fc-shell help: batt command: better documentation The semantic meaning of the two bytes carried in the MMI_BATTERY_IND primitive depends on the firmware version. Update the documentation to describe what these two bytes mean in current FC Tourmaline firmware.

#include <stdarg.h>

extern void putchar();

int
printf(char *fmt, ...)
{
	va_list ap;
	int len;

	va_start(ap, fmt);
	len = _doprnt(fmt, ap, &putchar);
	va_end(ap);
	return(len);
}