CC3220S: Alternate UART Programming Pins

Collin P

Part Number: CC3220S

I know that the documentation says to use GPIO_01 and GPIO_02 when doing UART flash, but I was curious if any of the UART1_TX and UART1_RX pins could be used for programming.

CC3220R, CC3220S, and CC3220SF SimpleLink™ Wi-Fi® Single-Chip Wireless MCU Solutions datasheet (Rev. B)

over 4 years ago

0 Jan D over 4 years ago

Guru 80275 points

Hi,

No. You can use pins GPIO_01 and GPIO_02 for UART loader only. Because pin numbers are hardcoded inside ROM bootlooder code.

Jan

0 Vasav Shah1 over 4 years ago in reply to Jan D

Prodigy 235 points

Hi Jan,

Is it possible to change the bootloader code, to change the UART pins?

Thanks!

0 Jan D over 4 years ago in reply to Vasav Shah1

Guru 80275 points

Hi,

No. Bootlaoder is inside masked ROM inside CC32xx chip and from this reason cannot be changed.

Jan

0 Collin P over 4 years ago in reply to Jan D

Prodigy 141 points

Thank you for your help Jan

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CC3220S: Alternate UART Programming Pins