Phatline Posted October 13, 2016 Report Share Posted October 13, 2016 (edited) hi i want to check if the SD-Card is connected or not... so far so good, no problem, but there is a behaviour that cost me the night... Connected SD: 1st execution of FILE_CheckSDCard() > Return "0"... that is good - it work right 2nd execution of FILE_CheckSDCard() > Return "0"... that is good - it work right Disconnected SD: 1st execution of FILE_CheckSDCard() > Return "2"... that is good - it work right 2nd execution of FILE_CheckSDCard() > Return "0"... why that? the SD is still NOT connected... this code is executed every 2 seconds: MUTEX_SDCARD_TAKE; status = FILE_CheckSDCard(); MUTEX_SDCARD_GIVE; if (status == 2) { //NO SD if (status == 0) { //SD .... EDIT "FILE_CheckSDCard" itself internally uses "MIOS32_SDCARD_CheckAvailable();" maybe that is a trace when using "MIOS32_SDCARD_CheckAvailable" instead of "FILE_CheckSDCard()" but "FILE_DirExists" looses its functions and returns me everytime "-3" them, so useless for me again...so i am circling around... //SD-Card Connected? u8 prev_sdcard_available = sdcard_available; MUTEX_SDCARD_TAKE; sdcard_available = MIOS32_SDCARD_CheckAvailable(prev_sdcard_available); MUTEX_SDCARD_GIVE; if( sdcard_available && !prev_sdcard_available ) { statusSD = 1;} // SD Card has been connected else if( !sdcard_available && prev_sdcard_available ) { statusSD = 0; if (statusSD == 0) {//NO DISK} if (statusSD == 1) {// YES CARD! >>> next: check Card-content statusDir = FILE_DirExists("mq"); //ask file.c: exist a folder "mq/" on the CARD? Edited October 14, 2016 by Phatline Quote Link to comment Share on other sites More sharing options...
Phatline Posted October 14, 2016 Author Report Share Posted October 14, 2016 ok this 3 lines are needet, then its working: //Check SD-Card MUTEX_SDCARD_TAKE; availableSD = FILE_SDCardAvailable(); statusSD = FILE_CheckSDCard(); statusDir = FILE_DirExists("mq"); MUTEX_SDCARD_GIVE; availableSD is the one to take... Quote Link to comment Share on other sites More sharing options...
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