diff --git a/bsl/csl/interfaces/delay.hpp b/bsl/csl/interfaces/delay.hpp
index 6e81ac1..165a27b 100644
--- a/bsl/csl/interfaces/delay.hpp
+++ b/bsl/csl/interfaces/delay.hpp
@@ -8,7 +8,7 @@ class Delay
 	public:
 		Delay(); 
 		~Delay(); 	
-		void us(uint16_t delay); 
+		void ms(uint16_t delay); 
 	private: 
 };
 
diff --git a/bsl/csl/rpi/CMakeLists.txt b/bsl/csl/rpi/CMakeLists.txt
index 6963876..fb78d6c 100644
--- a/bsl/csl/rpi/CMakeLists.txt
+++ b/bsl/csl/rpi/CMakeLists.txt
@@ -1,4 +1,4 @@
 ####################################################################################################
 #SUBDIRECTORIES
 ####################################################################################################
-#add_subdirectory(Src)
+add_subdirectory(Src)
diff --git a/bsl/csl/rpi/Src/CMakeLists.txt b/bsl/csl/rpi/Src/CMakeLists.txt
index 1eeb63d..14c745f 100644
--- a/bsl/csl/rpi/Src/CMakeLists.txt
+++ b/bsl/csl/rpi/Src/CMakeLists.txt
@@ -1,6 +1,13 @@
-add_library(rpiGpio gpio.cpp)
+#add_library(rpiGpio gpio.cpp)
 
-target_compile_options(rpiGpio PRIVATE ${C_FLAGS})
-target_compile_definitions(rpiGpio PRIVATE ${C_DEFS})
-target_include_directories(rpiGpio PRIVATE ${INTERFACES_DIR} ../Inc)
-add_library(sub::gpio ALIAS rpiGpio)
+#target_compile_options(rpiGpio PRIVATE ${C_FLAGS})
+#target_compile_definitions(rpiGpio PRIVATE ${C_DEFS})
+#target_include_directories(rpiGpio PRIVATE ${INTERFACES_DIR} ../Inc)
+#add_library(sub::gpio ALIAS rpiGpio)
+
+add_library(rpiDelay delay.cpp)
+
+target_compile_options(rpiDelay PRIVATE ${C_FLAGS})
+target_compile_definitions(rpiDelay PRIVATE ${C_DEFS})
+target_include_directories(rpiDelay PRIVATE ${INTERFACES_DIR} ../Inc)
+add_library(sub::delay ALIAS rpiDelay)
diff --git a/bsl/csl/rpi/Src/delay.cpp b/bsl/csl/rpi/Src/delay.cpp
new file mode 100644
index 0000000..e13a60d
--- /dev/null
+++ b/bsl/csl/rpi/Src/delay.cpp
@@ -0,0 +1,17 @@
+#include "delay.hpp" 
+#include <unistd.h>
+
+Delay::Delay()
+{
+
+}
+
+Delay::~Delay()
+{
+
+}
+
+void Delay::ms(uint16_t delay)
+{
+	usleep(1000*delay);
+}
diff --git a/bsl/csl/stm32f042/Src/delay.cpp b/bsl/csl/stm32f042/Src/delay.cpp
index aabf707..74b4745 100644
--- a/bsl/csl/stm32f042/Src/delay.cpp
+++ b/bsl/csl/stm32f042/Src/delay.cpp
@@ -13,7 +13,7 @@ Delay::~Delay()
 
 }
 
-void Delay::us(uint16_t delay)
+void Delay::ms(uint16_t delay)
 {
 	LL_mDelay(delay); 
 }
diff --git a/bsl/nucleo_f042k6/bsl_nucleo_f042k6.cpp b/bsl/nucleo_f042k6/bsl_nucleo_f042k6.cpp
index 0a41826..bffa639 100644
--- a/bsl/nucleo_f042k6/bsl_nucleo_f042k6.cpp
+++ b/bsl/nucleo_f042k6/bsl_nucleo_f042k6.cpp
@@ -11,9 +11,9 @@ int startBSL()
 
 	while(1)
 	{
-		delay.us(500);
+		delay.ms(50);
 		pin.write(true);
-		delay.us(500);
+		delay.ms(50);
 		pin.write(false);
 	}
 
diff --git a/bsl/raspberry/bslConfig.cmake b/bsl/raspberry/bslConfig.cmake
index e062ff7..c5882ce 100644
--- a/bsl/raspberry/bslConfig.cmake
+++ b/bsl/raspberry/bslConfig.cmake
@@ -26,3 +26,4 @@ set (CPP_FLAGS ${C_FLAGS})
 set (CPP_DEFS ${C_DEFS})
 
 list(APPEND EXTRA_LIBS sub::translator)
+list(APPEND EXTRA_LIBS sub::delay)
diff --git a/bsl/raspberry/bsl_raspberry.cpp b/bsl/raspberry/bsl_raspberry.cpp
index a12470c..c4c97d0 100644
--- a/bsl/raspberry/bsl_raspberry.cpp
+++ b/bsl/raspberry/bsl_raspberry.cpp
@@ -1,8 +1,17 @@
 #include "bsl_raspberry.hpp"
+#include "../csl/interfaces/delay.hpp" 
 
 int startBSL()
 {
-	std::cout << "Hello from raspberry" << std::endl; 
+	int i = 0; 
+
+	Delay delay; 
+
+	for(i=0; i < 5; i++)
+	{
+		std::cout << "Hello from raspberry" << std::endl; 
+		delay.ms(500);
+	}
 	return 1;
 }