compiling main.c...
../Core/Src/main.c(22): error: #5: cannot open source input file "dev_uart.h": No such file or directory
#include "dev_uart.h"
../Core/Src/main.c: 0 warnings, 1 error
compiling gpio.c...
"no source": Error: #5: cannot open source input file "../Core/Src/gpio.c": No such file or directory
../Core/Src/gpio.c: 0 warnings, 1 error
compiling dma.c...
"no source": Error: #5: cannot open source input file "../Core/Src/dma.c": No such file or directory
../Core/Src/dma.c: 0 warnings, 1 error
compiling usart.c...
"no source": Error: #5: cannot open source input file "../Core/Src/usart.c": No such file or directory
../Core/Src/usart.c: 0 warnings, 1 error
compiling stm32f4xx_it.c...
../Core/Src/stm32f4xx_it.c(24): error: #5: cannot open source input file "dev_uart.h": No such file or directory