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| author | Fabio Utzig <utzig@utzig.org> | 2016-02-15 18:12:37 -0200 |
|---|---|---|
| committer | Fabio Utzig <utzig@utzig.org> | 2016-02-15 18:12:37 -0200 |
| commit | fac5a0d26c0d5a13d0847984ee96103441fab6cd (patch) | |
| tree | 0a6898ee4bea921fdf53aaa48c0d9b7a6825cd82 /os/hal/ports/NRF51/NRF51822/hal_lld.h | |
| parent | 97bf343a8b3cea8618965d93668ae98915088208 (diff) | |
| parent | 5ef170def22f5327f3c8252799e9f499eb50e5a6 (diff) | |
| download | ChibiOS-Contrib-fac5a0d26c0d5a13d0847984ee96103441fab6cd.tar.gz ChibiOS-Contrib-fac5a0d26c0d5a13d0847984ee96103441fab6cd.tar.bz2 ChibiOS-Contrib-fac5a0d26c0d5a13d0847984ee96103441fab6cd.zip | |
Merge pull request #33 from sdalu/rtc
RTC for System Ticks
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. */ /*===========================================================================*/ |