Hard reset on qn9080

talregev — Sun, 21 Jan 2018 10:38:40 GMT

By mistake I write after the m_data ORIGIN = 0x04000400, LENGTH = 0x0001FC00.

change to LENGTH = 0x0001FD114 at qn9080 DK-v1.2.

I want to perform hard reset to configure the chip to manufacture parameters (with working bootloader).

I try to flash one of the sdk example programs and the ide write me an error:

'MCUXpresso RedlinkMulti Driver v10.0 (Jun 22 2017 23:31:55 - crt_emu_cm_redlink build 272)
Reconnected to existing redlink server (PID 4294967295)
Connecting to probe 1 core 0 (server PID unknown) gave 'Ee(36). Could not connect to core.'
Connecting to probe 1 core 0 (server PID unknown) gave 'Ee(36). Could not connect to core.'
Connecting to probe 1 core 0 (server PID unknown) gave 'Ee(36). Could not connect to core.'
Server OK but no connection to probe 1 core 0 (after 3 attempts) - Ee(36). Could not connect to core.
Failed on connect: Ee(36). Could not connect to core.
No connection to chip's debug port
error closing down debug session - Em(02). MEM-AP is not selecte'

Can you help me?

Re: Hard reset on qn9080

gerardo_rodriguez — Tue, 29 May 2018 01:42:41 GMT

For future reference:

This thread was handled in an internal support request and the QN908x behavior appeared to be in a locked state where the flash can no longer be programmed.

Re: Hard reset on qn9080

edward_temple — Sat, 16 Jun 2018 17:12:15 GMT

How Do I unlock it?

Re: Hard reset on qn9080

edward_temple — Sun, 17 Jun 2018 11:59:56 GMT

I was able to unlock it using the QN908x_Programming_Tool.

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Hard reset on qn9080

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