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authorRomain Forlot <romain.forlot@iot.bzh>2017-02-21 08:15:58 +0000
committerRomain Forlot <romain.forlot@iot.bzh>2017-02-21 11:00:03 +0000
commit913ac4ead2a8140db8607cef8b216ca997b8401e (patch)
tree64e85836f79acac6679e223c4a97cb0eb1a83c85
parentef610b379f59f89350f6f9dd8ff11a00066e2c05 (diff)
Fixed can bus class (almost)
Change-Id: Icb76d26749e0e7b5f122676861ed09ac0c03be30 Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>
-rw-r--r--src/can-utils.cpp298
-rw-r--r--src/can-utils.hpp11
2 files changed, 156 insertions, 153 deletions
diff --git a/src/can-utils.cpp b/src/can-utils.cpp
index d2ddb1d9..a50bfd4c 100644
--- a/src/can-utils.cpp
+++ b/src/can-utils.cpp
@@ -17,6 +17,103 @@
#include "can-utils.hpp"
+
+/********************************************************************************
+*
+* CanMessage method implementation
+*
+*********************************************************************************/
+
+can_message_t::can_message_t(const struct afb_binding_interface* interface)
+ : interface_{interface}
+{}
+
+uint32_t can_message_t::get_id() const
+{
+ (id_ != 0) ? return id_ : return 0;
+}
+
+int can_message_t::get_format() const
+{
+ (format_ != CanMessageFormat::SIMPLE || format_ != CanMessageFormat::EXTENDED) return -1 : return format_;
+}
+
+uint8_t can_message_t::get_data() const
+{
+ return data_;
+}
+uint8_t can_message_t::get_lenght() const
+{
+ return lenght_;
+}
+
+void can_message_t::set_id(uint32_t &new_id)
+{
+ switch(format):
+ case CanMessageFormat::SIMPLE:
+ id = new_id & CAN_SFF_MASK;
+ case CanMessageFormat::EXTENDED:
+ id = new_id & CAN_EFF_MASK;
+ default:
+ ERROR(interface_, "ERROR: Can set id, not a compatible format or format not set prior to set id.");
+}
+
+void can_message_t::set_format(CanMessageFormat &new_format)
+{
+ if(new_format == CanMessageFormat::SIMPLE || new_format == CanMessageFormat::EXTENDED)
+ format = new_format;
+ else
+ ERROR(interface_, "ERROR: Can set format, wrong format chosen");
+}
+
+void can_message_t::set_data(uint8_t &new_data)
+{
+ ::memcpy(data_, new_data, new_data.size());
+ lenght_ = new_data(size);
+}
+
+/*
+ * This is the preferred way to initialize a CanMessage object
+ * from a read canfd_frame message.
+ *
+ * params: canfd_frame pointer
+ */
+void can_message_t::convert_from_canfd_frame(canfd_frame &frame)
+{
+ lenght_ = (frame.len > CAN_MAX_DLEN) ? CAN_MAX_DLEN : frame.len;
+ lenght_ = (frame.len > CANFD_MAX_DLEN) ? CANFD_MAX_DLEN : frame.len;
+
+ switch (frame.can_id):
+ case (frame.can_id & CAN_ERR_FLAG):
+ id_ = frame.can_id & (CAN_ERR_MASK|CAN_ERR_FLAG);
+ break;
+ case (frame.can_id & CAN_EFF_FLAG):
+ id_ = frame.can_id & CAN_EFF_MASK;
+ format_ = CanMessageFormat::EXTENDED;
+ break;
+ default:
+ format_ = CanMessageFormat::STANDARD;
+ id_ = frame.can_id & CAN_SFF_MASK;
+ break;
+
+ if (sizeof(frame.data) <= data_.size())
+ {
+ ::memcpy(data_, canfd_frame.data, lenght_);
+ return 0;
+ } else if (sizeof(frame.data) >= CAN_MAX_DLEN)
+ ERROR(interface_, "can_message_t: canfd_frame data too long to be stored into CanMessage object");
+}
+
+canfd_frame can_message_t::convert_to_canfd_frame()
+{
+ canfd_frame frame;
+
+ frame.can_id = get_id();
+ frame.len = get_lenght();
+ ::memcpy(frame.data, get_data(), lenght_);
+
+ return frame;
+}
/********************************************************************************
*
* can_bus_dev_t method implementation
@@ -182,6 +279,38 @@ bool can_bus_dev_t::has_can_message() const
return has_can_message_;
}
+/**
+ * @brief Send a can message from a can_message_t object.
+ *
+ * params[const can_message_t& can_msg] the can message object to send
+ *
+ */
+int can_bus_dev_t::send_can_message(can_message_t& can_msg, const struct afb_binding_interface* interface)
+{
+ size_t nbytes;
+ canfd_frame f;
+
+ f = can_msg.convert_to_canfd_frame();
+
+ if(can_socket_ >= 0)
+ {
+ nbytes = ::sendto(can_socket_, &f, sizeof(struct canfd_frame), 0,
+ (struct sockaddr*)&txAddress_, sizeof(txAddress_));
+
+ if (nbytes == -1)
+ {
+ ERROR(interface, "send_can_message: Sending CAN frame failed.");
+ return -1;
+ }
+ return (int)nbytes;
+ }
+ else
+ {
+ ERROR(interface, "send_can_message: socket not initialized. Attempt to reopen can device socket.");
+ open(interface);
+ }
+ return 0;
+}
/********************************************************************************
*
* can_bus_t method implementation
@@ -213,7 +342,7 @@ void can_bus_t::start_threads()
int can_bus_t::init_can_dev()
{
std::vector<std::string> devices_name;
- int i, ret;
+ int i;
size_t t;
devices_name = read_conf();
@@ -227,7 +356,7 @@ int can_bus_t::init_can_dev()
{
can_bus_dev_t can_bus_device_handler(device);
can_bus_device_handler.open(interface_);
- can_bus_device_handler.start_reading(interface_);
+ can_bus_device_handler.start_reading();
i++;
}
@@ -246,72 +375,40 @@ int can_bus_t::init_can_dev()
std::vector<std::string> can_bus_t::read_conf()
{
std::vector<std::string> ret;
- json_object jo, canbus;
+ json_object *jo, *canbus;
int n, i, ok;
- if (conf_file_)
+ FILE *fd = fdopen(conf_file_, "r");
+ if (fd)
{
std::string fd_conf_content;
- std::fseek(conf_file_, 0, SEEK_END);
- fd_conf_content.resize(std::ftell(conf_file_));
- std::rewind(fp);
- std::fread(&fd_conf_content[0], 1, fd_conf_content.size(), conf_file_);
- std::fclose(conf_file_);
+ std::fseek(fd, 0, SEEK_END);
+ fd_conf_content.resize(std::ftell(fd));
+ std::rewind(fd);
+ std::fread(&fd_conf_content[0], 1, fd_conf_content.size(), fd);
+ std::fclose(fd);
- jo = json_tokener_parse(&fd_conf_content);
+ jo = json_tokener_parse(fd_conf_content.c_str());
- if (jo == NULL || !json_object_object_get_ex(&jo, "canbus", &&canbus))
+ if (jo == NULL || !json_object_object_get_ex(jo, "canbus", &canbus))
{
ERROR(interface_, "Can't find canbus node in the configuration file. Please review it.");
ret.clear();
}
else if (json_object_get_type(canbus) != json_type_array)
- ret.push_back(json_object_get_string(a));
+ ret.push_back(json_object_get_string(canbus));
else
{
- n = json_object_array_length(a);
+ n = json_object_array_length(canbus);
ok = 0;
for (i = 0 ; i < n ; i++)
- ret.push_back(json_object_get_string(json_object_array_get_idx(a, i)));
+ ret.push_back(json_object_get_string(json_object_array_get_idx(canbus, i)));
}
return ret;
}
ERROR(interface_, "Problem at reading the conf file");
- return ret.clear();
-}
-
-/**
- * @brief Send a can message from a can_message_t object.
- * TODO: specify which can_dev to use as we can use many
- *
- * params[const can_message_t& can_msg] the can message object to send
- *
- */
-int can_bus_t::send_can_message(const can_message_t &can_msg)
-{
- int nbytes;
- canfd_frame *f;
-
- f = can_msg.convert_to_canfd_frame();
-
- if(can_socket_ >= 0)
- {
- nbytes = ::sendto(can_socket_, &f, sizeof(struct canfd_frame), 0,
- (struct sockaddr*)&txAddress, sizeof(txAddress));
-
- if (nbytes == -1)
- {
- ERROR(interface_, "send_can_message: Sending CAN frame failed.");
- return -1;
- }
- return nbytes;
- }
- else
- {
- ERROR(interface_, "send_can_message: socket not initialized. Attempt to reopen can device socket.");
- open();
- }
- return 0;
+ ret.clear();
+ return ret;
}
/**
@@ -320,13 +417,13 @@ int can_bus_t::send_can_message(const can_message_t &can_msg)
*
* @return the next queue element or NULL if queue is empty.
*/
-openxc_VehicleMessage* can_bus_t::next_vehicle_message()
+openxc_VehicleMessage can_bus_t::next_vehicle_message()
{
if(! vehicle_message_q_.empty())
{
openxc_VehicleMessage v_msg = vehicle_message_q_.front();
vehicle_message_q_.pop();
- return &v_msg;
+ return v_msg;
}
has_vehicle_message_ = false;
@@ -353,101 +450,4 @@ void can_bus_t::push_new_vehicle_message(const openxc_VehicleMessage& v_msg)
bool can_bus_t::has_vehicle_message() const
{
return has_vehicle_message_;
-}
-
-/********************************************************************************
-*
-* CanMessage method implementation
-*
-*********************************************************************************/
-
-can_message_t::can_message_t(afb_binding_interface *itf)
- : interface_{itf}
-{}
-
-uint32_t can_message_t::get_id() const
-{
- (id_ != 0) ? return id_ : return 0;
-}
-
-int can_message_t::get_format() const
-{
- (format_ != CanMessageFormat::SIMPLE || format_ != CanMessageFormat::EXTENDED) return -1 : return format_;
-}
-
-uint8_t can_message_t::get_data() const
-{
- return data_;
-}
-uint8_t can_message_t::get_lenght() const
-{
- return lenght_;
-}
-
-void can_message_t::set_id(uint32_t &new_id)
-{
- switch(format):
- case CanMessageFormat::SIMPLE:
- id = new_id & CAN_SFF_MASK;
- case CanMessageFormat::EXTENDED:
- id = new_id & CAN_EFF_MASK;
- default:
- ERROR(interface_, "ERROR: Can set id, not a compatible format or format not set prior to set id.");
-}
-
-void can_message_t::set_format(CanMessageFormat &new_format)
-{
- if(new_format == CanMessageFormat::SIMPLE || new_format == CanMessageFormat::EXTENDED)
- format = new_format;
- else
- ERROR(interface_, "ERROR: Can set format, wrong format chosen");
-}
-
-void can_message_t::set_data(uint8_t &new_data)
-{
- ::memcpy(data_, new_data, new_data.size());
- lenght_ = new_data(size);
-}
-
-/*
- * This is the preferred way to initialize a CanMessage object
- * from a read canfd_frame message.
- *
- * params: canfd_frame pointer
- */
-void can_message_t::convert_from_canfd_frame(canfd_frame &frame)
-{
- lenght_ = (frame.len > CAN_MAX_DLEN) ? CAN_MAX_DLEN : frame.len;
- lenght_ = (frame.len > CANFD_MAX_DLEN) ? CANFD_MAX_DLEN : frame.len;
-
- switch (frame.can_id):
- case (frame.can_id & CAN_ERR_FLAG):
- id_ = frame.can_id & (CAN_ERR_MASK|CAN_ERR_FLAG);
- break;
- case (frame.can_id & CAN_EFF_FLAG):
- id_ = frame.can_id & CAN_EFF_MASK;
- format_ = CanMessageFormat::EXTENDED;
- break;
- default:
- format_ = CanMessageFormat::STANDARD;
- id_ = frame.can_id & CAN_SFF_MASK;
- break;
-
- if (sizeof(frame.data) <= data_.size())
- {
- ::memcpy(data_, canfd_frame.data, lenght_);
- return 0;
- } else if (sizeof(frame.data) >= CAN_MAX_DLEN)
- ERROR(interface_, "can_message_t: canfd_frame data too long to be stored into CanMessage object");
-}
-
-canfd_frame can_message_t::convert_to_canfd_frame()
-{
- canfd_frame frame;
-
- frame.can_id = get_id();
- frame.len = get_lenght();
- ::memcpy(frame.data, get_data(), lenght_);
-
- return frame;
-}
+} \ No newline at end of file
diff --git a/src/can-utils.hpp b/src/can-utils.hpp
index d1310a6d..ea116b78 100644
--- a/src/can-utils.hpp
+++ b/src/can-utils.hpp
@@ -29,6 +29,7 @@
#include <sys/ioctl.h>
#include <linux/can.h>
#include <sys/socket.h>
+#include <json-c/json.h>
#include <linux/can/raw.h>
#include "timer.hpp"
@@ -115,13 +116,15 @@ typedef struct CanMessage CanMessage;
*/
class can_message_t {
private:
- const struct afb_binding_interface *interface_;
+ const struct afb_binding_interface* interface_;
uint32_t id_;
CanMessageFormat format_;
uint8_t data_[CAN_MESSAGE_SIZE];
uint8_t length_;
public:
+ can_message_t(const struct afb_binding_interface* interface);
+
uint32_t get_id() const;
int get_format() const;
uint8_t get_data() const;
@@ -167,6 +170,8 @@ class can_bus_dev_t {
can_message_t next_can_message();
void push_new_can_message(const can_message_t& can_msg);
bool has_can_message() const;
+
+ int send_can_message(can_message_t& can_msg, const struct afb_binding_interface* interface);
};
/**
@@ -193,9 +198,7 @@ class can_bus_t {
void start_threads();
- int send_can_message(can_message_t can_msg);
-
- openxc_VehicleMessage& next_vehicle_message();
+ openxc_VehicleMessage next_vehicle_message();
void push_new_vehicle_message(const openxc_VehicleMessage& v_msg);
bool has_vehicle_message() const;
};