negative monocrome interted

Hi all! How can I write routine in negative mode (monocrome inverted) using an area of code? Who can help me? Are there special instructions in the new C book?
negative monocrome interted

Hi all! How can I write routine in negative mode (monocrome inverted) using an area of code? Who can help me? Are there special instructions in the new C book?
GPIO voltage problem

Hi, I have written this code.Stm32F107 #include <stdio.h> #include <string.h> #include "stm32f10x_gpio.h" #include "stm32f10x_rcc.h" #include "stm32f10x_tim.h" void delay(void){ int i,j; for...
GPIO voltage problem

Hi, I have written this code.Stm32F107 #include <stdio.h> #include <string.h> #include "stm32f10x_gpio.h" #include "stm32f10x_rcc.h" #include "stm32f10x_tim.h" void delay(void){ int i,j; for...
fmod with negative decimal numbers error?

the result of fmod(-0.6, 0.01) is -0.01 is this an error?