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Add NimBLEAttValue class. (#67)

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This is a specialized container class to hold BLE attribute values.

- Removes the use of std::string previously used to store the values.
- Allows for setting/getting/notifying values from std::string, std::vector<uint8_t>, Arduino String, const char*, and uint8_t buffers.
- Has operators retrieve the value as std::string, Arduino String, std::vector<uint8_t>, uint8_t* or char pointers.
- Includes iterators and subscript/random access operator.
- Introduces a max length parameter to the creation of server characteristics/descriptors to limit the size of the memory footprint.
- Nearly Seamless integration with existing code.
- Adds a config option to enable/disable timestamp storage when the value is updated.
- Adds a config option to specify the initial size of the value container if not specified in the constructor.
This commit is contained in:
h2zero
2022-01-16 20:11:18 -07:00
committed by GitHub
parent be9cdc1ab6
commit e3ee082dd7
17 changed files with 901 additions and 296 deletions
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src/NimBLEService.cpp
+6 -4
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@@ -250,10 +250,11 @@ uint16_t NimBLEService::getHandle() {
* @brief Create a new BLE Characteristic associated with this service.
* @param [in] uuid - The UUID of the characteristic.
* @param [in] properties - The properties of the characteristic.
* @param [in] max_len - The maximum length in bytes that the characteristic value can hold.
* @return The new BLE characteristic.
*/
NimBLECharacteristic* NimBLEService::createCharacteristic(const char* uuid, uint32_t properties) {
return createCharacteristic(NimBLEUUID(uuid), properties);
NimBLECharacteristic* NimBLEService::createCharacteristic(const char* uuid, uint32_t properties, uint16_t max_len) {
return createCharacteristic(NimBLEUUID(uuid), properties, max_len);
}
@@ -261,10 +262,11 @@ NimBLECharacteristic* NimBLEService::createCharacteristic(const char* uuid, uint
* @brief Create a new BLE Characteristic associated with this service.
* @param [in] uuid - The UUID of the characteristic.
* @param [in] properties - The properties of the characteristic.
* @param [in] max_len - The maximum length in bytes that the characteristic value can hold.
* @return The new BLE characteristic.
*/
NimBLECharacteristic* NimBLEService::createCharacteristic(const NimBLEUUID &uuid, uint32_t properties) {
NimBLECharacteristic* pCharacteristic = new NimBLECharacteristic(uuid, properties, this);
NimBLECharacteristic* NimBLEService::createCharacteristic(const NimBLEUUID &uuid, uint32_t properties, uint16_t max_len) {
NimBLECharacteristic* pCharacteristic = new NimBLECharacteristic(uuid, properties, max_len, this);
if (getCharacteristic(uuid) != nullptr) {
NIMBLE_LOGD(LOG_TAG, "<< Adding a duplicate characteristic with UUID: %s",