CC2340R5: ROM bootloader Erase range and GPIO

Ryan Li

Intellectual 490 points

Part Number: CC2340R5

SDK version: 7_10_00_35

I have two questions:

Is the Flash Erase range of CC2340's ROM Bootloader unable to be changed?

During the test, I found that the ROM Bootloader uses the Command method to make the CC2340 Erase

Does this mean that every time Erase can only Erase all, and cannot select a range?

2.How to use Code to determine whether GPIO is currently in a HIGH or LOW state?

over 2 years ago

+1 Clément over 2 years ago

TI__Guru** 101570 points

Hi,

Thank you for reaching out.

First of all, I highly recommend to migrate to the newer SDK version available here: https://www.ti.com/tool/download/SIMPLELINK-LOWPOWER-F3-SDK

1- Your observation is correct, the flash only allows full erase through the ROM Bootloader

2- The ROM Bootloader automatically checks the voltage level on the backdoor pin.
After the device has booted in "normal" mode, the GPIO_read function can be used to read the voltage level on a pin. The example <SDK>\examples\rtos\LP_EM_CC2340R5\drivers\spiperipheral shows how to use this function.

I hope this will help,

Best regards,

0 Ryan Li over 2 years ago in reply to Clément

Intellectual 490 points

Thanks

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CC2340R5: ROM bootloader Erase range and GPIO