[RPC, ubuntu] basic_tf_stub example

[poyupaulchen]

-Platform: apollo4p
-os : ubuntu
I tried the basic_tf_stub example on ubuntu for checking whether PRC is working.
I followed the instruction // #define RPC_ENABLED in basic_tf_stub.cc and uncomment it and compile it. It seems not working.

1. NS_USB1_PRESENT below seems not existing.
   

   neuralSPOT/examples/basic_tf_stub/src/basic_tf_stub.cc

   Lines 15 to 17 in 696a2cd

   	#ifdef NS_USB1_PRESENT
   	// #define RPC_ENABLED
   	#endif

2. After I did make deploy, I can not find the ttyACM0 or ttyACM1. Usually, I can find it as below

poyupaulchen@paul:~/Documents/esc/evb$ ls -la /dev/serial/by-id
total 0
drwxr-xr-x 2 root root 80 Feb 28 17:26 .
drwxr-xr-x 4 root root 80 Feb 28 16:42 ..
lrwxrwxrwx 1 root root 13 Feb 28 16:42 usb-SEGGER_J-Link_000900030197-if00 -> ../../ttyACM0
lrwxrwxrwx 1 root root 13 Feb 28 17:26 usb-TinyUSB_TinyUSB_Device_123456-if00 -> ../../ttyACM1

[poyupaulchen]

Update:
It works now after I rewrite from

neuralSPOT/examples/basic_tf_stub/src/basic_tf_stub.cc

Lines 15 to 17 in 696a2cd

	#ifdef NS_USB1_PRESENT
	// #define RPC_ENABLED
	#endif

to

#define NS_USB1_PRESENT
#ifdef NS_USB1_PRESENT
#include "ns_rpc_generic_data.h"
size_t ucHeapSize = 8192;
extern uint8_t ucHeap[8192];
#define RPC_ENABLED 
#endif