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dcd/rusb2: fix fifo write

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Signed-off-by: HiFiPhile <admin@hifiphile.com>
This commit is contained in:
HiFiPhile
2025-12-11 23:18:34 +01:00
parent 6482079151
commit fa74d1a6e1
2 changed files with 19 additions and 10 deletions
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27
src/portable/renesas/rusb2/dcd_rusb2.c
View File

@ -213,17 +213,26 @@ static void pipe_write_packet_ff(rusb2_reg_t * rusb, tu_fifo_t *f, volatile void
tu_fifo_buffer_info_t info;
tu_fifo_get_read_info(f, &info);
uint16_t count = tu_min16(total_len, info.linear.len);
pipe_write_packet(rusb, info.linear.ptr, fifo, count);
uint16_t cnt_lin = tu_min16(total_len, info.linear.len);
uint16_t cnt_wrap = tu_min16(total_len - cnt_lin, info.wrapped.len);
uint16_t const cnt_written = cnt_lin + cnt_wrap;
uint16_t rem = total_len - count;
if (rem) {
rem = tu_min16(rem, info.wrapped.len);
pipe_write_packet(rusb, info.wrapped.ptr, fifo, rem);
count += rem;
// Ensure only the last write is odd if total_len is odd
if (cnt_wrap == 0) {
pipe_write_packet(rusb, info.linear.ptr, fifo, cnt_lin);
} else {
pipe_write_packet(rusb, info.linear.ptr, fifo, cnt_lin & ~1);
if (cnt_lin & 1) {
uint8_t glue[2] = {info.linear.ptr[cnt_lin & ~1], info.wrapped.ptr[0]};
pipe_write_packet(rusb, glue, fifo, 2);
cnt_wrap--;
info.wrapped.ptr++;
}
pipe_write_packet(rusb, info.wrapped.ptr, fifo, cnt_wrap);
}
tu_fifo_advance_read_pointer(f, count);
tu_fifo_advance_read_pointer(f, cnt_written);
}
// Read data sw fifo <-- hw fifo

2
src/tusb_option.h
View File

@ -361,7 +361,7 @@
//------------ RUSB2 --------------//
#if defined(TUP_USBIP_RUSB2)
#define CFG_TUD_EDPT_DEDICATED_HWFIFO 0 // need testing to enable
#define CFG_TUD_EDPT_DEDICATED_HWFIFO 1
#endif
//--------------------------------------------------------------------