| Online Development Notebook > Index > ODN > Raw Device Programming > 02 - WriteBCmd |
Command #02 - WriteBCmd
Description:
Write a byte value to port B. The possible values range from 0-255 (00h to FFh).
Command Format:
| Byte Number | Description |
| 0 | 02h: WriteBCmd |
| 1 | Byte Data - This byte is written to port B, D8 - D15 The most significant bit of the byte value is written to D15 |
| 2 | <not used> |
| 3 | <not used> |
| 4 | <not used> |
| 5 | <not used> |
| 6 | <not used> |
| 7 | <not used> |
Command Format Details:
Byte 0 contains the command. Byte 1 contains the data to write to port B. Byte 2 through byte 7 are unused.
Response Format:
| Byte Number | Description |
| 0 | 02h: WriteBCmd |
| 1 | <not used> |
| 2 | <not used> |
| 3 | <not used> |
| 4 | <not used> |
| 5 | <not used> |
| 6 | <not used> |
| 7 | <not used> |
Response Format Details:
Byte 0 contains the command. Byte 1 through byte 7 are unused.
Example Usage:
Writing a 11h to port B with the command 02-11-00-00-00-00-00-00 will set lines B.4 and B.3 high and will set the remainder of the lines low, assuming that they are configured as outputs.
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| Application Notes: U4x1 Application Notes Misc Applications and Information FAQ |