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lpc17xx_usb.c
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lpc17xx_usb.c
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/*****************************************************************************
* *
* DFU/SD/SDHC Bootloader for LPC17xx *
* *
* by Triffid Hunter *
* *
* *
* This firmware is Copyright (C) 2009-2010 Michael Moon aka Triffid_Hunter *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software *
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA *
* *
*****************************************************************************/
#include "lpc17xx_usb.h"
#ifdef __cplusplus
extern "C"
{
#endif
#include <LPC17xx.h>
void SIE_CMD(uint8_t cmd)
{
LPC_USB->USBDevIntClr = CCEMPTY | CDFULL;
LPC_USB->USBCmdCode = CMD_CODE(cmd) | CMD_PHASE_COMMAND;
while (!(LPC_USB->USBDevIntSt & CCEMPTY));
// LPC_USB->USBDevIntClr = CCEMPTY;
}
uint8_t SIE_CMD_READ(uint8_t cmd)
{
LPC_USB->USBDevIntClr = CDFULL;
LPC_USB->USBCmdCode = CMD_CODE(cmd) | CMD_PHASE_READ;
while (!(LPC_USB->USBDevIntSt & CDFULL));
// LPC_USB->USBDevIntClr = CDFULL;
return LPC_USB->USBCmdData;
}
void SIE_CMD_WRITE(uint8_t data)
{
LPC_USB->USBDevIntClr = CCEMPTY;
LPC_USB->USBCmdCode = CMD_WDATA(data) | CMD_PHASE_WRITE;
while (!(LPC_USB->USBDevIntSt & CCEMPTY));
// LPC_USB->USBDevIntClr = CCEMPTY;
}
void SIE_SetAddress(uint8_t address)
{
__disable_irq();
SIE_CMD(SIE_DEV_CMD_SetAddress);
SIE_CMD_WRITE((address & SIE_SETADDR_DEV_ADDR_MASK) | SIE_SETADDR_DEV_EN);
__enable_irq();
}
void SIE_ConfigureDevice(uint8_t conf_device)
{
__disable_irq();
SIE_CMD(SIE_DEV_CMD_Configure);
SIE_CMD_WRITE(conf_device);
__enable_irq();
}
void SIE_SetMode(uint8_t mode)
{
__disable_irq();
SIE_CMD(SIE_DEV_CMD_SetMode);
SIE_CMD_WRITE(mode);
__enable_irq();
}
uint16_t SIE_ReadCurrentFrameNumber(void)
{
uint16_t r;
__disable_irq();
SIE_CMD(SIE_DEV_CMD_ReadFrameNo);
r = SIE_CMD_READ(SIE_DEV_CMD_ReadFrameNo);
r |= SIE_CMD_READ(SIE_DEV_CMD_ReadFrameNo) << 8;
__enable_irq();
return r;
}
uint16_t SIE_ReadTestRegister(void)
{
uint16_t r;
__disable_irq();
SIE_CMD(SIE_DEV_CMD_ReadTestReg);
r = SIE_CMD_READ(SIE_DEV_CMD_ReadTestReg);
r |= SIE_CMD_READ(SIE_DEV_CMD_ReadTestReg) << 8;
__enable_irq();
return r;
}
void SIE_SetDeviceStatus(uint8_t status)
{
__disable_irq();
SIE_CMD(SIE_DEV_CMD_SetDevStatus);
SIE_CMD_WRITE(status);
__enable_irq();
}
uint8_t SIE_GetDeviceStatus(void)
{
uint8_t r;
__disable_irq();
SIE_CMD(SIE_DEV_CMD_GetDevStatus);
r = SIE_CMD_READ(SIE_DEV_CMD_GetDevStatus);
__enable_irq();
return r;
}
uint8_t SIE_GetErrorCode(void)
{
uint8_t r;
__disable_irq();
SIE_CMD(SIE_DEV_CMD_GetErrorCode);
r = SIE_CMD_READ(SIE_DEV_CMD_GetErrorCode);
__enable_irq();
return r;
}
uint8_t SIE_ReadErrorStatus(void)
{
uint8_t r;
__disable_irq();
SIE_CMD(SIE_DEV_CMD_ReadErrorSt);
r = SIE_CMD_READ(SIE_DEV_CMD_ReadErrorSt);
__enable_irq();
return r;
}
// endpoint commands
uint8_t SIE_SelectEndpoint(uint8_t bEP)
{
uint8_t r;
__disable_irq();
SIE_CMD(SIE_EP_CMD_Select | (EP2IDX(bEP) & 0x1F));
r = SIE_CMD_READ(SIE_EP_CMD_Select | (EP2IDX(bEP) & 0x1F));
__enable_irq();
return r;
}
uint8_t SIE_SelectEndpointClearInterrupt(uint8_t bEP)
{
uint8_t r;
__disable_irq();
// SIE_CMD(SIE_EP_CMD_SelectClearInt | (EP2IDX(bEP) & 0x1F));
// r = SIE_CMD_READ(SIE_EP_CMD_SelectClearInt | (EP2IDX(bEP) & 0x1F));
LPC_USB->USBEpIntClr = EP(bEP);
while (!(LPC_USB->USBDevIntSt & CDFULL));
r = LPC_USB->USBCmdData;
__enable_irq();
return r;
}
void SIE_SetEndpointStatus(uint8_t bEP, uint8_t status)
{
__disable_irq();
SIE_CMD(SIE_EP_CMD_SetEpStatus | (EP2IDX(bEP) & 0x1F));
SIE_CMD_WRITE(status);
__enable_irq();
}
uint8_t SIE_ClearBuffer(void)
{
uint8_t r;
__disable_irq();
SIE_CMD(SIE_EP_CMD_ClearBuffer);
r = SIE_CMD_READ(SIE_EP_CMD_ClearBuffer);
__enable_irq();
return r;
}
void SIE_ValidateBuffer(void)
{
__disable_irq();
SIE_CMD(SIE_EP_CMD_ValidateBuffer);
__enable_irq();
}
void SIE_Connect(void)
{
uint8_t status = SIE_GetDeviceStatus();
SIE_SetDeviceStatus(status | SIE_DEVSTAT_CON);
}
void SIE_Disconnect(void)
{
uint8_t status = SIE_GetDeviceStatus();
SIE_SetDeviceStatus(status & ~SIE_DEVSTAT_CON);
}
#ifdef __cplusplus
} /* extern "C" */
#endif