Hi,
It appears that there is NOT such file uart_irq_util.c for the uart example in SDK based on Keil. For the uart module api function, pls refer to the uart_17xx_40xx.c, for the interrupt vector, pls refer to keil_startup_lpc175x_6x.s
How do you know that there is a file called uart_irq_util.c?
BR
XiangJun Rong
