STC micro STC8A8K64D4 Series Reference Manual page 863

STC8A8K64D4 Series Manual
Appendix M Example Routine of ISP download for
STC8A8K64D4 series MCUs using third-party MCU
C language code
/*Note: When using this code to download the STC8A8K64D4 series of microcontrollers, you must execute the Download code before
powering on the target chip, otherwise the target chip will not download correctly.*/
#include "reg51.h"
typedef bit
typedef unsigned char
typedef unsigned short
//Macro and constant definition
#define FALSE
#define TRUE
#define LOBYTE(w)
#define HIBYTE(w)
#define MINBAUD
#define MAXBAUD
#define FOSC
#define BR(n)
#define T1MS
#define FUSER
#define RL(n)
sfr AUXR = 0x8e;
sfr P3M1 = 0xB1;
sfr P3M0 = 0xB2;
// Variable definitions
BOOL f1ms;
BOOL UartBusy;
BOOL UartReceived;
BYTE UartRecvStep;
BYTE TimeOut;
BYTE xdata TxBuffer[256];
BYTE xdata RxBuffer[256];
char code DEMO[256];
// Functions declarations
BOOL;
BYTE;
WORD;
0
1
((BYTE)(WORD)(w))
((BYTE)((WORD)(w) >> 8))
2400L
115200L
11059200L
(65536 - FOSC/4/(n))
(65536 - FOSC/1000)
24000000L
(65536 - FUSER/4/(n))
//1ms flag
// Serial transmit busy flag
// Serial data receiving completion flag
// Serial data receiving control
// Serial communication timeout counter
// Serial data transmission buffer
// Serial data receiving buffer
// Demo code data
//Main chip working frequency
// Calculation formula of serial port baud rate of main chip
// 1ms timing initial value of main chip
//STC8 Series target chip operating frequency
//STC8 Serial target chip baud rate calculation formula
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