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Replace semaphores with task notifications. (#9)

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* Replace all semaphores with task notifications.

* use critical sections to prevent concurrent data access.

* Ensure scan stop has been called before connecting.

* Optimize and cleanup

* Add template casting to NimBLERemoteDescriptor::readValue()

* Removed storage of the descriptor value read as it did not serve any purpose.
This commit is contained in:
h2zero
2020-06-21 22:07:01 -06:00
committed by GitHub
parent 5bc9d59646
commit f5541d18de
11 changed files with 368 additions and 401 deletions
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src/NimBLERemoteDescriptor.h
+13 -11
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@@ -31,16 +31,24 @@ public:
uint16_t getHandle();
NimBLERemoteCharacteristic* getRemoteCharacteristic();
NimBLEUUID getUUID();
std::string readValue(void);
uint8_t readUInt8(void);
uint16_t readUInt16(void);
uint32_t readUInt32(void);
std::string readValue();
template<typename T>
T readValue(bool skipSizeCheck = false) {
std::string value = readValue();
if(!skipSizeCheck && value.size() < sizeof(T)) return T();
const char *pData = value.data();
return *((T *)pData);
}
uint8_t readUInt8() __attribute__ ((deprecated));
uint16_t readUInt16() __attribute__ ((deprecated));
uint32_t readUInt32() __attribute__ ((deprecated));
std::string toString(void);
bool writeValue(const uint8_t* data, size_t length, bool response = false);
bool writeValue(const std::string &newValue, bool response = false);
bool writeValue(uint8_t newValue, bool response = false);
private:
friend class NimBLERemoteCharacteristic;
@@ -50,16 +58,10 @@ private:
struct ble_gatt_attr *attr, void *arg);
static int onReadCB(uint16_t conn_handle, const struct ble_gatt_error *error,
struct ble_gatt_attr *attr, void *arg);
void releaseSemaphores();
uint16_t m_handle;
NimBLEUUID m_uuid;
std::string m_value;
NimBLERemoteCharacteristic* m_pRemoteCharacteristic;
FreeRTOS::Semaphore m_semaphoreReadDescrEvt = FreeRTOS::Semaphore("ReadDescrEvt");
FreeRTOS::Semaphore m_semaphoreDescWrite = FreeRTOS::Semaphore("WriteDescEvt");
};
#endif // #if defined( CONFIG_BT_NIMBLE_ROLE_CENTRAL)