CONFIG_UART_INTERRUPT_DRIVEN=y CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=48000000 CONFIG_GPIO=y CONFIG_BUILD_OUTPUT_HEX=y # Since the board has little memory (32k), stack sizes are lowered # so that the application has more RAM for itself. CONFIG_MAIN_STACK_SIZE=512 CONFIG_ISR_STACK_SIZE=768 CONFIG_CONSOLE=y CONFIG_UART_CONSOLE=y CONFIG_SERIAL=y CONFIG_CLOCK_CONTROL_LPC11U6X_ENABLE_SRAM1=y CONFIG_CLOCK_CONTROL_LPC11U6X_ENABLE_USB_RAM=y CONFIG_CLOCK_CONTROL_LPC11U6X_PLL_SRC_SYSOSC=y