{"action":"created","issue":{"url":"https://api.github.com/repos/MrPsi/NodeMCU-Wixel/issues/13","repository_url":"https://api.github.com/repos/MrPsi/NodeMCU-Wixel","labels_url":"https://api.github.com/repos/MrPsi/NodeMCU-Wixel/issues/13/labels{/name}","comments_url":"https://api.github.com/repos/MrPsi/NodeMCU-Wixel/issues/13/comments","events_url":"https://api.github.com/repos/MrPsi/NodeMCU-Wixel/issues/13/events","html_url":"https://github.com/MrPsi/NodeMCU-Wixel/issues/13","id":194557764,"number":13,"title":"NodeMCU is not booting due to Wixel holding GPIO15 high","user":{"login":"WanaGo","id":759846,"avatar_url":"https://avatars.githubusercontent.com/u/759846?v=3","gravatar_id":"","url":"https://api.github.com/users/WanaGo","html_url":"https://github.com/WanaGo","followers_url":"https://api.github.com/users/WanaGo/followers","following_url":"https://api.github.com/users/WanaGo/following{/other_user}","gists_url":"https://api.github.com/users/WanaGo/gists{/gist_id}","starred_url":"https://api.github.com/users/WanaGo/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/WanaGo/subscriptions","organizations_url":"https://api.github.com/users/WanaGo/orgs","repos_url":"https://api.github.com/users/WanaGo/repos","events_url":"https://api.github.com/users/WanaGo/events{/privacy}","received_events_url":"https://api.github.com/users/WanaGo/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":5,"created_at":"2016-12-09T10:08:36Z","updated_at":"2016-12-09T10:54:40Z","closed_at":null,"body":"Having a problem with the NodeMCU+Wixel setup where it often will not start up the NodeMCU as GPIO15 is often 3.3V, which is TXD2 from the NodeMCU to the Wixel. This must be 0V at bootup of the NodeMCU for it to boot correctly, and sometimes it is not. Its like the Wixel is holding it at 3.3V sometimes.\r\nWhen I plug in the USB to power the NodeMCU+Wixel, into the NodeMCU, I get 1 blink out of the NodeMCU and thats it. checking the serial traffic and its just dead, it hasnt booted up right. Have to look with 78800 baud, which is the default for the NodeMCU bootloader, and it just states the reason for the last reset, but thats it.\r\nIf I then short RST to GND on the Wixel and reset the NodeMCU with the reset button, the NodeMCU boots perfectly. I can then let go of the reset of the Wixel, and its away laughing.\r\n\r\nDont  know if anyone else is having this problem or not, but it happens almost every time I try and start it up. \r\n\r\nIts like we need 1 more wire from the NodeMCU to the Wixels RST line, as well as a pull down resistor maybe, so the Wixel is in reset to start with by default when the NodeMCU is trying to start up, then when the NodeMCU is ready, raise that pin high so the wixel can start up.\r\n\r\nThats what it seems like to me anyway.\r\n\r\nI am not proficient in LUA, I have programmed the NodeMCU before but only with the Arduino core. I will look into this, but if you can provide some feedback that would be really appreciated. \r\n\r\nThanks"},"comment":{"url":"https://api.github.com/repos/MrPsi/NodeMCU-Wixel/issues/comments/265987066","html_url":"https://github.com/MrPsi/NodeMCU-Wixel/issues/13#issuecomment-265987066","issue_url":"https://api.github.com/repos/MrPsi/NodeMCU-Wixel/issues/13","id":265987066,"user":{"login":"WanaGo","id":759846,"avatar_url":"https://avatars.githubusercontent.com/u/759846?v=3","gravatar_id":"","url":"https://api.github.com/users/WanaGo","html_url":"https://github.com/WanaGo","followers_url":"https://api.github.com/users/WanaGo/followers","following_url":"https://api.github.com/users/WanaGo/following{/other_user}","gists_url":"https://api.github.com/users/WanaGo/gists{/gist_id}","starred_url":"https://api.github.com/users/WanaGo/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/WanaGo/subscriptions","organizations_url":"https://api.github.com/users/WanaGo/orgs","repos_url":"https://api.github.com/users/WanaGo/repos","events_url":"https://api.github.com/users/WanaGo/events{/privacy}","received_events_url":"https://api.github.com/users/WanaGo/received_events","type":"User","site_admin":false},"created_at":"2016-12-09T10:54:40Z","updated_at":"2016-12-09T10:54:40Z","body":"https://github.com/esp8266/Arduino/issues/2469"}}
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