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141 lines
4.1 KiB
C
141 lines
4.1 KiB
C
/*
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ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
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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 hal_trng_lld.c
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* @brief PLATFORM TRNG subsystem low level driver source.
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*
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* @addtogroup TRNG
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* @{
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*/
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#include "hal.h"
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#if (HAL_USE_TRNG == 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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* @brief TRNGD1 driver identifier.
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*/
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#if (PLATFORM_TRNG_USE_TRNG1 == TRUE) || defined(__DOXYGEN__)
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TRNGDriver TRNGD1;
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#endif
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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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/*===========================================================================*/
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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 Low level TRNG driver initialization.
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*
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* @notapi
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*/
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void trng_lld_init(void) {
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#if PLATFORM_TRNG_USE_TRNG1 == TRUE
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/* Driver initialization.*/
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trngObjectInit(&TRNGD1);
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#endif
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}
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/**
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* @brief Configures and activates the TRNG peripheral.
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*
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* @param[in] trngp pointer to the @p TRNGDriver object
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*
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* @notapi
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*/
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void trng_lld_start(TRNGDriver *trngp) {
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if (trngp->state == TRNG_STOP) {
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/* Enables the peripheral.*/
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#if PLATFORM_TRNG_USE_TRNG1 == TRUE
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if (&TRNGD1 == trngp) {
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}
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#endif
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}
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/* Configures the peripheral.*/
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}
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/**
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* @brief Deactivates the TRNG peripheral.
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*
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* @param[in] trngp pointer to the @p TRNGDriver object
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*
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* @notapi
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*/
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void trng_lld_stop(TRNGDriver *trngp) {
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if (trngp->state == TRNG_READY) {
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/* Resets the peripheral.*/
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/* Disables the peripheral.*/
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#if PLATFORM_TRNG_USE_TRNG1 == TRUE
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if (&TRNGD1 == trngp) {
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}
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#endif
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}
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}
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/**
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* @brief True random numbers generator.
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* @note The function is blocking and likely performs polled waiting
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* inside the low level implementation.
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*
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* @param[in] trngp pointer to the @p TRNGDriver object
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* @param[in] size size of output buffer
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* @param[out] out output buffer
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* @return The operation status.
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* @retval false if a random number has been generated.
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* @retval true if an HW error occurred.
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*
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* @api
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*/
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bool trng_lld_generate(TRNGDriver *trngp, size_t size, uint8_t *out) {
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(void)trngp;
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(void)size;
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(void)out;
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return true;
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}
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#endif /* HAL_USE_TRNG == TRUE */
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/** @} */
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