FreeCalypso > hg > freecalypso-sw

view target-utils/libcommon/serflush.S @ 90:5c1e6b7b5bd1

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
nuc-fw: cheezy config.sh hand-holding script created
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Sun, 25 Aug 2013 19:27:40 +0000
parents 1a3bbab2ea26
children
line wrap: on
line source

#include "ns16550.h"

	.text
	.code	32
	.global	serial_flush
serial_flush:
	ldr	r1, =uart_base
	ldr	r2, [r1]
1:	ldrb	r3, [r2, #NS16550_LSR]
	tst	r3, #NS16550_LSR_TEMP
	beq	1b
	bx	lr