jackcartersmith/xilinx-usb-driver
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make sure that there is valid data if the last command in a transfer is

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a read
This commit is contained in:
michael 2007-04-29 21:50:09 +00:00
parent 9640dec9c7
commit 59b06a85e2
1 changed files with 6 additions and 0 deletions
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6
jtagkey.c
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@ -79,6 +79,7 @@ static int jtagkey_set_bbmode(unsigned char mode) {
if (bitbang_mode != mode) {
DPRINTF("switching bitbang-mode!\n");
/* Wait for the latency-timer to kick in */
usleep(2);
if ((ret = ftdi_set_bitmode(&ftdic, JTAGKEY_TCK|JTAGKEY_TDI|JTAGKEY_TMS|JTAGKEY_OEn, mode)) != 0) {
@ -236,6 +237,10 @@ int jtagkey_transfer(WD_TRANSFER *tr, int fd, unsigned int request, int ppbase,
if (nread)
{
DPRINTF("writing %d bytes\n", writepos-writebuf);
*writepos = last_data;
writepos++;
jtagkey_set_bbmode(BITMODE_SYNCBB);
ftdi_write_data(&ftdic, writebuf, writepos-writebuf);
@ -276,6 +281,7 @@ int jtagkey_transfer(WD_TRANSFER *tr, int fd, unsigned int request, int ppbase,
switch(tr[i].cmdTrans) {
case PP_READ:
data = *readpos;
#ifdef DEBUG
DPRINTF("READ: 0x%x\n", data);
jtagkey_state(data);