diff --git a/ked/csl/stm32f042/Device/hardwareDescription.h b/ked/csl/stm32f042/Device/hardwareDescription.h
index 530a311..70dafba 100644
--- a/ked/csl/stm32f042/Device/hardwareDescription.h
+++ b/ked/csl/stm32f042/Device/hardwareDescription.h
@@ -230,6 +230,15 @@ static const  uint32_t timerRes_Prescaler[MAX_TIMER_CHANNEL_COUNT] = {
 	0xFFFF, /*!< Timer 17 Prescaler Max Value */ 
 };
 
+
+typedef enum{
+	SPI_CH_1,
+	SPI_CH_2
+} spiCH_t;
+
+
+
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/ked/csl/stm32f042/Src/spi.c b/ked/csl/stm32f042/Src/spi.c
index e69de29..05af6c0 100644
--- a/ked/csl/stm32f042/Src/spi.c
+++ b/ked/csl/stm32f042/Src/spi.c
@@ -0,0 +1,13 @@
+#include "spi.h"
+
+
+void spi_initMater(spiCH_t_spi_hw_ch)
+{
+
+}
+
+
+uint8_t spi_trx(spiCH_t_spi_hw_ch, uint8_t tx_data)
+{
+	return 0;
+}
diff --git a/main.c b/main.c
index 4afbfe9..4420bad 100644
--- a/main.c
+++ b/main.c
@@ -4,6 +4,7 @@
 #include "usart.h"
 #include "ascii.h"
 #include "timer.h"
+#include "spi.h"
 
 void timer_test(timerNo_t timer, pinNo_t pin)
 {
diff --git a/main.cpp b/main.cpp
index 1a9f936..e2eb625 100644
--- a/main.cpp
+++ b/main.cpp
@@ -4,6 +4,7 @@
 #include "usart.h"
 #include "ascii.h"
 #include "timer.h"
+#include "spi.h"
 
 void timer_test(timerNo_t timer, pinNo_t pin)
 {
diff --git a/tmux_workbench.sh b/tmux_workbench.sh
new file mode 100755
index 0000000..c9e0773
--- /dev/null
+++ b/tmux_workbench.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+
+dir=$(pwd)
+echo $dir
+
+tmux new -s 'git' -d 'fish'
+tmux new -s 'compile' -d 'fish'
+
+tmux new -s 'main' -d 'vim main.cpp'
+
+cd $dir/ked/csl/stm32f042/Src/
+tmux new -s 'src' -d 'fish'
+
+cd $dir/ked/csl/stm32f042/Device/
+tmux new -s 'device' -d 'fish'
+
+cd $dir/ked/csl/interfaces/
+tmux new -s 'interface' -d 'fish'
+
+tmux a