mirror of
https://github.com/trezor/trezor-firmware.git
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122 lines
3.5 KiB
C
122 lines
3.5 KiB
C
/*
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* This file is part of the Trezor project, https://trezor.io/
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*
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* Copyright (c) SatoshiLabs
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef TREZORHAL_BLE_H
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#define TREZORHAL_BLE_H
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// This module provides interface to BLE (Bluetooth Low Energy) functionality.
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// It allows the device to advertise itself, connect to other devices, and
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// exchange data over BLE.
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#include <trezor_types.h>
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#define BLE_RX_PACKET_SIZE 244
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#define BLE_TX_PACKET_SIZE 64
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typedef enum {
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BLE_SWITCH_OFF = 0, // Turn off BLE advertising, disconnect
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BLE_SWITCH_ON = 1, // Turn on BLE advertising
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BLE_PAIRING_MODE = 2, // Enter pairing mode
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BLE_DISCONNECT = 3, // Disconnect from the connected device
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BLE_ERASE_BONDS = 4, // Erase all bonding information
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BLE_ALLOW_PAIRING = 5, // Accept pairing request
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BLE_REJECT_PAIRING = 6, // Reject pairing request
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} ble_command_t;
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typedef enum {
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BLE_NONE = 0, // No event
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BLE_CONNECTED = 1, // Connected to a device
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BLE_DISCONNECTED = 2, // Disconnected from a device
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BLE_PAIRING_REQUEST = 3, // Pairing request received
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} ble_event_type_t;
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typedef struct {
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ble_event_type_t type;
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int connection_id;
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uint8_t data_len;
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uint8_t data[6];
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} ble_event_t;
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typedef struct {
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bool connected;
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uint8_t peer_count;
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} ble_state_t;
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// Initializes the BLE module
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//
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// Sets up the BLE hardware and software resources,
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// preparing the module for operation.
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// The function has no effect if the module was already initialized.
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void ble_init(void);
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// Deinitializes the BLE module
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//
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// Releases resources allocated during initialization
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// and shuts down the BLE module.
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void ble_deinit(void);
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// Starts BLE operations
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//
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// Enables reception of messages over BLE
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void ble_start(void);
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// Stops BLE operations
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//
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// Disables reception of messages over BLE
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// Flushes any queued messages
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void ble_stop(void);
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// Issues a command to the BLE module
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//
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// Sends a specific command to the BLE module for execution.
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//
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// Returns `true` if the command was successfully issued.
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bool ble_issue_command(ble_command_t command);
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// Reads an event from the BLE module
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//
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// Retrieves the next event from the BLE module's event queue.
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//
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// Returns `true` if an event was successfully read, `false` if no event is
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// available.
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bool ble_read_event(ble_event_t *event);
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// Retrieves the current state of the BLE module
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//
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// Obtains the current operational state of the BLE module.
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void ble_get_state(ble_state_t *state);
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// Check if write is possible
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bool ble_can_write(void);
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// Writes data to a connected BLE device
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//
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// Sends data over an established BLE connection.
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bool ble_write(const uint8_t *data, uint16_t len);
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// Reads data from a connected BLE device
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//
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// max_len indicates the maximum number of bytes to read. Rest of the data
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// will be discarded.
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//
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// Returns the number of bytes actually read.
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uint32_t ble_read(uint8_t *data, uint16_t max_len);
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#endif
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