2 * Copyright (c) 2006 M. Warner Losh. All rights reserved.
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5 * modification, are permitted provided that the following conditions
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8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
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16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 * This software is derived from software provided by kwikbyte without
25 * copyright as follows:
27 * No warranty, expressed or implied, is included with this software. It is
28 * provided "AS IS" and no warranty of any kind including statutory or aspects
29 * relating to merchantability or fitness for any purpose is provided. All
30 * intellectual property rights of others is maintained with the respective
31 * owners. This software is not copyrighted and is intended for reference
37 #include "at91rm9200.h"
38 #include "at91rm9200_lowlevel.h"
42 * int getc(int seconds)
44 * Reads a character from the DBGU port, if one is available within about
45 * seconds seconds. It assumes that DBGU has already been initialized.
50 AT91PS_USART pUSART = (AT91PS_USART)AT91C_BASE_DBGU;
56 thisSecond = GetSeconds();
57 seconds = thisSecond + seconds;
59 if ((pUSART->US_CSR & AT91C_US_RXRDY))
60 return (pUSART->US_RHR & 0xFF);
61 thisSecond = GetSeconds();
62 } while (thisSecond != seconds);