{"action":"created","issue":{"url":"https://api.github.com/repos/raspberrypi/firmware/issues/212","repository_url":"https://api.github.com/repos/raspberrypi/firmware","labels_url":"https://api.github.com/repos/raspberrypi/firmware/issues/212/labels{/name}","comments_url":"https://api.github.com/repos/raspberrypi/firmware/issues/212/comments","events_url":"https://api.github.com/repos/raspberrypi/firmware/issues/212/events","html_url":"https://github.com/raspberrypi/firmware/issues/212","id":19327509,"number":212,"title":"core_freq seems to affect I2C operation","user":{"login":"fangfufu","id":2323403,"avatar_url":"https://avatars.githubusercontent.com/u/2323403?v=3","gravatar_id":"","url":"https://api.github.com/users/fangfufu","html_url":"https://github.com/fangfufu","followers_url":"https://api.github.com/users/fangfufu/followers","following_url":"https://api.github.com/users/fangfufu/following{/other_user}","gists_url":"https://api.github.com/users/fangfufu/gists{/gist_id}","starred_url":"https://api.github.com/users/fangfufu/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/fangfufu/subscriptions","organizations_url":"https://api.github.com/users/fangfufu/orgs","repos_url":"https://api.github.com/users/fangfufu/repos","events_url":"https://api.github.com/users/fangfufu/events{/privacy}","received_events_url":"https://api.github.com/users/fangfufu/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":13,"created_at":"2013-09-11T15:42:07Z","updated_at":"2016-06-29T08:36:17Z","closed_at":null,"body":"Hello, \r\nMy I2C device gives strange readings when the core_freq in /boot/config.txt is set to 450. \r\nWhen core_freq=450:\r\n```\r\nfangfufu@snowden:~/Pi-Weather$ ./Pi-Sensors\r\nBoard Version: 1\r\nBoard Temperature: 35 C\r\nHumidity: 27 %\r\nRoom Temperature: -3244.8 C\r\nOutdoor Temperature: 28.3 C\r\nBoard Pressure: 3364.5\r\n```\r\n\r\nWhen core_freq is not set:\r\n```\r\nfangfufu@snowden:~/Pi-Weather$ ./Pi-Sensors\r\nBoard Version: 1\r\nBoard Temperature: 35 C\r\nHumidity: 26 %\r\nRoom Temperature: 29.1 C\r\nOutdoor Temperature: 28.2 C\r\nBoard Pressure: 100.4\r\n```\r\n\r\nI wonder if this is related to the SD card corruption when core_freq is overclocked. Is there a fix for this problem other than not overclocking? \r\n\r\nIn case you wonder, my I2C device is one of those Web4Robot Weather Station Board (http://www.web4robot.com/PiWeather.html)."},"comment":{"url":"https://api.github.com/repos/raspberrypi/firmware/issues/comments/229292603","html_url":"https://github.com/raspberrypi/firmware/issues/212#issuecomment-229292603","issue_url":"https://api.github.com/repos/raspberrypi/firmware/issues/212","id":229292603,"user":{"login":"Ruffio","id":1877612,"avatar_url":"https://avatars.githubusercontent.com/u/1877612?v=3","gravatar_id":"","url":"https://api.github.com/users/Ruffio","html_url":"https://github.com/Ruffio","followers_url":"https://api.github.com/users/Ruffio/followers","following_url":"https://api.github.com/users/Ruffio/following{/other_user}","gists_url":"https://api.github.com/users/Ruffio/gists{/gist_id}","starred_url":"https://api.github.com/users/Ruffio/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Ruffio/subscriptions","organizations_url":"https://api.github.com/users/Ruffio/orgs","repos_url":"https://api.github.com/users/Ruffio/repos","events_url":"https://api.github.com/users/Ruffio/events{/privacy}","received_events_url":"https://api.github.com/users/Ruffio/received_events","type":"User","site_admin":false},"created_at":"2016-06-29T08:36:16Z","updated_at":"2016-06-29T08:36:16Z","body":"@fangfufu can this issue be closed?"}}
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