1. evm816x_msp430_vA2.zip Driver
2. ReadMe.txt File Contents

ReadMe.txt Driver File Contents (evm816x_msp430_vA2.zip)

*----------------------*
* MSP430F2132-Netra    *
*----------------------*
This Firmware allows INA220 power data to be read through a serial port and over the I2C0 bus.

*--------------------------------*
* Setup                          *
*--------------------------------*
Connect P7 to COM port of a computer. Use the following Terminal settings:
1. Baud Rate    = 115200
2. Data bits    = 8
3. Parity       = None
4. Stop bits    = 1
5. Flow Control = None
Switch the board on and Power Monnitor data will be displayed in the terminal.

*--------------------------------*
* I2C Register Map               *
*--------------------------------*
Description of the MSP430 I2C registers.
*----------------------*
* Register 0           *
*----------------------*
Function   : Firmware Version
Description: This is a Read Only register that returns the firmware version when read from.
*----------------------*
* Register 1           *
*----------------------*
Function   : Reserved for IR interface
Description:
*----------------------*
* Register 2           *
*----------------------*
Function   : Reserved for IR interface
Description:
*----------------------*
* Register 3           *
*----------------------*
Function   : Reserved for IR interface
Description:
*----------------------*
* Register 4           *
*----------------------*
Function   : Reserved for IR interface
Description:
*----------------------*
* Register 5           *
*----------------------*
Function   : Reserved for IR interface
Description:
*----------------------*
* Register 6           *
*----------------------*
Function   : Reserved for IR interface
Description:
*----------------------*
* Register 7           *
*----------------------*
Function   : Reserved for IR interface
Description:
*----------------------*
* Register 8           *
*----------------------*
Function   : Reserved for IR interface
Description:
*----------------------*
* Register 9           *
*----------------------*
Function   : Reserved for IR interface
Description:
*----------------------*
* Register 10          *
*----------------------*
Function   : INA220 address select
Description: This register stores the I2C address of the INA220 to be read or written to when a request is made on the main I2C bus.
*----------------------*
* Register 11          *
*----------------------*
Function   : INA220 register select
Description: This register stores the register address of the selected INA220 device that is to be read or written to.
*----------------------*
* Register 12          *
*----------------------*
Function   : INA220 High Data
Description: This register is used to get/set the higher 8-bits of the INA220 data. The register is also used as a trigger to fetch the INA220 data from the device and register stored in registers 10 and 11 respectively.
*----------------------*
* Register 13          *
*----------------------*
Function   : INA220 Low Data
Description: This register is used to get/set the lower 8-bits of the INA220 data. The register is also used as a trigger to set the INA220 data to the device and register stored in registers 10 and 11 respectively.
*----------------------*
* Register 14          *
*----------------------*
Function   : I2C GPIO Busy Status
Description: This register indicates whether an I2C GPIO transfer is taking place. The value 1 for this register indicates that the I2C GPIO bus is 'busy' and 0 indicates 'not busy'. Data is not sent or retrieved to or from the INA220 devices when the bus is busy. Register 14 should be polled when making an request to get/set the INA220 register values to know if the data was valid.