diff options
Diffstat (limited to 'src/jtag/ftd2xx.c')
| -rw-r--r-- | src/jtag/ftd2xx.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/jtag/ftd2xx.c b/src/jtag/ftd2xx.c index e8d29a88..050f9c04 100644 --- a/src/jtag/ftd2xx.c +++ b/src/jtag/ftd2xx.c @@ -799,6 +799,8 @@ int ftd2xx_init(void) u8 latency_timer; FT_STATUS status; DWORD num_devices; + u8 buf[1]; + DWORD bytes_written; ftd2xx_layout_t *cur_layout = ftd2xx_layouts; @@ -900,6 +902,13 @@ int ftd2xx_init(void) return ERROR_JTAG_INIT_FAILED; ftd2xx_speed(jtag_speed); + + buf[0] = 0x85; /* Disconnect TDI/DO to TDO/DI for Loopback */ + if (((status = FT_Write(ftdih, buf, 1, &bytes_written)) != FT_OK) || (bytes_written != 1)) + { + ERROR("couldn't write to ftdi device: %i", status); + return ERROR_JTAG_INIT_FAILED; + } if ((status = FT_Purge(ftdih, FT_PURGE_RX | FT_PURGE_TX)) != FT_OK) { |