*SEE UPDATE BELOW*<\/p>\n
I spent quite some time debugging an issue where the wifi wouldn’t connect in station mode on the esp8266 today. wifi_station_get_connect_status() would return either 1 or 3 (which means CONNECTING or AP_NOT_FOUND). The issue \/appears\/ to be that wifi_station_set_config does not work reliably when called outside user_init (even if called from a function called from user_init. I.e.<\/p>\n
\r\nvoid ICACHE_FLASH_ATTR wifi_config() {\r\n \/\/ Wifi configuration\r\n char ssid[32] = SSID;\r\n char password[64] = SSID_PASSWORD;\r\n struct station_config stationConf;\r\n\r\n \/\/Set station mode\r\n wifi_set_opmode( 0x1 );\r\n\r\n \/\/Set ap settings\r\n os_memcpy(&stationConf.ssid, ssid, 32);\r\n os_memcpy(&stationConf.password, password, 64);\r\n wifi_station_set_config(&stationConf);\r\n \/\/wifi_station_connect(); \/\/ should not be required\r\n debug("init wifi");\r\n debug(SSID);\r\n debug(SSID_PASSWORD);\r\n}\r\n\r\n\/\/Init function\r\nvoid ICACHE_FLASH_ATTR user_init() {\r\n\r\n \/\/ Set UART Speed (default appears to be rather odd 77KBPS)\r\n uart_init(BIT_RATE_9600,BIT_RATE_9600);\r\n\r\n wifi_config();\r\n\r\n \/\/Start os task\r\n system_os_task(loop, user_procTaskPrio,user_procTaskQueue, user_procTaskQueueLen);\r\n system_os_post(user_procTaskPrio, 0, 0 );\r\n\r\n network_init();\r\n}\r\n<\/pre>\nDoes NOT work consistantly. Whereas:<\/p>\n
\r\n\/\/Init function\r\nvoid ICACHE_FLASH_ATTR user_init() {\r\n\r\n \/\/ Set UART Speed (default appears to be rather odd 77KBPS)\r\n uart_init(BIT_RATE_9600,BIT_RATE_9600);\r\n\r\n \/\/wifi_config();\r\n \/\/ Wifi configuration\r\n char ssid[32] = SSID;\r\n char password[64] = SSID_PASSWORD;\r\n struct station_config stationConf;\r\n\r\n \/\/Set station mode\r\n wifi_set_opmode( 0x1 );\r\n\r\n \/\/Set ap settings\r\n os_memcpy(&stationConf.ssid, ssid, 32);\r\n os_memcpy(&stationConf.password, password, 64);\r\n wifi_station_set_config(&stationConf);\r\n \/\/wifi_station_connect(); \/\/ should not be required\r\n debug("init wifi");\r\n debug(SSID);\r\n debug(SSID_PASSWORD);\r\n\r\n \/\/Start os task\r\n system_os_task(loop, user_procTaskPrio,user_procTaskQueue, user_procTaskQueueLen);\r\n system_os_post(user_procTaskPrio, 0, 0 );\r\n\r\n network_init();\r\n}\r\n<\/pre>\nWorks as expected. The reason that wifi_config() above may sometimes work is that I would guess it occasionally gets inlined. I’ve no idea why the calls need to be in user_init directly though, there’s perhaps some funky stack related stuff going on.<\/p>\n
UPDATE<\/h2>\n
Wow, Espressif saw my post and emailed me out of the blue. There suggestion was that stationConf.bssid_set should also be set to 0 in this case. Otherwise it will also check the AP mac address i.e it should be:<\/p>\n
\r\nvoid wifi_config()\r\n{\r\n\/\/ Wifi configuration\r\nchar ssid[32] = SSID;\r\nchar password[64] = PASSWORD;\r\nstruct station_config stationConf;\r\n\r\n\/\/Set station mode\r\nwifi_set_opmode( 0x1 );\r\n\r\nstationConf.bssid_set = 0;\r\n\r\n\/\/Set ap settings\r\nos_memcpy(&stationConf.ssid, ssid, 32);\r\nos_memcpy(&stationConf.password, password, 64);\r\nwifi_station_set_config(&stationConf);\r\n\r\n}\r\n\r\n\/\/Init function\r\nvoid user_init()\r\n{\r\nwifi_config();\r\n}\r\n<\/pre>\nThis also makes sense to me in terms of random fiddling fixed this issue, I guess in some cases the uninitialized memory is 0 by chance. <\/p>\n","protected":false},"excerpt":{"rendered":"
*SEE UPDATE BELOW* I spent quite some time debugging an issue where the wifi wouldn’t connect in station mode on the esp8266 today. wifi_station_get_connect_status() would return either 1 or 3 (which means CONNECTING or AP_NOT_FOUND). The issue \/appears\/ to be that wifi_station_set_config does not work reliably when called outside user_init (even if called from a […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1],"tags":[],"class_list":["post-1897","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p1RRoU-uB","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/1897","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/comments?post=1897"}],"version-history":[{"count":3,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/1897\/revisions"}],"predecessor-version":[{"id":1906,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/1897\/revisions\/1906"}],"wp:attachment":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/media?parent=1897"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/categories?post=1897"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/tags?post=1897"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}