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85 lines
2.6 KiB
85 lines
2.6 KiB
/******************************************************************************
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*
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* Copyright (C) 2018 ST Microelectronics S.A.
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*
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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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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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******************************************************************************/
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#ifndef SPILAYERINTERFACE_H_
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#define SPILAYERINTERFACE_H_
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#include "utils-lib/Tpdu.h"
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typedef struct SpiDriver_config {
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char* pDevName;
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/*!< Port name connected to ESE
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*
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* Platform specific canonical device name to which ESE is connected.
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*
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* e.g. On Linux based systems this would be /dev/p73
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*/
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int bgt;
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int polling_interval;
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uint32_t devMaxFreq;
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/*!< Communication speed between DH and ESE
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*
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* This is the baudrate of the bus for communication between DH and ESE
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*/
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void* pDevHandle;
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/*!< Device handle output */
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} SpiDriver_config_t, *pSpiDriver_config_t; /* pointer to SpiDriver_config_t */
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/**
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* Initializes the connection to the SE:
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* 1- Initial configuration of the SPI bus (if needed)
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* 2- Start the polling mechanism to read the ATP from the eSE and set-up the
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* atp struct.
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* 3- Reconfigure SPI bus after the atp (if needed)
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*
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* @return 0 if connection could be initialized, -1 otherwise.
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*/
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int SpiLayerInterface_init(SpiDriver_config_t* tSpiDriver);
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/**
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* Sends a TPDU to the SE, waits for the response and returns it.
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*
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* @param cmdTpdu The TPDU to be sent.
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* @param respTpdu The memory position where to store the response.
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* @param numberOfBwt The maximum number of BWT to wait.
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*
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* @return 0 if everything went ok, -1 otherwise. If timeout expired with no
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* response, 0 will be returned and respTpdu will be NULL.
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*/
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int SpiLayerInterface_transcieveTpdu(Tpdu* cmdTpdu, Tpdu* respTpdu,
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int numberOfBwt);
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void SpiLayerInterface_close(void* pDevHandle);
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/**
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* Setup communication to the SE:
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* 1- Perform a SE reset pulse
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* 2- Start the polling mechanism to read the ATP from the eSE and set-up the
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* atp struct.
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* 3- Configure the IFSD length with the SE.
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*
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* @return 0 if connection could be initialized, -1 otherwise.
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*/
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int SpiLayerInterface_setup();
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#endif /* SPILAYERINTERFACE_H_ */
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