| /****************************************************************************** |
| * Filename: aux_tdc.c |
| * Revised: 2015-01-13 16:59:55 +0100 (Tue, 13 Jan 2015) |
| * Revision: 42365 |
| * |
| * Description: Driver for the AUX Time to Digital Converter interface. |
| * |
| * Copyright (c) 2015 - 2016, 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 <driverlib/aux_tdc.h> |
| |
| //***************************************************************************** |
| // |
| // Handle support for DriverLib in ROM: |
| // This section will undo prototype renaming made in the header file |
| // |
| //***************************************************************************** |
| #if !defined(DOXYGEN) |
| #undef AUXTDCConfigSet |
| #define AUXTDCConfigSet NOROM_AUXTDCConfigSet |
| #undef AUXTDCMeasurementDone |
| #define AUXTDCMeasurementDone NOROM_AUXTDCMeasurementDone |
| #endif |
| |
| //***************************************************************************** |
| // |
| //! Configure the operation of the AUX TDC |
| // |
| //***************************************************************************** |
| void |
| AUXTDCConfigSet(uint32_t ui32Base, uint32_t ui32StartCondition, |
| uint32_t ui32StopCondition) |
| { |
| // |
| // Check the arguments. |
| // |
| ASSERT(AUXTDCBaseValid(ui32Base)); |
| |
| // |
| // Make sure the AUX TDC is in the idle state before changing the |
| // configuration. |
| // |
| while(!((HWREG(ui32Base + AUX_TDC_O_STAT) & AUX_TDC_STAT_STATE_M) == |
| AUX_TDC_STAT_STATE_IDLE)) |
| { |
| } |
| |
| // |
| // Clear previous results. |
| // |
| HWREG(ui32Base + AUX_TDC_O_CTL) = 0x0; |
| |
| // |
| // Change the configuration. |
| // |
| HWREG(ui32Base + AUX_TDC_O_TRIGSRC) = ui32StartCondition | ui32StopCondition; |
| } |
| |
| //***************************************************************************** |
| // |
| //! Check if the AUX TDC is done measuring |
| // |
| //***************************************************************************** |
| uint32_t |
| AUXTDCMeasurementDone(uint32_t ui32Base) |
| { |
| uint32_t ui32Reg; |
| uint32_t ui32Status; |
| |
| // |
| // Check the arguments. |
| // |
| ASSERT(AUXTDCBaseValid(ui32Base)); |
| |
| // |
| // Check if the AUX TDC is done measuring. |
| // |
| ui32Reg = HWREG(ui32Base + AUX_TDC_O_STAT); |
| if(ui32Reg & AUX_TDC_STAT_DONE) |
| { |
| ui32Status = AUX_TDC_DONE; |
| } |
| else if(ui32Reg & AUX_TDC_STAT_SAT) |
| { |
| ui32Status = AUX_TDC_TIMEOUT; |
| } |
| else |
| { |
| ui32Status = AUX_TDC_BUSY; |
| } |
| |
| // |
| // Return the status. |
| // |
| return (ui32Status); |
| } |