diff options
Diffstat (limited to 'can_reader.cpp')
-rw-r--r-- | can_reader.cpp | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/can_reader.cpp b/can_reader.cpp new file mode 100644 index 00000000..f5e2833e --- /dev/null +++ b/can_reader.cpp @@ -0,0 +1,69 @@ +/* + * Copyright (C) 2015, 2016 "IoT.bzh" + * Author "Romain Forlot" <romain.forlot@iot.bzh> + * Author "Loic Collignon" <loic.collignon@iot.bzh> + * + * 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 <linux/can.h> +#include <linux/can/raw.h> + +#include <afb/afb-binding.h> + +void can_reader(afb_binding_interface *interface, int socket, std::queue <canfd_frame>& canfd_frame_queue) +{ + ssize_t nbytes; + int maxdlen; + + /* Test that socket is really opened */ + if ( socket < 0) + { + ERROR(interface, "read_can: Socket unavailable"); + return -1; + } + + while(true) + { + nbytes = read(socket, &canfd_frame, CANFD_MTU); + + switch(nbytes) + { + case CANFD_MTU:s + DEBUG(interface, "read_can: Got an CAN FD frame with length %d", canfd_frame.len); + maxdlen = CANFD_MAX_DLEN; + break; + case CAN_MTU: + DEBUG(interface, "read_can: Got a legacy CAN frame with length %d", canfd_frame.len); + maxdlen = CAN_MAX_DLEN; + break; + default: + if (errno == ENETDOWN) + ERROR(interface, "read_can: %s interface down", device); + + ERROR(interface, "read_can: Error reading CAN bus"); + return -2; + } + + /* + * TODO: thread handle + if (parse_can_frame(can_message, &canfd_frame, maxdlen)) + { + ERROR(interface, "read_can: Can't parse the can frame. ID: %i, DLC: %i, DATA: %s", + canfd_frame.can_id, canfd_frame.len, canfd_frame.data); + return -4; + } + */ + canfd_frame_queue.push(canfd_frame); + } +} |