{"action":"opened","issue":{"url":"https://api.github.com/repos/geolink/opentracker/issues/44","labels_url":"https://api.github.com/repos/geolink/opentracker/issues/44/labels{/name}","comments_url":"https://api.github.com/repos/geolink/opentracker/issues/44/comments","events_url":"https://api.github.com/repos/geolink/opentracker/issues/44/events","html_url":"https://github.com/geolink/opentracker/issues/44","id":127822137,"number":44,"title":"Documentation of pinouts is unclear","user":{"login":"leekillough","id":15950023,"avatar_url":"https://avatars.githubusercontent.com/u/15950023?v=3","gravatar_id":"","url":"https://api.github.com/users/leekillough","html_url":"https://github.com/leekillough","followers_url":"https://api.github.com/users/leekillough/followers","following_url":"https://api.github.com/users/leekillough/following{/other_user}","gists_url":"https://api.github.com/users/leekillough/gists{/gist_id}","starred_url":"https://api.github.com/users/leekillough/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/leekillough/subscriptions","organizations_url":"https://api.github.com/users/leekillough/orgs","repos_url":"https://api.github.com/users/leekillough/repos","events_url":"https://api.github.com/users/leekillough/events{/privacy}","received_events_url":"https://api.github.com/users/leekillough/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2016-01-21T01:09:02Z","updated_at":"2016-01-21T01:09:02Z","closed_at":null,"body":"1. I am confused on Page 21 of the manual, where it implies there are extra \"Analog, PWM, GPIO\" pins on the expansion header. Are they the ones labeled EXT_PA21, EXT_PA22, EXT_PA23? Can they each be programmed as either Analog IN, Digital IN, Digital OUT, Open Collector, or PWM, or are they limited to digital in/out?\r\n\r\n2. What Is EXT_NS0? Is it a digital output which can be used to select a SPI slave device, as well as a possibly independent digital output if you don't need to select between multiple SPI devices?\r\n\r\n3. How many, if any, of the CAN, I2C, SPI, and serial (RX/TX + RX2/TX2) pins can be reprogrammed for other functions, and to what degree (analog, digital IN/OUT/OC, PWM)?\r\n\r\n4. Is EXT_SCK the SPI sclock, and is EXT_SCL the I2C sclock? I wanted to make sure, since I2C and SPI were not mentioned in detail in the manual. Perhaps sections on I2C and SPI, with simple circuit examples, should be added."}}