{
Reference address：Problems with microcontroller timers and serial port interrupts
TMOD |= 0x20; //0011 0000
SCON = 0x50; //0101,0000
TH1 = 0xFA;
TL1 = 0xFA;
TMOD = 0x01; //Should be changed to TMOD |= 0x01;
TH0 = 0x70;
TL0 = 0xc6;
ET0=1;
ES = 1; //
EA = 1; //
TR0 = 1;
TR1 = 1; //
}
The above is the serial port interrupt initialization and timer T0 initialization. At first glance, there is no problem.
But please note that when setting the TMOD of the timer, you should use TMOD |= 0x01,,, otherwise the serial port interrupt will not work,,,, these small problems are always very annoying~~~~~
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