diff options
Diffstat (limited to 'sensor/patchedBLE/src/BLERemoteDescriptor.cpp')
| -rw-r--r-- | sensor/patchedBLE/src/BLERemoteDescriptor.cpp | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/sensor/patchedBLE/src/BLERemoteDescriptor.cpp b/sensor/patchedBLE/src/BLERemoteDescriptor.cpp new file mode 100644 index 0000000..4d14ba8 --- /dev/null +++ b/sensor/patchedBLE/src/BLERemoteDescriptor.cpp @@ -0,0 +1,185 @@ +/* + * BLERemoteDescriptor.cpp + * + * Created on: Jul 8, 2017 + * Author: kolban + */ +#include "sdkconfig.h" +#if defined(CONFIG_BT_ENABLED) +#include <sstream> +#include "BLERemoteDescriptor.h" +#include "GeneralUtils.h" +#include <esp_log.h> +#ifdef ARDUINO_ARCH_ESP32 +#include "esp32-hal-log.h" +#endif + +static const char* LOG_TAG = "BLERemoteDescriptor"; + + +BLERemoteDescriptor::BLERemoteDescriptor( + uint16_t handle, + BLEUUID uuid, + BLERemoteCharacteristic* pRemoteCharacteristic) { + + m_handle = handle; + m_uuid = uuid; + m_pRemoteCharacteristic = pRemoteCharacteristic; +} + + +/** + * @brief Retrieve the handle associated with this remote descriptor. + * @return The handle associated with this remote descriptor. + */ +uint16_t BLERemoteDescriptor::getHandle() { + return m_handle; +} // getHandle + + +/** + * @brief Get the characteristic that owns this descriptor. + * @return The characteristic that owns this descriptor. + */ +BLERemoteCharacteristic* BLERemoteDescriptor::getRemoteCharacteristic() { + return m_pRemoteCharacteristic; +} // getRemoteCharacteristic + + +/** + * @brief Retrieve the UUID associated this remote descriptor. + * @return The UUID associated this remote descriptor. + */ +BLEUUID BLERemoteDescriptor::getUUID() { + return m_uuid; +} // getUUID + + +std::string BLERemoteDescriptor::readValue(void) { + ESP_LOGD(LOG_TAG, ">> readValue: %s", toString().c_str()); + + // Check to see that we are connected. + if (!getRemoteCharacteristic()->getRemoteService()->getClient()->isConnected()) { + ESP_LOGE(LOG_TAG, "Disconnected"); + throw BLEDisconnectedException(); + } + + m_semaphoreReadDescrEvt.take("readValue"); + + // Ask the BLE subsystem to retrieve the value for the remote hosted characteristic. + esp_err_t errRc = ::esp_ble_gattc_read_char_descr( + m_pRemoteCharacteristic->getRemoteService()->getClient()->getGattcIf(), + m_pRemoteCharacteristic->getRemoteService()->getClient()->getConnId(), // The connection ID to the BLE server + getHandle(), // The handle of this characteristic + ESP_GATT_AUTH_REQ_NONE); // Security + + if (errRc != ESP_OK) { + ESP_LOGE(LOG_TAG, "esp_ble_gattc_read_char: rc=%d %s", errRc, GeneralUtils::errorToString(errRc)); + return ""; + } + + // Block waiting for the event that indicates that the read has completed. When it has, the std::string found + // in m_value will contain our data. + m_semaphoreReadDescrEvt.wait("readValue"); + + ESP_LOGD(LOG_TAG, "<< readValue(): length: %d", m_value.length()); + return m_value; +} // readValue + + +uint8_t BLERemoteDescriptor::readUInt8(void) { + std::string value = readValue(); + if (value.length() >= 1) { + return (uint8_t)value[0]; + } + return 0; +} // readUInt8 + + +uint16_t BLERemoteDescriptor::readUInt16(void) { + std::string value = readValue(); + if (value.length() >= 2) { + return *(uint16_t*)(value.data()); + } + return 0; +} // readUInt16 + + +uint32_t BLERemoteDescriptor::readUInt32(void) { + std::string value = readValue(); + if (value.length() >= 4) { + return *(uint32_t*)(value.data()); + } + return 0; +} // readUInt32 + + +/** + * @brief Return a string representation of this BLE Remote Descriptor. + * @retun A string representation of this BLE Remote Descriptor. + */ +std::string BLERemoteDescriptor::toString(void) { + std::stringstream ss; + ss << "handle: " << getHandle() << ", uuid: " << getUUID().toString(); + return ss.str(); +} // toString + + +/** + * @brief Write data to the BLE Remote Descriptor. + * @param [in] data The data to send to the remote descriptor. + * @param [in] length The length of the data to send. + * @param [in] response True if we expect a response. + */ +void BLERemoteDescriptor::writeValue( + uint8_t* data, + size_t length, + bool response) { + ESP_LOGD(LOG_TAG, ">> writeValue: %s", toString().c_str()); + // Check to see that we are connected. + if (!getRemoteCharacteristic()->getRemoteService()->getClient()->isConnected()) { + ESP_LOGE(LOG_TAG, "Disconnected"); + throw BLEDisconnectedException(); + } + + esp_err_t errRc = ::esp_ble_gattc_write_char_descr( + m_pRemoteCharacteristic->getRemoteService()->getClient()->getGattcIf(), + m_pRemoteCharacteristic->getRemoteService()->getClient()->getConnId(), + getHandle(), + length, // Data length + data, // Data + ESP_GATT_WRITE_TYPE_NO_RSP, + ESP_GATT_AUTH_REQ_NONE + ); + if (errRc != ESP_OK) { + ESP_LOGE(LOG_TAG, "esp_ble_gattc_write_char_descr: %d", errRc); + } + ESP_LOGD(LOG_TAG, "<< writeValue"); +} // writeValue + + +/** + * @brief Write data represented as a string to the BLE Remote Descriptor. + * @param [in] newValue The data to send to the remote descriptor. + * @param [in] response True if we expect a response. + */ +void BLERemoteDescriptor::writeValue( + std::string newValue, + bool response) { + writeValue(newValue.data(), newValue.length()); +} // writeValue + + +/** + * @brief Write a byte value to the Descriptor. + * @param [in] The single byte to write. + * @param [in] True if we expect a response. + */ +void BLERemoteDescriptor::writeValue( + uint8_t newValue, + bool response) { + writeValue(&newValue, 1, response); +} // writeValue + + +#endif /* CONFIG_BT_ENABLED */ |