// // Copyright 2017 The Android Open Source Project // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. // #include "hci_protocol.h" #include #include #include #include #include "log.h" namespace rootcanal { size_t HciProtocol::WriteSafely(AsyncDataChannel* socket, const uint8_t* data, size_t length) { size_t transmitted_length = 0; while (length > 0) { ssize_t ret = socket->Send(data + transmitted_length, length); if (ret == -1) { if (errno == EAGAIN) continue; LOG_ERROR("%s error writing to UART (%s)", __func__, strerror(errno)); break; } else if (ret == 0) { // Nothing written :( LOG_ERROR("%s zero bytes written - something went wrong...", __func__); break; } transmitted_length += ret; length -= ret; } return transmitted_length; } } // namespace rootcanal