RV bring-up: RVT "system time" heartbeat messages now get printed every 20 s! The problem was a slight Nucleus API incompatibility between what the RVF code from TCS211 expected and what our FreeNucleus implements: in the TCS211 version of Nucleus it was OK to pass 0 for the initial_time parameter to NU_Create_Timer(), but our version flags such usage as an error. RVF used 0 as the dummy initial_time value when initializing the legacy RV timers with NU_DISABLE_TIMER. Implemented fix: using a dummy value of 1 instead.

#include "types.h"
#include "romvars.h"

extern struct boot_rom_vars rom_vars;

extern char *uart_name;

main()
{
	uart_select_init();
	printf("Hello-world demo app running\n");
	printf("Loaded via UART %d (%s) at baud rate #%d\n", rom_vars.uart_id,
		uart_name, rom_vars.baud_rate_code);
	printf("TCXO clock input autodetected to be %d MHz\n",
		rom_vars.clktcxo_13mhz ? 13 : 26);
	for (;;) {
		putchar('=');
		if (command_entry())
			command_dispatch();
	}
}