ChibiOS/RT Architecture - Reference Manual - Guides |
I/O Ports Abstraction Layer macros, types and structures. More...
#include "pal_lld.h"
Go to the source code of this file.
Data Structures | |
struct | IOBus |
I/O bus descriptor. More... | |
Defines | |
#define | PAL_MODE_MASK 0xF |
Bits in a mode word dedicated as mode selector. | |
#define | PAL_MODE_RESET 0 |
After reset state. | |
#define | PAL_MODE_UNCONNECTED 1 |
Safe state for unconnected pads. | |
#define | PAL_MODE_INPUT 2 |
Regular input high-Z pad. | |
#define | PAL_MODE_INPUT_PULLUP 3 |
Input pad with weak pull up resistor. | |
#define | PAL_MODE_INPUT_PULLDOWN 4 |
Input pad with weak pull down resistor. | |
#define | PAL_MODE_INPUT_ANALOG 5 |
Analog input mode. | |
#define | PAL_MODE_OUTPUT_PUSHPULL 6 |
Push-pull output pad. | |
#define | PAL_MODE_OUTPUT_OPENDRAIN 7 |
Open-drain output pad. | |
#define | PAL_LOW 0 |
Logical low state. | |
#define | PAL_HIGH 1 |
Logical high state. | |
#define | PAL_PORT_BIT(n) ((ioportmask_t)(1 << (n))) |
Port bit helper macro. | |
#define | PAL_GROUP_MASK(width) ((ioportmask_t)(1 << (width)) - 1) |
Bits group mask helper. | |
#define | _IOBUS_DATA(name, port, width, offset) {port, PAL_GROUP_MASK(width), offset} |
Data part of a static I/O bus initializer. | |
#define | IOBUS_DECL(name, port, width, offset) IOBus name = _IOBUS_DATA(name, port, width, offset) |
Static I/O bus initializer. | |
#define | palInit(config) pal_lld_init(config) |
PAL subsystem initialization. | |
#define | palReadPort(port) ((void)(port), 0) |
Reads the physical I/O port states. | |
#define | palReadLatch(port) ((void)(port), 0) |
Reads the output latch. | |
#define | palWritePort(port, bits) ((void)(port), (void)(bits)) |
Writes a bits mask on a I/O port. | |
#define | palSetPort(port, bits) |
Sets a bits mask on a I/O port. | |
#define | palClearPort(port, bits) |
Clears a bits mask on a I/O port. | |
#define | palTogglePort(port, bits) |
Toggles a bits mask on a I/O port. | |
#define | palReadGroup(port, mask, offset) ((palReadPort(port) >> (offset)) & (mask)) |
Reads a group of bits. | |
#define | palWriteGroup(port, mask, offset, bits) |
Writes a group of bits. | |
#define | palSetGroupMode(port, mask, mode) |
Pads group mode setup. | |
#define | palReadPad(port, pad) ((palReadPort(port) >> (pad)) & 1) |
Reads an input pad logical state. | |
#define | palWritePad(port, pad, bit) |
Writes a logical state on an output pad. | |
#define | palSetPad(port, pad) palSetPort(port, PAL_PORT_BIT(pad)) |
Sets a pad logical state to PAL_HIGH . | |
#define | palClearPad(port, pad) palClearPort(port, PAL_PORT_BIT(pad)) |
Clears a pad logical state to PAL_LOW . | |
#define | palTogglePad(port, pad) palTogglePort(port, PAL_PORT_BIT(pad)) |
Toggles a pad logical state. | |
#define | palSetPadMode(port, pad, mode) palSetGroupMode(port, PAL_PORT_BIT(pad), mode) |
Pad mode setup. | |
Functions | |
ioportmask_t | palReadBus (IOBus *bus) |
Read from an I/O bus. | |
void | palWriteBus (IOBus *bus, ioportmask_t bits) |
Write to an I/O bus. | |
void | palSetBusMode (IOBus *bus, uint_fast8_t mode) |
Programs a bus with the specified mode. |
I/O Ports Abstraction Layer macros, types and structures.
Definition in file pal.h.