129 lines
6.0 KiB
C
129 lines
6.0 KiB
C
//*****************************************************************************
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//
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// hw_types.h - Common types and macros.
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//
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// Copyright (c) 2005-2013 Texas Instruments Incorporated. All rights reserved.
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// Software License Agreement
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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//
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// Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the
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// distribution.
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//
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// Neither the name of Texas Instruments Incorporated nor the names of
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// its contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// This is part of revision 1.1 of the Tiva Firmware Development Package.
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//
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//*****************************************************************************
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#ifndef __HW_TYPES_H__
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#define __HW_TYPES_H__
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//*****************************************************************************
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//
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// Macros for hardware access, both direct and via the bit-band region.
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//
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//*****************************************************************************
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#define HWREG(x) \
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(*((volatile uint32_t *)(x)))
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#define HWREGH(x) \
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(*((volatile uint16_t *)(x)))
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#define HWREGB(x) \
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(*((volatile uint8_t *)(x)))
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#define HWREGBITW(x, b) \
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HWREG(((uint32_t)(x) & 0xF0000000) | 0x02000000 | \
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(((uint32_t)(x) & 0x000FFFFF) << 5) | ((b) << 2))
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#define HWREGBITH(x, b) \
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HWREGH(((uint32_t)(x) & 0xF0000000) | 0x02000000 | \
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(((uint32_t)(x) & 0x000FFFFF) << 5) | ((b) << 2))
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#define HWREGBITB(x, b) \
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HWREGB(((uint32_t)(x) & 0xF0000000) | 0x02000000 | \
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(((uint32_t)(x) & 0x000FFFFF) << 5) | ((b) << 2))
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//*****************************************************************************
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//
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// Helper Macros for determining silicon revisions, etc.
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//
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// These macros will be used by Driverlib at "run-time" to create necessary
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// conditional code blocks that will allow a single version of the Driverlib
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// "binary" code to support multiple(all) Tiva silicon revisions.
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//
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// It is expected that these macros will be used inside of a standard 'C'
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// conditional block of code, e.g.
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//
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// if(CLASS_IS_BLIZZARD)
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// {
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// do some Blizzard-class specific code here.
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// }
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//
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// By default, these macros will be defined as run-time checks of the
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// appropriate register(s) to allow creation of run-time conditional code
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// blocks for a common DriverLib across the entire Tiva family.
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//
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// However, if code-space optimization is required, these macros can be "hard-
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// coded" for a specific version of Tiva silicon. Many compilers will then
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// detect the "hard-coded" conditionals, and appropriately optimize the code
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// blocks, eliminating any "unreachable" code. This would result in a smaller
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// Driverlib, thus producing a smaller final application size, but at the cost
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// of limiting the Driverlib binary to a specific Tiva silicon revision.
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//
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//*****************************************************************************
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#ifndef CLASS_IS_BLIZZARD
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#define CLASS_IS_BLIZZARD \
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((HWREG(SYSCTL_DID0) & (SYSCTL_DID0_VER_M | SYSCTL_DID0_CLASS_M)) == \
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(SYSCTL_DID0_VER_1 | SYSCTL_DID0_CLASS_BLIZZARD))
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#endif
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#ifndef REVISION_IS_A0
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#define REVISION_IS_A0 \
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((HWREG(SYSCTL_DID0) & (SYSCTL_DID0_MAJ_M | SYSCTL_DID0_MIN_M)) == \
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(SYSCTL_DID0_MAJ_REVA | SYSCTL_DID0_MIN_0))
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#endif
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#ifndef REVISION_IS_A1
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#define REVISION_IS_A1 \
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((HWREG(SYSCTL_DID0) & (SYSCTL_DID0_MAJ_M | SYSCTL_DID0_MIN_M)) == \
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(SYSCTL_DID0_MAJ_REVA | SYSCTL_DID0_MIN_0))
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#endif
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#ifndef REVISION_IS_A2
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#define REVISION_IS_A2 \
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((HWREG(SYSCTL_DID0) & (SYSCTL_DID0_MAJ_M | SYSCTL_DID0_MIN_M)) == \
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(SYSCTL_DID0_MAJ_REVA | SYSCTL_DID0_MIN_2))
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#endif
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#ifndef REVISION_IS_B0
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#define REVISION_IS_B0 \
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((HWREG(SYSCTL_DID0) & (SYSCTL_DID0_MAJ_M | SYSCTL_DID0_MIN_M)) == \
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(SYSCTL_DID0_MAJ_REVB | SYSCTL_DID0_MIN_0))
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#endif
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#ifndef REVISION_IS_B1
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#define REVISION_IS_B1 \
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((HWREG(SYSCTL_DID0) & (SYSCTL_DID0_MAJ_M | SYSCTL_DID0_MIN_M)) == \
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(SYSCTL_DID0_MAJ_REVB | SYSCTL_DID0_MIN_1))
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#endif
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#endif // __HW_TYPES_H__
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