diff options
Diffstat (limited to 'c/src/lib/libbsp/arm/atsam/startup/power-clock.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/atsam/startup/power-clock.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/arm/atsam/startup/power-clock.c b/c/src/lib/libbsp/arm/atsam/startup/power-clock.c new file mode 100644 index 0000000000..e04933285e --- /dev/null +++ b/c/src/lib/libbsp/arm/atsam/startup/power-clock.c @@ -0,0 +1,44 @@ +/* + * 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 <bsp/power.h> +#include <bsp/irq.h> + +#include <libchip/chip.h> + +#include <rtems/score/armv7m.h> + +void atsam_power_handler_clock_driver( + const atsam_power_control *control, + atsam_power_state state +) +{ + volatile ARMV7M_Systick *systick = _ARMV7M_Systick; + + (void) control; + + switch (state) { + case ATSAM_POWER_ON: + systick->csr = ARMV7M_SYSTICK_CSR_ENABLE | + ARMV7M_SYSTICK_CSR_TICKINT | + ARMV7M_SYSTICK_CSR_CLKSOURCE; + break; + case ATSAM_POWER_OFF: + systick->csr = 0; + break; + default: + break; + } +} |