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/*
* Licensed under ST Liberty SW License Agreement V2, (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.st.com/software_license_agreement_liberty_v2
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @file SPC5xx/SIU_v1/pal_lld.c
* @brief SPC5xx SIU 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 and types. */
/*===========================================================================*/
#if defined(SPC5_SIU_SYSTEM_PINS)
static const unsigned system_pins[] = {SPC5_SIU_SYSTEM_PINS};
#endif
/*===========================================================================*/
/* 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;
/* 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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