Olimex Support Forum

ARM => JTAG => Topic started by: Hitoshi on February 18, 2022, 10:08:15 am

Title: Can the ARM-USB-TINY-H put the SRST pin into a high impedance state?
Post by: Hitoshi on February 18, 2022, 10:08:15 am
Hi,
. Can ARM-USB-TINY-H put the SRST pin into a high impedance state?
. What is the resistance value of the pull-resister to the SRST pin in ARM-USB-TINY-H?
Title: Re: Can the ARM-USB-TINY-H put the SRST pin into a high impedance state?
Post by: LubOlimex on August 25, 2022, 10:38:15 am
In ARM-USB-TINY-H SRST has big pull-down 1M. It is good to have some pull-up SRST at your target (10k would be good value for the pull-up at the target, but no more than 50k).

SRST can also toggled via software means since there is transistor routing it to the FT2232HL, try with the software options provided in OpenOCD.