Line Connection#

The Line Connection camera feature allows you to set or determine the connection signal of the currently selected general purpose I/O line (GPIO line).

Connection signals are used to control certain camera features. For example, the "TWI SDA" and "TWI SCL" signals are used for Two-Wire Interface communication.

機能を使用する#

Line Connectionの設定#

ライン接続を設定するには、次の手順を実行します。

1. パラメーターを LineSelector parameter to the desired GPIO line.
2. パラメーターを BslLineConnection パラメーターを次のいずれかの値に設定します。
   • ConnectionOff: No connection signal is set for the currently selected line.
   • TwiSda: The TWI SDA signal is set for the currently selected line.
   • TwiScl: The TWI SCL signal is set for the currently selected line.
   • LightControl: The light control signal is set for the currently selected line.
3. Make sure the LineMode parameter is set to InOut. This allows you to use the GPIO line as an input-output line. If the parameter isn't automatically set to InOut, set it manually.

Line Connectionの確認#

ライン接続を確認するには、次の手順を実行します。

1. パラメーターを LineSelector parameter to the desired I/O line.
2. Get the value of the BslLineConnection parameter to determine the current line connection of the I/O line.

サンプルコード#

// Select Line 2
camera.LineSelector.SetValue(LineSelector_Line2);
// Set the line connection to TWI SDA
camera.BslLineConnection.SetValue(BslLineConnection_TwiSda);
// Get the current line connection
BslLineConnectionEnums e = camera.BslLineConnection.GetValue();

INodeMap& nodemap = camera.GetNodeMap();
// Select Line 2
CEnumParameter(nodemap, "LineSelector").SetValue("Line2");
// Set the line connection to TWI SDA
CEnumParameter(nodemap, "BslLineConnection").SetValue("TwiSda");
// Get the current line connection
String_t e = CEnumParameter(nodemap, "BslLineConnection").GetValue();

// Select Line 2
camera.Parameters[PLCamera.LineSelector].SetValue(PLCamera.LineSelector.Line2);
// Set the line connection to TWI SDA
camera.Parameters[PLCamera.BslLineConnection].SetValue(PLCamera.BslLineConnection.TwiSda);
// Get the current line connection
string e = camera.Parameters[PLCamera.BslLineConnection].GetValue();

/* Macro to check for errors */
#define CHECK(errc) if (GENAPI_E_OK != errc) printErrorAndExit(errc)
GENAPIC_RESULT errRes = GENAPI_E_OK;  /* Return value of pylon methods */
size_t len = 0;
char e_str[64] = {0};
/* Select Line 2 */
errRes = PylonDeviceFeatureFromString(hdev, "LineSelector", "Line2");
CHECK(errRes);
/* Set the line connection to TWI SDA */
errRes = PylonDeviceFeatureFromString(hdev, "BslLineConnection", "TwiSda");
CHECK(errRes);
/* Get the current line connection */
len = sizeof(e_str);
errRes = PylonDeviceFeatureToString(hdev, "BslLineConnection", e_str, &len);
CHECK(errRes);

# Select Line 2
camera.LineSelector.Value = "Line2"
# Set the line connection to TWI SDA
camera.BslLineConnection.Value = "TwiSda"
# Get the current line connection
e = camera.BslLineConnection.Value

pylon Viewerを使用して、パラメーターを簡単に設定することもできます。