From 71c5552f9a7c2fbe27b860fafc295427955f25a1 Mon Sep 17 00:00:00 2001 From: Christian Mauderer Date: Mon, 12 Mar 2018 16:43:28 +0100 Subject: bsp/atsam: Allow setting the drive strength. This adds a simple function for setting the PIO drive strength. --- bsps/arm/atsam/include/libchip/include/pio.h | 2 ++ .../lib/libbsp/arm/atsam/libraries/libchip/source/pio.c | 16 ++++++++++++++++ 2 files changed, 18 insertions(+) diff --git a/bsps/arm/atsam/include/libchip/include/pio.h b/bsps/arm/atsam/include/libchip/include/pio.h index 6cf463d1ec..1e24b7321c 100644 --- a/bsps/arm/atsam/include/libchip/include/pio.h +++ b/bsps/arm/atsam/include/libchip/include/pio.h @@ -209,6 +209,8 @@ extern void PIO_DisableWriteProtect(const Pin *pin); extern void PIO_SetPinType(Pin *pin, uint8_t pinType); extern uint32_t PIO_GetWriteProtectViolationInfo(const Pin *pin); + +extern void PIO_SetDriveStrength(const Pin *pin, uint8_t strength); #ifdef __cplusplus } #endif diff --git a/c/src/lib/libbsp/arm/atsam/libraries/libchip/source/pio.c b/c/src/lib/libbsp/arm/atsam/libraries/libchip/source/pio.c index e39825dfa5..d6df587464 100644 --- a/c/src/lib/libbsp/arm/atsam/libraries/libchip/source/pio.c +++ b/c/src/lib/libbsp/arm/atsam/libraries/libchip/source/pio.c @@ -481,3 +481,19 @@ void PIO_SetPinType(Pin *pin, uint8_t pinType) pin->type = pinType; } +/** + * \brief Set the drive strength of the pin. + * + * \param pin Pointer to a Pin instance describing one or more pins. + * \param strength 0 for low drive strength or 1 for high drive strength. + */ +void PIO_SetDriveStrength(const Pin *pin, uint8_t strength) +{ + Pio *pio = pin->pio; + + if (strength) { + pio->PIO_DRIVER |= pin->mask; + } else { + pio->PIO_DRIVER &= ~(pin->mask); + } +} -- cgit v1.2.3