diff options
Diffstat (limited to 'examples/device/cdc_msc/src/msc_disk.c')
| -rw-r--r-- | examples/device/cdc_msc/src/msc_disk.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/examples/device/cdc_msc/src/msc_disk.c b/examples/device/cdc_msc/src/msc_disk.c index 503baace9..cad2602a2 100644 --- a/examples/device/cdc_msc/src/msc_disk.c +++ b/examples/device/cdc_msc/src/msc_disk.c @@ -188,18 +188,35 @@ int32_t tud_msc_read10_cb(uint8_t lun, uint32_t lba, uint32_t offset, void* buff { (void) lun; + // out of ramdisk + if ( lba >= DISK_BLOCK_NUM ) return -1; + uint8_t const* addr = msc_disk[lba] + offset; memcpy(buffer, addr, bufsize); return bufsize; } +bool tud_msc_is_writable_cb (uint8_t lun) +{ + (void) lun; + +#ifdef CFG_EXAMPLE_MSC_READONLY + return false; +#else + return true; +#endif +} + // Callback invoked when received WRITE10 command. // Process data in buffer to disk's storage and return number of written bytes int32_t tud_msc_write10_cb(uint8_t lun, uint32_t lba, uint32_t offset, uint8_t* buffer, uint32_t bufsize) { (void) lun; + // out of ramdisk + if ( lba >= DISK_BLOCK_NUM ) return -1; + #ifndef CFG_EXAMPLE_MSC_READONLY uint8_t* addr = msc_disk[lba] + offset; memcpy(addr, buffer, bufsize); @@ -218,7 +235,7 @@ int32_t tud_msc_scsi_cb (uint8_t lun, uint8_t const scsi_cmd[16], void* buffer, // read10 & write10 has their own callback and MUST not be handled here void const* response = NULL; - uint16_t resplen = 0; + int32_t resplen = 0; // most scsi handled is input bool in_xfer = true; |