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add usb msc callback description

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This commit is contained in:
hathach 2018-07-26 22:34:57 +07:00
parent 5bdf40901f
commit e86f7d0b88
2 changed files with 11 additions and 10 deletions
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2
lib/tinyusb

@ -1 +1 @@
Subproject commit e362f5fd64d257e3ad70962be59fc8593a0f5d95 Subproject commit 72b600c393e543361b073abee3da823d41383660

19
ports/nrf/usb/usb_msc_flash.c
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@ -53,12 +53,10 @@
#define FL_PAGE_SZ 4096 #define FL_PAGE_SZ 4096
//--------------------------------------------------------------------+ // Callback invoked when received an SCSI command not in built-in list below
// tinyusb callbacks // - READ_CAPACITY10, READ_FORMAT_CAPACITY, INQUIRY, MODE_SENSE6, REQUEST_SENSE
//--------------------------------------------------------------------+ // - READ10 and WRITE10 has their own callbacks
int32_t tud_msc_scsi_cb (uint8_t lun, uint8_t const scsi_cmd[16], void* buffer, uint16_t bufsize) { int32_t tud_msc_scsi_cb (uint8_t lun, uint8_t const scsi_cmd[16], void* buffer, uint16_t bufsize) {
// read10 & write10 has their own callback and MUST not be handled here
void const* resp = NULL; void const* resp = NULL;
uint16_t len = 0; uint16_t len = 0;
@ -74,7 +72,7 @@ int32_t tud_msc_scsi_cb (uint8_t lun, uint8_t const scsi_cmd[16], void* buffer,
break; break;
case SCSI_CMD_START_STOP_UNIT: case SCSI_CMD_START_STOP_UNIT:
// Host try to eject/safe remove/powerof 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 * cmd_start_stop = (scsi_start_stop_unit_t const *) scsi_cmd
len = 0; len = 0;
break; break;
@ -94,9 +92,8 @@ int32_t tud_msc_scsi_cb (uint8_t lun, uint8_t const scsi_cmd[16], void* buffer,
return len; return len;
} }
/*------------------------------------------------------------------*/ // Callback invoked when received READ10 command.
/* tinyusb Flash READ10 & WRITE10 // Copy disk's data to buffer (up to bufsize) and return number of copied bytes.
*------------------------------------------------------------------*/
int32_t tud_msc_read10_cb (uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize) { int32_t tud_msc_read10_cb (uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize) {
(void) lun; (void) lun;
(void) offset; (void) offset;
@ -108,6 +105,8 @@ int32_t tud_msc_read10_cb (uint8_t lun, uint32_t lba, uint32_t offset, void* buf
return block_count * MSC_FLASH_BLOCK_SIZE; return block_count * MSC_FLASH_BLOCK_SIZE;
} }
// 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, void* buffer, uint32_t bufsize) { int32_t tud_msc_write10_cb (uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize) {
(void) lun; (void) lun;
(void) offset; (void) offset;
@ -127,6 +126,8 @@ int32_t tud_msc_write10_cb (uint8_t lun, uint32_t lba, uint32_t offset, void* bu
return block_count * MSC_FLASH_BLOCK_SIZE; return block_count * MSC_FLASH_BLOCK_SIZE;
} }
// Callback invoked when WRITE10 command is completed (status received and accepted by host).
// used to flush any pending cache.
void tud_msc_write10_complete_cb (uint8_t lun) { void tud_msc_write10_complete_cb (uint8_t lun) {
(void) lun; (void) lun;