diff --git a/cube/.mxproject b/cube/.mxproject
index 7f282d1..2fd1e3a 100644
--- a/cube/.mxproject
+++ b/cube/.mxproject
@@ -1,34 +1,32 @@
 [PreviousLibFiles]
-LibFiles=Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_iwdg.h;Drivers/STM32F1xx_HAL_Driver/Inc/Legacy/stm32_hal_legacy.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_def.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_rcc.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_rcc_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_gpio.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_gpio_ex.h;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio_ex.c;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_dma_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_dma.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_cortex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pwr.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_exti.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_spi.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_tim.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_tim_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_uart.h;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_iwdg.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_dma.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_cortex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pwr.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_exti.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_spi.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_uart.c;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_iwdg.h;Drivers/STM32F1xx_HAL_Driver/Inc/Legacy/stm32_hal_legacy.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_def.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_rcc.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_rcc_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_gpio.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_gpio_ex.h;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio_ex.c;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_dma_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_dma.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_cortex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pwr.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_exti.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_spi.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_tim.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_tim_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_uart.h;Drivers/CMSIS/Device/ST/STM32F1xx/Include/stm32f103xb.h;Drivers/CMSIS/Device/ST/STM32F1xx/Include/stm32f1xx.h;Drivers/CMSIS/Device/ST/STM32F1xx/Include/system_stm32f1xx.h;Drivers/CMSIS/Device/ST/STM32F1xx/Source/Templates/system_stm32f1xx.c;Drivers/CMSIS/Include/cmsis_armclang.h;Drivers/CMSIS/Include/core_armv8mml.h;Drivers/CMSIS/Include/core_cm0plus.h;Drivers/CMSIS/Include/tz_context.h;Drivers/CMSIS/Include/core_cm0.h;Drivers/CMSIS/Include/cmsis_compiler.h;Drivers/CMSIS/Include/core_cm3.h;Drivers/CMSIS/Include/core_sc000.h;Drivers/CMSIS/Include/core_cm23.h;Drivers/CMSIS/Include/core_cm1.h;Drivers/CMSIS/Include/mpu_armv7.h;Drivers/CMSIS/Include/core_cm33.h;Drivers/CMSIS/Include/cmsis_gcc.h;Drivers/CMSIS/Include/core_armv8mbl.h;Drivers/CMSIS/Include/cmsis_armcc.h;Drivers/CMSIS/Include/core_sc300.h;Drivers/CMSIS/Include/cmsis_iccarm.h;Drivers/CMSIS/Include/core_cm4.h;Drivers/CMSIS/Include/mpu_armv8.h;Drivers/CMSIS/Include/cmsis_version.h;Drivers/CMSIS/Include/core_cm7.h;
+LibFiles=Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_spi.h;Drivers/STM32F1xx_HAL_Driver/Inc/Legacy/stm32_hal_legacy.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_def.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_rcc.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_rcc_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_gpio.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_gpio_ex.h;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio_ex.c;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_dma_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_dma.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_cortex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pwr.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_exti.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_tim.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_tim_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_uart.h;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_spi.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_dma.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_cortex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pwr.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_exti.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_uart.c;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_spi.h;Drivers/STM32F1xx_HAL_Driver/Inc/Legacy/stm32_hal_legacy.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_def.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_rcc.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_rcc_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_gpio.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_gpio_ex.h;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio_ex.c;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_dma_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_dma.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_cortex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_pwr.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_flash_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_exti.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_tim.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_tim_ex.h;Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_uart.h;Drivers/CMSIS/Device/ST/STM32F1xx/Include/stm32f103xb.h;Drivers/CMSIS/Device/ST/STM32F1xx/Include/stm32f1xx.h;Drivers/CMSIS/Device/ST/STM32F1xx/Include/system_stm32f1xx.h;Drivers/CMSIS/Device/ST/STM32F1xx/Source/Templates/system_stm32f1xx.c;Drivers/CMSIS/Include/cmsis_armclang.h;Drivers/CMSIS/Include/core_armv8mml.h;Drivers/CMSIS/Include/core_cm0plus.h;Drivers/CMSIS/Include/tz_context.h;Drivers/CMSIS/Include/core_cm0.h;Drivers/CMSIS/Include/cmsis_compiler.h;Drivers/CMSIS/Include/core_cm3.h;Drivers/CMSIS/Include/core_sc000.h;Drivers/CMSIS/Include/core_cm23.h;Drivers/CMSIS/Include/core_cm1.h;Drivers/CMSIS/Include/mpu_armv7.h;Drivers/CMSIS/Include/core_cm33.h;Drivers/CMSIS/Include/cmsis_gcc.h;Drivers/CMSIS/Include/core_armv8mbl.h;Drivers/CMSIS/Include/cmsis_armcc.h;Drivers/CMSIS/Include/core_sc300.h;Drivers/CMSIS/Include/cmsis_iccarm.h;Drivers/CMSIS/Include/core_cm4.h;Drivers/CMSIS/Include/mpu_armv8.h;Drivers/CMSIS/Include/cmsis_version.h;Drivers/CMSIS/Include/core_cm7.h;
 
 [PreviousUsedMakefileFiles]
-SourceFiles=Core/Src/main.c;Core/Src/gpio.c;Core/Src/iwdg.c;Core/Src/spi.c;Core/Src/tim.c;Core/Src/usart.c;Core/Src/stm32f1xx_it.c;Core/Src/stm32f1xx_hal_msp.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_iwdg.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_dma.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_cortex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pwr.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_exti.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_spi.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_uart.c;Core/Src/system_stm32f1xx.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_iwdg.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_dma.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_cortex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pwr.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_exti.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_spi.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_uart.c;Core/Src/system_stm32f1xx.c;Drivers/CMSIS/Device/ST/STM32F1xx/Source/Templates/system_stm32f1xx.c;;
+SourceFiles=Core/Src/main.c;Core/Src/gpio.c;Core/Src/spi.c;Core/Src/tim.c;Core/Src/usart.c;Core/Src/stm32f1xx_it.c;Core/Src/stm32f1xx_hal_msp.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_spi.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_dma.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_cortex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pwr.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_exti.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_uart.c;Core/Src/system_stm32f1xx.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_spi.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_dma.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_cortex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pwr.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_exti.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim_ex.c;Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_uart.c;Core/Src/system_stm32f1xx.c;Drivers/CMSIS/Device/ST/STM32F1xx/Source/Templates/system_stm32f1xx.c;;
 HeaderPath=Drivers/STM32F1xx_HAL_Driver/Inc;Drivers/STM32F1xx_HAL_Driver/Inc/Legacy;Drivers/CMSIS/Device/ST/STM32F1xx/Include;Drivers/CMSIS/Include;Core/Inc;
 CDefines=USE_HAL_DRIVER;STM32F103xB;USE_HAL_DRIVER;USE_HAL_DRIVER;
 
 [PreviousGenFiles]
 AdvancedFolderStructure=true
-HeaderFileListSize=8
+HeaderFileListSize=7
 HeaderFiles#0=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Inc/gpio.h
-HeaderFiles#1=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Inc/iwdg.h
-HeaderFiles#2=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Inc/spi.h
-HeaderFiles#3=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Inc/tim.h
-HeaderFiles#4=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Inc/usart.h
-HeaderFiles#5=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Inc/stm32f1xx_it.h
-HeaderFiles#6=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Inc/stm32f1xx_hal_conf.h
-HeaderFiles#7=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Inc/main.h
+HeaderFiles#1=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Inc/spi.h
+HeaderFiles#2=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Inc/tim.h
+HeaderFiles#3=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Inc/usart.h
+HeaderFiles#4=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Inc/stm32f1xx_it.h
+HeaderFiles#5=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Inc/stm32f1xx_hal_conf.h
+HeaderFiles#6=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Inc/main.h
 HeaderFolderListSize=1
 HeaderPath#0=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Inc
 HeaderFiles=;
-SourceFileListSize=8
+SourceFileListSize=7
 SourceFiles#0=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Src/gpio.c
-SourceFiles#1=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Src/iwdg.c
-SourceFiles#2=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Src/spi.c
-SourceFiles#3=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Src/tim.c
-SourceFiles#4=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Src/usart.c
-SourceFiles#5=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Src/stm32f1xx_it.c
-SourceFiles#6=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Src/stm32f1xx_hal_msp.c
-SourceFiles#7=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Src/main.c
+SourceFiles#1=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Src/spi.c
+SourceFiles#2=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Src/tim.c
+SourceFiles#3=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Src/usart.c
+SourceFiles#4=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Src/stm32f1xx_it.c
+SourceFiles#5=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Src/stm32f1xx_hal_msp.c
+SourceFiles#6=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Src/main.c
 SourceFolderListSize=1
 SourcePath#0=/home/wn/Workspaces/mains-frequency-counter-stm32/cube/Core/Src
 SourceFiles=;
diff --git a/cube/Core/Inc/iwdg.h b/cube/Core/Inc/iwdg.h
deleted file mode 100644
index 8597ddd..0000000
--- a/cube/Core/Inc/iwdg.h
+++ /dev/null
@@ -1,58 +0,0 @@
-/**
-  ******************************************************************************
-  * File Name          : IWDG.h
-  * Description        : This file provides code for the configuration
-  *                      of the IWDG instances.
-  ******************************************************************************
-  * @attention
-  *
-  * <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
-  * All rights reserved.</center></h2>
-  *
-  * This software component is licensed by ST under BSD 3-Clause license,
-  * the "License"; You may not use this file except in compliance with the
-  * License. You may obtain a copy of the License at:
-  *                        opensource.org/licenses/BSD-3-Clause
-  *
-  ******************************************************************************
-  */
-/* Define to prevent recursive inclusion -------------------------------------*/
-#ifndef __iwdg_H
-#define __iwdg_H
-#ifdef __cplusplus
- extern "C" {
-#endif
-
-/* Includes ------------------------------------------------------------------*/
-#include "main.h"
-
-/* USER CODE BEGIN Includes */
-
-/* USER CODE END Includes */
-
-extern IWDG_HandleTypeDef hiwdg;
-
-/* USER CODE BEGIN Private defines */
-
-/* USER CODE END Private defines */
-
-void MX_IWDG_Init(void);
-
-/* USER CODE BEGIN Prototypes */
-
-/* USER CODE END Prototypes */
-
-#ifdef __cplusplus
-}
-#endif
-#endif /*__ iwdg_H */
-
-/**
-  * @}
-  */
-
-/**
-  * @}
-  */
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/cube/Core/Inc/stm32f1xx_hal_conf.h b/cube/Core/Inc/stm32f1xx_hal_conf.h
index 5a8f51e..6420cce 100644
--- a/cube/Core/Inc/stm32f1xx_hal_conf.h
+++ b/cube/Core/Inc/stm32f1xx_hal_conf.h
@@ -48,7 +48,7 @@
 /*#define HAL_I2C_MODULE_ENABLED   */
 /*#define HAL_I2S_MODULE_ENABLED   */
 /*#define HAL_IRDA_MODULE_ENABLED   */
-#define HAL_IWDG_MODULE_ENABLED
+/*#define HAL_IWDG_MODULE_ENABLED   */
 /*#define HAL_NOR_MODULE_ENABLED   */
 /*#define HAL_NAND_MODULE_ENABLED   */
 /*#define HAL_PCCARD_MODULE_ENABLED   */
diff --git a/cube/Core/Src/iwdg.c b/cube/Core/Src/iwdg.c
deleted file mode 100644
index 3c49e72..0000000
--- a/cube/Core/Src/iwdg.c
+++ /dev/null
@@ -1,47 +0,0 @@
-/**
-  ******************************************************************************
-  * File Name          : IWDG.c
-  * Description        : This file provides code for the configuration
-  *                      of the IWDG instances.
-  ******************************************************************************
-  * @attention
-  *
-  * <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
-  * All rights reserved.</center></h2>
-  *
-  * This software component is licensed by ST under BSD 3-Clause license,
-  * the "License"; You may not use this file except in compliance with the
-  * License. You may obtain a copy of the License at:
-  *                        opensource.org/licenses/BSD-3-Clause
-  *
-  ******************************************************************************
-  */
-
-/* Includes ------------------------------------------------------------------*/
-#include "iwdg.h"
-
-/* USER CODE BEGIN 0 */
-
-/* USER CODE END 0 */
-
-IWDG_HandleTypeDef hiwdg;
-
-/* IWDG init function */
-void MX_IWDG_Init(void)
-{
-
-  hiwdg.Instance = IWDG;
-  hiwdg.Init.Prescaler = IWDG_PRESCALER_4;
-  hiwdg.Init.Reload = 4095;
-  if (HAL_IWDG_Init(&hiwdg) != HAL_OK)
-  {
-    Error_Handler();
-  }
-
-}
-
-/* USER CODE BEGIN 1 */
-
-/* USER CODE END 1 */
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/cube/Core/Src/main.c b/cube/Core/Src/main.c
index 4fbe8e7..473dd55 100644
--- a/cube/Core/Src/main.c
+++ b/cube/Core/Src/main.c
@@ -20,7 +20,6 @@
 /* USER CODE END Header */
 /* Includes ------------------------------------------------------------------*/
 #include "main.h"
-#include "iwdg.h"
 #include "spi.h"
 #include "tim.h"
 #include "usart.h"
@@ -94,7 +93,6 @@ int main(void)
 
   /* Initialize all configured peripherals */
   MX_GPIO_Init();
-  MX_IWDG_Init();
   MX_SPI1_Init();
   MX_SPI2_Init();
   MX_TIM1_Init();
@@ -130,11 +128,10 @@ void SystemClock_Config(void)
   /** Initializes the RCC Oscillators according to the specified parameters
   * in the RCC_OscInitTypeDef structure.
   */
-  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI|RCC_OSCILLATORTYPE_HSE;
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
   RCC_OscInitStruct.HSEState = RCC_HSE_ON;
   RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
   RCC_OscInitStruct.HSIState = RCC_HSI_ON;
-  RCC_OscInitStruct.LSIState = RCC_LSI_ON;
   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
   RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
diff --git a/cube/Core/Src/main.c-bak b/cube/Core/Src/main.c-bak
index d0e6a70..aa49dab 100644
--- a/cube/Core/Src/main.c-bak
+++ b/cube/Core/Src/main.c-bak
@@ -19,7 +19,6 @@
 /* USER CODE END Header */
 /* Includes ------------------------------------------------------------------*/
 #include "main.h"
-#include "iwdg.h"
 #include "spi.h"
 #include "tim.h"
 #include "usart.h"
@@ -89,7 +88,6 @@ int main(void)
 
   /* Initialize all configured peripherals */
   MX_GPIO_Init();
-  MX_IWDG_Init();
   MX_SPI1_Init();
   MX_SPI2_Init();
   MX_TIM1_Init();
@@ -121,11 +119,10 @@ void SystemClock_Config(void)
   /** Initializes the RCC Oscillators according to the specified parameters
   * in the RCC_OscInitTypeDef structure.
   */
-  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI|RCC_OSCILLATORTYPE_HSE;
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
   RCC_OscInitStruct.HSEState = RCC_HSE_ON;
   RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
   RCC_OscInitStruct.HSIState = RCC_HSI_ON;
-  RCC_OscInitStruct.LSIState = RCC_LSI_ON;
   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
   RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
diff --git a/cube/Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_iwdg.h b/cube/Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_iwdg.h
deleted file mode 100644
index 2cff3d0..0000000
--- a/cube/Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_iwdg.h
+++ /dev/null
@@ -1,226 +0,0 @@
-/**
-  ******************************************************************************
-  * @file    stm32f1xx_hal_iwdg.h
-  * @author  MCD Application Team
-  * @brief   Header file of IWDG HAL module.
-  ******************************************************************************
-  * @attention
-  *
-  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
-  * All rights reserved.</center></h2>
-  *
-  * This software component is licensed by ST under BSD 3-Clause license,
-  * the "License"; You may not use this file except in compliance with the
-  * License. You may obtain a copy of the License at:
-  *                        opensource.org/licenses/BSD-3-Clause
-  *
-  ******************************************************************************
-  */
-
-/* Define to prevent recursive inclusion -------------------------------------*/
-#ifndef STM32F1xx_HAL_IWDG_H
-#define STM32F1xx_HAL_IWDG_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/* Includes ------------------------------------------------------------------*/
-#include "stm32f1xx_hal_def.h"
-
-/** @addtogroup STM32F1xx_HAL_Driver
-  * @{
-  */
-
-/** @defgroup IWDG IWDG
-  * @{
-  */
-
-/* Exported types ------------------------------------------------------------*/
-/** @defgroup IWDG_Exported_Types IWDG Exported Types
-  * @{
-  */
-
-/**
-  * @brief  IWDG Init structure definition
-  */
-typedef struct
-{
-  uint32_t Prescaler;  /*!< Select the prescaler of the IWDG.
-                            This parameter can be a value of @ref IWDG_Prescaler */
-
-  uint32_t Reload;     /*!< Specifies the IWDG down-counter reload value.
-                            This parameter must be a number between Min_Data = 0 and Max_Data = 0x0FFF */
-
-} IWDG_InitTypeDef;
-
-/**
-  * @brief  IWDG Handle Structure definition
-  */
-typedef struct
-{
-  IWDG_TypeDef                 *Instance;  /*!< Register base address    */
-
-  IWDG_InitTypeDef             Init;       /*!< IWDG required parameters */
-} IWDG_HandleTypeDef;
-
-
-/**
-  * @}
-  */
-
-/* Exported constants --------------------------------------------------------*/
-/** @defgroup IWDG_Exported_Constants IWDG Exported Constants
-  * @{
-  */
-
-/** @defgroup IWDG_Prescaler IWDG Prescaler
-  * @{
-  */
-#define IWDG_PRESCALER_4                0x00000000U                                     /*!< IWDG prescaler set to 4   */
-#define IWDG_PRESCALER_8                IWDG_PR_PR_0                                    /*!< IWDG prescaler set to 8   */
-#define IWDG_PRESCALER_16               IWDG_PR_PR_1                                    /*!< IWDG prescaler set to 16  */
-#define IWDG_PRESCALER_32               (IWDG_PR_PR_1 | IWDG_PR_PR_0)                   /*!< IWDG prescaler set to 32  */
-#define IWDG_PRESCALER_64               IWDG_PR_PR_2                                    /*!< IWDG prescaler set to 64  */
-#define IWDG_PRESCALER_128              (IWDG_PR_PR_2 | IWDG_PR_PR_0)                   /*!< IWDG prescaler set to 128 */
-#define IWDG_PRESCALER_256              (IWDG_PR_PR_2 | IWDG_PR_PR_1)                   /*!< IWDG prescaler set to 256 */
-
-/**
-  * @}
-  */
-
-
-
-/**
-  * @}
-  */
-
-/* Exported macros -----------------------------------------------------------*/
-/** @defgroup IWDG_Exported_Macros IWDG Exported Macros
-  * @{
-  */
-
-/**
-  * @brief  Enable the IWDG peripheral.
-  * @param  __HANDLE__  IWDG handle
-  * @retval None
-  */
-#define __HAL_IWDG_START(__HANDLE__)                WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_ENABLE)
-
-/**
-  * @brief  Reload IWDG counter with value defined in the reload register
-  *         (write access to IWDG_PR and IWDG_RLR registers disabled).
-  * @param  __HANDLE__  IWDG handle
-  * @retval None
-  */
-#define __HAL_IWDG_RELOAD_COUNTER(__HANDLE__)       WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_RELOAD)
-
-/**
-  * @}
-  */
-
-/* Exported functions --------------------------------------------------------*/
-/** @defgroup IWDG_Exported_Functions  IWDG Exported Functions
-  * @{
-  */
-
-/** @defgroup IWDG_Exported_Functions_Group1 Initialization and Start functions
-  * @{
-  */
-/* Initialization/Start functions  ********************************************/
-HAL_StatusTypeDef HAL_IWDG_Init(IWDG_HandleTypeDef *hiwdg);
-/**
-  * @}
-  */
-
-/** @defgroup IWDG_Exported_Functions_Group2 IO operation functions
-  * @{
-  */
-/* I/O operation functions ****************************************************/
-HAL_StatusTypeDef HAL_IWDG_Refresh(IWDG_HandleTypeDef *hiwdg);
-/**
-  * @}
-  */
-
-/**
-  * @}
-  */
-
-/* Private constants ---------------------------------------------------------*/
-/** @defgroup IWDG_Private_Constants IWDG Private Constants
-  * @{
-  */
-
-/**
-  * @brief  IWDG Key Register BitMask
-  */
-#define IWDG_KEY_RELOAD                 0x0000AAAAU  /*!< IWDG Reload Counter Enable   */
-#define IWDG_KEY_ENABLE                 0x0000CCCCU  /*!< IWDG Peripheral Enable       */
-#define IWDG_KEY_WRITE_ACCESS_ENABLE    0x00005555U  /*!< IWDG KR Write Access Enable  */
-#define IWDG_KEY_WRITE_ACCESS_DISABLE   0x00000000U  /*!< IWDG KR Write Access Disable */
-
-/**
-  * @}
-  */
-
-/* Private macros ------------------------------------------------------------*/
-/** @defgroup IWDG_Private_Macros IWDG Private Macros
-  * @{
-  */
-
-/**
-  * @brief  Enable write access to IWDG_PR and IWDG_RLR registers.
-  * @param  __HANDLE__  IWDG handle
-  * @retval None
-  */
-#define IWDG_ENABLE_WRITE_ACCESS(__HANDLE__)  WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_WRITE_ACCESS_ENABLE)
-
-/**
-  * @brief  Disable write access to IWDG_PR and IWDG_RLR registers.
-  * @param  __HANDLE__  IWDG handle
-  * @retval None
-  */
-#define IWDG_DISABLE_WRITE_ACCESS(__HANDLE__) WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_WRITE_ACCESS_DISABLE)
-
-/**
-  * @brief  Check IWDG prescaler value.
-  * @param  __PRESCALER__  IWDG prescaler value
-  * @retval None
-  */
-#define IS_IWDG_PRESCALER(__PRESCALER__)      (((__PRESCALER__) == IWDG_PRESCALER_4)  || \
-                                               ((__PRESCALER__) == IWDG_PRESCALER_8)  || \
-                                               ((__PRESCALER__) == IWDG_PRESCALER_16) || \
-                                               ((__PRESCALER__) == IWDG_PRESCALER_32) || \
-                                               ((__PRESCALER__) == IWDG_PRESCALER_64) || \
-                                               ((__PRESCALER__) == IWDG_PRESCALER_128)|| \
-                                               ((__PRESCALER__) == IWDG_PRESCALER_256))
-
-/**
-  * @brief  Check IWDG reload value.
-  * @param  __RELOAD__  IWDG reload value
-  * @retval None
-  */
-#define IS_IWDG_RELOAD(__RELOAD__)            ((__RELOAD__) <= IWDG_RLR_RL)
-
-
-
-/**
-  * @}
-  */
-
-/**
-  * @}
-  */
-
-/**
-  * @}
-  */
-
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* STM32F1xx_HAL_IWDG_H */
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/cube/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_iwdg.c b/cube/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_iwdg.c
deleted file mode 100644
index b39307c..0000000
--- a/cube/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_iwdg.c
+++ /dev/null
@@ -1,258 +0,0 @@
-/**
-  ******************************************************************************
-  * @file    stm32f1xx_hal_iwdg.c
-  * @author  MCD Application Team
-  * @brief   IWDG HAL module driver.
-  *          This file provides firmware functions to manage the following
-  *          functionalities of the Independent Watchdog (IWDG) peripheral:
-  *           + Initialization and Start functions
-  *           + IO operation functions
-  *
-  @verbatim
-  ==============================================================================
-                    ##### IWDG Generic features #####
-  ==============================================================================
-  [..]
-    (+) The IWDG can be started by either software or hardware (configurable
-        through option byte).
-
-    (+) The IWDG is clocked by the Low-Speed Internal clock (LSI) and thus stays
-        active even if the main clock fails.
-
-    (+) Once the IWDG is started, the LSI is forced ON and both cannot be
-        disabled. The counter starts counting down from the reset value (0xFFF).
-        When it reaches the end of count value (0x000) a reset signal is
-        generated (IWDG reset).
-
-    (+) Whenever the key value 0x0000 AAAA is written in the IWDG_KR register,
-        the IWDG_RLR value is reloaded into the counter and the watchdog reset
-        is prevented.
-
-    (+) The IWDG is implemented in the VDD voltage domain that is still functional
-        in STOP and STANDBY mode (IWDG reset can wake up the CPU from STANDBY).
-        IWDGRST flag in RCC_CSR register can be used to inform when an IWDG
-        reset occurs.
-
-    (+) Debug mode: When the microcontroller enters debug mode (core halted),
-        the IWDG counter either continues to work normally or stops, depending
-        on DBG_IWDG_STOP configuration bit in DBG module, accessible through
-        __HAL_DBGMCU_FREEZE_IWDG() and __HAL_DBGMCU_UNFREEZE_IWDG() macros.
-
-    [..] Min-max timeout value @32KHz (LSI): ~125us / ~32.7s
-         The IWDG timeout may vary due to LSI clock frequency dispersion.
-         STM32F1xx devices provide the capability to measure the LSI clock
-         frequency (LSI clock is internally connected to TIM5 CH4 input capture).
-         The measured value can be used to have an IWDG timeout with an
-         acceptable accuracy.
-
-    [..] Default timeout value (necessary for IWDG_SR status register update):
-         Constant LSI_VALUE is defined based on the nominal LSI clock frequency.
-         This frequency being subject to variations as mentioned above, the
-         default timeout value (defined through constant HAL_IWDG_DEFAULT_TIMEOUT
-         below) may become too short or too long.
-         In such cases, this default timeout value can be tuned by redefining
-         the constant LSI_VALUE at user-application level (based, for instance,
-         on the measured LSI clock frequency as explained above).
-
-                     ##### How to use this driver #####
-  ==============================================================================
-  [..]
-    (#) Use IWDG using HAL_IWDG_Init() function to :
-      (++) Enable instance by writing Start keyword in IWDG_KEY register. LSI
-           clock is forced ON and IWDG counter starts counting down.
-      (++) Enable write access to configuration registers:
-          IWDG_PR and IWDG_RLR.
-      (++) Configure the IWDG prescaler and counter reload value. This reload
-           value will be loaded in the IWDG counter each time the watchdog is
-           reloaded, then the IWDG will start counting down from this value.
-      (++) Wait for status flags to be reset.
-
-    (#) Then the application program must refresh the IWDG counter at regular
-        intervals during normal operation to prevent an MCU reset, using
-        HAL_IWDG_Refresh() function.
-
-     *** IWDG HAL driver macros list ***
-     ====================================
-     [..]
-       Below the list of most used macros in IWDG HAL driver:
-      (+) __HAL_IWDG_START: Enable the IWDG peripheral
-      (+) __HAL_IWDG_RELOAD_COUNTER: Reloads IWDG counter with value defined in
-          the reload register
-
-  @endverbatim
-  ******************************************************************************
-  * @attention
-  *
-  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
-  * All rights reserved.</center></h2>
-  *
-  * This software component is licensed by ST under BSD 3-Clause license,
-  * the "License"; You may not use this file except in compliance with the
-  * License. You may obtain a copy of the License at:
-  *                        opensource.org/licenses/BSD-3-Clause
-  *
-  ******************************************************************************
-  */
-
-/* Includes ------------------------------------------------------------------*/
-#include "stm32f1xx_hal.h"
-
-/** @addtogroup STM32F1xx_HAL_Driver
-  * @{
-  */
-
-#ifdef HAL_IWDG_MODULE_ENABLED
-/** @addtogroup IWDG
-  * @brief IWDG HAL module driver.
-  * @{
-  */
-
-/* Private typedef -----------------------------------------------------------*/
-/* Private define ------------------------------------------------------------*/
-/** @defgroup IWDG_Private_Defines IWDG Private Defines
-  * @{
-  */
-/* Status register needs up to 5 LSI clock periods divided by the clock
-   prescaler to be updated. The number of LSI clock periods is upper-rounded to
-   6 for the timeout value calculation.
-   The timeout value is also calculated using the highest prescaler (256) and
-   the LSI_VALUE constant. The value of this constant can be changed by the user
-   to take into account possible LSI clock period variations.
-   The timeout value is multiplied by 1000 to be converted in milliseconds. */
-#define HAL_IWDG_DEFAULT_TIMEOUT ((6UL * 256UL * 1000UL) / LSI_VALUE)
-/**
-  * @}
-  */
-
-/* Private macro -------------------------------------------------------------*/
-/* Private variables ---------------------------------------------------------*/
-/* Private function prototypes -----------------------------------------------*/
-/* Exported functions --------------------------------------------------------*/
-
-/** @addtogroup IWDG_Exported_Functions
-  * @{
-  */
-
-/** @addtogroup IWDG_Exported_Functions_Group1
-  *  @brief    Initialization and Start functions.
-  *
-@verbatim
- ===============================================================================
-          ##### Initialization and Start functions #####
- ===============================================================================
- [..]  This section provides functions allowing to:
-      (+) Initialize the IWDG according to the specified parameters in the
-          IWDG_InitTypeDef of associated handle.
-      (+) Once initialization is performed in HAL_IWDG_Init function, Watchdog
-          is reloaded in order to exit function with correct time base.
-
-@endverbatim
-  * @{
-  */
-
-/**
-  * @brief  Initialize the IWDG according to the specified parameters in the
-  *         IWDG_InitTypeDef and start watchdog. Before exiting function,
-  *         watchdog is refreshed in order to have correct time base.
-  * @param  hiwdg  pointer to a IWDG_HandleTypeDef structure that contains
-  *                the configuration information for the specified IWDG module.
-  * @retval HAL status
-  */
-HAL_StatusTypeDef HAL_IWDG_Init(IWDG_HandleTypeDef *hiwdg)
-{
-  uint32_t tickstart;
-
-  /* Check the IWDG handle allocation */
-  if (hiwdg == NULL)
-  {
-    return HAL_ERROR;
-  }
-
-  /* Check the parameters */
-  assert_param(IS_IWDG_ALL_INSTANCE(hiwdg->Instance));
-  assert_param(IS_IWDG_PRESCALER(hiwdg->Init.Prescaler));
-  assert_param(IS_IWDG_RELOAD(hiwdg->Init.Reload));
-
-  /* Enable IWDG. LSI is turned on automatically */
-  __HAL_IWDG_START(hiwdg);
-
-  /* Enable write access to IWDG_PR and IWDG_RLR registers by writing
-  0x5555 in KR */
-  IWDG_ENABLE_WRITE_ACCESS(hiwdg);
-
-  /* Write to IWDG registers the Prescaler & Reload values to work with */
-  hiwdg->Instance->PR = hiwdg->Init.Prescaler;
-  hiwdg->Instance->RLR = hiwdg->Init.Reload;
-
-  /* Check pending flag, if previous update not done, return timeout */
-  tickstart = HAL_GetTick();
-
-  /* Wait for register to be updated */
-  while (hiwdg->Instance->SR != 0x00u)
-  {
-    if ((HAL_GetTick() - tickstart) > HAL_IWDG_DEFAULT_TIMEOUT)
-    {
-      return HAL_TIMEOUT;
-    }
-  }
-
-  /* Reload IWDG counter with value defined in the reload register */
-  __HAL_IWDG_RELOAD_COUNTER(hiwdg);
-
-  /* Return function status */
-  return HAL_OK;
-}
-
-/**
-  * @}
-  */
-
-
-/** @addtogroup IWDG_Exported_Functions_Group2
-  *  @brief   IO operation functions
-  *
-@verbatim
- ===============================================================================
-                      ##### IO operation functions #####
- ===============================================================================
- [..]  This section provides functions allowing to:
-      (+) Refresh the IWDG.
-
-@endverbatim
-  * @{
-  */
-
-
-/**
-  * @brief  Refresh the IWDG.
-  * @param  hiwdg  pointer to a IWDG_HandleTypeDef structure that contains
-  *                the configuration information for the specified IWDG module.
-  * @retval HAL status
-  */
-HAL_StatusTypeDef HAL_IWDG_Refresh(IWDG_HandleTypeDef *hiwdg)
-{
-  /* Reload IWDG counter with value defined in the reload register */
-  __HAL_IWDG_RELOAD_COUNTER(hiwdg);
-
-  /* Return function status */
-  return HAL_OK;
-}
-
-/**
-  * @}
-  */
-
-/**
-  * @}
-  */
-
-#endif /* HAL_IWDG_MODULE_ENABLED */
-/**
-  * @}
-  */
-
-/**
-  * @}
-  */
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/cube/Makefile b/cube/Makefile
index bf58c91..fb58f24 100644
--- a/cube/Makefile
+++ b/cube/Makefile
@@ -1,6 +1,6 @@
-# Processed by ../tools/insertMyCode.sh
+# Processed by ../tools/insertMyCode.sh
 ##########################################################################################################################
-# File automatically-generated by tool: [projectgenerator] version: [3.10.0-B14] date: [Sat Jan 30 17:49:10 CET 2021]
+# File automatically-generated by tool: [projectgenerator] version: [3.10.0-B14] date: [Sun Jan 31 20:49:49 CET 2021]
 ##########################################################################################################################
 
 # ------------------------------------------------
@@ -36,36 +36,34 @@ BUILD_DIR = build
 # source
 ######################################
 # C sources
-C_SOURCES =  \
-User/Src/adminCmds.c User/Src/cmdHandler.c User/Src/config.c User/Src/configCmds.c User/Src/eeprom.c User/Src/logger.c User/Src/main2.c User/Src/ports.c User/Src/regularCmds.c User/Src/ringbuffer.c User/Src/show.c User/Src/utils.c User/Src/wizHelper.c hottislib/PontCoopScheduler.c  \
-Core/Src/main.c \
-Core/Src/gpio.c \
-Core/Src/iwdg.c \
-Core/Src/spi.c \
-Core/Src/tim.c \
-Core/Src/usart.c \
-Core/Src/stm32f1xx_it.c \
-Core/Src/stm32f1xx_hal_msp.c \
-Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio_ex.c \
-Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_iwdg.c \
-Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal.c \
-Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc.c \
-Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc_ex.c \
-Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.c \
-Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_dma.c \
-Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_cortex.c \
-Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pwr.c \
-Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash.c \
-Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash_ex.c \
-Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_exti.c \
-Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_spi.c \
-Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim.c \
-Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim_ex.c \
-Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_uart.c \
+C_SOURCES =  \
+User/Src/adminCmds.c User/Src/cmdHandler.c User/Src/config.c User/Src/configCmds.c User/Src/eeprom.c User/Src/logger.c User/Src/main2.c User/Src/ports.c User/Src/regularCmds.c User/Src/ringbuffer.c User/Src/show.c User/Src/utils.c User/Src/wizHelper.c hottislib/PontCoopScheduler.c  \
+Core/Src/main.c \
+Core/Src/gpio.c \
+Core/Src/spi.c \
+Core/Src/tim.c \
+Core/Src/usart.c \
+Core/Src/stm32f1xx_it.c \
+Core/Src/stm32f1xx_hal_msp.c \
+Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio_ex.c \
+Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_spi.c \
+Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal.c \
+Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc.c \
+Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc_ex.c \
+Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio.c \
+Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_dma.c \
+Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_cortex.c \
+Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pwr.c \
+Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash.c \
+Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash_ex.c \
+Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_exti.c \
+Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim.c \
+Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim_ex.c \
+Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_uart.c \
 Core/Src/system_stm32f1xx.c  
 
 # ASM sources
-ASM_SOURCES =  \
+ASM_SOURCES =  \
 startup_stm32f103xb.s
 
 
@@ -109,8 +107,8 @@ MCU = $(CPU) -mthumb $(FPU) $(FLOAT-ABI)
 AS_DEFS = 
 
 # C defines
-C_DEFS =  \
--DUSE_HAL_DRIVER \
+C_DEFS =  \
+-DUSE_HAL_DRIVER \
 -DSTM32F103xB
 
 
@@ -118,17 +116,17 @@ C_DEFS =  \
 AS_INCLUDES = 
 
 # C includes
-C_INCLUDES =  \
--Ihottislib \
--IUser/Inc \
--IioLibrary_Driver/Internet/DNS \
--IioLibrary_Driver/Internet/DHCP \
--IioLibrary_Driver/Ethernet \
--ICore/Inc \
--IDrivers/STM32F1xx_HAL_Driver/Inc \
--IDrivers/STM32F1xx_HAL_Driver/Inc/Legacy \
--IDrivers/CMSIS/Device/ST/STM32F1xx/Include \
--IDrivers/CMSIS/Include \
+C_INCLUDES =  \
+-Ihottislib \
+-IUser/Inc \
+-IioLibrary_Driver/Internet/DNS \
+-IioLibrary_Driver/Internet/DHCP \
+-IioLibrary_Driver/Ethernet \
+-ICore/Inc \
+-IDrivers/STM32F1xx_HAL_Driver/Inc \
+-IDrivers/STM32F1xx_HAL_Driver/Inc/Legacy \
+-IDrivers/CMSIS/Device/ST/STM32F1xx/Include \
+-IDrivers/CMSIS/Include \
 -IDrivers/CMSIS/Include
 
 
@@ -167,14 +165,14 @@ all: $(BUILD_DIR)/$(TARGET).elf $(BUILD_DIR)/$(TARGET).hex $(BUILD_DIR)/$(TARGET
 # list of objects
 OBJECTS = $(addprefix $(BUILD_DIR)/,$(notdir $(C_SOURCES:.c=.o)))
 vpath %.c $(sort $(dir $(C_SOURCES)))
-OBJECTS += $(addprefix $(BUILD_DIR)/,w5500.a)
+OBJECTS += $(addprefix $(BUILD_DIR)/,w5500.a)
 # list of ASM program objects
 OBJECTS += $(addprefix $(BUILD_DIR)/,$(notdir $(ASM_SOURCES:.s=.o)))
 vpath %.s $(sort $(dir $(ASM_SOURCES)))
 
-$(BUILD_DIR)/w5500.a:
-	(cd ioLibrary_Driver && $(MAKE) && cp w5500.a ../$(BUILD_DIR) && cd ..)
-
+$(BUILD_DIR)/w5500.a:
+	(cd ioLibrary_Driver && $(MAKE) && cp w5500.a ../$(BUILD_DIR) && cd ..)
+
 $(BUILD_DIR)/%.o: %.c Makefile | $(BUILD_DIR) 
 	$(CC) -c $(CFLAGS) -Wa,-a,-ad,-alms=$(BUILD_DIR)/$(notdir $(<:.c=.lst)) $< -o $@
 
diff --git a/cube/Makefile-bak b/cube/Makefile-bak
index 2380869..46b4055 100644
--- a/cube/Makefile-bak
+++ b/cube/Makefile-bak
@@ -1,5 +1,5 @@
 ##########################################################################################################################
-# File automatically-generated by tool: [projectgenerator] version: [3.10.0-B14] date: [Sat Jan 30 17:49:10 CET 2021]
+# File automatically-generated by tool: [projectgenerator] version: [3.10.0-B14] date: [Sun Jan 31 20:49:49 CET 2021]
 ##########################################################################################################################
 
 # ------------------------------------------------
@@ -38,14 +38,13 @@ BUILD_DIR = build
 C_SOURCES =  \
 Core/Src/main.c \
 Core/Src/gpio.c \
-Core/Src/iwdg.c \
 Core/Src/spi.c \
 Core/Src/tim.c \
 Core/Src/usart.c \
 Core/Src/stm32f1xx_it.c \
 Core/Src/stm32f1xx_hal_msp.c \
 Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_gpio_ex.c \
-Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_iwdg.c \
+Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_spi.c \
 Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal.c \
 Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc.c \
 Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc_ex.c \
@@ -56,7 +55,6 @@ Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_pwr.c \
 Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash.c \
 Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash_ex.c \
 Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_exti.c \
-Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_spi.c \
 Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim.c \
 Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_tim_ex.c \
 Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_uart.c \
diff --git a/cube/cube.ioc b/cube/cube.ioc
index f5c5fcd..06e57d7 100644
--- a/cube/cube.ioc
+++ b/cube/cube.ioc
@@ -3,15 +3,14 @@ File.Version=6
 GPIO.groupedBy=
 KeepUserPlacement=false
 Mcu.Family=STM32F1
-Mcu.IP0=IWDG
-Mcu.IP1=NVIC
-Mcu.IP2=RCC
-Mcu.IP3=SPI1
-Mcu.IP4=SPI2
-Mcu.IP5=SYS
-Mcu.IP6=TIM1
-Mcu.IP7=USART1
-Mcu.IPNb=8
+Mcu.IP0=NVIC
+Mcu.IP1=RCC
+Mcu.IP2=SPI1
+Mcu.IP3=SPI2
+Mcu.IP4=SYS
+Mcu.IP5=TIM1
+Mcu.IP6=USART1
+Mcu.IPNb=7
 Mcu.Name=STM32F103C(8-B)Tx
 Mcu.Package=LQFP48
 Mcu.Pin0=PC13-TAMPER-RTC
@@ -27,9 +26,8 @@ Mcu.Pin17=PA14
 Mcu.Pin18=PB5
 Mcu.Pin19=PB6
 Mcu.Pin2=PD0-OSC_IN
-Mcu.Pin20=VP_IWDG_VS_IWDG
-Mcu.Pin21=VP_SYS_VS_Systick
-Mcu.Pin22=VP_TIM1_VS_ClockSourceINT
+Mcu.Pin20=VP_SYS_VS_Systick
+Mcu.Pin21=VP_TIM1_VS_ClockSourceINT
 Mcu.Pin3=PD1-OSC_OUT
 Mcu.Pin4=PA4
 Mcu.Pin5=PA5
@@ -37,7 +35,7 @@ Mcu.Pin6=PA6
 Mcu.Pin7=PA7
 Mcu.Pin8=PB11
 Mcu.Pin9=PB12
-Mcu.PinsNb=23
+Mcu.PinsNb=22
 Mcu.ThirdPartyNb=0
 Mcu.UserConstants=eepromSpi,hspi1;etherSpi,hspi2;debugUart,huart1
 Mcu.UserName=STM32F103C8Tx
@@ -153,7 +151,7 @@ ProjectManager.StackSize=0x400
 ProjectManager.TargetToolchain=Makefile
 ProjectManager.ToolChainLocation=
 ProjectManager.UnderRoot=false
-ProjectManager.functionlistsort=1-MX_GPIO_Init-GPIO-false-HAL-true,2-SystemClock_Config-RCC-false-HAL-false,3-MX_IWDG_Init-IWDG-false-HAL-true,4-MX_SPI1_Init-SPI1-false-HAL-true,5-MX_SPI2_Init-SPI2-false-HAL-true,6-MX_TIM1_Init-TIM1-false-HAL-true,7-MX_USART1_UART_Init-USART1-false-HAL-true
+ProjectManager.functionlistsort=1-MX_GPIO_Init-GPIO-false-HAL-true,2-SystemClock_Config-RCC-false-HAL-false,3-MX_IWDG_Init-IWDG-false-HAL-true,3-MX_SPI1_Init-SPI1-false-HAL-true,4-MX_SPI2_Init-SPI2-false-HAL-true,5-MX_TIM1_Init-TIM1-false-HAL-true,6-MX_USART1_UART_Init-USART1-false-HAL-true
 RCC.ADCFreqValue=36000000
 RCC.AHBFreq_Value=72000000
 RCC.APB1CLKDivider=RCC_HCLK_DIV2
@@ -192,8 +190,6 @@ TIM1.Channel-Input_Capture1_from_TI1=TIM_CHANNEL_1
 TIM1.IPParameters=Channel-Input_Capture1_from_TI1
 USART1.IPParameters=VirtualMode
 USART1.VirtualMode=VM_ASYNC
-VP_IWDG_VS_IWDG.Mode=IWDG_Activate
-VP_IWDG_VS_IWDG.Signal=IWDG_VS_IWDG
 VP_SYS_VS_Systick.Mode=SysTick
 VP_SYS_VS_Systick.Signal=SYS_VS_Systick
 VP_TIM1_VS_ClockSourceINT.Mode=Internal
diff --git a/tools/insertMyCode.sh b/tools/insertMyCode.sh
index 3c4d163..03db6b3 100755
--- a/tools/insertMyCode.sh
+++ b/tools/insertMyCode.sh
@@ -67,7 +67,7 @@ echo "# $PROCESSED" > $MAKEFILE
 cat $MAKEFILE_BAK | \
   sed -e 's/\(-specs=nano.specs\)/\1 -u _printf_float/' \
       -e 's/\(-Wall\)/\1 -Werror/' \
-      -e 's%\(# list of ASM program objects\)%OBJECTS += $(addprefix $(BUILD_DIR)/,w5500.a pubsubc.a)\n\1%' \
+      -e 's%\(# list of ASM program objects\)%OBJECTS += $(addprefix $(BUILD_DIR)/,w5500.a)\n\1%' \
       -e 's,\($(BUILD_DIR)/%.o: %.c Makefile | $(BUILD_DIR)\),$(BUILD_DIR)/w5500.a:\n\t(cd ioLibrary_Driver \&\& $(MAKE) \&\& cp w5500.a ../$(BUILD_DIR) \&\& cd ..)\n\n\1,' \
       -e 's,\(C_SOURCES =  \\\),\1\n'"$SRC_EXT"' \\,' \
       -e 's,\(C_INCLUDES =  \\\),\1\n-IioLibrary_Driver/Ethernet \\,' \