User-defined Download
Application Note
User-defined Download Application Note
1. Applied Products: SM59XX Series, SM59DXX Series, SM59RXX Series.
2. Object: User can define command as entry ISP password through ISAP software to run
programming.
3. Operation (For example SM59D04G2)
3.1 ISAP Operating Step
3.1.1 Program main code and ISP service code into the IC.
3.1.2 Power on your target board and connect to your PC.
3.1.3 Click ISAP icon to activate ISAP V2.X.
3.1.4 Select “User-defined” and set baud rate speed according to customer’s transmission
speed. For example, we select 115200bps due to the sample code using 115200bps.
3.1.5 Load sample code into ISAP.
3.1.6 Key in your user-defined command into ISAP according to your receive command of
UART interrupt subroutine. User-defined command length range is between 1~32 byte,
and data type is hexadecimal.
Specifications subject to change without notice, contact your sales representatives for the most recent information.
ISSFA-0140
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Ver. A 2009/08
User-defined Download
Application Note
3.1.7 Press “Autorun” then ISAP will start programming. When finish programming, ISAP shows
“MCU Reset Succeeded!”.
Specifications subject to change without notice, contact your sales representatives for the most recent information.
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Ver. A 2009/08
User-defined Download
Application Note
3.2 Flow Chart
PC
MCU
ISAP V2.X.X
Initial UART
Run customer＇s main
code
NO
Send user-defined
command
Receive data
YES
Enter UART interrupt
NO
Check data = userdefined data
YES
NO
Check data number
= nCommandLength
YES
NO
Receive ACK
Send 0x5A
YES
Fail
Start ISP erase,
program, protect,
reset
LJMP ISP address
Specifications subject to change without notice, contact your sales representatives for the most recent information.
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Ver. A 2009/08
User-defined Download
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3.3 Sample code
3.3.1 Keil C
Description
main.c (Main
program)
//This sample code included
main.c、GoToISP_Low.A51
#include "SM59D04G2.h"
#define nCommandLength 32
#define nAckCommand
0x5A
unsigned char UartCmdCount;
unsigned char code CommandArray[nCommandLength]=
{0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
0x17, 0x18, 0x19, 0x20, 0x21, 0x22, 0x23, 0x24,
0x25, 0x26, 0x27, 0x28, 0x29, 0x30, 0x31, 0x32};
extern GoToISP_Low();
void delayms(unsigned int mscnt)
{
unsigned int i;
while(mscnt--)
{
for(i=0;i<250;i++);
}
}
void init_UART_timer1(unsigned char BR)
{
SCON = 0x50;
//SCON: serail mode 1, 8-bit UART, enable receive
TMOD = 0x22;
//TMOD: timer 1, mode 2, 8-bit reload
PCON = 0x80;
//SMOD = 1;
TH1 = BR;
//Baud:57600 fosc=22.1184MHz
TR1 = 1 ;
//timer 1 run
EA = 1;
//all interrupt enable
ES = 1;
//UART enable
}
void init_UART_timer2(unsigned int T2value)
{
RCAP2L = (char)T2value;
RCAP2H = (char)(T2value>>8);
T2CON = 0x34;
SCON = 0x50;
EA = 1;
//all interrupt enable
ES = 1;
//UART enable
}
void main(void)
{
init_UART_timer2(0xFFFA);//choise Timer 1 or Timer 2 as baud rate generator
//init_UART_timer1(0xFF);
//SyncMOS_GoToISP via UART
//TH1 = 0xFF;
//12T, 3.579MHz(19200), 11.0592MHz(57600)
// 6T, 3.579MHz(38400), 11.0592MHz(115200)
Specifications subject to change without notice, contact your sales representatives for the most recent information.
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Ver. A 2009/08
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//TH1 = 0xFE;
//TH1 = 0xFD;
//TH1 = 0xFC;
//TH1 = 0xFB;
//TH1 = 0xF7;
//TH1 = 0xF5;
//TH1 = 0xF3;
//
//
while(1)
{
P0 = 0xF0;
P0 = 0x0F;
P2 = 0xF0;
P2 = 0x0F;
}
//12T, 14.31818MHz(38400), 22.1184MHz(57600), 14.7456MHz(38400)
// 6T,
22.1184MHz(115200)
//12T, 4MHz(7200), 8MHz(14400), 8.192MHz(14400), 16MHz(28800)
// 6T, 4MHz(14400),8MHz(28800), 8.192MHz(28800), 16MHz(57600)
//
// 6T, 14.31818MHz(38400), 14.7456MHz(38400)
//12T, 18.432MHz(19200)
// 6T, 18.432MHz(38400)
//12T, 24.576MHz(14400), 25MHz(14400)
// 6T, 24.576MHz(28800), 25MHz(28800)
//12T, 20MHz(9600)
// 6T, 20MHz(19200)
//12T, 6MHz(2400), 12MHz(4800), 24MHz(9600)
// 6T, 6MHz(4800), 12MHz(9600), 24MHz(19200)
delayms(300);
delayms(300);
delayms(300);
delayms(300);
}
GoToISP_Low.
A51
void serial(void) interrupt 4
{
if(RI)
{
if(SBUF == CommandArray[UartCmdCount])
UartCmdCount++;
else
UartCmdCount=0;
RI = 0 ;
if(UartCmdCount==nCommandLength)
{
IE = 0x00; //disabling interrupt
SBUF = nAckCommand;
while(!TI);
TI = 0;
T2CON = 0x00; //disabling T2 because using T1 baud rate generator in ISP code
GoToISP_Low(); //LJMP 3E00H ISP code address
}
}
else
TI=0;
}
; GoToISP_Low.A51
NAME
GoToISP_Low
?PR?GoToISP_Low?GOTOISP_LOW SEGMENT CODE
PUBLIC GoToISP_Low
RSEG ?PR?GoToISP_Low?GOTOISP_LOW
USING
0
GoToISP_Low:
MOV DPTR,#3E00H ;LJMP 3E00H ISP code address
Specifications subject to change without notice, contact your sales representatives for the most recent information.
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Ver. A 2009/08
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PUSH DPL
PUSH DPH
RETI
END
3.3.2 Assembly
Description
Main program
nCommandLength EQU 32 ;setting command length by user
UARTCmdCount EQU 20H
T2CON EQU 0C8H
RCAP2L EQU 0CAH
RCAP2H EQU 0CBH
ORG 0000H
AJMP
ISP_Entry
ORG 0023H
AJMP
UART_INTERRUPT
ISP_Entry:
ACALL
SyncMOS_GoToISP ;initial setting
;;;
;;; main code start
;;;
/* LED display demo */
MOV DPTR,#TABLE_01 ;DPTR point to data area
START:
MOV R0,#0
;
MOV R1,#8
;8 datas
LOOP:
MOV A,R0
;put R0 contect to A
MOVC
A,@A+DPTR ;use indirect address get data, and put into A
MOV P0,A
;put ACC to Port 0
MOV P1,A
;put ACC to Port 1
ACALL
DELAY100MS ;delay 0.1 second
INC R0
;R0 point to next data
DJNZ
R1,LOOP
;if R1 != 0 then jump to LOOP
SJMP
START
;if R1=0 then jump to START
;;; dealy subroutine
DELAY100MS:
MOV R5,#10
;Dealy 10x10ms=100ms
DELAY10MS:
MOV R6,#50
;delay time 10ms @ 11.0592MHz
DELAY01:
MOV R7,#99
DJNZ
R7,$
; Inner loop delay
DJNZ
R6,DELAY01
;
DJNZ
R5,DELAY10MS
RET
;;;
TABLE_01:
DB 11100111B
DB 11000011B
DB 10000001B
DB 00000000B
Specifications subject to change without notice, contact your sales representatives for the most recent information.
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Ver. A 2009/08
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DB
DB
DB
DB
10000001B
11000011B
11100111B
11111111B
;;;
;;; main code End
;;;
;;;
;;; SyncMOS_GoToISP Subroutine
;;;
SyncMOS_GoToISP:
;;;======UART Timer1 setting=============
;MOV
TMOD,#00100001B
;Timer 1 is mode1 is mode 2, Timer 0 is mode 1
;;;
;MOV
TH1,#0FFH
;baud rate, 12T, 3.579MHz(19200), 11.0592MHz(57600)
;
6T, 3.579MHz(38400), 11.0592MHz(115200)
;MOV
TH1,#0FEH
;baud rate, 12T, 14.31818MHz(38400), 22.1184MHz(57600),
14.7456MHz(38400)
;
6T,
22.1184MHz(115200)
;MOV
TH1,#0FDH
;baud rate, 12T, 4MHz(7200), 8MHz(14400), 8.192MHz(14400),
16MHz(28800)
;
6T, 4MHz(14400),8MHz(28800), 8.192MHz(28800),
16MHz(57600)
;MOV
TH1,#0FCH
;baud rate,
;
6T, 14.31818MHz(38400), 14.7456MHz(38400)
;MOV
TH1,#0FBH
;baud rate, 12T, 18.432MHz(19200)
;
6T, 18.432MHz(38400)
;MOV
TH1,#0F7H
;baud rate, 12T, 24.576MHz(14400), 25MHz(14400)
;
6T, 24.576MHz(28800), 25MHz(28800)
;MOV
TH1,#0F5H
;baud rate, 12T, 20MHz(9600)
;
6T, 20MHz(19200)
;MOV
TH1,#0F3H
;baud rate, 12T, 6MHz(2400), 12MHz(4800), 24MHz(9600)
;
6T, 6MHz(4800), 12MHz(9600), 24MHz(19200)
;SETB
TR1
;enable Timer 1
;MOV
PCON,#10000000B ;set SMOD = 1
;;;======================================
;;;
;;;======UART Timer2 setting=============
;choise Timer 1 or Timer 2 as baud rate generator
MOV RCAP2H,#0FFH
MOV RCAP2L,#0FAH
MOV T2CON,#34H
;;;======================================
MOV SCON,#01010000B ;serial mode 1, REN=1, TI=0, RI=0
MOV IE,#90H ;enable UART interrupt
MOV UARTCmdCount,#00H
RET
UART_INTERRUPT:
JB RI,RX ; if RI=1 jump RX,else clear TI
CLR TI
RETI
RX:
CLR RI
PUSH ACC
Specifications subject to change without notice, contact your sales representatives for the most recent information.
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Ver. A 2009/08
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PUSH DPL
PUSH DPH
MOV A,UARTCmdCount
MOV DPTR,#COMMAND_TABLE
MOVC A,@A+DPTR
CJNE A,SBUF,CLR_UARTCmdCount
INC UARTCmdCount
MOV A,UARTCmdCount
CJNE A,#nCommandLength,RETURN
CLR EA
MOV SBUF,#5AH ;transmit ack
MOV DPTR,#3E00H ;LJMP 3E00H ISP code address
PUSH DPL
PUSH DPH
JNB TI,$
CLR TI
MOV T2CON,#00H ;disabling T2 because using T1 baud rate generator in ISP code
RETI
CLR_UARTCmdCount:
MOV UARTCmdCount,#00H
RETURN:
POP DPH
POP DPL
POP ACC
RETI
COMMAND_TABLE:
DB 01H,02H,03H,04H,05H,06H,07H,08H ;to define command by user
DB 09H,10H,11H,12H,13H,14H,15H,16H
DB 17H,18H,19H,20H,21H,22H,23H,24H
DB 25H,26H,27H,28H,29H,30H,31H,32H
END
Note:
※ The sample codes attach in ISAP V2.X.X setup directory “C:\Program Files\SyncMOS\
SyncMOS Writers\ISAP\OnlineUpdate\User-defined”.
※ SM59XX Series and SM59DXX Series using Timer1 as baud rate generator in ISP service code.
If using Timer2 as baud rate generator, please writing T2CON = 0x00 before jumping ISP to
avoid occupying UART port.
Specifications subject to change without notice, contact your sales representatives for the most recent information.
ISSFA-0140
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Ver. A 2009/08
User-defined Download
Application Note
4.
Baud Rate Reference Table
4.1 Timer 1，TH1[7:0] Setting Reference Table
4.1.1 Listing the part of frequencies as shown below. Please download calculation program on
SyncMOS website if you need other frequency.
（http://www.syncmos.com.tw/download_file/UART.rar）
4.1.2 No value of the cell means deviation too much, so we don’t suggest user to use it.
Baud rate
(BPS)
11.0592MHz/12T
115200
57600
22.1184MHz/12T
11.0592MHz/6T
28.6MHz/12T
28.63636MHz/12T
14.31818MHz/6T
36.81875MHz/12T
36.864MHz/12T
18.432MHz/6T
FC
FB
F8
F6
FF
FF
38400
FE
FD
28800
FE
FC
19200
FD
FA
14400
FC
F8
F3
9600
FA
F4
EC
7200
F8
F0
EB
E5
4800
F4
E8
E1
D8
2400
E8
D0
C2
B0
1200
D0
A0
84
60
Specifications subject to change without notice, contact your sales representatives for the most recent information.
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Ver. A 2009/08
User-defined Download
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4.2 Timer 2，RCAP2[15:0] Setting Reference Table
4.2.1 Listing the part of frequencies as shown below. Please download calculation program on
SyncMOS website if you need other frequency.
（http://www.syncmos.com.tw/download_file/UART.rar）
4.2.2 No value of the cell means deviation too much, so we don’t suggest user to use it.
Baud rate
(BPS)
3.579MHz/6T
14.7456MHz/12T
115200
FFFE
FFFC
57600
FFFC
FFF8
FFF5
FFEF
FFEC
38400
FFFA
FFF4
FFF0
FFE6
FFE2
28800
FFF8
FFF0
FFEA
FFDD
FFD8
19200
FFF4
FFE8
FFDF
FFCC
FFC4
14400
FFF1
FFE0
FFD5
FFBB
FFB0
9600
FFE9
FFD0
FFBF
FF98
FF88
7200
FFE1
FFC0
FFA9
FF75
FF60
4800
FFD1
FFA0
FF7E
FF30
FF10
2400
FFA3
FF40
FEFC
FE5F
FE20
1200
FF46
FE80
FDF7
FCBF
FC40
20MHz/12T
32MHz/12T
16MHz/6T
36.864MHz/12T
18.432MHz/6T
FFF6
Specifications subject to change without notice, contact your sales representatives for the most recent information.
ISSFA-0140
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Ver. A 2009/08