bindings: cxx: new example

Add a test case to C++ examples demonstrating the manipulation of
several lines held by a line_bulk object.

Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>

diff --git a/bindings/cxx/examples/gpio_cxx_tests.cpp b/bindings/cxx/examples/gpio_cxx_tests.cpp
index b6de15c70e85df0c18637bdb975408c641a7a6d8..c20a9c981033d3332fc5892282a75ba003a0b3c3 100644 (file)
--- a/bindings/cxx/examples/gpio_cxx_tests.cpp
+++ b/bindings/cxx/examples/gpio_cxx_tests.cpp
@@ -147,6 +147,42 @@ void single_line_test(void)
 }
 TEST_CASE(single_line_test);
 
+void multiple_lines_test(void)
+{
+       ::gpiod::chip chip("gpiochip0");
+
+       ::std::cout << "Getting multiple lines by offsets" << ::std::endl;
+
+       ::gpiod::line_bulk lines = chip.get_lines({ 0, 2, 3, 4, 6 });
+
+       ::std::cout << "Requesting them for output" << ::std::endl;
+
+       ::gpiod::line_request config;
+       config.consumer = "gpiod_cxx_tests";
+       config.request_type = ::gpiod::line_request::DIRECTION_OUTPUT;
+
+       lines.request(config, { 0, 0, 0, 0, 0 });
+
+       ::std::cout << "Setting values" << ::std::endl;
+
+       lines.set_values({ 0, 1, 1, 0, 1});
+
+       ::std::cout << "Requesting the lines for input" << ::std::endl;
+
+       config.request_type = ::gpiod::line_request::DIRECTION_INPUT;
+       lines.release();
+       lines.request(config);
+
+       ::std::cout << "Reading the values" << ::std::endl;
+
+       auto vals = lines.get_values();
+
+       for (auto& it: vals)
+               ::std::cout << it << " ";
+       ::std::cout << ::std::endl;
+}
+TEST_CASE(multiple_lines_test);
+
 } /* namespace */
 
 int main(int, char **)