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88f4c06b99
When we enable notifications, we actually want to make sure to wait for that write to have completed before we start communicating with the device, because otherwise we might lose notification events. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
65 lines
2.1 KiB
C++
65 lines
2.1 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 HW_OSTC_BLE_DATA_RX 0
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#define HW_OSTC_BLE_DATA_TX 1
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#define HW_OSTC_BLE_CREDITS_RX 2
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#define HW_OSTC_BLE_CREDITS_TX 3
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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, dc_user_device_t *);
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~BLEObject();
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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 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(QList<QLowEnergyCharacteristic>);
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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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dc_user_device_t *device;
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unsigned int hw_credit = 0;
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unsigned int desc_written = 0;
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QList<QUuid> hwAllCharacteristics = {
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"{00000001-0000-1000-8000-008025000000}", // HW_OSTC_BLE_DATA_RX
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"{00000002-0000-1000-8000-008025000000}", // HW_OSTC_BLE_DATA_TX
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"{00000003-0000-1000-8000-008025000000}", // HW_OSTC_BLE_CREDITS_RX
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"{00000004-0000-1000-8000-008025000000}" // HW_OSTC_BLE_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, dc_user_device_t *user_device);
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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_close(void *io);
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}
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#endif
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