diff options
Diffstat (limited to 'nuttx/arch/Kconfig')
| -rw-r--r-- | nuttx/arch/Kconfig | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/nuttx/arch/Kconfig b/nuttx/arch/Kconfig index c7771e9c8..44c030fe0 100644 --- a/nuttx/arch/Kconfig +++ b/nuttx/arch/Kconfig @@ -303,12 +303,22 @@ config ARCH_RAMFUNCS comment "Board Settings" config BOARD_LOOPSPERMSEC - int "Loops per millisecond" - help - Must be calibrated for correct operation of delay loops. - You simply use a stop watch to measure the 100 second delay - then adjust CONFIG_BOARD_LOOPSPERMSEC until it is actually - is 100 seconds. + int "Delay loops per millisecond" + default 5000 + ---help--- + Simple delay loops are used by some logic, especially during boot-up, + driver initialization. These delay loops must be calibrated for each + board in order to assure accurate timing by the delay loops. + +config ARCH_CALIBRATION + bool "Calibrate delay loop" + default n + ---help--- + Enables some built in instrumentation that causes a 100 second delay + during boot-up. This 100 second delay serves no purpose other than it + allows you to calibratre BOARD_LOOPSPERMSEC. You simply use a stop + watch to measure the actual delay then adjust BOARD_LOOPSPERMSEC until + the actual delay is 100 seconds. config DRAM_START hex "DRAM start physical address" |