{"action":"created","issue":{"url":"https://api.github.com/repos/RIOT-OS/RIOT/issues/9798","repository_url":"https://api.github.com/repos/RIOT-OS/RIOT","labels_url":"https://api.github.com/repos/RIOT-OS/RIOT/issues/9798/labels{/name}","comments_url":"https://api.github.com/repos/RIOT-OS/RIOT/issues/9798/comments","events_url":"https://api.github.com/repos/RIOT-OS/RIOT/issues/9798/events","html_url":"https://github.com/RIOT-OS/RIOT/issues/9798","id":351924837,"node_id":"MDU6SXNzdWUzNTE5MjQ4Mzc=","number":9798,"title":"SPI: MOSI/MISO on one PIN?","user":{"login":"Citrullin","id":4502018,"node_id":"MDQ6VXNlcjQ1MDIwMTg=","avatar_url":"https://avatars0.githubusercontent.com/u/4502018?v=4","gravatar_id":"","url":"https://api.github.com/users/Citrullin","html_url":"https://github.com/Citrullin","followers_url":"https://api.github.com/users/Citrullin/followers","following_url":"https://api.github.com/users/Citrullin/following{/other_user}","gists_url":"https://api.github.com/users/Citrullin/gists{/gist_id}","starred_url":"https://api.github.com/users/Citrullin/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Citrullin/subscriptions","organizations_url":"https://api.github.com/users/Citrullin/orgs","repos_url":"https://api.github.com/users/Citrullin/repos","events_url":"https://api.github.com/users/Citrullin/events{/privacy}","received_events_url":"https://api.github.com/users/Citrullin/received_events","type":"User","site_admin":false},"labels":[{"id":135467271,"node_id":"MDU6TGFiZWwxMzU0NjcyNzE=","url":"https://api.github.com/repos/RIOT-OS/RIOT/labels/driver","name":"driver","color":"aaffff","default":false},{"id":23399102,"node_id":"MDU6TGFiZWwyMzM5OTEwMg==","url":"https://api.github.com/repos/RIOT-OS/RIOT/labels/question","name":"question","color":"cc317c","default":true}],"state":"open","locked":false,"assignee":{"login":"basilfx","id":815976,"node_id":"MDQ6VXNlcjgxNTk3Ng==","avatar_url":"https://avatars3.githubusercontent.com/u/815976?v=4","gravatar_id":"","url":"https://api.github.com/users/basilfx","html_url":"https://github.com/basilfx","followers_url":"https://api.github.com/users/basilfx/followers","following_url":"https://api.github.com/users/basilfx/following{/other_user}","gists_url":"https://api.github.com/users/basilfx/gists{/gist_id}","starred_url":"https://api.github.com/users/basilfx/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/basilfx/subscriptions","organizations_url":"https://api.github.com/users/basilfx/orgs","repos_url":"https://api.github.com/users/basilfx/repos","events_url":"https://api.github.com/users/basilfx/events{/privacy}","received_events_url":"https://api.github.com/users/basilfx/received_events","type":"User","site_admin":false},"assignees":[{"login":"basilfx","id":815976,"node_id":"MDQ6VXNlcjgxNTk3Ng==","avatar_url":"https://avatars3.githubusercontent.com/u/815976?v=4","gravatar_id":"","url":"https://api.github.com/users/basilfx","html_url":"https://github.com/basilfx","followers_url":"https://api.github.com/users/basilfx/followers","following_url":"https://api.github.com/users/basilfx/following{/other_user}","gists_url":"https://api.github.com/users/basilfx/gists{/gist_id}","starred_url":"https://api.github.com/users/basilfx/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/basilfx/subscriptions","organizations_url":"https://api.github.com/users/basilfx/orgs","repos_url":"https://api.github.com/users/basilfx/repos","events_url":"https://api.github.com/users/basilfx/events{/privacy}","received_events_url":"https://api.github.com/users/basilfx/received_events","type":"User","site_admin":false}],"milestone":null,"comments":3,"created_at":"2018-08-19T18:45:28Z","updated_at":"2018-08-20T09:55:14Z","closed_at":null,"author_association":"NONE","body":"Hi,\r\n\r\nI started writing a driver for a SPI epaper display. So I got one issue: It doesn't have a dedicated MOSI and MISO pin. (See: http://www.good-display.com/download_detail/downloadsId=575.html)\r\n\r\nSome people recommended the following solutions: MUX, Connected lanes via Schottky diode or resistor. I will try out all solutions.\r\n\r\nBut in case I just connect both pins to the data pin of the epaper: Does it make problems with the RIOT hard-SPI implementation? My flow would be the following:\r\n1. init SPI bus\r\n2. Aquire\r\n3. transfer bytes\r\n4. Release\r\n5. Aquire\r\n6. transfer reg\r\n7. Release\r\n\r\nbest regards\r\nPhilipp"},"comment":{"url":"https://api.github.com/repos/RIOT-OS/RIOT/issues/comments/414262255","html_url":"https://github.com/RIOT-OS/RIOT/issues/9798#issuecomment-414262255","issue_url":"https://api.github.com/repos/RIOT-OS/RIOT/issues/9798","id":414262255,"node_id":"MDEyOklzc3VlQ29tbWVudDQxNDI2MjI1NQ==","user":{"login":"Citrullin","id":4502018,"node_id":"MDQ6VXNlcjQ1MDIwMTg=","avatar_url":"https://avatars0.githubusercontent.com/u/4502018?v=4","gravatar_id":"","url":"https://api.github.com/users/Citrullin","html_url":"https://github.com/Citrullin","followers_url":"https://api.github.com/users/Citrullin/followers","following_url":"https://api.github.com/users/Citrullin/following{/other_user}","gists_url":"https://api.github.com/users/Citrullin/gists{/gist_id}","starred_url":"https://api.github.com/users/Citrullin/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Citrullin/subscriptions","organizations_url":"https://api.github.com/users/Citrullin/orgs","repos_url":"https://api.github.com/users/Citrullin/repos","events_url":"https://api.github.com/users/Citrullin/events{/privacy}","received_events_url":"https://api.github.com/users/Citrullin/received_events","type":"User","site_admin":false},"created_at":"2018-08-20T09:55:14Z","updated_at":"2018-08-20T09:55:14Z","author_association":"NONE","body":"@leandrolanzieri Good catch. That is interesting, since in (10) data stop the following is written:\r\n\"To stop data transmission, this command must be issued to check the data_flag.\r\nData_flag:\r\nData flag of receiving user data.\r\n0: Driver didn’t receive all the data.\r\n1: Driver has already received all the one-frame data (DTM1 and DTM2).\""}}
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