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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011,2012 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file SPC5xx/SIU_v1/pal_lld.c
* @brief SPC5xx SIU/SIUL low level driver code.
*
* @addtogroup PAL
* @{
*/
#include "ch.h"
#include "hal.h"
#if HAL_USE_PAL || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver interrupt handlers. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @brief SPC5xx I/O ports configuration.
*
* @param[in] config the STM32 ports configuration
*
* @notapi
*/
void _pal_lld_init(const PALConfig *config) {
unsigned i;
#if defined(SPC5_SIU_PCTL)
/* SIUL clock gating if present.*/
halSPCSetPeripheralClockMode(SPC5_SIU_PCTL,
SPC5_ME_PCTL_RUN(2) | SPC5_ME_PCTL_LP(2));
#endif
/* Initialize PCR registers for undefined pads.*/
for (i = 0; i < SPC5_SIU_NUM_PCRS; i++)
SIU.PCR[i].R = config->default_mode;
/* Initialize PADSEL registers.*/
for (i = 0; i < SPC5_SIU_NUM_PADSELS; i++)
SIU.PSMI[i].R = config->padsels[i];
/* Initialize PCR registers for defined pads.*/
i = 0;
while (config->inits[i].pcr_value != 0) {
SIU.GPDO[config->inits[i].pcr_index].R = config->inits[i].gpdo_value;
SIU.PCR[config->inits[i].pcr_index].R = config->inits[i].pcr_value;
i++;
}
}
/**
* @brief Reads a group of bits.
*
* @param[in] port port identifier
* @param[in] mask group mask
* @param[in] offset group bit offset within the port
* @return The group logical states.
*
* @notapi
*/
ioportmask_t _pal_lld_readgroup(ioportid_t port,
ioportmask_t mask,
uint_fast8_t offset) {
(void)port;
(void)mask;
(void)offset;
return 0;
}
/**
* @brief Writes a group of bits.
*
* @param[in] port port identifier
* @param[in] mask group mask
* @param[in] offset group bit offset within the port
* @param[in] bits bits to be written. Values exceeding the group width
* are masked.
*
* @notapi
*/
void _pal_lld_writegroup(ioportid_t port,
ioportmask_t mask,
uint_fast8_t offset,
ioportmask_t bits) {
(void)port;
(void)mask;
(void)offset;
(void)bits;
}
/**
* @brief Pads mode setup.
* @details This function programs a pads group belonging to the same port
* with the specified mode.
*
* @param[in] port the port identifier
* @param[in] mask the group mask
* @param[in] mode the mode
*
* @notapi
*/
void _pal_lld_setgroupmode(ioportid_t port,
ioportmask_t mask,
iomode_t mode) {
unsigned pcr_index = (unsigned)(port * PAL_IOPORTS_WIDTH);
ioportmask_t m1 = 0x8000;
while (m1) {
if (mask & m1)
SIU.PCR[pcr_index].R = mode;
m1 >>= 1;
++pcr_index;
}
}
#endif /* HAL_USE_PAL */
/** @} */
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