作るものめも
Page last updated 24 Dec 2010, by
muneｆ elec
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USB-UARTでOLEDに表示するものを作ってみる．
USB-SPIブリッジにする
#
03 Jan 2011 . Edited: 03 Jan 2011
Packet format
Data Format (Sent from host)
| Index |
data |
hex |
Description |
| 0 |
Header |
0x55 |
|
| 1 |
NumBytes |
|
Number of Data in decimal. |
| 2~ |
Data |
|
Command and data to send. |
Command ID:
1: Write 1 byte
2: Write n bytes
read next byte and check NumBytes.
3: Read 1 byte
4: Read n bytes
read next byte and check NumBytes.
5: Return Ack (For debug)
0x55: Change SPI mode
Read next byte and use as mode (0 - 3)
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Packet format
Command ID:
1: Write 1 byte
2: Write n bytes
read next byte and check NumBytes.
3: Read 1 byte
4: Read n bytes
read next byte and check NumBytes.
5: Return Ack (For debug)
0x55: Change SPI mode
Read next byte and use as mode (0 - 3)