C语言串口通信-源代码
void SerInit(int baud,int configuration) { disable(); outportb(portaddr+LCR,0x80); outportb(portaddr+LSB,baud); outportb(portaddr+MSB,0x00); outportb(portaddr+LCR,configuration); enable(); }; void SerOpen(void) { vect_com=getvect(portf+8); disable(); inportb(portaddr+RXD); inportb(portaddr+MSR); inportb(portaddr+LSR); inportb(portaddr+IIR); outportb(portaddr+IER,IERV); outportb(portaddr+MCR,OUT2|ERTS|EDTR); outportb(IMASKREG,inportb(IMASKREG)&(~(1<<portf))); setvect(portf+8,receiver); enable(); }; void SerClose(void) { disable(); outportb(portaddr+IER,0); outportb(portaddr+MCR,0); outportb(IMASKREG,inportb(IMASKREG)|(1<<portf)); enable(); setvect(portf+8,vect_com); }; void Getportaddr(int port) { switch (port) { case 0: portaddr=0x3F8; break; case 1: portaddr=0x2F8; break; case 2: portaddr=0x3E8; break; case 3: portaddr=0x2E8; break; } portf=(port==0)?4:3; };