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Intro

For duplication, we look at places in code where there are 6 or more lines of code that are exactly the same.
Before duplication is calculated, the code is cleaned to remove empty lines, comments, and frequently duplicated constructs such as imports.
You should aim at having as little as possible (<5%) of duplicated code as high-level of duplication can lead to maintenance difficulties, poor factoring, and logical contradictions.

Learn more...

Duplication Overall

19% duplication:

43,795 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
8,739 duplicated lines

1,227 duplicates

Duplication per Extension

Duplication per Component (primary)

Duplication Between Components (50+ lines)

Download: SVG DOT (open online Graphviz editor)

From Component --> To Component	Duplicated Lines	File Pairs	Details
boards/Nordic_NRF52 (57%) --> boards/STM32L475_Discovery (36%)	382	1 file pair	details...
boards/Nordic_NRF52/common_io (7%) --> boards/STM32L475_Discovery/common_io (5%)	128	2 file pairs	details...

Open 3D force graph...

Show more details on duplication between components...

Longest Duplicates

The list of 20 longest duplicates.

See data for all 1,227 duplicates...

Size	#	Folders	Files	Lines	Code
199	x 2	boards/STM32L475_Discovery/CMSIS/Include boards/STM32L475_Discovery/CMSIS/Include	core_cm3.h core_sc300.h	651:1748 (70%) 645:1730 (69%)	view
191	x 2	boards/Nordic_NRF52 boards/STM32L475_Discovery	rtc-board.c rtc-board.c	90:701 (100%) 90:701 (100%)	view
105	x 2	boards/STM32L475_Discovery/CMSIS/Include boards/STM32L475_Discovery/CMSIS/Include	core_cm3.h core_cm4.h	653:1235 (36%) 709:1297 (35%)	view
105	x 2	boards/STM32L475_Discovery/CMSIS/Include boards/STM32L475_Discovery/CMSIS/Include	core_cm4.h core_sc300.h	709:1297 (35%) 646:1217 (36%)	view
94	x 2	boards/STM32L475_Discovery/CMSIS/Include boards/STM32L475_Discovery/CMSIS/Include	core_cm4.h core_sc300.h	1404:1922 (31%) 1217:1730 (32%)	view
94	x 2	boards/STM32L475_Discovery/CMSIS/Include boards/STM32L475_Discovery/CMSIS/Include	core_cm3.h core_cm4.h	1235:1748 (33%) 1404:1922 (31%)	view
93	x 2	boards/STM32L475_Discove...TM32L4xx_HAL_Driver/Inc boards/STM32L475_Discove...TM32L4xx_HAL_Driver/Inc	stm32l4xx_hal_uart_ex.h stm32l4xx_hal_uart_ex.h	356:450 (20%) 511:605 (20%)	view
85	x 2	boards/STM32L475_Discove...TM32L4xx_HAL_Driver/Inc boards/STM32L475_Discove...TM32L4xx_HAL_Driver/Inc	stm32l4xx_hal_irda_ex.h stm32l4xx_hal_irda_ex.h	75:159 (27%) 297:381 (27%)	view
85	x 2	boards/STM32L475_Discove...TM32L4xx_HAL_Driver/Inc boards/STM32L475_Discove...TM32L4xx_HAL_Driver/Inc	stm32l4xx_hal_uart_ex.h stm32l4xx_hal_uart_ex.h	257:341 (18%) 542:626 (18%)	view
78	x 2	boards/STM32L475_Discovery/CMSIS/Include boards/STM32L475_Discovery/CMSIS/Include	core_cm3.h core_sc300.h	178:439 (27%) 178:439 (27%)	view
72	x 2	boards/STM32L475_Discove...TM32L4xx_HAL_Driver/Inc boards/STM32L475_Discove...TM32L4xx_HAL_Driver/Inc	stm32l4xx_hal_irda_ex.h stm32l4xx_hal_irda_ex.h	174:247 (23%) 287:360 (23%)	view
72	x 2	boards/STM32L475_Discove...TM32L4xx_HAL_Driver/Inc boards/STM32L475_Discove...TM32L4xx_HAL_Driver/Inc	stm32l4xx_hal_uart_ex.h stm32l4xx_hal_uart_ex.h	444:517 (15%) 511:584 (15%)	view
72	x 2	boards/STM32L475_Discove...TM32L4xx_HAL_Driver/Inc boards/STM32L475_Discove...TM32L4xx_HAL_Driver/Inc	stm32l4xx_hal_uart_ex.h stm32l4xx_hal_uart_ex.h	356:429 (15%) 444:517 (15%)	view
69	x 2	boards/STM32L475_Discovery/CMSIS/Include boards/STM32L475_Discovery/CMSIS/Include	core_cm4.h core_cm7.h	508:923 (23%) 552:1125 (14%)	view
68	x 2	boards/STM32L475_Discovery/CMSIS/Include boards/STM32L475_Discovery/CMSIS/Include	core_cm4.h core_cm7.h	226:492 (22%) 226:507 (14%)	view
64	x 2	boards/STM32L475_Discove...TM32L4xx_HAL_Driver/Inc boards/STM32L475_Discove...TM32L4xx_HAL_Driver/Inc	stm32l4xx_hal_irda_ex.h stm32l4xx_hal_irda_ex.h	75:138 (20%) 184:247 (20%)	view
64	x 2	boards/STM32L475_Discovery/CMSIS/Include boards/STM32L475_Discovery/CMSIS/Include	core_cm3.h core_cm7.h	653:862 (22%) 911:1125 (13%)	view
64	x 2	boards/STM32L475_Discove...TM32L4xx_HAL_Driver/Inc boards/STM32L475_Discove...TM32L4xx_HAL_Driver/Inc	stm32l4xx_hal_uart_ex.h stm32l4xx_hal_uart_ex.h	257:320 (13%) 387:450 (13%)	view
64	x 2	boards/STM32L475_Discovery/CMSIS/Include boards/STM32L475_Discovery/CMSIS/Include	core_cm7.h core_sc300.h	911:1125 (13%) 646:844 (22%)	view
57	x 2	boards/STM32L475_Discovery/STM32L4xx_HAL_Driver boards/STM32L475_Discovery/STM32L4xx_HAL_Driver	stm32l4xx_hal_rtc.c stm32l4xx_hal_rtc.c	765:860 (11%) 949:1041 (11%)	view

Duplicated Units

The list of top 20 duplicated units.

See data for all 44 unit duplicates...

Size	#	Folders	Files	Lines	Code
80	x 2	boards/STM32L475_Discovery/STM32L4xx_HAL_Driver boards/STM32L475_Discovery/STM32L4xx_HAL_Driver	stm32l4xx_hal_tim.c stm32l4xx_hal_tim.c	914:1036 1477:1598	view
79	x 2	boards/STM32L475_Discovery boards/Nordic_NRF52	rtc-board.c rtc-board.c	373:474 373:474	view
66	x 2	boards/STM32L475_Discovery/STM32L4xx_HAL_Driver boards/STM32L475_Discovery/STM32L4xx_HAL_Driver	stm32l4xx_hal_tim_ex.c stm32l4xx_hal_tim_ex.c	705:804 1098:1196	view
38	x 2	boards/STM32L475_Discovery/STM32L4xx_HAL_Driver boards/STM32L475_Discovery/STM32L4xx_HAL_Driver	stm32l4xx_hal_tim.c stm32l4xx_hal_tim.c	777:833 1340:1396	view
36	x 2	boards/STM32L475_Discovery/STM32L4xx_HAL_Driver boards/STM32L475_Discovery/STM32L4xx_HAL_Driver	stm32l4xx_hal_tim.c stm32l4xx_hal_tim.c	1049:1105 1611:1667	view
35	x 2	boards/STM32L475_Discovery/STM32L4xx_HAL_Driver boards/STM32L475_Discovery/STM32L4xx_HAL_Driver	stm32l4xx_hal_tim.c stm32l4xx_hal_tim.c	846:899 1409:1462	view
33	x 2	boards/STM32L475_Discovery/STM32L4xx_HAL_Driver boards/STM32L475_Discovery/STM32L4xx_HAL_Driver	stm32l4xx_hal_tim_ex.c stm32l4xx_hal_tim_ex.c	639:690 1031:1083	view
31	x 2	boards/STM32L475_Discovery/STM32L4xx_HAL_Driver boards/STM32L475_Discovery/STM32L4xx_HAL_Driver	stm32l4xx_hal_tim_ex.c stm32l4xx_hal_tim_ex.c	576:626 969:1018	view
28	x 2	boards/STM32L475_Discovery/STM32L4xx_HAL_Driver boards/STM32L475_Discovery/STM32L4xx_HAL_Driver	stm32l4xx_hal_tim_ex.c stm32l4xx_hal_tim_ex.c	817:863 1209:1255	view
26	x 2	boards/STM32L475_Discovery boards/Nordic_NRF52	rtc-board.c rtc-board.c	669:702 669:702	view
22	x 2	boards/STM32L475_Discovery boards/Nordic_NRF52	rtc-board.c rtc-board.c	535:569 535:569	view
20	x 2	boards/STM32L475_Discovery boards/Nordic_NRF52	rtc-board.c rtc-board.c	500:528 500:528	view
14	x 2	boards/STM32L475_Discovery/common_io boards/STM32L475_Discovery/common_io	iot_spi.c iot_spi.c	627:641 644:658	view
13	x 2	boards/STM32L475_Discovery/STM32L4xx_HAL_Driver boards/STM32L475_Discovery/STM32L4xx_HAL_Driver	stm32l4xx_hal_tim.c stm32l4xx_hal_tim.c	708:730 1268:1290	view
13	x 2	boards/STM32L475_Discovery boards/Nordic_NRF52	rtc-board.c rtc-board.c	603:625 603:625	view
13	x 7	boards/STM32L475_Discovery/CMSIS/Include boards/STM32L475_Discovery/CMSIS/Include boards/STM32L475_Discovery/CMSIS/Include boards/STM32L475_Discovery/CMSIS/Include boards/STM32L475_Discovery/CMSIS/Include boards/STM32L475_Discovery/CMSIS/Include boards/STM32L475_Discovery/CMSIS/Include	core_sc300.h core_cm0plus.h core_cm3.h core_cm4.h core_sc000.h core_cm7.h core_cm0.h	1638:1652 885:899 1656:1670 1830:1844 897:911 2405:2419 769:783	view
12	x 4	boards/STM32L475_Discovery/CMSIS/Include boards/STM32L475_Discovery/CMSIS/Include boards/STM32L475_Discovery/CMSIS/Include boards/STM32L475_Discovery/CMSIS/Include	core_sc300.h core_cm3.h core_cm4.h core_cm7.h	1680:1692 1698:1710 1872:1884 2447:2459	view
12	x 3	boards/STM32L475_Discovery/CMSIS/Include boards/STM32L475_Discovery/CMSIS/Include boards/STM32L475_Discovery/CMSIS/Include	core_cm0plus.h core_sc000.h core_cm0.h	804:816 816:828 688:700	view
11	x 2	boards/STM32L475_Discovery boards/Nordic_NRF52	rtc-board.c rtc-board.c	152:215 152:215	view
11	x 2	boards/STM32L475_Discovery boards/Nordic_NRF52	rtc-board.c rtc-board.c	223:242 223:242	view