I have this board with LPC1768 and 32.768KHz crystal but the RTC does not work. By directing RTC clock to the CLKOUT pin I realized that there is no RTC clock so it makes sense that it's not working. But I have another prototype board (a small board) with LPC1768 and this one has no problem with the RTC.
Now I changed crystal and two capacitors (RTC required components) of the prototype board with my board and the prototype board RTC kept working even with my boards components while RTC in my board still does not work with the prototype board components so I'm sure that it's not related to the components and their quality and things like that.
I must add up that besides RTC everything else works in my board without any sort of problems.
I suspect the MCU itself.
Now what do you make out of this ?
EDIT: 1- I almost forgot to mention that the crystal is located pretty much close to the MCU so I really do not suspect the layout.
2- Also the software is the same for this two boards so firmware problems is most unlikely.