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| author | Giovanni Di Sirio <gdisirio@gmail.com> | 2017-02-23 10:06:45 +0000 |
|---|---|---|
| committer | Giovanni Di Sirio <gdisirio@gmail.com> | 2017-02-23 10:06:45 +0000 |
| commit | 3c720a33274170db6e6c99a612a936bb2e094484 (patch) | |
| tree | dab381b417880e90a25b346aa47be50d1c364c23 | |
| parent | 4140ae5815ee4b963d0cf2ae82d545567abd7121 (diff) | |
| download | ChibiOS-3c720a33274170db6e6c99a612a936bb2e094484.tar.gz ChibiOS-3c720a33274170db6e6c99a612a936bb2e094484.tar.bz2 ChibiOS-3c720a33274170db6e6c99a612a936bb2e094484.zip | |
LSE bypass implemented on STM32F1xx.
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@10110 35acf78f-673a-0410-8e92-d51de3d6d3f4
| -rw-r--r-- | os/hal/ports/STM32/STM32F1xx/hal_lld.c | 6 | ||||
| -rw-r--r-- | os/hal/ports/STM32/STM32F1xx/hal_lld.h | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/os/hal/ports/STM32/STM32F1xx/hal_lld.c b/os/hal/ports/STM32/STM32F1xx/hal_lld.c index 950eb3b5a..3893d6e70 100644 --- a/os/hal/ports/STM32/STM32F1xx/hal_lld.c +++ b/os/hal/ports/STM32/STM32F1xx/hal_lld.c @@ -66,7 +66,13 @@ static void hal_lld_backup_domain_init(void) { /* If enabled then the LSE is started.*/
#if STM32_LSE_ENABLED
+#if defined(STM32_LSE_BYPASS)
+ /* LSE Bypass.*/
+ RCC->BDCR |= RCC_BDCR_LSEON | RCC_BDCR_LSEBYP;
+#else
+ /* No LSE Bypass.*/
RCC->BDCR |= RCC_BDCR_LSEON;
+#endif
while ((RCC->BDCR & RCC_BDCR_LSERDY) == 0)
; /* Waits until LSE is stable. */
#endif /* STM32_LSE_ENABLED */
diff --git a/os/hal/ports/STM32/STM32F1xx/hal_lld.h b/os/hal/ports/STM32/STM32F1xx/hal_lld.h index fff3c607b..32a63c875 100644 --- a/os/hal/ports/STM32/STM32F1xx/hal_lld.h +++ b/os/hal/ports/STM32/STM32F1xx/hal_lld.h @@ -20,6 +20,7 @@ * @pre This module requires the following macros to be defined in the
* @p board.h file:
* - STM32_LSECLK.
+ * - STM32_LSE_BYPASS (optionally).
* - STM32_HSECLK.
* - STM32_HSE_BYPASS (optionally).
* .
|