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Original question:

CC3220SF-LAUNCHXL: Uniflash programming using UART issue

CC3220S-LAUNCHXL: Using UARTLOAD SOP for debugging

Collin P
Prodigy 141 points
Part Number: CC3220S-LAUNCHXL
Other Parts Discussed in Thread: UNIFLASH, CC3220S, , SYSCONFIG

Hi, I am trying to use the CC3220S-LAUNCHXL to flash an external CC3220S MCU. Using Uniflash I am able to load the code and run the code. However, I would like to debug and use breakpoints directly from Code Composer Studio. As far as I can tell from the "project->targetConfigs->CC3220S.ccxml" the only options are CC3220S and CC3220S_SWD.

Question 1: Can you program/flash an external MCU using the UARTLOAD SOP mode from Code Composer Studio, or do I need to use UniFlash? (And how do I do it if possible?)

Question 2: If I can use CCS to flash via UARTLOAD, is it possible to debug using breakpoints?

Question 3: If I want to be able to debug and write to a console and can't use UARTLOAD to do that, then the fewest pins needed to accomplish this would be 2-wire SWD (debug) and try to implement SWO on another pin?