116 lines
3.7 KiB
C
116 lines
3.7 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file ports/MSP430/pal_lld.c
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* @brief MSP430 Digital I/O low level driver code
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* @addtogroup MSP430_PAL
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* @{
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*/
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#include <ch.h>
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#include <pal.h>
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/**
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* @brief MSP430 I/O ports configuration.
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*
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* @param[in] config the MSP430 ports configuration
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*
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* @note The @p PxIFG, @p PxIE and @p PxSEL registers are cleared. @p PxOUT
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* and @p PxDIR are configured as specified.
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*/
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void _pal_lld_init(const MSP430DIOConfig *config) {
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#if defined(__MSP430_HAS_PORT1__) || defined(__MSP430_HAS_PORT1_R__)
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IOPORT_A->iop_full.ie.reg_p = 0;
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IOPORT_A->iop_full.ifg.reg_p = 0;
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IOPORT_A->iop_full.sel.reg_p = 0;
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IOPORT_A->iop_common.out = config->P1Data.out;
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IOPORT_A->iop_common.dir = config->P1Data.dir;
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#endif
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#if defined(__MSP430_HAS_PORT2__) || defined(__MSP430_HAS_PORT2_R__)
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IOPORT_B->iop_full.ie.reg_p = 0;
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IOPORT_B->iop_full.ifg.reg_p = 0;
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IOPORT_B->iop_full.sel.reg_p = 0;
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IOPORT_B->iop_common.out = config->P2Data.out;
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IOPORT_B->iop_common.dir = config->P2Data.dir;
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#endif
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#if defined(__MSP430_HAS_PORT3__) || defined(__MSP430_HAS_PORT3_R__)
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IOPORT_C->iop_simple.sel.reg_p = 0;
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IOPORT_C->iop_common.out = config->P3Data.out;
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IOPORT_C->iop_common.dir = config->P3Data.dir;
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#endif
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#if defined(__MSP430_HAS_PORT4__) || defined(__MSP430_HAS_PORT4_R__)
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IOPORT_D->iop_simple.sel.reg_p = 0;
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IOPORT_D->iop_common.out = config->P4Data.out;
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IOPORT_D->iop_common.dir = config->P4Data.dir;
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#endif
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#if defined(__MSP430_HAS_PORT5__) || defined(__MSP430_HAS_PORT5_R__)
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IOPORT_E->iop_simple.sel.reg_p = 0;
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IOPORT_E->iop_common.out = config->P5Data.out;
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IOPORT_E->iop_common.dir = config->P5Data.dir;
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#endif
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#if defined(__MSP430_HAS_PORT6__) || defined(__MSP430_HAS_PORT6_R__)
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IOPORT_F->iop_simple.sel.reg_p = 0;
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IOPORT_F->iop_common.out = config->P6Data.out;
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IOPORT_F->iop_common.dir = config->P6Data.dir;
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#endif
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}
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/**
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* @brief Pads mode setup.
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* @details This function programs a pads group belonging to the same port
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* with the specified mode.
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*
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* @param[in] port the port identifier
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* @param[in] mask the group mask
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* @param[in] mode the mode
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*
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* @note This function is not meant to be invoked directly by the application
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* code.
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* @note @p PAL_MODE_UNCONNECTED is implemented as output as recommended by
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* the MSP430x1xx Family User's Guide. Unconnected pads are set to
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* high logic state by default.
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* @note This function does not alter the @p PxSEL registers. Alternate
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* functions setup must be handled by device-specific code.
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*/
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void _pal_lld_setgroupmode(ioportid_t port,
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ioportmask_t mask,
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uint_fast8_t mode) {
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switch (mode) {
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case PAL_MODE_RESET:
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case PAL_MODE_INPUT:
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port->iop_common.dir.reg_p &= ~mask;
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break;
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case PAL_MODE_UNCONNECTED:
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port->iop_common.out.reg_p |= mask;
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case PAL_MODE_OUTPUT_PUSHPULL:
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port->iop_common.dir.reg_p |= mask;
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break;
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}
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}
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/** @} */
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