| /****************************************************************************** |
| * Filename: aux_sysif.c |
| * Revised: 2018-04-17 14:54:06 +0200 (Tue, 17 Apr 2018) |
| * Revision: 51890 |
| * |
| * Description: Driver for the AUX System Interface |
| * |
| * Copyright (c) 2015 - 2017, Texas Instruments Incorporated |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * 1) Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * |
| * 2) Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * |
| * 3) Neither the name of the ORGANIZATION nor the names of its contributors may |
| * be used to endorse or promote products derived from this software without |
| * specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| * |
| ******************************************************************************/ |
| |
| #include "aux_sysif.h" |
| |
| //***************************************************************************** |
| // |
| // Handle support for DriverLib in ROM: |
| // This section will undo prototype renaming made in the header file |
| // |
| //***************************************************************************** |
| #if !defined(DOXYGEN) |
| #undef AUXSYSIFOpModeChange |
| #define AUXSYSIFOpModeChange NOROM_AUXSYSIFOpModeChange |
| #endif |
| |
| |
| //***************************************************************************** |
| // |
| // Used in AUXSYSIFOpModeChange() to control the change of the operational mode. |
| // |
| //***************************************************************************** |
| static const uint8_t g_OpMode_to_order[4] = {1,2,0,3}; |
| static const uint8_t g_Order_to_OpMode[4] = {2,0,1,3}; |
| |
| //***************************************************************************** |
| // |
| // Controls AUX operational mode change |
| // |
| //***************************************************************************** |
| void |
| AUXSYSIFOpModeChange(uint32_t targetOpMode) |
| { |
| uint32_t currentOpMode; |
| uint32_t currentOrder; |
| uint32_t nextMode; |
| |
| // Check the argument |
| ASSERT((targetOpMode == AUX_SYSIF_OPMODEREQ_REQ_PDLP)|| |
| (targetOpMode == AUX_SYSIF_OPMODEREQ_REQ_PDA) || |
| (targetOpMode == AUX_SYSIF_OPMODEREQ_REQ_LP) || |
| (targetOpMode == AUX_SYSIF_OPMODEREQ_REQ_A)); |
| |
| do { |
| currentOpMode = HWREG(AUX_SYSIF_BASE + AUX_SYSIF_O_OPMODEREQ); |
| while ( currentOpMode != HWREG(AUX_SYSIF_BASE + AUX_SYSIF_O_OPMODEACK)); |
| if (currentOpMode != targetOpMode) |
| { |
| currentOrder = g_OpMode_to_order[currentOpMode]; |
| if ( currentOrder < g_OpMode_to_order[targetOpMode]) |
| { |
| nextMode = g_Order_to_OpMode[currentOrder + 1]; |
| } |
| else |
| { |
| nextMode = g_Order_to_OpMode[currentOrder - 1]; |
| } |
| HWREG(AUX_SYSIF_BASE + AUX_SYSIF_O_OPMODEREQ) = nextMode; |
| } |
| } while ( currentOpMode != targetOpMode ); |
| } |