Hi Matt, 2011/11/20 mattschinkel <[email protected]>
> I believe the response from the init procedure can tell if the SD card > is ok or not. I can just set a error variable. I still wonder what > response you get from your SDHC. > I wrote a simple program, tinkering sd_card.jal to get reply value, putting your procs in the sample code, etc... When starting, it write several information steps while in the init procedure, then if init is successful, it write more information using CSD CID twice (it was in your suggestion, why twice ?), then IF COND. In the end, here are the results: * for a 1GB Sandisk, known to work: !012=01=3<01><01><01><01><01><01><01><01><01><01><01><01><01><01><01><01><0 1><00>401 -- SD Card report -- SD Card reply: 01 CSD CID: 00 26 00 32 5F 59 83 C8 BE FB CF FF 92 40 40 D7 CSD CID: 00 26 00 32 5F 59 83 C8 BE FB CF FF 92 40 40 D7 IF COND:08FFFFFFFF => "=01=" is the reply value while in init procedure. When "3", it's just before sd_ready() call, "<01>" is the response value, printed from sd_ready() proc. It loops until it become "00". Then the sample itself runs and report more information. * for a 4GB SDHC Sandisk, known *not* to work: well I can't get the reply value... it get stuck within sd_init(), in sd_ready() call. !012=01=3<01><01><01><01><01><01><01>...... You'll never get a "00" response while in sd_ready. Note sd reply is "01". Well, that may sounds cryptic, and I can't post some code as I tinkered many things in libs. I only have a precious HEX file :) for Jaluino Bee (18f27J53). I'll post more information on jaluino.org about this reporting sample, and expected results. I can also tinker sd_card.jal to enable a "debug" mode, expecting a "serial_data" pseudo-var to report results. This would give a generic way to report sd card usage. Cheers, Seb > The table you suggest would be simple so far.... all standard capacity > are ok, high capacity are not. > -- You received this message because you are subscribed to the Google Groups "jallib" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/jallib?hl=en.
