CoolBox | touchgfx project with ADC , LWIP and Modbus tcp
kandi X-RAY | CoolBox Summary
kandi X-RAY | CoolBox Summary
STM32F7 project (compatible with stm32F746g-disco board) with touchgfx and Freertos. Peripheral enabled ==> IWDG, ADC, LWIP and Modbus tcp/ip. Collect and convert analog voltages (ADC1), store the result in modbus input register (30001 & 30002). To test this project, you can can read the data using "ModBus tool" like modbus poll through ethernet (TCP/IP). For testing you can modifiy the ip adress directly in lwip/app/lwip.c file. Displays the conversion result on touchscreen thanks to touchgfx. Software compatibility: STM32CubeIDE ==> V1.2.1 STM32CubeMX ==> V5.6 TouchGFX ==> V4.13. To customize or modify the program open .cproject in STM32CubeIDE workspace. In linker setting don't forget to add gcc library path if different, by default gcc library path is: "C:/TouchGFXProjects/CoolBox_CubeIDE_V1.1/Middlewares/ST/touchgfx/lib/core/cortex_m7/gcc".
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QUESTION
My question is about the difference of the elapsed time according to the point.
For finding the largest portion of the total elapsed time when executing in my code, I used clock
function.
source : calculating time elapsed in C++
First, I put the clock
function at the start and end of the main function.
(Actually, there are some declaration of variables but I deleted them for readability of my questions). Then I think I will be able to measure the total elapsed time.
ANSWER
Answered 2020-Feb-06 at 16:03Taking a snapshot of the time before std::cin >> a >> b;
leads to an inaccurate measurement as you're likely starting the clock before you type in the values for a
and b
. Generally you want to put your timing as close as possible to the thing you're actually measuring.
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