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3a77d15eef
In the latest OSTC hardware, the Telit/Stollman bluetooth module has been replaced with a u-Blox Nina B2 bluetooth module. The BLE communication protocol remains roughly the same, except for a few minor differences: - New UUIDs for services and characteristics - Only one common characteristic for Rx and Tx - Credit based flow control is optional - Credit value of 255 corresponds to a disconnect [Dirk Hohndel: small edit to a comment] Signed-off-by: Jef Driesen <jef@libdivecomputer.org> Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
87 lines
2.8 KiB
C++
87 lines
2.8 KiB
C++
// SPDX-License-Identifier: GPL-2.0
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#ifndef QT_BLE_H
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#define QT_BLE_H
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#include <stddef.h>
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#include "core/libdivecomputer.h"
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#include <QVector>
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#include <QLowEnergyController>
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#include <QEventLoop>
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#define TELIT_DATA_RX 0
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#define TELIT_DATA_TX 1
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#define TELIT_CREDITS_RX 2
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#define TELIT_CREDITS_TX 3
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#define UBLOX_DATA_RX 0
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#define UBLOX_DATA_TX 0
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#define UBLOX_CREDITS_RX 1
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#define UBLOX_CREDITS_TX 1
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class BLEObject : public QObject
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{
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Q_OBJECT
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public:
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BLEObject(QLowEnergyController *c, device_data_t *);
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~BLEObject();
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inline void set_timeout(int value) { timeout = value; }
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dc_status_t write(const void* data, size_t size, size_t *actual);
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dc_status_t read(void* data, size_t size, size_t *actual);
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inline dc_status_t get_name(char *res, size_t size)
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{
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if (!device->btname) return DC_STATUS_UNSUPPORTED;
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strncpy(res, device->btname, size);
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return DC_STATUS_SUCCESS;
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}
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dc_status_t poll(int timeout);
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inline QLowEnergyService *preferredService() { return preferred; }
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inline int descriptorWritten() { return desc_written; }
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dc_status_t select_preferred_service(void);
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public slots:
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void addService(const QBluetoothUuid &newService);
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void serviceStateChanged(QLowEnergyService::ServiceState s);
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void characteristcStateChanged(const QLowEnergyCharacteristic &c, const QByteArray &value);
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void characteristicWritten(const QLowEnergyCharacteristic &c, const QByteArray &value);
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void writeCompleted(const QLowEnergyDescriptor &d, const QByteArray &value);
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dc_status_t setupHwTerminalIo(const QList<QLowEnergyCharacteristic> &allC);
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dc_status_t setHwCredit(unsigned int c);
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private:
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QVector<QLowEnergyService *> services;
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QLowEnergyController *controller = nullptr;
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QLowEnergyService *preferred = nullptr;
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QList<QByteArray> receivedPackets;
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bool isCharacteristicWritten;
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device_data_t *device;
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unsigned int hw_credit = 0;
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unsigned int desc_written = 0;
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int timeout;
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QList<QUuid> telit = {
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"{00000001-0000-1000-8000-008025000000}", // TELIT_DATA_RX
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"{00000002-0000-1000-8000-008025000000}", // TELIT_DATA_TX
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"{00000003-0000-1000-8000-008025000000}", // TELIT_CREDITS_RX
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"{00000004-0000-1000-8000-008025000000}" // TELIT_CREDITS_TX
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};
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QList<QUuid> ublox = {
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"{2456e1b9-26e2-8f83-e744-f34f01e9d703}", // UBLOX_DATA_RX, UBLOX_DATA_TX
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"{2456e1b9-26e2-8f83-e744-f34f01e9d704}" // UBLOX_CREDITS_RX, UBLOX_CREDITS_TX
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};
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};
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extern "C" {
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dc_status_t qt_ble_open(void **io, dc_context_t *context, const char *devaddr, device_data_t *user_device);
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dc_status_t qt_ble_set_timeout(void *io, int timeout);
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dc_status_t qt_ble_poll(void *io, int timeout);
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dc_status_t qt_ble_read(void *io, void* data, size_t size, size_t *actual);
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dc_status_t qt_ble_write(void *io, const void* data, size_t size, size_t *actual);
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dc_status_t qt_ble_ioctl(void *io, unsigned int request, void *data, size_t size);
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dc_status_t qt_ble_close(void *io);
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}
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#endif
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