159 lines
5.7 KiB
C
159 lines
5.7 KiB
C
/*
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Copyright (C) 2015 Fabio Utzig
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/**
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* @file NRF5/LLD/hal_pal_lld.c
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* @brief NRF5 PAL subsystem low level driver source.
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*
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* @addtogroup PAL
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* @{
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*/
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#include "osal.h"
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#include "hal.h"
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#if (HAL_USE_PAL == TRUE) || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Driver local definitions. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver exported variables. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver local variables and types. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver local functions. */
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/*===========================================================================*/
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void _pal_lld_setpadmode(ioportid_t port, uint8_t pad, iomode_t mode)
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{
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(void)port;
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osalDbgAssert(pad < PAL_IOPORTS_WIDTH, "pal_lld_setpadmode() - invalid pad");
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switch (mode) {
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case PAL_MODE_RESET:
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case PAL_MODE_UNCONNECTED:
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IOPORT1->PIN_CNF[pad] =
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(GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) |
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(GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) |
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(GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos) |
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(GPIO_PIN_CNF_INPUT_Disconnect << GPIO_PIN_CNF_INPUT_Pos) |
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(GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
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break;
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case PAL_MODE_INPUT:
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case PAL_MODE_INPUT_ANALOG:
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IOPORT1->PIN_CNF[pad] =
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(GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) |
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(GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) |
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(GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos) |
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(GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) |
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(GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
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break;
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case PAL_MODE_INPUT_PULLUP:
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IOPORT1->PIN_CNF[pad] =
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(GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) |
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(GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) |
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(GPIO_PIN_CNF_PULL_Pullup << GPIO_PIN_CNF_PULL_Pos) |
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(GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) |
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(GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
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break;
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case PAL_MODE_INPUT_PULLDOWN:
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IOPORT1->PIN_CNF[pad] =
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(GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) |
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(GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) |
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(GPIO_PIN_CNF_PULL_Pulldown << GPIO_PIN_CNF_PULL_Pos) |
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(GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) |
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(GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
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break;
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case PAL_MODE_OUTPUT_PUSHPULL:
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IOPORT1->PIN_CNF[pad] =
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(GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) |
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(GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) |
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(GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos) |
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(GPIO_PIN_CNF_INPUT_Disconnect << GPIO_PIN_CNF_INPUT_Pos) |
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(GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos);
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break;
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case PAL_MODE_OUTPUT_OPENDRAIN:
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IOPORT1->PIN_CNF[pad] =
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(GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) |
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(GPIO_PIN_CNF_DRIVE_S0D1 << GPIO_PIN_CNF_DRIVE_Pos) |
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(GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos) |
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(GPIO_PIN_CNF_INPUT_Disconnect << GPIO_PIN_CNF_INPUT_Pos) |
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(GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos);
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break;
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default:
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osalDbgAssert(FALSE, "invalid pal mode");
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break;
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}
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}
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/*===========================================================================*/
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/* Driver interrupt handlers. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver exported functions. */
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/*===========================================================================*/
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/**
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* @brief NRF5 I/O ports configuration.
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*
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* @param[in] config the NRF5 ports configuration
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*
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* @notapi
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*/
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void _pal_lld_init(const PALConfig *config)
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{
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uint8_t i;
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for (i = 0; i < TOTAL_GPIO_PADS; i++) {
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pal_lld_setpadmode(IOPORT1, i, config->pads[i]);
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}
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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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* @notapi
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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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iomode_t mode)
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{
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uint8_t i;
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for (i = 0; i < TOTAL_GPIO_PADS; i++, mask >>= 1) {
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if (mask & 1) {
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pal_lld_setpadmode(port, i, mode);
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}
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}
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}
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#endif /* HAL_USE_PAL == TRUE */
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/** @} */
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