2021-06-26 15:24:07 +02:00
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// SPDX-License-Identifier: Apache-2.0
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2021-05-13 12:41:32 +02:00
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/*
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* Copyright (c) 2021 Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
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2021-06-26 15:24:07 +02:00
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*/
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2021-05-13 12:41:32 +02:00
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#ifndef SRC_FX2_LL_HPP_
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#define SRC_FX2_LL_HPP_
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#include <libusb.h>
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#include <stdint.h>
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#include <string>
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/*!
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* \file fx2_ll
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* \class FX2_ll
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* \brief low level driver for cypress fx2 device
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* \author Gwenhael Goavec-Merou
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*/
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class FX2_ll {
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public:
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/*!
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* \brief constructor
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* \param[in] uninit_vid: vendor ID for uninitialized device
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* \param[in] uninit_pid: product ID for uninitialized device
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* \param[in] vid: vendor ID for initialized device
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* \param[in] pid: product ID for initialized device
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* \param[in] firmware_path: firmware to load
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*/
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FX2_ll(uint16_t uninit_vid, uint16_t uninit_pid,
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uint16_t vid, uint16_t pid, const std::string &firmware_path);
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~FX2_ll();
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/*!
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* \brief bulk write
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* \param[in] endpoint: endpoint to use
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* \param[in] buff: buffer to write
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* \param[in] len: buffer length
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* \return -1 when transfer fails, number of bytes otherwise
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*/
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int write(uint8_t endpoint, uint8_t *buff, uint16_t len);
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/*!
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* \brief bulk read
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* \param[in] endpoint: endpoint to use
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* \param[in] buff: buffer to fill
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* \param[in] len: buffer length
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* \return -1 when transfer fails, number of bytes otherwise
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*/
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int read(uint8_t endpoint, uint8_t *buff, uint16_t len);
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/*!
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* \brief control write
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* \param[in] bRequest
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* \param[in] wValue
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* \param[in] buff: buffer to write
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* \param[in] len: buffer length
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* \return false when transfer fails, true otherwise
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*/
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int write_ctrl(uint8_t bRequest, uint16_t wValue,
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uint8_t *buff, uint16_t len);
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/*!
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* \brief control write
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* \param[in] bRequest
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* \param[in] wValue
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* \param[in] buff: buffer to write
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* \param[in] len: buffer length
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* \return false when transfer fails, true otherwise
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*/
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int read_ctrl(uint8_t bRequest, uint16_t wValue,
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uint8_t *buff, uint16_t len);
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private:
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/*!
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* \brief load firmware into device
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* \param[in] firmware_path: firmware to load
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* \return false if reset or firmware load fail
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*/
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bool load_firmware(std::string firmware_path);
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/*!
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* \brief set/unset reset bit in CPUCS register
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* \param[in] res8051: set or reset
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* \return false if something fails
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*/
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bool reset(uint8_t res8051);
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bool close();
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libusb_device_handle *dev_handle;
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libusb_context *usb_ctx;
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};
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#endif // SRC_FX2_LL_HPP_
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