volatile void *flashcdw_memset64(volatile void *dst, uint64_t src, size_t nbytes, bool erase)
{
// Use aggregated pointers to have several alignments available for a same address.
UnionCVPtr flash_array_end;
UnionVPtr dest;
Union64 source = {0};
StructCVPtr dest_end;
UnionCVPtr flash_page_source_end;
bool incomplete_flash_page_end;
Union64 flash_dword;
UnionVPtr tmp;
unsigned int error_status = 0;
unsigned int i;
// Reformat arguments.
flash_array_end.u8ptr = AVR32_FLASH + flashcdw_get_flash_size();
dest.u8ptr = dst;
for (i = (Get_align((uint32_t)dest.u8ptr, sizeof(uint64_t)) - 1) & (sizeof(uint64_t) - 1);
src; i = (i - 1) & (sizeof(uint64_t) - 1)) {
source.u8[i] = src;
src >>= 8;
}
dest_end.u8ptr = dest.u8ptr + nbytes;
// If destination is outside flash, go to next flash page if any.
if (dest.u8ptr < AVR32_FLASH) {
dest.u8ptr = AVR32_FLASH;
} else if (flash_array_end.u8ptr <= dest.u8ptr && dest.u8ptr < AVR32_FLASHCDW_USER_PAGE) {
dest.u8ptr = AVR32_FLASHCDW_USER_PAGE;
}
// If end of destination is outside flash, move it to the end of the previous flash page if any.
if (dest_end.u8ptr > AVR32_FLASHCDW_USER_PAGE + AVR32_FLASHCDW_USER_PAGE_SIZE) {
dest_end.u8ptr = AVR32_FLASHCDW_USER_PAGE + AVR32_FLASHCDW_USER_PAGE_SIZE;
} else if (AVR32_FLASHCDW_USER_PAGE >= dest_end.u8ptr && dest_end.u8ptr > flash_array_end.u8ptr) {
dest_end.u8ptr = flash_array_end.u8ptr;
}
// Align each end of destination pointer with its natural boundary.
dest_end.u16ptr = (uint16_t *)Align_down((uint32_t)dest_end.u8ptr, sizeof(uint16_t));
dest_end.u32ptr = (uint32_t *)Align_down((uint32_t)dest_end.u16ptr, sizeof(uint32_t));
dest_end.u64ptr = (uint64_t *)Align_down((uint32_t)dest_end.u32ptr, sizeof(uint64_t));
// While end of destination is not reached...
while (dest.u8ptr < dest_end.u8ptr) {
// Clear the page buffer in order to prepare data for a flash page write.
flashcdw_clear_page_buffer();
error_status |= flashcdw_error_status;
// Determine where the source data will end in the current flash page.
flash_page_source_end.u64ptr = (uint64_t *)min((uint32_t)dest_end.u64ptr,
Align_down((uint32_t)dest.u8ptr, AVR32_FLASHCDW_PAGE_SIZE) + AVR32_FLASHCDW_PAGE_SIZE);
// Determine if the current destination page has an incomplete end.
incomplete_flash_page_end = (Align_down((uint32_t)dest.u8ptr, AVR32_FLASHCDW_PAGE_SIZE) >=
Align_down((uint32_t)dest_end.u8ptr, AVR32_FLASHCDW_PAGE_SIZE));
// Use a flash double-word buffer to manage unaligned accesses.
flash_dword.u64 = source.u64;
// If destination does not point to the beginning of the current flash page...
if (!Test_align((uint32_t)dest.u8ptr, AVR32_FLASHCDW_PAGE_SIZE)) {
// Fill the beginning of the page buffer with the current flash page data.
// This is required by the hardware, even if page erase is not requested,
// in order to be able to write successfully to erased parts of flash
// pages that have already been written to.
for (tmp.u8ptr = (uint8_t *)Align_down((uint32_t)dest.u8ptr, AVR32_FLASHCDW_PAGE_SIZE);
tmp.u64ptr < (uint64_t *)Align_down((uint32_t)dest.u8ptr, sizeof(uint64_t));
tmp.u64ptr++) {
*tmp.u32ptr = *tmp.u32ptr;
*(tmp.u32ptr+1) = *(tmp.u32ptr+1);
}
// If destination is not 64-bit aligned...
if (!Test_align((uint32_t)dest.u8ptr, sizeof(uint64_t))) {
// Fill the beginning of the flash double-word buffer with the current
// flash page data.
// This is required by the hardware, even if page erase is not
// requested, in order to be able to write successfully to erased parts
// of flash pages that have already been written to.
for (i = 0; i < Get_align((uint32_t)dest.u8ptr, sizeof(uint64_t)); i++) {
flash_dword.u8[i] = *tmp.u8ptr++;
}
// Align the destination pointer with its 64-bit boundary.
dest.u64ptr = (uint64_t *)Align_down((uint32_t)dest.u8ptr, sizeof(uint64_t));
// If the current destination double-word is not the last one...
if (dest.u64ptr < dest_end.u64ptr) {
// Write the flash double-word buffer to the page buffer and reinitialize it.
*dest.u32ptr++ = flash_dword.u32[0];
*dest.u32ptr++ = flash_dword.u32[1];
flash_dword.u64 = source.u64;
}
}
}
// Write the source data to the page buffer with 64-bit alignment.
for (i = flash_page_source_end.u64ptr - dest.u64ptr; i; i--) {
*dest.u32ptr++ = source.u32[0];
*dest.u32ptr++ = source.u32[1];
}
// If the current destination page has an incomplete end...
if (incomplete_flash_page_end) {
// This is required by the hardware, even if page erase is not requested,
// in order to be able to write successfully to erased parts of flash
// pages that have already been written to.
{
tmp.u8ptr = (volatile uint8_t *)dest_end.u8ptr;
// If end of destination is not 64-bit aligned...
if (!Test_align((uint32_t)dest_end.u8ptr, sizeof(uint64_t))) {
// Fill the end of the flash double-word buffer with the current flash page data.
for (i = Get_align((uint32_t)dest_end.u8ptr, sizeof(uint64_t)); i < sizeof(uint64_t); i++) {
flash_dword.u8[i] = *tmp.u8ptr++;
}
// Write the flash double-word buffer to the page buffer.
*dest.u32ptr++ = flash_dword.u32[0];
*dest.u32ptr++ = flash_dword.u32[1];
}
// Fill the end of the page buffer with the current flash page data.
for (; !Test_align((uint32_t)tmp.u64ptr, AVR32_FLASHCDW_PAGE_SIZE); tmp.u64ptr++) {
*tmp.u32ptr = *tmp.u32ptr;
*(tmp.u32ptr+1) = *(tmp.u32ptr+1);
}
}
}
// If the current flash page is in the flash array...
if (dest.u8ptr <= AVR32_FLASHCDW_USER_PAGE) {
// Erase the current page if requested and write it from the page buffer.
if (erase) {
flashcdw_erase_page(-1, false);
error_status |= flashcdw_error_status;
}
flashcdw_write_page(-1);
error_status |= flashcdw_error_status;
// If the end of the flash array is reached, go to the User page.
if (dest.u8ptr >= flash_array_end.u8ptr) {
dest.u8ptr = AVR32_FLASHCDW_USER_PAGE;
}
} else {
// Erase the User page if requested and write it from the page buffer.
if (erase) {
flashcdw_erase_user_page(false);
error_status |= flashcdw_error_status;
}
flashcdw_write_user_page();
error_status |= flashcdw_error_status;
}
}
// Update the FLASHC error status.
flashcdw_error_status = error_status;
// Return the initial destination pointer as the standard memset function does.
return dst;
}
//! host_read_p_rxpacket
//!
//! This function reads the selected pipe FIFO to the buffer pointed to by
//! rxbuf, using as few accesses as possible.
//!
//! @param p Number of the addressed pipe
//! @param rxbuf Address of buffer to write
//! @param data_length Number of bytes to read
//! @param prxbuf NULL or pointer to the buffer address to update
//!
//! @return Number of read bytes
//!
//! @note The selected pipe FIFO may be read in several steps by calling
//! host_read_p_rxpacket several times.
//!
//! @warning Invoke Host_reset_pipe_fifo_access before this function when at
//! FIFO beginning whether or not the FIFO is to be read in several steps.
//!
//! @warning Do not mix calls to this function with calls to indexed macros.
//!
U32 host_read_p_rxpacket(U8 p, void *rxbuf, U32 data_length, void **prxbuf)
{
// Use aggregated pointers to have several alignments available for a same address
UnionCVPtr p_fifo;
UnionPtr rxbuf_cur;
#if (!defined __OPTIMIZE_SIZE__) || !__OPTIMIZE_SIZE__ // Auto-generated when GCC's -Os command option is used
StructCPtr rxbuf_end;
#else
UnionCPtr rxbuf_end;
#endif // !__OPTIMIZE_SIZE__
// Initialize pointers for copy loops and limit the number of bytes to copy
p_fifo.u8ptr = pep_fifo[p].u8ptr;
rxbuf_cur.u8ptr = rxbuf;
rxbuf_end.u8ptr = rxbuf_cur.u8ptr + min(data_length, Host_byte_count(p));
#if (!defined __OPTIMIZE_SIZE__) || !__OPTIMIZE_SIZE__ // Auto-generated when GCC's -Os command option is used
rxbuf_end.u16ptr = (U16 *)Align_down((U32)rxbuf_end.u8ptr, sizeof(U16));
rxbuf_end.u32ptr = (U32 *)Align_down((U32)rxbuf_end.u16ptr, sizeof(U32));
rxbuf_end.u64ptr = (U64 *)Align_down((U32)rxbuf_end.u32ptr, sizeof(U64));
// If all addresses are aligned the same way with respect to 16-bit boundaries
if (Get_align((U32)rxbuf_cur.u8ptr, sizeof(U16)) == Get_align((U32)p_fifo.u8ptr, sizeof(U16)))
{
// If pointer to reception buffer is not 16-bit aligned
if (!Test_align((U32)rxbuf_cur.u8ptr, sizeof(U16)))
{
// Copy 8-bit data to reach 16-bit alignment
if (rxbuf_cur.u8ptr < rxbuf_end.u8ptr)
{
// 8-bit accesses to FIFO data registers do require pointer post-increment
*rxbuf_cur.u8ptr++ = *p_fifo.u8ptr++;
}
}
// If all addresses are aligned the same way with respect to 32-bit boundaries
if (Get_align((U32)rxbuf_cur.u16ptr, sizeof(U32)) == Get_align((U32)p_fifo.u16ptr, sizeof(U32)))
{
// If pointer to reception buffer is not 32-bit aligned
if (!Test_align((U32)rxbuf_cur.u16ptr, sizeof(U32)))
{
// Copy 16-bit data to reach 32-bit alignment
if (rxbuf_cur.u16ptr < rxbuf_end.u16ptr)
{
// 16-bit accesses to FIFO data registers do require pointer post-increment
*rxbuf_cur.u16ptr++ = *p_fifo.u16ptr++;
}
}
// If pointer to reception buffer is not 64-bit aligned
if (!Test_align((U32)rxbuf_cur.u32ptr, sizeof(U64)))
{
// Copy 32-bit data to reach 64-bit alignment
if (rxbuf_cur.u32ptr < rxbuf_end.u32ptr)
{
// 32-bit accesses to FIFO data registers do not require pointer post-increment
*rxbuf_cur.u32ptr++ = *p_fifo.u32ptr;
}
}
// Copy 64-bit-aligned data
while (rxbuf_cur.u64ptr < rxbuf_end.u64ptr)
{
// 64-bit accesses to FIFO data registers do not require pointer post-increment
*rxbuf_cur.u64ptr++ = *p_fifo.u64ptr;
}
// Copy 32-bit-aligned data
if (rxbuf_cur.u32ptr < rxbuf_end.u32ptr)
{
// 32-bit accesses to FIFO data registers do not require pointer post-increment
*rxbuf_cur.u32ptr++ = *p_fifo.u32ptr;
}
}
// Copy remaining 16-bit data if some
while (rxbuf_cur.u16ptr < rxbuf_end.u16ptr)
{
// 16-bit accesses to FIFO data registers do require pointer post-increment
*rxbuf_cur.u16ptr++ = *p_fifo.u16ptr++;
}
}
#endif // !__OPTIMIZE_SIZE__
// Copy remaining 8-bit data if some
while (rxbuf_cur.u8ptr < rxbuf_end.u8ptr)
{
// 8-bit accesses to FIFO data registers do require pointer post-increment
*rxbuf_cur.u8ptr++ = *p_fifo.u8ptr++;
}
// Save current position in FIFO data register
pep_fifo[p].u8ptr = (volatile U8 *)p_fifo.u8ptr;
// Return the updated buffer address and the number of copied bytes
if (prxbuf) *prxbuf = rxbuf_cur.u8ptr;
return (rxbuf_cur.u8ptr - (U8 *)rxbuf);
}
volatile void* flashc_memcpy (volatile void* dst, const void* src, size_t nbytes, Bool erase)
{
// Use aggregated pointers to have several alignments available for a same address.
UnionCVPtr flash_array_end;
UnionVPtr dest;
UnionCPtr source;
StructCVPtr dest_end;
UnionCVPtr flash_page_source_end;
Bool incomplete_flash_page_end;
Union64 flash_dword;
Bool flash_dword_pending = FALSE;
UnionVPtr tmp;
unsigned int error_status = 0;
unsigned int i, j;
// Reformat arguments.
flash_array_end.u8ptr = AVR32_FLASH + flashc_get_flash_size ();
dest.u8ptr = dst;
source.u8ptr = src;
dest_end.u8ptr = dest.u8ptr + nbytes;
// If destination is outside flash, go to next flash page if any.
if (dest.u8ptr < AVR32_FLASH)
{
source.u8ptr += AVR32_FLASH - dest.u8ptr;
dest.u8ptr = AVR32_FLASH;
}
else if (flash_array_end.u8ptr <= dest.u8ptr && dest.u8ptr < AVR32_FLASHC_USER_PAGE)
{
source.u8ptr += AVR32_FLASHC_USER_PAGE - dest.u8ptr;
dest.u8ptr = AVR32_FLASHC_USER_PAGE;
}
// If end of destination is outside flash, move it to the end of the previous flash page if any.
if (dest_end.u8ptr > AVR32_FLASHC_USER_PAGE + AVR32_FLASHC_USER_PAGE_SIZE)
{
dest_end.u8ptr = AVR32_FLASHC_USER_PAGE + AVR32_FLASHC_USER_PAGE_SIZE;
}
else if (AVR32_FLASHC_USER_PAGE >= dest_end.u8ptr && dest_end.u8ptr > flash_array_end.u8ptr)
{
dest_end.u8ptr = flash_array_end.u8ptr;
}
// Align each end of destination pointer with its natural boundary.
dest_end.u16ptr = (U16 *) Align_down ((U32) dest_end.u8ptr, sizeof (U16));
dest_end.u32ptr = (U32 *) Align_down ((U32) dest_end.u16ptr, sizeof (U32));
dest_end.u64ptr = (U64 *) Align_down ((U32) dest_end.u32ptr, sizeof (U64));
// While end of destination is not reached...
while (dest.u8ptr < dest_end.u8ptr)
{
// Clear the page buffer in order to prepare data for a flash page write.
flashc_clear_page_buffer ();
error_status |= flashc_error_status;
// Determine where the source data will end in the current flash page.
flash_page_source_end.u64ptr =
(U64 *) min ((U32) dest_end.u64ptr, Align_down ((U32) dest.u8ptr, AVR32_FLASHC_PAGE_SIZE) + AVR32_FLASHC_PAGE_SIZE);
// Determine if the current destination page has an incomplete end.
incomplete_flash_page_end = (Align_down ((U32) dest.u8ptr, AVR32_FLASHC_PAGE_SIZE) >=
Align_down ((U32) dest_end.u8ptr, AVR32_FLASHC_PAGE_SIZE));
// If destination does not point to the beginning of the current flash page...
if (!Test_align ((U32) dest.u8ptr, AVR32_FLASHC_PAGE_SIZE))
{
// Fill the beginning of the page buffer with the current flash page data.
// This is required by the hardware, even if page erase is not requested,
// in order to be able to write successfully to erased parts of flash
// pages that have already been written to.
for (tmp.u8ptr = (U8 *) Align_down ((U32) dest.u8ptr, AVR32_FLASHC_PAGE_SIZE);
tmp.u64ptr < (U64 *) Align_down ((U32) dest.u8ptr, sizeof (U64)); tmp.u64ptr++)
*tmp.u64ptr = *tmp.u64ptr;
// If destination is not 64-bit aligned...
if (!Test_align ((U32) dest.u8ptr, sizeof (U64)))
{
// Fill the beginning of the flash double-word buffer with the current
// flash page data.
// This is required by the hardware, even if page erase is not
// requested, in order to be able to write successfully to erased parts
// of flash pages that have already been written to.
for (i = 0; i < Get_align ((U32) dest.u8ptr, sizeof (U64)); i++)
flash_dword.u8[i] = *tmp.u8ptr++;
// Fill the end of the flash double-word buffer with the source data.
for (; i < sizeof (U64); i++)
flash_dword.u8[i] = *source.u8ptr++;
// Align the destination pointer with its 64-bit boundary.
dest.u64ptr = (U64 *) Align_down ((U32) dest.u8ptr, sizeof (U64));
// If the current destination double-word is not the last one...
if (dest.u64ptr < dest_end.u64ptr)
{
// Write the flash double-word buffer to the page buffer.
*dest.u64ptr++ = flash_dword.u64;
}
// If the current destination double-word is the last one, the flash
// double-word buffer must be kept for later.
else
flash_dword_pending = TRUE;
}
}
// Read the source data with the maximal possible alignment and write it to
// the page buffer with 64-bit alignment.
switch (Get_align ((U32) source.u8ptr, sizeof (U32)))
{
case 0:
for (i = flash_page_source_end.u64ptr - dest.u64ptr; i; i--)
*dest.u64ptr++ = *source.u64ptr++;
break;
case sizeof (U16):
for (i = flash_page_source_end.u64ptr - dest.u64ptr; i; i--)
{
for (j = 0; j < sizeof (U64) / sizeof (U16); j++)
flash_dword.u16[j] = *source.u16ptr++;
*dest.u64ptr++ = flash_dword.u64;
}
break;
default:
for (i = flash_page_source_end.u64ptr - dest.u64ptr; i; i--)
{
for (j = 0; j < sizeof (U64); j++)
flash_dword.u8[j] = *source.u8ptr++;
*dest.u64ptr++ = flash_dword.u64;
}
}
// If the current destination page has an incomplete end...
if (incomplete_flash_page_end)
{
// If the flash double-word buffer is in use, do not initialize it.
if (flash_dword_pending)
i = Get_align ((U32) dest_end.u8ptr, sizeof (U64));
// If the flash double-word buffer is free...
else
{
// Fill the beginning of the flash double-word buffer with the source data.
for (i = 0; i < Get_align ((U32) dest_end.u8ptr, sizeof (U64)); i++)
flash_dword.u8[i] = *source.u8ptr++;
}
// This is required by the hardware, even if page erase is not requested,
// in order to be able to write successfully to erased parts of flash
// pages that have already been written to.
{
tmp.u8ptr = (volatile U8 *) dest_end.u8ptr;
// If end of destination is not 64-bit aligned...
if (!Test_align ((U32) dest_end.u8ptr, sizeof (U64)))
{
// Fill the end of the flash double-word buffer with the current flash page data.
for (; i < sizeof (U64); i++)
flash_dword.u8[i] = *tmp.u8ptr++;
// Write the flash double-word buffer to the page buffer.
*dest.u64ptr++ = flash_dword.u64;
}
// Fill the end of the page buffer with the current flash page data.
for (; !Test_align ((U32) tmp.u64ptr, AVR32_FLASHC_PAGE_SIZE); tmp.u64ptr++)
*tmp.u64ptr = *tmp.u64ptr;
}
}
// If the current flash page is in the flash array...
if (dest.u8ptr <= AVR32_FLASHC_USER_PAGE)
{
// Erase the current page if requested and write it from the page buffer.
if (erase)
{
flashc_erase_page (-1, FALSE);
error_status |= flashc_error_status;
}
flashc_write_page (-1);
error_status |= flashc_error_status;
// If the end of the flash array is reached, go to the User page.
if (dest.u8ptr >= flash_array_end.u8ptr)
{
source.u8ptr += AVR32_FLASHC_USER_PAGE - dest.u8ptr;
dest.u8ptr = AVR32_FLASHC_USER_PAGE;
}
}
// If the current flash page is the User page...
else
{
// Erase the User page if requested and write it from the page buffer.
if (erase)
{
flashc_erase_user_page (FALSE);
error_status |= flashc_error_status;
}
flashc_write_user_page ();
error_status |= flashc_error_status;
}
}
// Update the FLASHC error status.
flashc_error_status = error_status;
// Return the initial destination pointer as the standard memcpy function does.
return dst;
}
//! usb_write_ep_txpacket
//!
//! This function writes the buffer pointed to by txbuf to the selected
//! endpoint FIFO, using as few accesses as possible.
//!
//! @param ep Number of the addressed endpoint
//! @param txbuf Address of buffer to read
//! @param data_length Number of bytes to write
//! @param ptxbuf NULL or pointer to the buffer address to update
//!
//! @return Number of non-written bytes
//!
//! @note The selected endpoint FIFO may be written in several steps by calling
//! usb_write_ep_txpacket several times.
//!
//! @warning Invoke Usb_reset_endpoint_fifo_access before this function when at
//! FIFO beginning whether or not the FIFO is to be written in several steps.
//!
//! @warning Do not mix calls to this function with calls to indexed macros.
//!
U32 usb_write_ep_txpacket(U8 ep, const void *txbuf, U32 data_length, const void **ptxbuf)
{
// Use aggregated pointers to have several alignments available for a same address
UnionVPtr ep_fifo;
UnionCPtr txbuf_cur;
#if (!defined __OPTIMIZE_SIZE__) || !__OPTIMIZE_SIZE__ // Auto-generated when GCC's -Os command option is used
StructCPtr txbuf_end;
#else
UnionCPtr txbuf_end;
#endif // !__OPTIMIZE_SIZE__
// Initialize pointers for copy loops and limit the number of bytes to copy
ep_fifo.u8ptr = pep_fifo[ep].u8ptr;
txbuf_cur.u8ptr = txbuf;
txbuf_end.u8ptr = txbuf_cur.u8ptr +
min(data_length, Usb_get_endpoint_size(ep) - Usb_byte_count(ep));
#if (!defined __OPTIMIZE_SIZE__) || !__OPTIMIZE_SIZE__ // Auto-generated when GCC's -Os command option is used
txbuf_end.u16ptr = (U16 *)Align_down((U32)txbuf_end.u8ptr, sizeof(U16));
txbuf_end.u32ptr = (U32 *)Align_down((U32)txbuf_end.u16ptr, sizeof(U32));
txbuf_end.u64ptr = (U64 *)Align_down((U32)txbuf_end.u32ptr, sizeof(U64));
// If all addresses are aligned the same way with respect to 16-bit boundaries
if (Get_align((U32)txbuf_cur.u8ptr, sizeof(U16)) == Get_align((U32)ep_fifo.u8ptr, sizeof(U16)))
{
// If pointer to transmission buffer is not 16-bit aligned
if (!Test_align((U32)txbuf_cur.u8ptr, sizeof(U16)))
{
// Copy 8-bit data to reach 16-bit alignment
if (txbuf_cur.u8ptr < txbuf_end.u8ptr)
{
// 8-bit accesses to FIFO data registers do require pointer post-increment
*ep_fifo.u8ptr++ = *txbuf_cur.u8ptr++;
}
}
// If all addresses are aligned the same way with respect to 32-bit boundaries
if (Get_align((U32)txbuf_cur.u16ptr, sizeof(U32)) == Get_align((U32)ep_fifo.u16ptr, sizeof(U32)))
{
// If pointer to transmission buffer is not 32-bit aligned
if (!Test_align((U32)txbuf_cur.u16ptr, sizeof(U32)))
{
// Copy 16-bit data to reach 32-bit alignment
if (txbuf_cur.u16ptr < txbuf_end.u16ptr)
{
// 16-bit accesses to FIFO data registers do require pointer post-increment
*ep_fifo.u16ptr++ = *txbuf_cur.u16ptr++;
}
}
// If pointer to transmission buffer is not 64-bit aligned
if (!Test_align((U32)txbuf_cur.u32ptr, sizeof(U64)))
{
// Copy 32-bit data to reach 64-bit alignment
if (txbuf_cur.u32ptr < txbuf_end.u32ptr)
{
// 32-bit accesses to FIFO data registers do not require pointer post-increment
*ep_fifo.u32ptr = *txbuf_cur.u32ptr++;
}
}
// Copy 64-bit-aligned data
while (txbuf_cur.u64ptr < txbuf_end.u64ptr)
{
// 64-bit accesses to FIFO data registers do not require pointer post-increment
*ep_fifo.u64ptr = *txbuf_cur.u64ptr++;
}
// Copy 32-bit-aligned data
if (txbuf_cur.u32ptr < txbuf_end.u32ptr)
{
// 32-bit accesses to FIFO data registers do not require pointer post-increment
*ep_fifo.u32ptr = *txbuf_cur.u32ptr++;
}
}
// Copy remaining 16-bit data if some
while (txbuf_cur.u16ptr < txbuf_end.u16ptr)
{
// 16-bit accesses to FIFO data registers do require pointer post-increment
*ep_fifo.u16ptr++ = *txbuf_cur.u16ptr++;
}
}
#endif // !__OPTIMIZE_SIZE__
// Copy remaining 8-bit data if some
while (txbuf_cur.u8ptr < txbuf_end.u8ptr)
{
// 8-bit accesses to FIFO data registers do require pointer post-increment
*ep_fifo.u8ptr++ = *txbuf_cur.u8ptr++;
}
// Save current position in FIFO data register
pep_fifo[ep].u8ptr = ep_fifo.u8ptr;
// Return the updated buffer address and the number of non-copied bytes
if (ptxbuf) *ptxbuf = txbuf_cur.u8ptr;
return data_length - (txbuf_cur.u8ptr - (U8 *)txbuf);
}