Hi I am using MCB2140 kit in which there are two UARTs. Now whenever i am connecting UART0 to PC for hyperterminal and trying to flash it through JTAG..it is giving error that "JTAG Communication Error".. Because of this i can't use UART0 instead of that everytime i have to use UART1..Kindly provide some solution to this problem..Is there any configuration required?
Nehal; Please refer to the LPC2140 Manual on Jumper configuration. You will note there is a Jumper(J10 I think) that is a DTR/RST function. This is used when you need to download flash throught UART0 but must be removed to use both UART0 as a standard com port and JTAG for debugging. Any time that you plug in a PC com port, the default DTR setting will force the eval board into reset. You can also refer to the schematic for the LPC2140 board on the Keil web site to identify the DTR/RST jumper. Bradford