Programming RM57

Hi Anil,
What you need is to create a bootloader. This is a small program that will first need to be programmed into the flash using the JTAG interface. Once this bootloader program is running, it can use any available communication interface on the RM57 device to download your application firmware. For example, the bootloader can make use of the UART interface to download your application to the flash.

There are multiple application notes available to show how to create a bootloader for many of the Hercules devices. However, there is no specific bootloader application note for RM57 at this moment. You can use these other devices as a good starting point. Below is one application note on bootloader using UART interface for the RM48x device. It also includes the example project.

www.ti.com/.../spna190.pdf

Hi charles,

 But I want to enable ECC for entire flash. I have to calculate ECC for two different code. OK.

But how will I merge both ECC files to form one ECC file?? 

Regards

Anil

Hi Anil,

When you first program the bootloader into the flash using the CCS, the ECC will be automatically calculated. If you have played with RM57 you will realize that the ECC is programmed along with your program image. Otherwise, the CPU will immediately fail due to an un-correctable ECC error. In CCS, if you go to Tools->On Chip Flash you will need to click the Auto ECC generation checkbox.

Once your bootloader is programmed into the flash the next step is to program your application firmware into the flash via the UART interface. To do that, the booloader will execute the flash API ccode to be run from the RAM. The programming API will have the capability to also automatically generate the ECC for you. So this is taken care of for you. Check the SPNU501G flash API userguide for the Fapi_issueProgrammingCommand() where you will specify programming mode to generate the ECC along with the data.

Hi charles,

  I have IAR development tool. Whatever you told is it possible in that??

Regards

Anil

Hi Anil,

  I I'm not sure about IAR? I think this will be a question you can ask on IAR's support site. The key question is how they generate ECC for RM57 device.

  Once the bootloader is programmed into the device the second part about downloading the application firmware via the UART is independent of of the too, whether CCS or IAR. The flash API will take care of generating ECC while you program the application image to the flash. 

Thanks charles,

Can you explain how to enable "Auto ECC generation " in CCS??
Can you share some example code??

Regards
Anil