Print Page - LPC932 Crystal

Title: LPC932 Crystal
Post by: Uhland on September 22, 2003, 03:16:52 AM

hi Forum,
i have soldered 2 x 20pf C and an highspeed Crystal with 11.059200 to P89LPC932, but i cant get any crystal-clock signal from LPC932. Can i assemble highspeed-Clock at first time without to go in ISP-Mode?

Pin9 ----||---| GND
|
Crystal
|
Pin8 ----||---| GND

Title: Re: LPC932 Crystal
Post by: Yngwie on September 22, 2003, 05:02:28 AM

you should configure the UCFG1 register to choose what kind of clock source you'll use.

Title: Re: LPC932 Crystal
Post by: Joseph Goldburg on September 23, 2003, 05:04:54 AM

I think the default is internal RC osc in the config for the first time - otherwise how would the ISP or Flashmagic guess the baud rate?

Title: Re: LPC932 Crystal
Post by: Andy Ayre on September 23, 2003, 08:00:46 AM

The default is the internal RC oscillator, so you need to use Flash Magic to connect and then change the device configuration to external crystal.

Title: Re: LPC932 Crystal
Post by: Uhland on September 24, 2003, 07:49:30 AM

thx for help!

Title: FLASH MAGIC can't connect
Post by: emyjob on October 08, 2003, 08:23:06 PM

use flash magic 1.82 and 89LPC932 c version:
TXD,RXD connect to MAX232N,to COM232;
falsh magic config:COM1,9600,P89LPC932
choose start bootrom... from the isp menu
select the ''send break condition"option
click on start bootrom

later,I click "start",but allways say:unable connect to.....
why?

Title: Re: FLASH MAGIC can't connect
Post by: Andy Ayre on October 09, 2003, 08:25:23 AM

Did you enable the break detect in the code you first programmed into the device?

Do you have the watchdog enabled in UCFG1?

Flash Magic Forum

Archive => Old Topics => Topic started by: Uhland on September 22, 2003, 03:16:52 AM