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mainmenu "AVR-IOE configuration"

config IOEROOT
    string
    option env="IOEROOT"
source "$IOEROOT/include/mcu/Kconfig"

config F_CPU
    int "CPU frequency in kHz (F_CPU)"
    default 16000

# Toolchain #####################################################################

menu "Compilation options"

config GNUTOOLCHAIN_PREFIX
    string "GNU Toolchain prefix"
    default "avr-"

config CONFCFLAGS
    string "Compilation CFlags"
    default "-Os -ffunction-sections -fdata-sections -fshort-enums -Wall"

endmenu

# IO Ports ######################################################################

config MCUSUPPORT_IOPORTS
    bool
    default n

config CONFIG_IOPORTS
    bool "Input/Output ports"
    default y
    depends on MCUSUPPORT_IOPORTS

config MCUSUPPORT_PCINT0
    bool
    default n
config MCUSUPPORT_PCINT1
    bool
    default n
config MCUSUPPORT_PCINT2
    bool
    default n

config CONFIG_IOPORTS_PCINT
    bool "Input/Output ports change interrupts"
	depends on CONFIG_IOPORTS
    depends on MCUSUPPORT_PCINT0 || MCUSUPPORT_PCINT1 || MCUSUPPORT_PCINT2

# SPI ###########################################################################

config MCUSUPPORT_SPI
    bool
    default n

config CONFIG_SPI
	bool "Serial peripheral interface"
    depends on MCUSUPPORT_SPI

# USART #########################################################################
config MCUSUPPORT_USART
    bool
    default n

menuconfig CONFIG_USART
	bool "Universal synchronous/asynchronous transceiver"
    depends on MCUSUPPORT_USART

if CONFIG_USART

config CONFIG_USART_BAUD
	int "Baudrate"
	default 115200

choice USART_PARITY_C
	prompt "Parity"
config USART_PARITY_C_NONE
	bool "None"
config USART_PARITY_C_ODD
	bool "Odd"
config USART_PARITY_C_EVEN
	bool "Even"
endchoice
config CONFIG_USART_PARITY
	string
	default "USART_PARITY_NONE" if USART_PARITY_C_NONE
	default "USART_PARITY_ODD" if USART_PARITY_C_ODD
	default "USART_PARITY_EVEN" if USART_PARITY_C_EVEN

config CONFIG_USART_DATABITS
	int "Data bits"
	default 8

choice USART_STOPBIT_C
	prompt "Stop bit"
config USART_STOPBIT_C_SINGLE
	bool "Single"
config USART_STOPBIT_C_DOUBLE
	bool "Double"
endchoice
config CONFIG_USART_STOPBIT
	string
	default "USART_STOPBIT_SINGLE" if USART_STOPBIT_C_SINGLE
	default "USART_STOPBIT_DOUBLE" if USART_STOPBIT_C_DOUBLE

config CONFIG_USART_OUTPUT_BUFFER
	bool "Use output buffer"
	default n

config CONFIG_USART_OUTBUFFER_SIZE
	int "Output buffer size in bytes." if CONFIG_USART_OUTPUT_BUFFER
	default 0 if CONFIG_USART_OUTPUT_BUFFER
	default 32

choice USART_OUTBUFFER_MODE_C
	prompt "Output buffer replacement policy" if CONFIG_USART_OUTPUT_BUFFER
config USART_OUTBUFFER_MODE_C_BLOCK
	bool "Block"
config USART_OUTBUFFER_MODE_C_OVERWRITE
	bool "Overwrite"
config USART_OUTBUFFER_MODE_C_DROP
	bool "Drop"
endchoice
config CONFIG_USART_OUTBUFFER_MODE
	int
	default 1 if USART_OUTBUFFER_MODE_C_OVERWRITE
	default 2 if USART_OUTBUFFER_MODE_C_DROP
	default 0

config CONFIG_USART_INPUT_BUFFER
	bool "Use input buffer"

config CONFIG_USART_INBUFFER_SIZE
	int "Input buffer size in bytes." if CONFIG_USART_INPUT_BUFFER
	default 0 if CONFIG_USART_INPUT_BUFFER
	default 32

choice USART_INBUFFER_MODE_C
	prompt "Input buffer replacement policy" if CONFIG_USART_INPUT_BUFFER
config USART_INBUFFER_MODE_C_BLOCK
	bool "Block"
config USART_INBUFFER_MODE_C_OVERWRITE
	bool "Overwrite"
config USART_INBUFFER_MODE_C_DROP
	bool "Drop"
endchoice
config CONFIG_USART_INBUFFER_MODE
	int
	default 1 if USART_INBUFFER_MODE_C_OVERWRITE
	default 2 if USART_INBUFFER_MODE_C_DROP
	default 0

endif