STC micro STC8A8K64D4 Series - Page 384

STC8A8K64D4 Series Manual
- 368 -
void Uart4Isr() interrupt 18
{
if (S4CON & 0x02)
{
S4CON &= ~0x02;
busy = 0;
}
if (S4CON & 0x01)
{
S4CON &= ~0x01;
buffer[wptr++] = S4BUF;
wptr &= 0x0f;
}
}
void Uart4Init()
{
S4CON = 0x50;
T4L = BRT;
T4H = BRT >> 8;
T4T3M = 0xa0;
wptr = 0x00;
rptr = 0x00;
busy = 0;
}
void Uart4Send(char dat)
{
while (busy);
busy = 1;
S4BUF = dat;
}
void Uart4SendStr(char *p)
{
while (*p)
{
Uart4SEND(*p++);
}
}
void main()
{
P0M0 = 0x00;
P0M1 = 0x00;
P1M0 = 0x00;
P1M1 = 0x00;
P2M0 = 0x00;
P2M1 = 0x00;
P3M0 = 0x00;
P3M1 = 0x00;
P4M0 = 0x00;
P4M1 = 0x00;
P5M0 = 0x00;
P5M1 = 0x00;
Uart4Init();