Changeset 71c5552f in rtems

Timestamp:

03/12/18 15:43:28 (5 years ago)

Author:

Christian Mauderer <christian.mauderer@…>

Branches:

5, master

Children:

7c39cab

Parents:

7633f5b

git-author:

Christian Mauderer <christian.mauderer@…> (03/12/18 15:43:28)

git-committer:

Christian Mauderer <christian.mauderer@…> (03/13/18 14:04:28)

Message:

bsp/atsam: Allow setting the drive strength.

This adds a simple function for setting the PIO drive strength.

Files:

• bsps/arm/atsam/include/libchip/include/pio.h (modified) (1 diff)
• c/src/lib/libbsp/arm/atsam/libraries/libchip/source/pio.c (modified) (1 diff)

bsps/arm/atsam/include/libchip/include/pio.h

@@ -210 +210 @@
 
 extern uint32_t PIO_GetWriteProtectViolationInfo(const Pin *pin);
+
+extern void PIO_SetDriveStrength(const Pin *pin, uint8_t strength);
 #ifdef __cplusplus
 }

c/src/lib/libbsp/arm/atsam/libraries/libchip/source/pio.c

@@ -482 +482 @@
 }
 
+/**
+ * \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);
+        }
+}