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Pavel Chromy, the patch fixes an issue with PRESTO & FTD2XX under Linux.

git-svn-id: svn://svn.berlios.de/openocd/trunk@466 b42882b7-edfa-0310-969c-e2dbd0fdcd60
tags/v0.1.0
oharboe 16 years ago
parent
commit
6e2acffa9c
1 changed files with 73 additions and 45 deletions
  1. +73
    -45
      src/jtag/presto.c

+ 73
- 45
src/jtag/presto.c View File

@@ -49,6 +49,8 @@
#include <ftd2xx.h>
#elif BUILD_PRESTO_LIBFTDI == 1
#include <ftdi.h>
#else
#error "BUG: either FTD2XX and LIBFTDI has to be used"
#endif


@@ -236,82 +238,106 @@ int presto_open_ftd2xx(char *req_serial)
if ((presto->status = FT_ListDevices(&numdevs, NULL, FT_LIST_NUMBER_ONLY)) != FT_OK)
{
ERROR("FT_ListDevices failed: %i", (int)presto->status);
return ERROR_JTAG_INIT_FAILED;
return ERROR_JTAG_DEVICE_ERROR;
}
DEBUG("FTDI devices available: %i", numdevs);
for (i = 0; i < numdevs; i++)
{
if (FT_Open(i, &(presto->handle)) != FT_OK)
if ((presto->status = FT_Open(i, &(presto->handle))) != FT_OK)
{
ERROR("FT_Open failed: %i", (int)presto->status);
/* this is not fatal, the device may be legitimately open by other process, hence debug message only */
DEBUG("FT_Open failed: %i", (int)presto->status);
continue;
}
DEBUG("FTDI device %i open", i);
if (FT_GetDeviceInfo(presto->handle, &device, &vidpid,
presto->serial, devname, NULL) == FT_OK)
if ((presto->status = FT_GetDeviceInfo(presto->handle, &device, &vidpid,
presto->serial, devname, NULL)) == FT_OK)
{
if (vidpid == PRESTO_VID_PID
&& (req_serial == NULL || !strcmp(presto->serial, req_serial)))
break;
}
else
DEBUG("FT_GetDeviceInfo failed: %i", presto->status);
DEBUG("FTDI device %i does not match, closing", i);
FT_Close(presto->handle);
presto->handle = (FT_HANDLE)INVALID_HANDLE_VALUE;
}

if (presto->handle == (FT_HANDLE)INVALID_HANDLE_VALUE)
return ERROR_JTAG_INIT_FAILED;
return ERROR_JTAG_DEVICE_ERROR; /* presto not open, return */

if ((presto->status = FT_SetLatencyTimer(presto->handle, 1)) != FT_OK)
return ERROR_JTAG_INIT_FAILED;
return ERROR_JTAG_DEVICE_ERROR;
if ((presto->status = FT_SetTimeouts(presto->handle, 100, 0)) != FT_OK)
return ERROR_JTAG_INIT_FAILED;
return ERROR_JTAG_DEVICE_ERROR;
if ((presto->status = FT_Purge(presto->handle, FT_PURGE_TX | FT_PURGE_RX)) != FT_OK)
return ERROR_JTAG_INIT_FAILED;
return ERROR_JTAG_DEVICE_ERROR;
presto_data = 0xD0;
if ((presto->status = FT_Write(presto->handle, &presto_data, 1, &ftbytes)) != FT_OK)
return ERROR_JTAG_INIT_FAILED;
return ERROR_JTAG_DEVICE_ERROR;
/* delay between first write/read turnaround (after purge?) necessary under Linux for unknown reason,
probably a bug in library threading */
usleep(100000);
if ((presto->status = FT_Read(presto->handle, &presto_data, 1, &ftbytes)) != FT_OK)
return ERROR_JTAG_INIT_FAILED;

return ERROR_JTAG_DEVICE_ERROR;
if (ftbytes!=1)
{
if ((presto->status = FT_SetBitMode(presto->handle, 0x80, 1)) != FT_OK)
return ERROR_JTAG_INIT_FAILED;
DEBUG("PRESTO reset");
if ((presto->status = FT_Purge(presto->handle, FT_PURGE_TX | FT_PURGE_RX)) != FT_OK)
return ERROR_JTAG_INIT_FAILED ;
return ERROR_JTAG_DEVICE_ERROR;
if ((presto->status = FT_SetBitMode(presto->handle, 0x80, 1)) != FT_OK)
return ERROR_JTAG_DEVICE_ERROR;
if ((presto->status = FT_SetBaudRate(presto->handle, 9600)) != FT_OK)
return ERROR_JTAG_INIT_FAILED;
return ERROR_JTAG_DEVICE_ERROR;

presto_data = 0;
for (i = 0; i < 4 * 62; i++)
if ((presto->status=FT_Write(presto->handle, &presto_data, 1, &ftbytes)) != FT_OK)
return ERROR_JTAG_INIT_FAILED;
return ERROR_JTAG_DEVICE_ERROR;

usleep(100000);

if ((presto->status = FT_SetBitMode(presto->handle, 0x00, 0)) != FT_OK)
return ERROR_JTAG_INIT_FAILED;
return ERROR_JTAG_DEVICE_ERROR;
if ((presto->status = FT_Purge(presto->handle, FT_PURGE_TX | FT_PURGE_RX)) != FT_OK)
return ERROR_JTAG_INIT_FAILED;
return ERROR_JTAG_DEVICE_ERROR;
presto_data = 0xD0;
if ((presto->status = FT_Write(presto->handle, &presto_data, 1, &ftbytes)) != FT_OK)
return ERROR_JTAG_INIT_FAILED;
return ERROR_JTAG_DEVICE_ERROR;
/* delay between first write/read turnaround (after purge?) necessary under Linux for unknown reason,
probably a bug in library threading */
usleep(100000);
if ((presto->status = FT_Read(presto->handle, &presto_data, 1, &ftbytes)) != FT_OK)
return ERROR_JTAG_INIT_FAILED;
return ERROR_JTAG_DEVICE_ERROR;
if (ftbytes!=1)
return ERROR_JTAG_INIT_FAILED;
{
DEBUG("PRESTO not responding");
return ERROR_JTAG_DEVICE_ERROR;
}
}

if ((presto->status = FT_SetTimeouts(presto->handle, 0, 0)) != FT_OK)
return ERROR_JTAG_INIT_FAILED;

return ERROR_JTAG_DEVICE_ERROR;
presto->status = FT_Write(presto->handle, &presto_init_seq, sizeof(presto_init_seq), &ftbytes);
if (presto->status != FT_OK)
return ERROR_JTAG_INIT_FAILED;
if (ftbytes != sizeof(presto_init_seq))
return ERROR_JTAG_INIT_FAILED;
if (presto->status != FT_OK || ftbytes != sizeof(presto_init_seq))
return ERROR_JTAG_DEVICE_ERROR;

return ERROR_OK;
}
@@ -328,32 +354,32 @@ int presto_open_libftdi(char *req_serial)
if (ftdi_usb_open_desc(&presto->ftdic, PRESTO_VID, PRESTO_PID, NULL, req_serial) < 0)
{
ERROR("unable to open presto: %s", presto->ftdic.error_str);
return ERROR_JTAG_INIT_FAILED;
return ERROR_JTAG_DEVICE_ERROR;
}
if (ftdi_usb_reset(&presto->ftdic) < 0)
{
ERROR("unable to reset presto device");
return ERROR_JTAG_INIT_FAILED;
return ERROR_JTAG_DEVICE_ERROR;
}

if (ftdi_set_latency_timer(&presto->ftdic, 1) < 0)
{
ERROR("unable to set latency timer");
return ERROR_JTAG_INIT_FAILED;
return ERROR_JTAG_DEVICE_ERROR;
}

if (ftdi_usb_purge_buffers(&presto->ftdic) < 0)
{
ERROR("unable to purge presto buffer");
return ERROR_JTAG_INIT_FAILED;
return ERROR_JTAG_DEVICE_ERROR;
}
presto_data = 0xD0;
if ((presto->retval = presto_write(&presto_data, 1, &ftbytes)) != ERROR_OK)
return ERROR_JTAG_INIT_FAILED;
return ERROR_JTAG_DEVICE_ERROR;
if ((presto->retval = presto_read(&presto_data, 1, &ftbytes)) != ERROR_OK)
return ERROR_JTAG_INIT_FAILED;
return ERROR_JTAG_DEVICE_ERROR;
return ERROR_OK;
}
@@ -386,23 +412,25 @@ int presto_close(void)

int result = ERROR_OK;

#if BUID_PRESTO_FTD2XX == 1
#if BUILD_PRESTO_FTD2XX == 1
unsigned long ftbytes;

if (presto->handle == (FT_HANDLE)INVALID_HANDLE_VALUE)
return result;

presto->status = FT_Write(presto->handle, &presto_init_seq, sizeof(presto_init_seq), &ftbytes);
presto->status = FT_Purge(presto->handle, FT_PURGE_TX | FT_PURGE_RX);
if (presto->status != FT_OK)
result = PRST_ERR;
if (ftbytes != sizeof(presto_init_seq))
result = PRST_TIMEOUT;
result = ERROR_JTAG_DEVICE_ERROR;

presto->status = FT_Write(presto->handle, &presto_init_seq, sizeof(presto_init_seq), &ftbytes);
if (presto->status != FT_OK || ftbytes != sizeof(presto_init_seq))
result = ERROR_JTAG_DEVICE_ERROR;

if ((presto->status = FT_SetLatencyTimer(presto->handle, 16)) != FT_OK)
result = PRST_ERR;
result = ERROR_JTAG_DEVICE_ERROR;

if ((presto->status = FT_Close(presto->handle)) != FT_OK)
result = PRST_ERR;
result = ERROR_JTAG_DEVICE_ERROR;
else
presto->handle = (FT_HANDLE)INVALID_HANDLE_VALUE;
@@ -419,7 +447,7 @@ int presto_close(void)
}
ftdi_deinit(&presto->ftdic);
#endif

return result;


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