MSP430I2041: MSP430i2041 Programming Over UART

SUMIT RANJAN

Expert 2005 points

Part Number: MSP430I2041

Hi Team,

I am planning to use MCU MSP430i2041 in one of our Metering related device in which host controller will be Wi-FI module (ESP32).

Wi-Fi module and this MSP430i2041 will be connected through UART. we wanted to develop design in a way so that in field if required we can upgrade MSP430i2041 firmware through OTA by using Wi-FI module host controller.

So, My question is:

1. Can we flash MSP430i2041 by using UART after Programming first tine through JTAG?

2. If yes, then which dedicated UART we should use and what other pin required to send in bootloader mode?

over 5 years ago

0 Gary Gao over 5 years ago

TI__Mastermind 38595 points

Due to the i2041 don't have ROM based BSL so you must build a custom BSL in main memory.

You can refer to this document to build the BSL https://www.ti.com/lit/an/slaa600d/slaa600d.pdf?ts=1597806773840&ref_url=https%253A%252F%252Fwww.ti.com%252Ftool%252FMSPBSL%253FkeyMatch%253DMSPBSL%2526tisearch%253DSearch-EN-everything%2526usecase%253DGPN

I have create a demo for I2020

Firmware_Update.zip

0 SUMIT RANJAN over 5 years ago in reply to Gary Gao

Expert 2005 points

HI Gary,

Thanks for quick response and sharing info. I am going through this.

But can you please confirm about wiring connection. Only UART connection is sufficient along with Ground or we need any extra GPIO/reset also to upgrade firmware?

Also, that document will be helpful for all MSP430 series?