5.0 TOKEN I/O
The MSP430FR5739 microcontroller on the DLP-2232MSPF comes preprogrammed with firmware
that provides rudimentary access to the port pins via either the VCP or DLL drivers. Features include
the ability to read and write individual port pins.
The firmware in the DLP-2232MSPF also provides access to the MSP430FR5739’s A/D converter
and communications. Commands sent to the Token I/O firmware must adhere to a specific
communications protocol. Each command sequence contains the following information:
Byte 0:
Byte 1:
Byte 2…n:
Number of bytes in command sequence
Command
Parameter/data bytes
For example, setting Port Pin P1.1 high would require the following string of bytes:
0x05, 0x30, 0x11, 0x00, 0x01
Definition of the Bytes :
0x05 – Number of bytes in command
0x30 – Command for digital port-pin access
0x11 – Affected port pin
0x00 – Set port pin to output
0x01 – Desired state of port pin
The port pins equate to hexadecimal numeric constants as defined here:
PORT 1 :
0x10 = P1.0 MSP430FR5739 Pin 1, DLP-2232MSPF module Pin J1.2
0x11 = P1.1 MSP430FR5739 Pin 2, DLP-2232MSPF module Pin J1.1
0x12 = P1.2 MSP430FR5739 Pin 3, DLP-2232MSPF module Pin J1.4
0x13 = P1.3 MSP430FR5739 Pin 8, DLP-2232MSPF module Pin J1.5
0x14 = P1.4 MSP430FR5739 Pin 9, DLP-2232MSPF module Pin J1.6
0x15 = P1.5 MSP430FR5739 Pin 10, DLP-2232MSPF module Pin J1.7
0x16 = P1.6 MSP430FR5739 Pin 28, DLP-2232MSPF module Pin J1.35
0x17 = P1.7 MSP430FR5739 Pin 29, DLP-2232MSPF module Pin J1.34
PORT 2 :
0x22 = P2.2 MSP430FR5739 Pin 23, DLP-2232MSPF module Pin J1.26
0x23 = P2.3 MSP430FR5739 Pin 34, DLP-2232MSPF module Pin J1.38
0x24 = P2.4 MSP430FR5739 Pin 35, DLP-2232MSPF module Pin J1.39
0x27 = P2.7 MSP430FR5739 Pin 33, DLP-2232MSPF module Pin J1.37
Rev. 1.1 (November 2011)
4
? DLP Design, Inc.