Arduino for STM32

I'm trying to use a library written for Atmel chip. commandStartNewFrame(UART_PIXEL_FORMAT_RGB565); for (uint16_t j=0; j<lineCount; j++) { for (uint16_t i=0; i<lineLength; i++) { waitForPreviousUartByteToBeSent(); UDR0 = formatRgbPixelByteH(colorH); waitForPreviousUartByteToBeSent(); UDR0 = formatRg...