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Marlin-Artillery-M600/frameworks/CMSIS/LPC1768/lib/usb/mscuser.cpp
Chris Pepper 46b2773e13 General fixes for LPC1768 (#7834) 
* fixed some include paths

* LPC1768: Fix Serial API

Add missing serial methods used if TX_BUFFER_SIZE is set
Change return value of HalSerial:read to match Arduino API

* LPC1768: add filters to ADC

This is to try and compensate for hardware issue and oversensitivity to noise

* LPC1768: remove the polling section of delayMicroseconds

* LPC1768: lock usb mass storage device while device accesses it.

Currently only applicable to persistent store,
The device always has priority and will unmount the sd card from the host, Windows then tries to automount again so it can look like the explorer window freezes. Linux Mint, by default, just closes the Nemo window.

* Add timeout to make sure if Serial never connects that Marlin still boots

* Remove unneeded ifdef CPU_32_BIT

In general the need for ifdef CPU_32_BIT blocks means that something is missing from the HAL API or a Platform, in this case HAL_TICKS_PER_US was missing from the AVR Platform

* LPC1768: relocate RE-ARM debug_extra_script.py
2017-10-04 15:40:54 -05:00

837 lines
20 KiB
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/*----------------------------------------------------------------------------
* U S B - K e r n e l
*----------------------------------------------------------------------------
* Name: MSCUSER.C
* Purpose: Mass Storage Class Custom User Module
* Version: V1.10
*----------------------------------------------------------------------------
* This software is supplied "AS IS" without any warranties, express,
* implied or statutory, including but not limited to the implied
* warranties of fitness for purpose, satisfactory quality and
* noninfringement. Keil extends you a royalty-free right to reproduce
* and distribute executable files created using this software for use
* on NXP Semiconductors LPC family microcontroller devices only. Nothing
* else gives you the right to use this software.
*
* Copyright (c) 2005-2009 Keil Software.
*---------------------------------------------------------------------------*/
extern "C" {
#include "LPC17xx.h"
#include "lpc_types.h"
}
#include "usb.h"
#include "msc.h"
#include "usbcfg.h"
#include "usbhw.h"
#include "usbcore.h"
#include "mscuser.h"
#include "lpc17xx_wdt.h"
#include "../chanfs/diskio.h"
#include <debug_frmwrk.h>
DWORD MSC_BlockCount = 0;
uint32_t MemOK; /* Memory OK */
DWORD lba; /* start block */
DWORD transfer_count; /* blocks to transfer */
DWORD length;
uint32_t block_offset; /* current block offset*/
uint8_t BulkStage; /* Bulk Stage */
uint8_t BulkBuf[MSC_MAX_PACKET]; /* Bulk In/Out Buffer */
uint8_t block_cache[MSC_BLOCK_SIZE];
uint8_t BulkLen; /* Bulk In/Out Length */
Sense sense_data;
MSC_CBW CBW; /* Command Block Wrapper */
MSC_CSW CSW; /* Command Status Wrapper */
volatile uint8_t media_lock = 0;
volatile bool device_wants_lock = false;
#define NO_LOCK 0
#define HOST_LOCK 1
#define DEVICE_LOCK 2
extern uint32_t millis();
extern void _delay_ms(int delay);
uint32_t MSC_Aquire_Lock() {
NVIC_DisableIRQ(USB_IRQn);
device_wants_lock = true;
uint32_t end_millis = millis() + 1000;
if(media_lock == HOST_LOCK) {
NVIC_EnableIRQ(USB_IRQn);
while(media_lock == HOST_LOCK) {
if(((long)(end_millis - (millis())) < 0)) {
_DBG("No signal from Host, Assume success\n");
break;
}
WDT_Feed();
}
}
NVIC_DisableIRQ(USB_IRQn);
media_lock = DEVICE_LOCK;
NVIC_EnableIRQ(USB_IRQn);
_DBG("Device MSC Lock\n");
device_wants_lock = false;
return 0;
}
uint32_t MSC_Release_Lock() {
if(media_lock != DEVICE_LOCK) {
return 0; // Didn't have lock
}
media_lock = NO_LOCK;
if(disk_status(0) != STA_NOINIT) disk_ioctl(0, GET_SECTOR_COUNT, (void *)(&MSC_BlockCount));
_DBG("Device MSC Unlock\n");
NVIC_DisableIRQ(USB_IRQn);
sense_data.set(Sense_KEY::UNIT_ATTENTION, Sense_ASC::MEDIA_CHANGED);
NVIC_EnableIRQ(USB_IRQn);
return 0; // Released
}
uint32_t MSC_SD_Lock() {
if(media_lock == DEVICE_LOCK || (device_wants_lock && CBW.CB[4])) {
CSW.bStatus = CSW_CMD_FAILED;
sense_data.set(Sense_KEY::NOT_READY, Sense_ASC::LOGICAL_UNIT_NOT_READY, Sense_ASCQ::DEVICE_IS_BUSY);
MSC_SetCSW();
_DBG("Device has Lock (or is waiting for lock) cannot Lock..\n");
return 1;
}
if(CBW.CB[4]) {
media_lock = HOST_LOCK;
_DBG("OS MSC Lock\n");
} else {
media_lock = NO_LOCK;
_DBG("OS MSC Unlock\n");
}
// logical_unit = CBW.CB[1] & 0xE0;
CSW.bStatus = CSW_CMD_PASSED;
MSC_SetCSW();
return 0;
}
uint32_t MSC_SD_Release(uint8_t pdrv) {
MSC_BlockCount = 0;
return 0;
}
uint32_t MSC_SD_Init(uint8_t pdrv) {
DSTATUS ret = disk_initialize(pdrv);
if(ret) return ret;
if(disk_ioctl (pdrv, GET_SECTOR_COUNT, (void *)(&MSC_BlockCount))) return 1;
return 0;
}
#define STARTSTOP_STOPMOTOR 0x0
#define STARTSTOP_STARTMOTOR 0x1
#define STARTSTOP_EJECT 0x2
#define STARTSTOP_LOAD 0x3
void MSC_StartStopUnit() {
switch (CBW.CB[4] & 0x03) {
case STARTSTOP_EJECT:
MSC_SD_Release(0);
media_lock = NO_LOCK;
_DBG("OS Media Ejected UNLOCK\n");
break;
case STARTSTOP_LOAD:
if(MSC_BlockCount == 0) {
if(MSC_SD_Init(0) != 0) {
CSW.bStatus = CSW_CMD_FAILED;
sense_data.set(Sense_KEY::NOT_READY, Sense_ASC::MEDIUM_NOT_PRESENT, Sense_ASCQ::MANUAL_INTERVENTION_REQUIRED);
MSC_SetCSW();
return;
}
}
media_lock = HOST_LOCK;
_DBG("OS Media Mount LOCKED\n");
break;
default:
_DBG("MSC_StartStopUnit unknown startstopunit sub command: ");
_DBH(CBW.CB[4] & 0x03);
_DBG("\n");
}
CSW.bStatus = CSW_CMD_PASSED;
sense_data.reset();
MSC_SetCSW();
}
/*
* MSC Mass Storage Reset Request Callback
* Called automatically on Mass Storage Reset Request
* Parameters: None (global SetupPacket and EP0Buf)
* Return Value: TRUE - Success, FALSE - Error
*/
uint32_t MSC_Reset (void) {
BulkStage = MSC_BS_CBW;
return (TRUE);
}
/*
* MSC Get Max LUN Request Callback
* Called automatically on Get Max LUN Request
* Parameters: None (global SetupPacket and EP0Buf)
* Return Value: TRUE - Success, FALSE - Error
*/
uint32_t MSC_GetMaxLUN (void) {
EP0Buf[0] = 0; /* No LUN associated with this device */
return (TRUE);
}
bool host_get_lock(void) {
if(media_lock != DEVICE_LOCK && !device_wants_lock) {
media_lock = HOST_LOCK;
return true;
} else {
CSW.bStatus = CSW_CMD_FAILED;
sense_data.set(Sense_KEY::NOT_READY, Sense_ASC::LOGICAL_UNIT_NOT_READY, Sense_ASCQ::DEVICE_IS_BUSY);
MSC_SetCSW();
return false;
}
}
/*
* MSC Memory Read Callback
* Called automatically on Memory Read Event
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_MemoryRead (void) {
if(!host_get_lock()) {
_DBG("Auto Lock Fail Permission Denied Device has Lock\n");
return;
}
WDT_Feed();
uint32_t n = (length > MSC_MAX_PACKET) ? MSC_MAX_PACKET : length;
if (lba > MSC_BlockCount) {
n = (MSC_BlockCount - lba) * MSC_BLOCK_SIZE + block_offset;
BulkStage = MSC_BS_ERROR;
}
if(block_offset == 0) {
disk_read (0, block_cache, lba, 1);
}
USB_WriteEP(MSC_EP_IN, &block_cache[block_offset], n);
block_offset += n;
length -= n;
CSW.dDataResidue -= n;
if(block_offset >= MSC_BLOCK_SIZE) {
block_offset = 0;
++lba;
}
if (length == 0) {
BulkStage = MSC_BS_DATA_IN_LAST;
}
if (BulkStage != MSC_BS_DATA_IN) {
CSW.bStatus = CSW_CMD_PASSED;
sense_data.reset();
}
}
/*
* MSC Memory Write Callback
* Called automatically on Memory Write Event
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_MemoryWrite (void) {
if(!host_get_lock()) {
_DBG("Auto Lock Fail Permission Denied Device has Lock\n");
return;
}
WDT_Feed();
for (uint32_t n = 0; n < BulkLen; n++) {
block_cache[block_offset + n] = BulkBuf[n];
}
if(block_offset + BulkLen >= MSC_BLOCK_SIZE) {
if(!(disk_status(0) & STA_PROTECT)){
disk_write(0, block_cache, lba, 1);
}
}
block_offset += BulkLen;
length -= BulkLen;
CSW.dDataResidue -= BulkLen;
if(block_offset >= MSC_BLOCK_SIZE) {
block_offset = 0;
++lba;
}
if ((length == 0) || (BulkStage == MSC_BS_CSW)) {
CSW.bStatus = CSW_CMD_PASSED;
sense_data.reset();
MSC_SetCSW();
}
}
/*
* MSC Memory Verify Callback
* Called automatically on Memory Verify Event
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_MemoryVerify (void) {
if(!host_get_lock()) {
_DBG("Auto Lock Fail Permission Denied Device has Lock\n");
return;
}
WDT_Feed();
if(!block_offset) {
disk_read(0, block_cache, lba, 1);
}
for (uint32_t n = 0; n < BulkLen; n++) {
if (block_cache[block_offset + n] != BulkBuf[n]) {
MemOK = FALSE;
break;
}
}
block_offset += BulkLen;
length -= BulkLen;
CSW.dDataResidue -= BulkLen;
if ((length == 0) || (BulkStage == MSC_BS_CSW)) {
if(MemOK) {
CSW.bStatus = CSW_CMD_PASSED;
sense_data.reset();
} else {
CSW.bStatus = CSW_CMD_FAILED;
sense_data.set(Sense_KEY::MEDIUM_ERROR);
}
MSC_SetCSW();
}
}
/*
* MSC SCSI Read/Write Setup Callback
* Parameters: None (global variables)
* Return Value: TRUE - Success, FALSE - Error
*/
uint32_t MSC_RWSetup (void) {
uint32_t n;
/* Logical Block Address of First Block */
lba = (CBW.CB[2] << 24) |
(CBW.CB[3] << 16) |
(CBW.CB[4] << 8) |
(CBW.CB[5] << 0);
/* Number of Blocks to transfer */
transfer_count = (CBW.CB[7] << 8) |
(CBW.CB[8] << 0);
block_offset = 0;
length = transfer_count * MSC_BLOCK_SIZE;
if (CBW.dDataLength != (transfer_count * MSC_BLOCK_SIZE)) {
USB_SetStallEP(MSC_EP_IN);
USB_SetStallEP(MSC_EP_OUT);
CSW.bStatus = CSW_PHASE_ERROR;
MSC_SetCSW();
return (FALSE);
}
return (TRUE);
}
/*
* Check Data IN Format
* Parameters: None (global variables)
* Return Value: TRUE - Success, FALSE - Error
*/
uint32_t DataInFormat (void) {
if (CBW.dDataLength == 0) {
CSW.bStatus = CSW_PHASE_ERROR;
MSC_SetCSW();
return (FALSE);
}
if ((CBW.bmFlags & 0x80) == 0) {
USB_SetStallEP(MSC_EP_OUT);
CSW.bStatus = CSW_PHASE_ERROR;
MSC_SetCSW();
return (FALSE);
}
return (TRUE);
}
/*
* Perform Data IN Transfer
* Parameters: None (global variables)
* Return Value: TRUE - Success, FALSE - Error
*/
void DataInTransfer (void) {
if (BulkLen > CBW.dDataLength) {
BulkLen = CBW.dDataLength;
}
USB_WriteEP(MSC_EP_IN, BulkBuf, BulkLen);
BulkStage = MSC_BS_DATA_IN_LAST;
CSW.dDataResidue -= BulkLen;
CSW.bStatus = CSW_CMD_PASSED;
}
/*
* MSC SCSI Test Unit Ready Callback
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_TestUnitReady (void) {
if (CBW.dDataLength != 0) {
if ((CBW.bmFlags & 0x80) != 0) {
USB_SetStallEP(MSC_EP_IN);
} else {
USB_SetStallEP(MSC_EP_OUT);
}
}
if(device_wants_lock) {
sense_data.set(Sense_KEY::NOT_READY, Sense_ASC::MEDIUM_NOT_PRESENT, Sense_ASCQ::REASON_UNKNOWN);
CSW.bStatus = CSW_CMD_FAILED;
} else if(MSC_BlockCount > 0) {
sense_data.reset();
CSW.bStatus = CSW_CMD_PASSED;
} else {
CSW.bStatus = CSW_CMD_FAILED;
sense_data.set(Sense_KEY::NOT_READY, Sense_ASC::MEDIUM_NOT_PRESENT, Sense_ASCQ::LOADABLE);
}
MSC_SetCSW();
}
/*
* MSC SCSI Request Sense Callback
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_RequestSense (void) {
if (!DataInFormat()) return;
if(media_lock == DEVICE_LOCK || device_wants_lock) {
sense_data.set(Sense_KEY::NOT_READY, Sense_ASC::MEDIUM_NOT_PRESENT, Sense_ASCQ::REASON_UNKNOWN);
}
BulkBuf[ 0] = 0x70; /* Response Code */
BulkBuf[ 1] = 0x00;
BulkBuf[ 2] = static_cast<uint8_t>(sense_data.key);
BulkBuf[ 3] = 0x00;
BulkBuf[ 4] = 0x00;
BulkBuf[ 5] = 0x00;
BulkBuf[ 6] = 0x00;
BulkBuf[ 7] = 0x0A; /* Additional Length */
BulkBuf[ 8] = 0x00;
BulkBuf[ 9] = 0x00;
BulkBuf[10] = 0x00;
BulkBuf[11] = 0x00;
BulkBuf[12] = static_cast<uint8_t>(sense_data.asc);
BulkBuf[13] = static_cast<uint8_t>(sense_data.ascq);
BulkBuf[14] = 0x00;
BulkBuf[15] = 0x00;
BulkBuf[16] = 0x00;
BulkBuf[17] = 0x00;
if(sense_data.has_sense()){
_DBG("Sent Response to SenseRequest: ");
_DBH(static_cast<uint8_t>(sense_data.key));
_DBG("\n");
}
BulkLen = 18;
DataInTransfer();
}
/*
* MSC SCSI Inquiry Callback
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_Inquiry (void) {
if (!DataInFormat()) return;
BulkBuf[ 0] = 0x00; /* Direct Access Device */
BulkBuf[ 1] = 0x80; /* RMB = 1: Removable Medium */
BulkBuf[ 2] = 0x00; /* Version: No conformance claim to standard */
BulkBuf[ 3] = 0x01;
BulkBuf[ 4] = 36-4; /* Additional Length */
BulkBuf[ 5] = 0x80; /* SCCS = 1: Storage Controller Component */
BulkBuf[ 6] = 0x00;
BulkBuf[ 7] = 0x00;
BulkBuf[ 8] = 'M'; /* Vendor Identification */
BulkBuf[ 9] = 'a';
BulkBuf[10] = 'r';
BulkBuf[11] = 'l';
BulkBuf[12] = 'i';
BulkBuf[13] = 'n';
BulkBuf[14] = ' ';
BulkBuf[15] = ' ';
BulkBuf[16] = 'R'; /* Product Identification */
BulkBuf[17] = 'e';
BulkBuf[18] = '-';
BulkBuf[19] = 'A';
BulkBuf[20] = 'R';
BulkBuf[21] = 'M';
BulkBuf[22] = ' ';
BulkBuf[23] = 'S';
BulkBuf[24] = 'D';
BulkBuf[25] = 'C';
BulkBuf[26] = 'a';
BulkBuf[27] = 'r';
BulkBuf[28] = 'd';
BulkBuf[29] = ' ';
BulkBuf[30] = '0';
BulkBuf[31] = '1';
BulkBuf[32] = '1'; /* Product Revision Level */
BulkBuf[33] = '.';
BulkBuf[34] = '0';
BulkBuf[35] = ' ';
BulkLen = 36;
DataInTransfer();
}
/*
* MSC SCSI Mode Sense (6-Byte) Callback
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_ModeSense6 (void) {
if (!DataInFormat()) return;
BulkBuf[ 0] = 0x03;
BulkBuf[ 1] = 0x00;
BulkBuf[ 2] = 0x00;
BulkBuf[ 3] = 0x00;
BulkLen = 4;
DataInTransfer();
}
/*
* MSC SCSI Mode Sense (10-Byte) Callback
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_ModeSense10 (void) {
if (!DataInFormat()) return;
BulkBuf[ 0] = 0x00;
BulkBuf[ 1] = 0x06;
BulkBuf[ 2] = 0x00;
BulkBuf[ 3] = 0x00;
BulkBuf[ 4] = 0x00;
BulkBuf[ 5] = 0x00;
BulkBuf[ 6] = 0x00;
BulkBuf[ 7] = 0x00;
BulkLen = 8;
DataInTransfer();
}
/*
* MSC SCSI Read Capacity Callback
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_ReadCapacity (void) {
if (!DataInFormat()) return;
/* Last Logical Block */
BulkBuf[ 0] = ((MSC_BlockCount - 1) >> 24) & 0xFF;
BulkBuf[ 1] = ((MSC_BlockCount - 1) >> 16) & 0xFF;
BulkBuf[ 2] = ((MSC_BlockCount - 1) >> 8) & 0xFF;
BulkBuf[ 3] = ((MSC_BlockCount - 1) >> 0) & 0xFF;
/* Block Length */
BulkBuf[ 4] = (MSC_BLOCK_SIZE >> 24) & 0xFF;
BulkBuf[ 5] = (MSC_BLOCK_SIZE >> 16) & 0xFF;
BulkBuf[ 6] = (MSC_BLOCK_SIZE >> 8) & 0xFF;
BulkBuf[ 7] = (MSC_BLOCK_SIZE >> 0) & 0xFF;
BulkLen = 8;
DataInTransfer();
}
/*
* MSC SCSI Read Format Capacity Callback
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_ReadFormatCapacity (void) {
if (!DataInFormat()) return;
BulkBuf[ 0] = 0x00;
BulkBuf[ 1] = 0x00;
BulkBuf[ 2] = 0x00;
BulkBuf[ 3] = 0x08; /* Capacity List Length */
/* Block Count */
BulkBuf[ 4] = (MSC_BlockCount >> 24) & 0xFF;
BulkBuf[ 5] = (MSC_BlockCount >> 16) & 0xFF;
BulkBuf[ 6] = (MSC_BlockCount >> 8) & 0xFF;
BulkBuf[ 7] = (MSC_BlockCount >> 0) & 0xFF;
/* Block Length */
BulkBuf[ 8] = 0x02; /* Descriptor Code: Formatted Media */
BulkBuf[ 9] = (MSC_BLOCK_SIZE >> 16) & 0xFF;
BulkBuf[10] = (MSC_BLOCK_SIZE >> 8) & 0xFF;
BulkBuf[11] = (MSC_BLOCK_SIZE >> 0) & 0xFF;
BulkLen = 12;
DataInTransfer();
}
/*
* MSC Get Command Block Wrapper Callback
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_GetCBW (void) {
uint32_t n;
for (n = 0; n < BulkLen; n++) {
*((uint8_t *)&CBW + n) = BulkBuf[n];
}
if ((BulkLen == sizeof(CBW)) && (CBW.dSignature == MSC_CBW_Signature)) {
/* Valid CBW */
CSW.dTag = CBW.dTag;
CSW.dDataResidue = CBW.dDataLength;
if ((CBW.bLUN != 0) || (CBW.bCBLength < 1) || CBW.bCBLength > 16) {
fail: CSW.bStatus = CSW_CMD_FAILED;
sense_data.set(Sense_KEY::ILLEGAL_REQUEST);
MSC_SetCSW();
_DBG("Unsupported SCSI OP code ");
_DBH(CBW.CB[0]);
_DBG("\n");
} else {
switch (CBW.CB[0]) {
case SCSI_TEST_UNIT_READY:
MSC_TestUnitReady();
break;
case SCSI_REQUEST_SENSE:
MSC_RequestSense();
break;
case SCSI_FORMAT_UNIT:
goto fail;
case SCSI_INQUIRY:
MSC_Inquiry();
break;
case SCSI_START_STOP_UNIT:
MSC_StartStopUnit();
break;
case SCSI_MEDIA_REMOVAL:
MSC_SD_Lock();
break;
case SCSI_MODE_SELECT6:
goto fail;
case SCSI_MODE_SENSE6:
MSC_ModeSense6();
break;
case SCSI_MODE_SELECT10:
goto fail;
case SCSI_MODE_SENSE10:
MSC_ModeSense10();
break;
case SCSI_READ_FORMAT_CAPACITIES:
MSC_ReadFormatCapacity();
break;
case SCSI_READ_CAPACITY:
MSC_ReadCapacity();
break;
case SCSI_READ10:
if (MSC_RWSetup()) {
if ((CBW.bmFlags & 0x80) != 0) {
BulkStage = MSC_BS_DATA_IN;
MSC_MemoryRead();
} else {
USB_SetStallEP(MSC_EP_OUT);
CSW.bStatus = CSW_PHASE_ERROR;
MSC_SetCSW();
}
}
break;
case SCSI_WRITE10:
if (MSC_RWSetup()) {
if ((CBW.bmFlags & 0x80) == 0) {
BulkStage = MSC_BS_DATA_OUT;
} else {
USB_SetStallEP(MSC_EP_IN);
CSW.bStatus = CSW_PHASE_ERROR;
MSC_SetCSW();
}
}
break;
case SCSI_VERIFY10:
if (MSC_RWSetup()) {
if ((CBW.bmFlags & 0x80) == 0) {
BulkStage = MSC_BS_DATA_OUT;
MemOK = TRUE;
} else {
USB_SetStallEP(MSC_EP_IN);
CSW.bStatus = CSW_PHASE_ERROR;
MSC_SetCSW();
}
}
break;
case 0x35: // SCSI_SYNCHRONIZECACHE10
_DBG("SCSI_SYNCHRONIZECACHE10 Unsupported\n");
CSW.bStatus = CSW_CMD_FAILED;
sense_data.set(Sense_KEY::ILLEGAL_REQUEST);
MSC_SetCSW();
break;
case 0x9E: // SCSI_SERVICEACTIONIN16
_DBG("ServiceAction(16) Action: ");
_DBH(CBW.CB[1]);
_DBG(" Unsupported\n");
CSW.bStatus = CSW_CMD_FAILED;
sense_data.set(Sense_KEY::ILLEGAL_REQUEST);
MSC_SetCSW();
break;
default:
goto fail;
}
}
} else {
/* Invalid CBW */
USB_SetStallEP(MSC_EP_IN);
USB_SetStallEP(MSC_EP_OUT);
BulkStage = MSC_BS_ERROR;
}
}
/*
* MSC Set Command Status Wrapper Callback
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_SetCSW (void) {
CSW.dSignature = MSC_CSW_Signature;
USB_WriteEP(MSC_EP_IN, (uint8_t *)&CSW, sizeof(CSW));
BulkStage = MSC_BS_CSW;
}
/*
* MSC Bulk In Callback
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_BulkIn (void) {
switch (BulkStage) {
case MSC_BS_DATA_IN:
switch (CBW.CB[0]) {
case SCSI_READ10:
MSC_MemoryRead();
break;
}
break;
case MSC_BS_DATA_IN_LAST:
MSC_SetCSW();
break;
case MSC_BS_DATA_IN_LAST_STALL:
USB_SetStallEP(MSC_EP_IN);
MSC_SetCSW();
break;
case MSC_BS_CSW:
BulkStage = MSC_BS_CBW;
break;
}
}
/*
* MSC Bulk Out Callback
* Parameters: None (global variables)
* Return Value: None
*/
void MSC_BulkOut (void) {
BulkLen = (uint8_t)USB_ReadEP(MSC_EP_OUT, BulkBuf);
switch (BulkStage) {
case MSC_BS_CBW:
MSC_GetCBW();
break;
case MSC_BS_DATA_OUT:
switch (CBW.CB[0]) {
case SCSI_WRITE10:
MSC_MemoryWrite();
break;
case SCSI_VERIFY10:
MSC_MemoryVerify();
break;
}
break;
default:
USB_SetStallEP(MSC_EP_OUT);
CSW.bStatus = CSW_PHASE_ERROR;
MSC_SetCSW();
break;
}
}
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