#include <map>
#include <mutex>
#include <unistd.h>
-#include <string.h>
-#include <net/if.h>
-#include <sys/ioctl.h>
#include <linux/can/raw.h>
#include "can-bus-dev.hpp"
/// We try to open CAN socket and apply the following options
/// timestamp received messages and pass the socket to FD mode.
///
-/// @return -1 if something wrong.
-int can_bus_dev_t::open()
+/// @param[in] bcm boolean value indicating wether or not we initialize a Broadcast CAN Manager socket.
+///
+/// @return socket value or -1 if something wrong.
+int can_bus_dev_t::open(bool bcm)
{
- const int canfd_on = 1;
- const int timestamp_on = 1;
- struct ifreq ifr;
- struct timeval timeout;
-
- DEBUG(binder_interface, "open: CAN Handler socket : %d", can_socket_.socket());
- if (can_socket_)
- return 0;
+ DEBUG(binder_interface, "open_raw: CAN Handler socket : %d", can_socket_.socket());
+ return can_socket_.open(device_name_, bcm);
+}
- can_socket_.open(PF_CAN, SOCK_RAW, CAN_RAW);
+/// @brief Set some option on the socket, timestamp and canfd frame usage.
+void can_bus_dev_t::configure()
+{
if (can_socket_)
{
- DEBUG(binder_interface, "open: CAN Handler socket correctly initialized : %d", can_socket_.socket());
+ const int timestamp_on = 1;
+ const int canfd_on = 1;
- // Set timeout for read
- can_socket_.setopt(SOL_SOCKET, SO_RCVTIMEO, (char *)&timeout, sizeof(timeout));
+ DEBUG(binder_interface, "open_raw: CAN Handler socket correctly initialized : %d", can_socket_.socket());
// Set timestamp for receveid frame
if (can_socket_.setopt(SOL_SOCKET, SO_TIMESTAMP, ×tamp_on, sizeof(timestamp_on)) < 0)
- WARNING(binder_interface, "open: setsockopt SO_TIMESTAMP error: %s", ::strerror(errno));
- DEBUG(binder_interface, "open: Switch CAN Handler socket to use fd mode");
+ WARNING(binder_interface, "open_raw: setsockopt SO_TIMESTAMP error: %s", ::strerror(errno));
+ DEBUG(binder_interface, "open_raw: Switch CAN Handler socket to use fd mode");
// try to switch the socket into CAN_FD mode
if (can_socket_.setopt(SOL_CAN_RAW, CAN_RAW_FD_FRAMES, &canfd_on, sizeof(canfd_on)) < 0)
{
- NOTICE(binder_interface, "open: Can not switch into CAN Extended frame format.");
+ NOTICE(binder_interface, "open_raw: Can not switch into CAN Extended frame format.");
is_fdmode_on_ = false;
}
else
{
- DEBUG(binder_interface, "open: Correctly set up CAN socket to use FD frames.");
+ DEBUG(binder_interface, "open_raw: Correctly set up CAN socket to use FD frames.");
is_fdmode_on_ = true;
}
-
- // Attempts to open a socket to CAN bus
- ::strcpy(ifr.ifr_name, device_name_.c_str());
- DEBUG(binder_interface, "open: ifr_name is : %s", ifr.ifr_name);
- if(::ioctl(can_socket_.socket(), SIOCGIFINDEX, &ifr) < 0)
- {
- ERROR(binder_interface, "open: ioctl failed. Error was : %s", strerror(errno));
- }
- else
- {
- txAddress_.can_family = AF_CAN;
- txAddress_.can_ifindex = ifr.ifr_ifindex;
-
- // And bind it to txAddress
- DEBUG(binder_interface, "Bind the socket");
- if (can_socket_.bind((struct sockaddr *)&txAddress_, sizeof(txAddress_)) < 0)
- ERROR(binder_interface, "Bind failed. %s", strerror(errno));
- else return 0;
- }
- close();
}
- else ERROR(binder_interface, "open: socket could not be created. Error was : %s", ::strerror(errno));
- return -1;
+ else
+ {
+ ERROR(binder_interface, "open_raw: socket could not be created. Error was : %s", ::strerror(errno));
+ }
}
/// @brief Close the bus.
if(can_socket_)
{
- nbytes = ::sendto(can_socket_.socket(), &f, sizeof(struct canfd_frame), 0,
- (struct sockaddr*)&txAddress_, sizeof(txAddress_));
+ nbytes = can_socket_.send(f);
if (nbytes == -1)
{
ERROR(binder_interface, "send_can_message: Sending CAN frame failed.");
else
{
ERROR(binder_interface, "send_can_message: socket not initialized. Attempt to reopen can device socket.");
- open();
+ open(true);
+ return -1;
}
return 0;
}
if(can_socket_)
{
- nbytes = ::sendto(can_socket_.socket(), &f, sizeof(struct canfd_frame), 0,
- (struct sockaddr*)&txAddress_, sizeof(txAddress_));
+ nbytes = can_socket_.send(f);
if (nbytes == -1)
{
ERROR(binder_interface, "send_can_message: Sending CAN frame failed.");
else
{
ERROR(binder_interface, "send_can_message: socket not initialized. Attempt to reopen can device socket.");
- open();
+ open(true);
}
return false;
}