Porting project from msp430F5438 to MSP430f2274

Hi seenn,

I'm not familiar with the particular example that you are porting.

You are moving some code that is currently implemented on an MSP430F5438 device, onto an MSP430F2274 device? Have you confirmed that the MSP430F2274 has enough flash space to support this size of code? Can you link the example code that you are trying to port? The MSP430F2274 only has up to 32kB of Flash, whereas if your code was currently using the MSP430F5438 device, that has up to 256kB of Flash so you are porting from a much larger part to a much smaller part. You should find if this is even feasible, by building the code for the MSP430F5438 device, and then in CCS or IAR open up the .map file to find the code size.

Regards,

Katie

Hi seenn,

There is a good migration guide for going from MSP430F2xx parts to MSP430F5xx parts here - you'll just be going the other direction with your porting: www.ti.com/.../slaa396

First, you'll need to change the device in the project settings to select MSP430F2274. If the project is including "msp430.h" then this will automatically include the correct device header file with correct pin and register definitions.

Then you'll want to find what clock sources and frequencies are used for the MSP430F5438 for MCLK, SMCLK, and ACLK and set up the MSP430F2274 similarly. The clock systems on these parts are very different, so this will take some porting effort to compare the UCS module on the MSP430F5xx parts to the BCS+ module on the 2xx parts. You can find more information in the migration guide www.ti.com/.../slaa396 and by comparing the chapters in the 5xx user guide www.ti.com/.../slau208 and the 2xx user guide www.ti.com/lit/pdf/slau144.

Next, you'll want to go through all of the code and see what peripherals it uses, and then find if those are different in the MSP430F5438 and in the MSP430F2274, and make adjustments. You can find definitions for all of the registers in the MSP430F5438 modules in this 5xx user's guide www.ti.com/.../slau208 and then you can compare to the definitions for the same modules on the MSP430F2274 by looking at the 2xx user's guide www.ti.com/.../slau144.

You'll also need to compare the datasheets of the two devices - that is where you will find the different pins that you will need to use for the different functions, and how to configure them. www.ti.com/.../msp430f5438 www.ti.com/.../msp430f2274 There is a section in each datasheet about how to configure the GPIO registers to select different functions on different pins, and there is another section that shows the pinout of the device, which will help when you are figuring out which pins you are going to connect to other devices in your system.

You'll need to understand what the code does and how it works for this migration to work out well for you. You are trying to port one of the Z-stack examples, http://www.ti.com/tool/z-stack correct? For more help in understanding the ZNP example code from TI or specific questions about that code, you may want to post in the Zigbee & Thread forum where they will be more familiar with this code.

Hope this helps to point you in the right direction.

Regards,
Katie