139 lines
4.6 KiB
C
139 lines
4.6 KiB
C
/**
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* MIT License
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*
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* Copyright (c) 2018 Infineon Technologies AG
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE
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*
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*
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* \file
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*
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* \brief This file implements the platform abstraction layer APIs for gpio.
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*
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* \addtogroup grPAL
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* @{
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*/
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/**********************************************************************************************************************
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* HEADER FILES
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*********************************************************************************************************************/
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#include "optiga/pal/pal_gpio.h"
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#include "optiga/pal/pal_ifx_i2c_config.h"
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#include "nrf_gpio.h"
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#include "pal_pin_config.h"
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/**********************************************************************************************************************
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* MACROS
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*********************************************************************************************************************/
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/**********************************************************************************************************************
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* LOCAL DATA
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*********************************************************************************************************************/
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/**********************************************************************************************************************
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* LOCAL ROUTINES
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*********************************************************************************************************************/
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void setup_nrf_gpio(uint32_t pin)
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{
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// don't touch pin config for unused pins
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if (pin == OPTIGA_PIN_UNUSED) {
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return;
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}
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// remove our flags to allow nrf_gpio_* functions to work
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const uint32_t pin_nr = pin & ~OPTIGA_PIN_ALL_MASKS;
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// Init pin direction
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nrf_gpio_cfg_output(pin_nr);
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// Set pin to initial state
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nrf_gpio_pin_write(pin_nr, pin & OPTIGA_PIN_INITIAL_VAL_MASK);
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}
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void write_nrf_gpio(uint32_t pin, bool value)
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{
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// Skip pins marked for one time init or unused
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if ((pin == OPTIGA_PIN_UNUSED) || (pin & OPTIGA_PIN_ONE_TIME_INIT_MASK)) {
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return;
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}
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// remove our flags to allow nrf_gpio_* functions to work
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const uint32_t pin_nr = pin & ~OPTIGA_PIN_ALL_MASKS;
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nrf_gpio_pin_write(pin_nr, value);
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}
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/**********************************************************************************************************************
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* API IMPLEMENTATION
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*********************************************************************************************************************/
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pal_status_t pal_gpio_init(const pal_gpio_t * p_gpio_context)
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{
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const uint32_t vdd_pin = (uint32_t)(optiga_vdd_0.p_gpio_hw);
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const uint32_t rst_pin = (uint32_t)(optiga_reset_0.p_gpio_hw);
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setup_nrf_gpio(vdd_pin);
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setup_nrf_gpio(rst_pin);
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return PAL_STATUS_SUCCESS;
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}
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/**
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* Sets the gpio pin to high state
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*
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* <b>API Details:</b>
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* The API sets the pin high, only if the pin is assigned to a valid gpio context.<br>
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* Otherwise the API returns without any failure status.<br>
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*
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*\param[in] p_gpio_context Pointer to pal layer gpio context
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*
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*
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*/
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void pal_gpio_set_high(const pal_gpio_t* p_gpio_context)
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{
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if (p_gpio_context != NULL)
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{
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write_nrf_gpio((uint32_t)(p_gpio_context->p_gpio_hw), true);
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}
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}
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/**
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* Sets the gpio pin to low state
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*
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* <b>API Details:</b>
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* The API set the pin low, only if the pin is assigned to a valid gpio context.<br>
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* Otherwise the API returns without any failure status.<br>
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*
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*\param[in] p_gpio_context Pointer to pal layer gpio context
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*
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*/
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void pal_gpio_set_low(const pal_gpio_t* p_gpio_context)
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{
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if (p_gpio_context != NULL)
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{
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write_nrf_gpio((uint32_t)(p_gpio_context->p_gpio_hw), false);
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}
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}
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/**
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* @}
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*/
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