error while building the target

[venkateshjangal]

I am writing an application to my project using LPC1768 board in Keil 4.

I am using ADC & UART peripheral for this SystemCoreClock to get the clock signal for ADC & UART.

I include all the supporting files

system_LPC17xx.c file

startup file.

but still im getting an error shown below.

Build target 'Target 1'
compiling uart1.c...
uart1.c(228): error: #20: identifier "SystemCoreClock" is undefined
uart1.c(275): error: #20: identifier "SystemCoreClock" is undefined
uart1.c(320): error: #20: identifier "SystemCoreClock" is undefined

I checked all the file whether I include all the files or not. All the flies are set properly.

please solve my issues.

[soledad]

Hi,

It is necessary to build the libraries before build the project. Please follow the instructions from the below link:

https://www.nxp.com/docs/en/user-guide/LPCOpen-v2.xx-Keil-uVision4-QSG.pdf 

Have a great day,
Sol>
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------