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=====Host======
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CPU : i.MX6Q
http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=i.MX6Q
kernel : linux-3.0.35
module code :https://gist.github.com/anonymous/bc224cfc1bbdf4962bd0
app code : https://gist.github.com/anonymous/e380062f0c66a7047595
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======Guest====
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DHT11 :http://akizukidenshi.com/download/ds/aosong/DHT11.pdf
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執行app的結果 :https://gist.github.com/anonymous/b6069291919e5c4738fa
===============
這是一個linux與溫溼度感測IC的driver&app
執行app code的31-43行應該要讀取完40bit的數據後跳出迴圈
實際執行卻會在40行形成無限迴圈
我想可能是"ioctl(dev_fd,0,0)"函數花了太多時間執行(?
"ioctl(dev_fd,0,0)"函數敘述於module code的69-74行
"pig_yan_ru_gpio28_mod_value(cmd,arg)"函數敘述於module code的24-67行
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求解Q_Q
如有資料不足處 請提醒我一下 謝謝~