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author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2018-04-19 06:35:52 +0200 |
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committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2018-04-20 09:57:01 +0200 |
commit | 7632906fc290b652416ab59eb5fb49356c064ed6 (patch) | |
tree | ac036b1f95637e044e10138ceea8d2b56d80ec97 /bsps/arm/atsam/clock/systick-freq.c | |
parent | bsps: Move bspsmpgetcurrentprocessor.c to bsps (diff) | |
download | rtems-7632906fc290b652416ab59eb5fb49356c064ed6.tar.bz2 |
bsps: Move clock drivers to bsps
This patch is a part of the BSP source reorganization.
Update #3285.
Diffstat (limited to 'bsps/arm/atsam/clock/systick-freq.c')
-rw-r--r-- | bsps/arm/atsam/clock/systick-freq.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/bsps/arm/atsam/clock/systick-freq.c b/bsps/arm/atsam/clock/systick-freq.c new file mode 100644 index 0000000000..060fa17c1e --- /dev/null +++ b/bsps/arm/atsam/clock/systick-freq.c @@ -0,0 +1,31 @@ +/* + * Copyright (c) 2016 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Dornierstr. 4 + * 82178 Puchheim + * Germany + * <rtems@embedded-brains.de> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#include <bsp.h> + +#include <chip.h> + +uint32_t atsam_systick_frequency(void) +{ + uint32_t mdiv = (PMC->PMC_MCKR & PMC_MCKR_MDIV_Msk) >> PMC_MCKR_MDIV_Pos; + uint32_t fclk; + + if (mdiv == 3) { + fclk = BOARD_MCK * mdiv; + } else { + fclk = BOARD_MCK * (1 << mdiv); + } + + return fclk; +} |