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/*
* PD Buddy Firmware Library - USB Power Delivery for everyone
* Copyright 2017-2018 Clayton G. Hobbs
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef PDB_FUSB302B_H
#define PDB_FUSB302B_H
#include "pd.h"
#include "pdb_msg.h"
class FUSB302 {
public:
typedef bool (*I2CFunc)(const uint8_t deviceAddr, const uint8_t registerAdd, const uint8_t size, uint8_t *buf);
typedef void (*DelayFunc)(uint32_t milliseconds);
FUSB302(uint8_t address, I2CFunc read, I2CFunc write, DelayFunc delay) : DeviceAddress(address), I2CRead(read), I2CWrite(write), osDelay(delay){};
void fusb_send_message(const pd_msg *msg) const;
bool fusb_rx_pending() const;
/*
* Read a USB Power Delivery message from the FUSB302B
*/
uint8_t fusb_read_message(pd_msg *msg) const;
/*
* Tell the FUSB302B to send a hard reset signal
*/
void fusb_send_hardrst() const;
/*
* FUSB status union
*
* Provides a nicer structure than just an array of uint8_t for working with
* the FUSB302B status and interrupt flags.
*/
typedef union {
uint8_t bytes[7];
struct {
uint8_t status0a;
uint8_t status1a;
uint8_t interrupta;
uint8_t interruptb;
uint8_t status0;
uint8_t status1;
uint8_t interrupt;
};
} fusb_status;
/*
* Read the FUSB302B status and interrupt flags into *status
*/
bool fusb_get_status(fusb_status *status) const;
/*
* Read the FUSB302B BC_LVL as an enum fusb_typec_current
*/
enum fusb_typec_current fusb_get_typec_current() const;
/*
* Initialization routine for the FUSB302B
*/
bool fusb_setup() const;
/*
* Reset the FUSB302B
*/
bool fusb_reset() const;
bool fusb_read_id() const;
bool runCCLineSelection() const;
// Measure VBus with the MADC and check if its connected
bool isVBUSConnected() const;
private:
const uint8_t DeviceAddress; // I2C address for this device
// I2C bus access functions, should return true if command worked
// Function to read data from the FUSB302
const I2CFunc I2CRead;
// Function to write data to the FUSB302
const I2CFunc I2CWrite;
// Simple Delay function used only during startup reset
const DelayFunc osDelay;
uint8_t fusb_read_byte(const uint8_t addr) const;
bool fusb_write_byte(const uint8_t addr, const uint8_t byte) const;
};
#endif /* PDB_FUSB302B_H */
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