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Здравствуйте помогите начинающему в написании программы для платы mega 2560 и internet w1500 и платка RS232 на max3232, совместить протокололы разьемов rs232 с протоколами разъема internet

на ком. МАС

ПРОТОКОЛ rs232 

SE800 RS-232 Remote Control Command

VER: 1.2

Released date: Dec-01-2003

1 Physical layer

1.1 Control output format: RS-232C

1.2 Communication rate: 57600 BPS

1.3 Data format: 8 bits serial, LSB first, 1 start bit, 1 stop bit, odd parity

2. Data link layer

2.1 Frame format

1st 2nd 3rd 4th 5th 6th 7th ,,, Last-2 Last-1 Last

Header ID Length Data0 Data1 Data2 Data3 ,,, Chksum_L Chksum_H End

1) Header

Code consisting of one byte for frame synchronization.

The frame header send from the master machine is termed the command header.

The frame header send from the slave machine is termed the return header.

The command header byte is fixed as fallow.

1st: F0h (base 16)

The return header byte is fixed as fallow.

1st: FCh (base 16)

2) ID number

The equipment ID number is composed of 8 bits

The ID of SE800: 21h (base 16)

3) Length

The length is the sum of bytes from the header to the end.

It is composed of 8 bits.

6h (base 16) < Length <= 80h(base 16)

4) Data

Data block used by application layer.

Refer to Section 3.

5) Checksum

The 8 bits checksum is obtain from header to the last data,

then convert to two numeric ASCII code.

Checksum=header+ID+legth+data0+data1+… +data_last

chksum_L=(low nibble of checksum) + 30h

chksum_H=(high nibble of checksum) + 30h

6) End

The end byte are fixed to FFh(base 16).

Downloaded from

3. Application layer

The application layer designates the command structure and contents.

3.1 Command data format

1) The command group

03h(base 16) = SE800 control command

2) The operated refer to section 4.

3.2 Return data format

1) The command status

03h=SE800 control command status

2) The parameter refers to section 6.

4.  The operated of SE800 control command

4.1. OP#0 = control key code.( refer to section 5)

4.2. OP#1 and OP#2 = T-BAR control value

The T-bar control value is 10 bits and 1 enable bit.

The bit7 of OP#1       = T-bar control enable bit

The bit4 to bit 0 of OP#1 = the low 5 bits of the T-bar control value. The bit4 to bit 0 of OP#2 = the high5 bits of the T-bar control value.

4.3. OP#3 to OP#6 = joy-stick control value

The joy-stick control value is 1 enable bit ,10 bits of X value and 10 bits Y value.

The bit7 of OP#3        = joy-stick control enable bit.

The bit4 to bit 0 of OP#3 = the low 5 bits of the joy-stick’s X control value. The bit4 to bit 0 of OP#4 = the high5 bits of the joy-stick’s X control value. The bit4 to bit 0 of OP#5 = the low 5 bits of the joy-stick’s Y control value. The bit4 to bit 0 of OP#6 = the high5 bits of the joy-stick’s Y control value.

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5. The SE800 control key code (base 16)

01h = key_main_A

02h = key_main_B

03h = key_main_C

04h = key_main_D

05h = key_main_BK

06h = key_sub_A

07h = key_sub_B

08h = key_sub_C

09h = key_sub_D

0ah = key_sub_BK

0bh = key_audio_A

0ch = key_audio_B

0dh = key_audio_C

0eh = key_audio_D

0fh = key_a+v

10h = key_gpi

11h = key_gpi_play

12h = key_take = key_paly

13h = key_Tbar_audio