mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-05-30 00:49:05 -04:00
514 lines
14 KiB
C
514 lines
14 KiB
C
/* --COPYRIGHT--,BSD
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* Copyright (c) 2014, Texas Instruments Incorporated
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* All rights reserved.
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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 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 "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* --/COPYRIGHT--*/
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//*****************************************************************************
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//
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// gpio.c - Driver for the gpio Module.
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//
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//*****************************************************************************
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//*****************************************************************************
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//
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//! \addtogroup gpio_api gpio
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//! @{
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//
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//*****************************************************************************
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#include "inc/hw_regaccess.h"
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#include "inc/hw_memmap.h"
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#if defined(__MSP430_HAS_PORT1_R__) || defined(__MSP430_HAS_PORT2_R__) || \
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defined(__MSP430_HAS_PORTA_R__)
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#include "gpio.h"
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#include <assert.h>
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static const uint16_t GPIO_PORT_TO_BASE[] = {
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0x00,
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#if defined(__MSP430_HAS_PORT1_R__)
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__MSP430_BASEADDRESS_PORT1_R__,
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#elif defined(__MSP430_HAS_PORT1__)
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__MSP430_BASEADDRESS_PORT1__,
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#else
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0xFFFF,
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#endif
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#if defined(__MSP430_HAS_PORT2_R__)
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__MSP430_BASEADDRESS_PORT2_R__,
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#elif defined(__MSP430_HAS_PORT2__)
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__MSP430_BASEADDRESS_PORT2__,
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#else
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0xFFFF,
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#endif
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#if defined(__MSP430_HAS_PORT3_R__)
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__MSP430_BASEADDRESS_PORT3_R__,
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#elif defined(__MSP430_HAS_PORT3__)
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__MSP430_BASEADDRESS_PORT3__,
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#else
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0xFFFF,
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#endif
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#if defined(__MSP430_HAS_PORT4_R__)
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__MSP430_BASEADDRESS_PORT4_R__,
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#elif defined(__MSP430_HAS_PORT4__)
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__MSP430_BASEADDRESS_PORT4__,
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#else
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0xFFFF,
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#endif
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#if defined(__MSP430_HAS_PORT5_R__)
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__MSP430_BASEADDRESS_PORT5_R__,
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#elif defined(__MSP430_HAS_PORT5__)
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__MSP430_BASEADDRESS_PORT5__,
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#else
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0xFFFF,
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#endif
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#if defined(__MSP430_HAS_PORT6_R__)
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__MSP430_BASEADDRESS_PORT6_R__,
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#elif defined(__MSP430_HAS_PORT6__)
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__MSP430_BASEADDRESS_PORT6__,
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#else
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0xFFFF,
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#endif
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#if defined(__MSP430_HAS_PORT7_R__)
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__MSP430_BASEADDRESS_PORT7_R__,
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#elif defined(__MSP430_HAS_PORT7__)
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__MSP430_BASEADDRESS_PORT7__,
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#else
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0xFFFF,
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#endif
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#if defined(__MSP430_HAS_PORT8_R__)
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__MSP430_BASEADDRESS_PORT8_R__,
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#elif defined(__MSP430_HAS_PORT8__)
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__MSP430_BASEADDRESS_PORT8__,
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#else
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0xFFFF,
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#endif
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#if defined(__MSP430_HAS_PORT9_R__)
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__MSP430_BASEADDRESS_PORT9_R__,
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#elif defined(__MSP430_HAS_PORT9__)
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__MSP430_BASEADDRESS_PORT9__,
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#else
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0xFFFF,
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#endif
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#if defined(__MSP430_HAS_PORT10_R__)
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__MSP430_BASEADDRESS_PORT10_R__,
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#elif defined(__MSP430_HAS_PORT10__)
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__MSP430_BASEADDRESS_PORT10__,
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#else
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0xFFFF,
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#endif
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#if defined(__MSP430_HAS_PORT11_R__)
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__MSP430_BASEADDRESS_PORT11_R__,
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#elif defined(__MSP430_HAS_PORT11__)
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__MSP430_BASEADDRESS_PORT11__,
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#else
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0xFFFF,
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#endif
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0xFFFF,
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#if defined(__MSP430_HAS_PORTJ_R__)
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__MSP430_BASEADDRESS_PORTJ_R__
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#elif defined(__MSP430_HAS_PORTJ__)
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__MSP430_BASEADDRESS_PORTJ__
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#else
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0xFFFF
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#endif
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};
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void GPIO_setAsOutputPin(uint8_t selectedPort,
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uint16_t selectedPins) {
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uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort];
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#ifndef NDEBUG
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if(baseAddress == 0xFFFF)
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{
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return;
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}
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#endif
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// Shift by 8 if port is even (upper 8-bits)
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if((selectedPort & 1) ^ 1)
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{
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selectedPins <<= 8;
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}
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HWREG16(baseAddress + OFS_PASEL0) &= ~selectedPins;
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HWREG16(baseAddress + OFS_PASEL1) &= ~selectedPins;
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HWREG16(baseAddress + OFS_PADIR) |= selectedPins;
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return;
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}
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void GPIO_setAsInputPin(uint8_t selectedPort,
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uint16_t selectedPins) {
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uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort];
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#ifndef NDEBUG
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if(baseAddress == 0xFFFF)
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{
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return;
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}
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#endif
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// Shift by 8 if port is even (upper 8-bits)
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if((selectedPort & 1) ^ 1)
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{
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selectedPins <<= 8;
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}
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HWREG16(baseAddress + OFS_PASEL0) &= ~selectedPins;
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HWREG16(baseAddress + OFS_PASEL1) &= ~selectedPins;
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HWREG16(baseAddress + OFS_PADIR) &= ~selectedPins;
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HWREG16(baseAddress + OFS_PAREN) &= ~selectedPins;
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}
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void GPIO_setAsPeripheralModuleFunctionOutputPin(uint8_t selectedPort,
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uint16_t selectedPins
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,
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uint8_t mode) {
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uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort];
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#ifndef NDEBUG
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if(baseAddress == 0xFFFF)
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{
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return;
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}
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#endif
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// Shift by 8 if port is even (upper 8-bits)
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if((selectedPort & 1) ^ 1)
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{
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selectedPins <<= 8;
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}
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HWREG16(baseAddress + OFS_PADIR) |= selectedPins;
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switch(mode)
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{
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case GPIO_PRIMARY_MODULE_FUNCTION:
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HWREG16(baseAddress + OFS_PASEL0) |= selectedPins;
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HWREG16(baseAddress + OFS_PASEL1) &= ~selectedPins;
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break;
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case GPIO_SECONDARY_MODULE_FUNCTION:
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HWREG16(baseAddress + OFS_PASEL0) &= ~selectedPins;
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HWREG16(baseAddress + OFS_PASEL1) |= selectedPins;
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break;
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case GPIO_TERNARY_MODULE_FUNCTION:
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HWREG16(baseAddress + OFS_PASEL0) |= selectedPins;
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HWREG16(baseAddress + OFS_PASEL1) |= selectedPins;
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break;
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}
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}
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void GPIO_setAsPeripheralModuleFunctionInputPin(uint8_t selectedPort,
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uint16_t selectedPins
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,
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uint8_t mode) {
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uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort];
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#ifndef NDEBUG
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if(baseAddress == 0xFFFF)
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{
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return;
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}
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#endif
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// Shift by 8 if port is even (upper 8-bits)
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if((selectedPort & 1) ^ 1)
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{
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selectedPins <<= 8;
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}
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HWREG16(baseAddress + OFS_PADIR) &= ~selectedPins;
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switch(mode)
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{
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case GPIO_PRIMARY_MODULE_FUNCTION:
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HWREG16(baseAddress + OFS_PASEL0) |= selectedPins;
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HWREG16(baseAddress + OFS_PASEL1) &= ~selectedPins;
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break;
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case GPIO_SECONDARY_MODULE_FUNCTION:
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HWREG16(baseAddress + OFS_PASEL0) &= ~selectedPins;
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HWREG16(baseAddress + OFS_PASEL1) |= selectedPins;
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break;
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case GPIO_TERNARY_MODULE_FUNCTION:
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HWREG16(baseAddress + OFS_PASEL0) |= selectedPins;
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HWREG16(baseAddress + OFS_PASEL1) |= selectedPins;
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break;
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}
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}
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void GPIO_setOutputHighOnPin(uint8_t selectedPort,
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uint16_t selectedPins) {
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uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort];
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#ifndef NDEBUG
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if(baseAddress == 0xFFFF)
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{
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return;
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}
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#endif
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// Shift by 8 if port is even (upper 8-bits)
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if((selectedPort & 1) ^ 1)
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{
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selectedPins <<= 8;
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}
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HWREG16(baseAddress + OFS_PAOUT) |= selectedPins;
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}
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void GPIO_setOutputLowOnPin(uint8_t selectedPort,
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uint16_t selectedPins) {
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uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort];
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#ifndef NDEBUG
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if(baseAddress == 0xFFFF)
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{
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return;
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}
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#endif
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// Shift by 8 if port is even (upper 8-bits)
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if((selectedPort & 1) ^ 1)
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{
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selectedPins <<= 8;
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}
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HWREG16(baseAddress + OFS_PAOUT) &= ~selectedPins;
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}
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void GPIO_toggleOutputOnPin(uint8_t selectedPort,
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uint16_t selectedPins) {
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uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort];
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#ifndef NDEBUG
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if(baseAddress == 0xFFFF)
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{
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return;
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}
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#endif
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// Shift by 8 if port is even (upper 8-bits)
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if((selectedPort & 1) ^ 1)
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{
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selectedPins <<= 8;
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}
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HWREG16(baseAddress + OFS_PAOUT) ^= selectedPins;
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}
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void GPIO_setAsInputPinWithPullDownResistor(uint8_t selectedPort,
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uint16_t selectedPins) {
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uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort];
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#ifndef NDEBUG
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if(baseAddress == 0xFFFF)
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{
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return;
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}
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#endif
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// Shift by 8 if port is even (upper 8-bits)
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if((selectedPort & 1) ^ 1)
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{
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selectedPins <<= 8;
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}
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HWREG16(baseAddress + OFS_PASEL0) &= ~selectedPins;
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HWREG16(baseAddress + OFS_PASEL1) &= ~selectedPins;
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HWREG16(baseAddress + OFS_PADIR) &= ~selectedPins;
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HWREG16(baseAddress + OFS_PAREN) |= selectedPins;
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HWREG16(baseAddress + OFS_PAOUT) &= ~selectedPins;
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}
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void GPIO_setAsInputPinWithPullUpResistor(uint8_t selectedPort,
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uint16_t selectedPins) {
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uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort];
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#ifndef NDEBUG
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if(baseAddress == 0xFFFF)
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{
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return;
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}
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#endif
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// Shift by 8 if port is even (upper 8-bits)
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if((selectedPort & 1) ^ 1)
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{
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selectedPins <<= 8;
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}
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HWREG16(baseAddress + OFS_PASEL0) &= ~selectedPins;
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HWREG16(baseAddress + OFS_PASEL1) &= ~selectedPins;
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HWREG16(baseAddress + OFS_PADIR) &= ~selectedPins;
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HWREG16(baseAddress + OFS_PAREN) |= selectedPins;
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HWREG16(baseAddress + OFS_PAOUT) |= selectedPins;
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}
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uint8_t GPIO_getInputPinValue(uint8_t selectedPort,
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uint16_t selectedPins) {
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uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort];
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#ifndef NDEBUG
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if(baseAddress == 0xFFFF)
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{
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return;
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}
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#endif
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// Shift by 8 if port is even (upper 8-bits)
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if((selectedPort & 1) ^ 1)
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{
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selectedPins <<= 8;
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}
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uint16_t inputPinValue = HWREG16(baseAddress + OFS_PAIN) & (selectedPins);
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if(inputPinValue > 0)
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{
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return (GPIO_INPUT_PIN_HIGH);
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}
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return (GPIO_INPUT_PIN_LOW);
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}
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void GPIO_enableInterrupt(uint8_t selectedPort,
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uint16_t selectedPins) {
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uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort];
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#ifndef NDEBUG
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if(baseAddress == 0xFFFF)
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{
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return;
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}
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#endif
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// Shift by 8 if port is even (upper 8-bits)
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if((selectedPort & 1) ^ 1)
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{
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selectedPins <<= 8;
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}
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HWREG16(baseAddress + OFS_PAIE) |= selectedPins;
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}
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void GPIO_disableInterrupt(uint8_t selectedPort,
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uint16_t selectedPins) {
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uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort];
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#ifndef NDEBUG
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if(baseAddress == 0xFFFF)
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{
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return;
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}
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#endif
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// Shift by 8 if port is even (upper 8-bits)
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if((selectedPort & 1) ^ 1)
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{
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selectedPins <<= 8;
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}
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HWREG16(baseAddress + OFS_PAIE) &= ~selectedPins;
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}
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uint16_t GPIO_getInterruptStatus(uint8_t selectedPort,
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uint16_t selectedPins) {
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uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort];
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#ifndef NDEBUG
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if(baseAddress == 0xFFFF)
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{
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return;
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}
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#endif
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// Shift by 8 if port is even (upper 8-bits)
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if((selectedPort & 1) ^ 1)
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{
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selectedPins <<= 8;
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}
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return (HWREG16(baseAddress + OFS_PAIFG) & selectedPins);
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}
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void GPIO_clearInterrupt(uint8_t selectedPort,
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uint16_t selectedPins) {
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uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort];
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#ifndef NDEBUG
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if(baseAddress == 0xFFFF)
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{
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return;
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}
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#endif
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// Shift by 8 if port is even (upper 8-bits)
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if((selectedPort & 1) ^ 1)
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{
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selectedPins <<= 8;
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}
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HWREG16(baseAddress + OFS_PAIFG) &= ~selectedPins;
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}
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void GPIO_selectInterruptEdge(uint8_t selectedPort,
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uint16_t selectedPins,
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uint8_t edgeSelect) {
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uint16_t baseAddress = GPIO_PORT_TO_BASE[selectedPort];
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#ifndef NDEBUG
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if(baseAddress == 0xFFFF)
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{
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return;
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}
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#endif
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// Shift by 8 if port is even (upper 8-bits)
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if((selectedPort & 1) ^ 1)
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{
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selectedPins <<= 8;
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}
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if(GPIO_LOW_TO_HIGH_TRANSITION == edgeSelect)
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{
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HWREG16(baseAddress + OFS_PAIES) &= ~selectedPins;
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}
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else
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{
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HWREG16(baseAddress + OFS_PAIES) |= selectedPins;
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}
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}
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#endif
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//*****************************************************************************
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//
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//! Close the doxygen group for gpio_api
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//! @}
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//
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//*****************************************************************************
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