1 /******************************************************************************
2 * Filename: rfc.c
3 * Revised: 2015-11-17 12:03:08 +0100 (Tue, 17 Nov 2015)
4 * Revision: 45108
5 *
6 * Description: Driver for the RF Core.
7 *
8 * Copyright (c) 2015, Texas Instruments Incorporated
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions are met:
13 *
14 * 1) Redistributions of source code must retain the above copyright notice,
15 * this list of conditions and the following disclaimer.
16 *
17 * 2) Redistributions in binary form must reproduce the above copyright notice,
18 * this list of conditions and the following disclaimer in the documentation
19 * and/or other materials provided with the distribution.
20 *
21 * 3) Neither the name of the ORGANIZATION nor the names of its contributors may
22 * be used to endorse or promote products derived from this software without
23 * specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
26 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
29 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
36 *
37 ******************************************************************************/
38
39 #include <driverlib/rfc.h>
40
41 //*****************************************************************************
42 //
43 //! Get and clear CPE interrupt flags
44 //
45 //*****************************************************************************
46 uint32_t
RFCCpeIntGetAndClear(void)47 RFCCpeIntGetAndClear(void)
48 {
49 uint32_t ui32Ifg = HWREG(RFC_DBELL_BASE+RFC_DBELL_O_RFCPEIFG);
50
51 do {
52 HWREG(RFC_DBELL_BASE+RFC_DBELL_O_RFCPEIFG) = 0;
53 } while (HWREG(RFC_DBELL_BASE+RFC_DBELL_O_RFCPEIFG));
54
55 return (ui32Ifg);
56 }
57
58
59 //*****************************************************************************
60 //
61 //! Send command to doorbell and wait for ack
62 //
63 //*****************************************************************************
64 uint32_t
RFCDoorbellSendTo(uint32_t pOp)65 RFCDoorbellSendTo(uint32_t pOp)
66 {
67 while(HWREG(RFC_DBELL_BASE + RFC_DBELL_O_CMDR) != 0);
68
69 RFCAckIntClear();
70
71 HWREG(RFC_DBELL_BASE+RFC_DBELL_O_CMDR) = pOp;
72
73 while(!HWREG(RFC_DBELL_BASE + RFC_DBELL_O_RFACKIFG));
74 RFCAckIntClear();
75
76 return(HWREG(RFC_DBELL_BASE + RFC_DBELL_O_CMDSTA));
77 }
78
79
80 //*****************************************************************************
81 //
82 // Handle support for DriverLib in ROM:
83 // This section will undo prototype renaming made in the header file
84 //
85 //*****************************************************************************
86 #if !defined(DOXYGEN)
87 #undef RFCCpeIntGetAndClear
88 #define RFCCpeIntGetAndClear NOROM_RFCCpeIntGetAndClear
89 #undef RFCDoorbellSendTo
90 #define RFCDoorbellSendTo NOROM_RFCDoorbellSendTo
91 #endif
92
93 // See rfc.h for implementation
94