View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000496 | PicoCOM2 | SD/MMC | public | 2011-03-08 13:45 | 2011-03-08 14:25 |
| Reporter | Assigned To | ||||
| Priority | normal | Severity | minor | Reproducibility | have not tried |
| Status | resolved | Resolution | fixed | ||
| Product Version | V1.16 | ||||
| Target Version | V1.17 | Fixed in Version | V1.17 | ||
| Summary | 0000496: Some SD Cards can not be written on. | ||||
| Description | Customer reports that there are several SD cards that show this problem. Reading access is not affected. | ||||
| Forum Link | |||||
| Found Driver Version | V1.2 | ||||
| Fixed Driver Version | V1.3 | ||||
| related to | 0000434 | new | Some SD-cards can not be access correctly. Data transfer and following access hangs in this case. |
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CMD25 (multiple block write) seems to be responsible for that problem. Workaround: Can be disabled in SDMemory driver http://msdn.microsoft.com/en-us/library/ms890889.aspx [HKEY_LOCAL_MACHINE\Drivers\SDCARD\ClientDrivers\Class\SDMemory_Class] "SingleBlockWrites"=dword:1 ; force the driver to use single block access [HKEY_LOCAL_MACHINE\Drivers\SDCARD\ClientDrivers\Class\SDMemory_Class\High_Capacity] "SingleBlockWrites"=dword:1 ; force the driver to use single block access |
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Merged latest changes from AT91SAM9G45. Busy state after Block writes will be checked manually |
