初始版本

external/infineon/pal/nrf5x/pal_gpio.c

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