diff options
Diffstat (limited to 'os/hal/ports/NRF51/NRF51822/hal_lld.h')
| -rw-r--r-- | os/hal/ports/NRF51/NRF51822/hal_lld.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/os/hal/ports/NRF51/NRF51822/hal_lld.h b/os/hal/ports/NRF51/NRF51822/hal_lld.h index 436789c..283c207 100644 --- a/os/hal/ports/NRF51/NRF51822/hal_lld.h +++ b/os/hal/ports/NRF51/NRF51822/hal_lld.h @@ -39,14 +39,36 @@ * @} */ +/** + * @brief Frequency valuefor the Low Frequency Clock + */ +#define NRF51_LFCLK_FREQUENCY 32768 + /*===========================================================================*/ /* Driver pre-compile time settings. */ /*===========================================================================*/ +/** + * @brief Select source of Low Frequency Clock (LFCLK) + * @details Possible values for source are: + * 0 : RC oscillator + * 1 : External cristal + * 2 : Synthetized clock from High Frequency Clock (HFCLK) + * When cristal is not available it's preferable to use the + * internal RC oscillator that synthezing the clock. + */ +#if !defined(NRF51_LFCLK_SOURCE) || defined(__DOXYGEN__) +#define NRF51_LFCLK_SOURCE 0 +#endif + /*===========================================================================*/ /* Derived constants and error checks. */ /*===========================================================================*/ +#if (NRF51_LFCLK_SOURCE < 0) || (NRF51_LFCLK_SOURCE > 2) +#error "Possible value for NRF51_LFCLK_SOURCE are 0=RC, 1=XTAL, 2=Synth" +#endif + /*===========================================================================*/ /* Driver data structures and types. */ /*===========================================================================*/ |