Introduction

Note: This example supports the AM62D-EVM-PROC180E2. To test with the AM62D-EVM-PROC180E1, change the phy addresses in TI BOARD DRIVERS -> ETHPHY -> CONFIG_ENET_ETHPHY(x) -> phy Address to 15 and 3.

This Ethernet TSN example demonstrates Dolby EC3 AVB listener instance. Here, the listerner waits for talker to send the audio stream, when the audio stream is received, it is decoded into SMPTE337 frames and copied into the memory shared with Remote Core(C7x core). The Remote Core periodically reads from the shared memory and copies into its local memory for further processing.

The below image shows the program flow for the Dolby EC3 listener application.

The get_frame337() call returns a pointer to the SMPTE337 Frame which is copied to shared memory. The C7x can read from this shared memory to get frames in SMPTE337 format which contains Dolby EC3 frames.

Supported Combinations

Parameter	Value
CPU + OS	mcu-r5fss0-0_freertos, c75ss0-0_freertos
Toolchain	ti-arm-clang
Board	am62dx-evm
Example folder	examples/networking/tsn/dolbyec3listener_app

Steps to Run the Example

Prerequisites

EVM Board
CAT6 Ethernet cable
Dolby EC3 Talker device.

Build the example

When using CCS projects to build, import the CCS project for the required combination and build it using the CCS project menu (see Using SDK with CCS Projects).
When using makefiles to build, note the required combination and build using make command (see Using SDK with Makefiles)

HW Setup

Connect the One end of the CAT6 cable to the EVM and the other end of the CAT6 cable to the talker.

Run the example

Attention: If you need to reload and run again, a CPU power-cycle is MUST.

Note: mcu-r5 program has to be started before running c7x program.

Load both mcu-r5 and c7x binaries to the evm and click on run.
Start AVB Talker if not started already.
You will see logs in the UART terminal as shown in the next section.
The print INF:avtp:[RX] frame337 wlen=6144 bits confirms the reception of Dolby EC3 payload in SMPTE337 Format.

Sample output

==========================
       TSN CPSW App
==========================
Enabling clocks!
start to open driver.
EnetAppUtils_reduceCoreMacAllocation: Reduced Mac Address Allocation for CoreId:0 From 4 To 2
 
Init all configs
----------------------------------------------
sitara-cpsw: init config
Mdio_open: MDIO Manual_Mode enabled
sitara-cpsw: Open port 1
EnetPhy_bindDriver: PHY 15: OUI:080028 Model:23 Ver:01 <-> 'dp83867' : OK
sitara-cpsw: Open port 2
PHY 15 is alive
sitara-cpsw: Create RX task for regular traffic
initQs() txFreePktInfoQ initialized with 4 pkts
MAC port addr: 70:ff:76:1d:ec:f2
Start: uniconf_task
sitara-cpsw: default RX flow started
EnetApp_uniconfTask: dbname: NULL
EnetApp_gptpYangConfig:domain=0
Start: gptp2d_task
Start: aaf_dolby_task
EnetApp_initTsn:TSN app start done!
EnetApp_gptpNonYangConfig:XL4_EXTMOD_XL4GPTP_SINGLE_CLOCK_MODE=1
EnetApp_gptpNonYangConfig:XL4_EXTMOD_XL4GPTP_USE_HW_PHASE_ADJUSTMENT=1
EnetApp_gptpNonYangConfig:XL4_EXTMOD_XL4GPTP_CLOCK_COMPUTE_INTERVAL_MSEC=100
EnetApp_gptpNonYangConfig:XL4_EXTMOD_XL4GPTP_FREQ_OFFSET_IIR_ALPHA_START_VALUE=1
EnetApp_gptpNonYangConfig:XL4_EXTMOD_XL4GPTP_FREQ_OFFSET_IIR_ALPHA_STABLE_VALUE=4
EnetApp_gptpNonYangConfig:XL4_EXTMOD_XL4GPTP_PHASE_OFFSET_IIR_ALPHA_START_VALUE=1
EnetApp_gptpNonYangConfig:XL4_EXTMOD_XL4GPTP_PHASE_OFFSET_IIR_ALPHA_STABLE_VALUE=4
EnetApp_gptpNonYangConfig:XL4_EXTMOD_XL4GPTP_MAX_DOMAIN_NUMBER=1
Waiting for GPTP ready!!
 
GPTP ready!!
 
CPSW_ALE_IOCTL_ADD_VLAN: 110
CPSW_ALE_IOCTL_ADD_VLAN: 110
Logger_task: started
unibase-1.1.4
INF:cbase:tilld0: has mac: 70:FF:76:1D:EC:F2
INF:cbase:tilld1: has mac: 00:00:00:00:00:00
INF:cbase:cb_lld_task_create: uniconf_task stack_size=16384
INF:uconf:simpledb_open:no data is imported
INF:uconf:get_next_nameid:a new mod=xl4-data, enum=0
INF:uconf:get_next_nameid:a new mod=xl4-extmod, enum=1
INF:uconf:uc_hwal_open:
INF:cbase:cb_rawsock_open:combase-1.1.3
INF:cbase:cb_rawsock_open:dmaTxChId=-1 numRxChannels=1 dmaRxChId=-1 nTxPkts=0 nRxPkts=0 pktSize=0
INF:uconf:get_next_nameid:a new mod=ietf-interfaces, enum=2
INF:uconf:get_next_nameid:a new mod=ieee1588-ptp-tt, enum=3
INF:uconf:get_next_nameid:a new mod=ieee802-dot1q-bridge, enum=4
INF:uconf:get_next_nameid:a new mod=excelfore-tsn-remote, enum=5
INF:uconf:get_next_nameid:a new mod=excelfore-netconf-server, enum=6
INF:uconf:get_next_nameid:a new mod=ietf-netconf-monitoring, enum=7
INF:uconf:get_next_nameid:a new mod=ietf-yang-library, enum=8
INF:uconf:get_next_nameid:a new mod=ieee802-dot1ab-lldp, enum=9
INF:uconf:get_INF:gptp:000000-506248:domainIndex=0, GM changed old=00:00:00:00:00:00:00:00, new=70:FF:76:FF:FE:1D:EC:F2
INF:gptp:gptpclock_set_gmsync:gptpInstanceIndex=0, domainIndex=0, gmstate=2
Cpsw_handleLinkUp: Port 1: Link up: 1-Gbps Full-Duplex
MAC Port 1: link up
INF:cbase:cbl_query_response:tilld0: link UP, speed=1000, duplex=1 !!!!
INF:gptp:index=1 speed=1000, duplex=full
      5.388s : CPU load =   8.83 %
domain=0, offset=0nsec, hw-adjrate=0ppb
        gmsync=true, last_setts64=0nsec
     10.389s : CPU load =   2.11 %
     15.390s : CPU load =   2.05 %
domain=0, offset=0nsec, hw-adjrate=0ppb
        gmsync=true, last_setts64=0nsec
     20.391s : CPU load =   2.07 %
INF:gptp:md_pdelay_resp_sm_recv_req:port=1, set receivedNonCMLDSPdelayReq=1
WRN:gptp:000024-000662:waiting_for_pdelay_interval_timer_proc:portIndex=1, sourcePortIdentity=00:68:EB:FF:FE:BC:85:09, thisClock=70:FF:76:FF:FE:1D:EC:F2, neighborPropDelay=7340
INF:gptp:waiting_for_pdelay_interval_timer_proc:portIndex=1, not asCapable
INF:gptp:waiting_for_pdelay_interval_timer_proc:set asCapableAcrossDomains, portIndex=1
INF:gptp:set asCapable for domainIndex=0, portIndex=1
INF:gptp:000025-001701:gptpgcfg_set_asCapable:domainInde=0, portIndex=1, ascapable=1
INF:gptp:000025-125373:gm_stable:gm_unstable_proc:domainIndex=0
INF:gptp:gptpclock_set_gmsync:gptpInstanceIndex=0, domainIndex=0, gmstate=1
INF:gptp:000025-125730:gm_stable:gm_unstable_proc:domainIndex=0
INF:gptp:000025-249853:setSyncTwoStep_txSync:domainIndex=0, portIndex=1, sync gap=25250msec
INF:gptp:000025-250644:setFollowUp_txFollowUp:domainIndex=0, portIndex=1, fup gap=25250msec
     25.392s : CPU load =   2.40 %
INF:gptp:000025-586573:domainIndex=0, GM changed old=70:FF:76:FF:FE:1D:EC:F2, new=00:68:EB:FF:FE:BC:85:09
INF:gptp:gptpclock_set_gmsync:gptpInstanceIndex=0, domainIndex=0, gmstate=0
INF:gptp:000025-587096:gm_stable:gm_unstable_proc:domainIndex=0
INF:gptp:gptpclock_set_gmsync:gptpInstanceIndex=0, domainIndex=0, gmstate=1
INF:gptp:set_phase_offsetGM:domainIndex=0, New adjustment(New GM?)
INF:gptp:set_phase_offsetGM:domainIndex=0, offset adjustment, diff=1729593297172961483
INF:gptp:set_phase_offsetGM:domainIndex=0, offset adjustment by Freq., diff=-11200
INF:gptp:domainIndex=0, clock_master_sync_receive:the master clock rate skip update, GMdiff=-8670nsec
INF:gptp:domainIndex=0, clock_master_sync_receive:the master clock rate skip update, GMdiff=-6050nsec
INF:avtp:avbtp_rec_ts_check:big skip from old_pts=0 to timestamp=1729593323415821858
INF:avtp:[RX] frame337 wlen=6144 bits
INF:avtp:[RX] frame337 wlen=6144 bits
INF:avtp:[RX] frame337 wlen=6144 bits
INF:avtp:[RX] frame337 wlen=6144 bits
INF:gptp:set_phase_offsetGM:domainIndex=0, stable
IFV:gptp:domainIndex=0, clock_master_sync_receive:the master clock rate to 16894ppb, GMdiff=-3500nsec
INF:avtp:[RX] frame337 wlen=6144 bits
INF:avtp:[RX] frame337 wlen=6144 bits
INF:avtp:[RX] frame337 wlen=6144 bits
INF:avtp:[RX] frame337 wlen=6144 bits
IFV:gptp:domainIndex=0, clock_master_sync_receive:the master clock rate to 34041ppb, GMdiff=-1316nsec
INF:avtp:[RX] frame337 wlen=6144 bits
INF:avtp:[RX] frame337 wlen=6144 bits
INF:avtp:[RX] frame337 wlen=6144 bits
INF:avtp:[RX] frame337 wlen=6144 bits
IFV:gptp:domainIndex=0, clock_master_sync_receive:the master clock rate to 47115ppb, GMdiff=309nsec
INF:avtp:[RX] frame337 wlen=6144 bits
INF:avtp:[RX] frame337 wlen=6144 bits
INF:avtp:[RX] frame337 wlen=6144 bits
INF:avtp:[RX] frame337 wlen=6144 bits