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MSP430F5336 bsl uart

Part Number: MSP430F5336

We plan to use MSP430F5336 on our design and we have two requirements

1. Have a serial link between MSP430F5336 and the T1042 CPU

2. Be able to upgrade MSP430F5336 firmware over the serial link

To meet the first requirement we are planning to use one of the two UARTS available on the MSP430F5336 (USCI_A0  P2.4, P2.5)

We were planning to upgrade firmware using this serial link, however the datasheet specifies that BSL on MSP430F5336 is using P1.1 and P1.2 as TX and RX.

Does it mean that we need to have two serial links between MSP430 and T1042? Or can we customize the BSL use USCI_A0?

Thank you ,

Dmitri Krivchitch