STC micro STC8A8K64D4 Series - Page 431

STC8A8K64D4 Series Manual
- 415 -
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();
IE2 = 0x10;
EA = 1;
Uart4SENDStr(“Uart Test !\r\n”);
while (1)
{
if (rptr != wptr)
{
Uart4SEND(buffer[rptr++]);
rptr &= 0x0f;
}
}
}
Assembly code
;Operating frequency for test is 11.0592MHz
AUXR DATA 8EH
T2H DATA 0D6H
T2L DATA 0D7H
S4CON DATA 84H