Pergunta de entrevista da empresa Valeo

C function to swap to integers, directly and swapping two pointers that points to integers. C function dealing with bit by bit, but i don't really remember the application. sych and asych. interrupts and ISR, asked to write ISR and draw what will happen on the memory A lot of Questions on memory and what will happen if any of those functions were executed CAN, LIN, UART, SPI and I2C.. how they work macros and functions #if rentrant functions