On-chip Debug with Cable

VPU applications may be debugged over JTAG using either DSTREAM or FTDI cables.

DSTREAM

The DSTREAM device can be used for debugging PVA applications.

FTDI Cable

Debugging with an FTDI cable requires the installation of libftd2xx.so as a system driver for the 64bit Linux host machine. This can be obtained from https://ftdichip.com/drivers/d2xx-drivers/. The library is available as a pre-compiled .so, and can be installed following the instructions in ReadMe.txt.

Launching JTALK Server with a JTAG cable

To launch a JTALK server with either of the JTAG options, use the system wide system-wide pva-sdk-2.7-jtalk command. This command allows specifying either a DSTREAM IP address or an FTDI device ID.

Note

Make sure to set required environment variables before running pva-sdk-2.7-jtalk as below:

export PVA_GEN2_ASIP_PATH=<PATH_TO_ASIP_PROGRAMMER>
export PVA_GEN3_ASIP_PATH=<PATH_TO_ASIP_PROGRAMMER>
export LM_LICENSE_FILE=<PATH_TO_LICENSE_FILE>
# Alternatively to LM_LICENSE_FILE, SNPSLMD_LICENSE_FILE can be set:
export SNPSLMD_LICENSE_FILE=<TCP_PORT>@<LICENSE_SERVER>
export RDDI_DLL_PATH=<ARMDS_INSTALL_DIR>/sw/debugger/RDDI/redistributables/linux-x86_64/gcc-4.1.2/rel # Needed only for use with DSTREAM