Recently, I saw a friend on the Internet asking how the single chip microcomputer sends a string of Chinese characters to the computer. In fact, this problem is not difficult. ha-ha. As long as the relevant parameters are set well, and then the Chinese characters are defined as a group of characters and sent to the computer.
In order to let you know more clearly, I wrote the following program to demonstrate it.
Operating conditions:
1. XP operating system.
2. XP HyperTerminal display.
3.WJ-V4. 0 development board.
4. Single chip microcomputer STC89C52
5. Crystal oscillator 11.0592m
Operation steps:
1. Set tmod, set baud rate and working mode of timer 1.
2. Set the initial value of the timer.
3. Set the working mode of serial port.
4. Set the baud rate not to double.
5. Turn on Tr1 to allow transmission.
6. Start the timer.
7. Serial interrupt on.
8. Open EA interrupt.
Now send the source code:
#include
#defineucharunsigned char
#defineuint unsigned int
bitFS_ Bit = 0;// Send flag bit
codeuchar TEXT0［］ = “********************************rnn”;
Codeuchar text1 [] = “welcome to the e-enthusiast community! RNN”;
codeuchar TEXT2［］ = “www.wang1jin.com！rnn”;
Codeuchar Text3 [] = “51 free development board PCB free! RNN”;
Codeuchar Text4 [] = “gift address” http://www.wang1jin.com/shop/goods.php ？ id=2rnn”;
codeuchar TEXT5［］ = “********************************rnnnnn”;
void Delay_ Ms（uint i）;// Delay Functions
voidUART_ Char（uchar Value）;// Send a data
void Prints（uchar *Value）;// Send a set of data
void main（void）
{
TMOD = 0x20;// Set the baud rate to 9600 and the working mode of timer 1
TL1 = 0xFD;// Set initial value
TH1 = 0xFD;
SCON = 0x50;// Set the working mode of serial port
PCON = 0x00;
TR1 = 1;// Allow sending
ET0 = 1;// Start timer
ES = 1;// Serial interrupt enable
EA = 1;
while（1）
{
Prints（TEXT0）;// send data
Prints（TEXT1）;
Prints（TEXT2）;
Prints（TEXT3）;
Prints（TEXT4）;
Prints（TEXT5）;
Delay_ Ms（60000）;// delayed
}
}
void INIT_ Uart（void）interrupt 4
{
If (RI) / / if data is received
{
RI = 0;
}
else
{
TI = 0;// Send a data
FS_ Bit = 0;// Clear mark
}
}
void Uart_ Char（uchar Value）
{
SBUF = Value;// send data
FS_ Bit = 1;// Set send flag bit
while（FS_Bit）;
}
void Prints（uchar *Value）
{
while（（*Value） ！= ‘’）// If not sent
{
Uart_ Char（*Value）;// Send one bit data
Value++;// The pointer points to the next data bit
}
}
void Delay_ Ms（uint i）
{
while（–i ）;
}
Finally, let’s see the effect picture of the program:
