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Host Display Comments
0xFE Command Prefix
0x24 Upload Font File Command
0x01 Reference ID
0x19 Size (LSB)
0x00 Size (MSB)
0x01 Confirmation Byte
0x01 Confimation Byte
0x05 Font Width
0x05 Echo Font Width
0x01 Confimation Byte
0x07 Font Height
0x07 Echo Font Height
0x01 Confimation Byte
0x49 Font ASCII Start Value
0x49 Echo Font ASCII Start Value
0x01 Confimation Byte
... ... ...
0x60 Last Font File Byte
0x60 Echo Last Font File Byte
0x01 Confirm Upload Finished
Table 55: Upload Protocol
data that you wish to transfer, LSB to MSB. The LSB must be transmitted first followed by the MSB. After
receiving the MSB the display module will send a confirm byte, 0x01, if the file fits and continue, or decline
byte, 0x08, and terminate the session.
Byte Description
0x01 Confirm: Will continue the file transfer.
0x08 Decline: Terminate the session.
The last part of uploading a font file is to upload the file data. After transmitting each byte of the file the
module will echo the byte and wait for a confirmation byte of 0x01 until the file has completed uploading.
Below is an example of uploading the font file which we created in Section 5.1.2 on page 20.
At times that the display or the host sees anything else other than 0x01 for confirmation (usually a 0x08)
the upload is aborted.
Matrix Orbital GLK19264-7T-1U 45
- GLK19264-7T-1U 1
- Technical Manual 1
- Revision: 1.2 1
- Contents 2
- 1 Getting Started 6
- Figure 3: Standard Power 7
- Figure 4: 5V Power Adapter 7
- 1.3 Features 9
- 1.4 Connecting to a PC 9
- 1.5 Installing the Software 10
- 2 Hardware Information 11
- 2.4 Protocol Select Jumpers 15
- 2.5 Manual Override 16
- 3 Troubleshooting 17
- 4 Communications 19
- C Transaction Example 20
- 4.1.3 Serial Communication 20
- 4.1.4 USB Communication 20
- 4.2 Turn Flow Control On 21
- 4.3 Turn Flow Control Off 21
- 4.4 Changing the I 22
- C Slave Address 22
- 4.5 Changing the Baud Rate 22
- CrystalSpeed 23
- 8×DesiredBaud 23
- 5.1.2 Creating a Font 25
- 5.2 Uploading a Font File 26
- 5.3 Setting the Current Font 27
- 5.4 Font Metrics 28
- 5.5 Set Box Space Mode 28
- 6.1 Introduction 29
- 6.2 Move Cursor Home 29
- 6.5 Auto Scroll On 30
- 6.6 Auto Scroll Off 30
- 7 Bitmaps 31
- 7.4 Drawing a Bitmap Directly 32
- 8 Bar Graphs and Drawing 33
- 8.3 Draw Pixel 34
- 8.4 Drawing a Line 34
- 8.5 Continue a Line 34
- 8.6 Draw a Rectangle 35
- 8.7 Drawing a Solid Rectangle 35
- 8.8 Initializing a Bar Graph 36
- 8.9 Drawing a Bar Graph 36
- 8.11 Shifting a Strip Chart 38
- 9 General Purpose Output 39
- 10 Keypad 41
- 10.4 Poll Key Press 43
- 10.5 Clear Key Buffer 43
- 10.6 Set Debounce Time 43
- 10.7 Set Auto Repeat Mode 44
- 10.8 Auto Repeat Mode Off 45
- 10.9 Assign Keypad Codes 45
- 11 Display Functions 46
- 11.3 Display On 47
- 11.4 Display Off 47
- 11.5 Set Brightness 47
- 11.6 Set and Save Brightness 48
- 11.7 Set Contrast 48
- 12 Filesystem 49
- 12.2 Wipe Filesystem 51
- 12.3 Deleting a File 53
- 12.4 Get Filesystem Space 53
- 12.5 Get Filesystem Directory 54
- 12.6 Filesystem Upload 54
- 12.7 Downloading a File 54
- 13 Data Security 55
- 13.2 Set Remember 56
- 13.3 Data Lock 56
- 13.4 Set and Save Data Lock 58
- 13.5 Dump the Filesystem 58
- 13.6 Write Customer Data 58
- 13.7 Read Customer Data 58
- 14 Miscellaneous 59
- 15 Command Summary 61
- 15.4 Bitmaps 62
- 15.5 Bar Graphs and Drawing 62
- 15.6 General Purpose Output 63
- 15.7 Keypad 63
- 15.8 Display Functions 64
- 15.9 Filesystem 64
- 15.10 Data Security 65
- 15.11 Miscellaneous 65
- 15.12 Command By Number 66
- 16 Appendix 67
- 16.2 Optical Characteristics 68
- 16.3 Physical Layout 68
- Figure 24: Physical Diagram 69
- 16.4 Ordering Information 71
- 16.5 Definitions 71
- 16.7 Revision History 71
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