andy/tinyUSB
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

msc example response PREVENT_ALLOW_MEDIUM_REMOVAL command as unsupported command

Browse Source 
LUN1 of msc_disk_dual will be set to not ready to simulate medium not
present (e.g SD card removed)
This commit is contained in:
hathach
2022-02-15 22:40:08 +07:00
parent 456c06aa5e
commit 391edc7afb
5 changed files with 5 additions and 34 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
examples/device/msc_dual_lun/src/msc_disk_dual.c
View File

@@ -28,6 +28,9 @@
#if CFG_TUD_MSC
// When button is pressed, LUN1 will be set to not ready to simulate
// medium not present (e.g SD card removed)
// Some MCU doesn't have enough 8KB SRAM to store the whole disk
// We will use Flash as read-only disk with board that has
// CFG_EXAMPLE_MSC_READONLY defined
@@ -227,7 +230,7 @@ void tud_msc_inquiry_cb(uint8_t lun, uint8_t vendor_id[8], uint8_t product_id[16
// return true allowing host to read/write this LUN e.g SD card inserted
bool tud_msc_test_unit_ready_cb(uint8_t lun)
{
(void) lun;
if ( lun == 1 && board_button_read() ) return false;
return true; // RAM disk is always ready
}
@@ -320,23 +323,6 @@ int32_t tud_msc_scsi_cb (uint8_t lun, uint8_t const scsi_cmd[16], void* buffer,
switch (scsi_cmd[0])
{
case SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL:
// Host is about to read/write etc ... better not to disconnect disk
resplen = 0;
break;
case SCSI_CMD_START_STOP_UNIT:
// Host try to eject/safe remove/poweroff us. We could safely disconnect with disk storage, or go into lower power
/* scsi_start_stop_unit_t const * start_stop = (scsi_start_stop_unit_t const *) scsi_cmd;
// Start bit = 0 : low power mode, if load_eject = 1 : unmount disk storage as well
// Start bit = 1 : Ready mode, if load_eject = 1 : mount disk storage
start_stop->start;
start_stop->load_eject;
*/
resplen = 0;
break;
default:
// Set Sense = Invalid Command Operation
tud_msc_set_sense(lun, SCSI_SENSE_ILLEGAL_REQUEST, 0x20, 0x00);