test_cmd},
{"httpc", "http client download test based on RAW TCP", cmd_httpc_test},
};

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然后，全文件查找cli

fd_console = aos_open("/dev/ttyS0", 0);
if (fd_console >= 0) {
printf("Init CLI with event Drivenrn");
aos_cli_init(0);
aos_poll_read_fd(fd_console, aos_cli_event_cb_read_get(), (void*)0x12345678);
_cli_init();
}

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原來命令行有兩種模式，一種是直接解碼，一種是消息發(fā)送或者說事件方式。

以上函數(shù)中fd_console應該是默認的，燒錄代碼的串口吧？
看樣子在實現(xiàn)自己的功能代碼之前，還得有#include的相關知識。
特別提醒。這點一定注意。如果有相關知識會很順利學習這個開發(fā)板。
*******************************************************************************************************
如果板子還在我手上的話，也許下一步借助這個板子，先開始一段FreeRTOS
的學習吧。

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