--- **[tickets:#436] SWD WAIT Issue** **Status:** new **Milestone:** 0.11.0 **Labels:** nrf5 swd orundetect **Created:** Wed Sep 25, 2024 08:11 AM UTC by JingJia Shi **Last Updated:** Wed Sep 25, 2024 08:11 AM UTC **Owner:** nobody **Attachments:** - [fig1.png](https://sourceforge.net/p/openocd/tickets/436/attachment/fig1.png) (126.0 kB; image/png) - [fig2.png](https://sourceforge.net/p/openocd/tickets/436/attachment/fig2.png) (77.8 kB; image/png) Hi, i'm using openocd to burn some nrf5 chips with Jlink. Here is the issue i found: 1. set adapter speed to 1400 kHz, program progress seen good; 2. set adapter speed to 1500 kHz , program process will fail; 2.1 openocd aborted the program because the target returned ACK WAIT or ACK FAIL; 3. when i use nrfjprog + Jlink , the swd clk speed is 1800KHz and program process seen good; 3.1 nrfjprog won't aborted the program although the target return ACK WAIT , it just retry current SWD Request many times. 3.2 if target return ACK WAIT, nrfjprog will sent the following data bit (see attachment fig 1); 3.3 openocd will check the ACK type after all data bits send over,then do some action (see attachment fig 2); Is there a way to change the swd read/write behavior so that it resend after receiving an ACK WAIT? --- Sent from sourceforge.net because openocd-devel@lists.sourceforge.net is subscribed to https://sourceforge.net/p/openocd/tickets/ To unsubscribe from further messages, a project admin can change settings at https://sourceforge.net/p/openocd/admin/tickets/options. Or, if this is a mailing list, you can unsubscribe from the mailing list.
