add usb msc callback description
This commit is contained in:
parent
5dd02cbdd3
commit
cf6c534c19
|
@ -64,8 +64,8 @@ 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
|
// read10 & write10 has their own callback and MUST not be handled here
|
||||||
|
|
||||||
void const* ptr = NULL;
|
void const* response = NULL;
|
||||||
uint16_t len = 0;
|
uint16_t resplen = 0;
|
||||||
|
|
||||||
// most scsi handled is input
|
// most scsi handled is input
|
||||||
bool in_xfer = true;
|
bool in_xfer = true;
|
||||||
|
@ -74,39 +74,44 @@ int32_t tud_msc_scsi_cb (uint8_t lun, uint8_t const scsi_cmd[16], void* buffer,
|
||||||
{
|
{
|
||||||
case SCSI_CMD_TEST_UNIT_READY:
|
case SCSI_CMD_TEST_UNIT_READY:
|
||||||
// Command that host uses to check our readiness before sending other commands
|
// Command that host uses to check our readiness before sending other commands
|
||||||
len = 0;
|
resplen = 0;
|
||||||
break;
|
break;
|
||||||
|
|
||||||
case SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL:
|
case SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL:
|
||||||
// Host is about to read/write etc ... better not to disconnect disk
|
// Host is about to read/write etc ... better not to disconnect disk
|
||||||
len = 0;
|
resplen = 0;
|
||||||
break;
|
break;
|
||||||
|
|
||||||
case SCSI_CMD_START_STOP_UNIT:
|
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
|
// 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 * cmd_start_stop = (scsi_start_stop_unit_t const *) scsi_cmd
|
/* scsi_start_stop_unit_t const * start_stop = (scsi_start_stop_unit_t const *) scsi_cmd;
|
||||||
len = 0;
|
// 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;
|
break;
|
||||||
|
|
||||||
// negative means error -> tusb could stall and/or response with failed status
|
// negative means error -> tusb could stall and/or response with failed status
|
||||||
default: return -1;
|
default: return -1;
|
||||||
}
|
}
|
||||||
|
|
||||||
// return len must not larger than bufsize
|
// return resplen must not larger than bufsize
|
||||||
if ( len > bufsize ) len = bufsize;
|
if ( resplen > bufsize ) resplen = bufsize;
|
||||||
|
|
||||||
if ( ptr && len )
|
if ( response && resplen )
|
||||||
{
|
{
|
||||||
if(in_xfer)
|
if(in_xfer)
|
||||||
{
|
{
|
||||||
memcpy(buffer, ptr, len);
|
memcpy(buffer, response, resplen);
|
||||||
}else
|
}else
|
||||||
{
|
{
|
||||||
// SCSI output
|
// SCSI output
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
return len;
|
return resplen;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
|
@ -104,10 +104,10 @@ bool tud_msc_set_sense(uint8_t lun, uint8_t sense_key, uint8_t add_sense_code, u
|
||||||
//--------------------------------------------------------------------+
|
//--------------------------------------------------------------------+
|
||||||
/**
|
/**
|
||||||
* Callback invoked when received \ref SCSI_CMD_READ_10 command
|
* Callback invoked when received \ref SCSI_CMD_READ_10 command
|
||||||
* \param[in] lun Logical unit number
|
* \param[in] lun Logical unit number
|
||||||
* \param[in] lba Logical Block Address to be read
|
* \param[in] lba Logical Block Address to be read
|
||||||
* \param[in] offset Byte offset from LBA
|
* \param[in] offset Byte offset from LBA
|
||||||
* \param[out] buffer Buffer which application need to update with the response data.
|
* \param[out] buffer Buffer which application need to update with the response data.
|
||||||
* \param[in] bufsize Requested bytes
|
* \param[in] bufsize Requested bytes
|
||||||
*
|
*
|
||||||
* \return Number of byte read, if it is less than requested bytes by \a \b bufsize. Tinyusb will transfer
|
* \return Number of byte read, if it is less than requested bytes by \a \b bufsize. Tinyusb will transfer
|
||||||
|
@ -123,10 +123,10 @@ int32_t tud_msc_read10_cb (uint8_t lun, uint32_t lba, uint32_t offset, void* buf
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Callback invoked when received \ref SCSI_CMD_WRITE_10 command
|
* Callback invoked when received \ref SCSI_CMD_WRITE_10 command
|
||||||
* \param[in] lun Logical unit number
|
* \param[in] lun Logical unit number
|
||||||
* \param[in] lba Logical Block Address to be write
|
* \param[in] lba Logical Block Address to be write
|
||||||
* \param[in] offset Byte offset from LBA
|
* \param[in] offset Byte offset from LBA
|
||||||
* \param[out] buffer Buffer which holds written data.
|
* \param[out] buffer Buffer which holds written data.
|
||||||
* \param[in] bufsize Requested bytes
|
* \param[in] bufsize Requested bytes
|
||||||
*
|
*
|
||||||
* \return Number of byte written, if it is less than requested bytes by \a \b bufsize. Tinyusb will proceed with
|
* \return Number of byte written, if it is less than requested bytes by \a \b bufsize. Tinyusb will proceed with
|
||||||
|
@ -142,8 +142,8 @@ int32_t tud_msc_write10_cb (uint8_t lun, uint32_t lba, uint32_t offset, void* bu
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Callback invoked when received an SCSI command not in built-in list below.
|
* Callback invoked when received an SCSI command not in built-in list below.
|
||||||
* \param[in] lun Logical unit number
|
* \param[in] lun Logical unit number
|
||||||
* \param[in] scsi_cmd SCSI command contents which application must examine to response accordingly
|
* \param[in] scsi_cmd SCSI command contents which application must examine to response accordingly
|
||||||
* \param[out] buffer Buffer for SCSI Data Stage.
|
* \param[out] buffer Buffer for SCSI Data Stage.
|
||||||
* - For INPUT: application must fill this with response.
|
* - For INPUT: application must fill this with response.
|
||||||
* - For OUTPUT it holds the Data from host
|
* - For OUTPUT it holds the Data from host
|
||||||
|
|
Loading…
Reference in New Issue