1 /* ----------------------------------------------------------------------------
\r
2 * ATMEL Microcontroller Software Support
\r
3 * ----------------------------------------------------------------------------
\r
4 * Copyright (c) 2008, Atmel Corporation
\r
6 * All rights reserved.
\r
8 * Redistribution and use in source and binary forms, with or without
\r
9 * modification, are permitted provided that the following conditions are met:
\r
11 * - Redistributions of source code must retain the above copyright notice,
\r
12 * this list of conditions and the disclaimer below.
\r
14 * Atmel's name may not be used to endorse or promote products derived from
\r
15 * this software without specific prior written permission.
\r
17 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
\r
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
\r
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
\r
20 * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
\r
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
\r
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
\r
23 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
\r
24 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
\r
25 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
\r
26 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
\r
27 * ----------------------------------------------------------------------------
\r
30 //------------------------------------------------------------------------------
\r
34 /// Configuration and handling of PIT.
\r
38 /// -# Initialize System timer for a period in µsecond with
\r
40 /// -# Set the PIT Periodic Interval Value with PIT_SetPIV
\r
41 /// -# Enable the PIT with PIT_Enable
\r
42 /// -# Enable & disable PIT interrupts using PIT_EnableInt and
\r
44 /// -# Read PIT mode register
\r
46 /// -# Read PIT status register
\r
48 /// -# Read PIT CPIV and PICNT without ressetting the counters
\r
50 /// -# Read System timer CPIV and PICNT without ressetting the counters
\r
52 //------------------------------------------------------------------------------
\r
57 //------------------------------------------------------------------------------
\r
59 //------------------------------------------------------------------------------
\r
61 //------------------------------------------------------------------------------
\r
62 // Exported functions
\r
63 //------------------------------------------------------------------------------
\r
64 extern void PIT_Init(unsigned int period, unsigned int pit_frequency);
\r
65 extern void PIT_SetPIV(unsigned int piv);
\r
66 extern void PIT_Enable(void);
\r
67 extern void PIT_EnableIT(void);
\r
68 extern void PIT_DisableIT(void);
\r
69 extern unsigned int PIT_GetMode(void);
\r
70 extern unsigned int PIT_GetStatus(void);
\r
71 extern unsigned int PIT_GetPIIR(void);
\r
72 extern unsigned int PIT_GetPIVR(void);
\r
74 #endif //#ifndef PIT_H
\r