My practical experience (20+ designed) with the JRST pin is you should leave it unconnected or pulled.
On 30/01/2016 4:33 PM, David Rowe wrote: > Hi Stuart, > > The link seems to refer to flashing via STLINK - the 3 pin debug connector. > > I have used STLINK to flash SM1000s many times during development - > using just the 3 pins on CN1. This include 405 and 407 devices. I used > a Discovery Board as the emulator "pod". > > I'm not familiar with the nJRST pin on the uC, can you pls describe > exactly what connection you would like to see (i.e. pin numbers, where > the net would be routed to)? > > We have provision for a reset button SW5 (nRST pin 14 on the uC) on the > SM1000 which I found handy during development when I was flashing via > STLINK. > > I have found DFU mode comes up immediately every time, by holding PTT > down as the SM1000 is switched on. I just tried again on a new SM1000 > and 5/5 times on first press. Perhaps you have a hardware fault? > Cables? Contact me off list if you think its the SM1000 hardware. > > - David > > On 30/01/16 14:41, Stuart Longland wrote: >> Hi all, >> >> Here's something we should add to the PCB for the next SM1000 revision, >> a pin for nJRST. >> >> https://sourceforge.net/p/openocd/mailman/message/32108017/ >> >> Presently, due to that erratum, the only way to flash a SM1000 is using >> dfu-util, and I'm finding that it might take as many as 5 or 10 attempts >> of power cycling and pressing PTT in to get it into DFU mode. >> > ------------------------------------------------------------------------------ > Site24x7 APM Insight: Get Deep Visibility into Application Performance > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > Monitor end-to-end web transactions and take corrective actions now > Troubleshoot faster and improve end-user experience. Signup Now! > http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 > _______________________________________________ > Freetel-codec2 mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 > -- - Glen English RF Communications and Electronics Engineer CORTEX RF & Pacific Media Technologies Pty Ltd ABN 40 075 532 008 PO Box 5231 Lyneham ACT 2602, Australia. au mobile : +61 (0)418 975077 ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 _______________________________________________ Freetel-codec2 mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/freetel-codec2
