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at4809_port.h
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at4809_port.h
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/****************************************************************************
** ORANGEBOT PROJECT
*****************************************************************************
** AT MEGA PORT
** Port configuration macros specific to AtMega uC For AVR studio 7
*****************************************************************************
** Author: Orso Eric
** Creation Date:
** Last Edit Date:
** Revision: 1
** Version:
****************************************************************************/
/**********************************************************************************
** PORT REGISTERS
***********************************************************************************
** PORTx.DIR | enable the output drive for each individual pin | 0=input | 1=output
** PORTx.OUT | Output value
** PORTx.IN | Input value
** PORTx.PORTCTRL | SRL='1' enables the slew rate limiter for all output in the port
** PORTx.PINyCTRL | INVEN='1' invert input and all output
** | PULLUPEN='1' enable pull up resistor
** | ISC=0 INTDISABLE Interrupt disabled but input buffer enabled
** | ISC=1 BOTHEDGES Interrupt enabled with sense on both edges
** | ISC=2 RISING Interrupt enabled with sense on rising edge
** | ISC=3 FALLING Interrupt enabled with sense on falling edge
** | ISC=4 INPUT_DISABLE Interrupt and digital input buffer disabled
** | ISC=5 LEVEL Interrupt enabled with sense on low level
** PORTx.OUTSET | '1' will set to one the individual out of the pin
** PORTx.OUTCLR | '1' will set to zero the individual out of the pin
** PORTx.OUTTGL | '1' will toggle individual out of the pin
** PORTx.DIRSET | '1' will set to the individual pin to output
** PORTx.DIRCLR | '1' will set to the individual pin to input
** PORTx.DIRTGL | '1' will toggle the input output state of the individual pin
**********************************************************************************/
/**********************************************************************************
** LOGS
***********************************************************************************
**
**********************************************************************************/
#ifndef AT4809_PORT_H
//header environment variable, is used to detect multiple inclusion
//of the same header, and can be used in the c file to detect the
//included library
#define AT4809_PORT_H
/****************************************************************************
** ENVROIMENT VARIABILE
****************************************************************************/
/****************************************************************************
** GLOBAL INCLUDE
** TIPS: you can put here the library common to all source file
****************************************************************************/
/****************************************************************************
** ENUM
****************************************************************************/
//! Possible pin configurations
#define PIN_Z (uint8_t)0x00
#define PIN_R (uint8_t)0x01
#define PIN_H (uint8_t)0x02
#define PIN_L (uint8_t)0x03
#define PIN_SR (uint8_t)0x04
//Invert bit
#define PIN_INV (uint8_t)0x08
//Interrupt both edges
#define PIN_IE (uint8_t)0x10
//Interrupt rising edge
#define PIN_IR (uint8_t)0x20
//Interrupt falling edge
#define PIN_IF (uint8_t)0x30
//Interrupt low level
#define PIN_IL (uint8_t)0x50
/****************************************************************************
** MACRO
*****************************************************************************
** Those macros setup pin in a port in one of four states
** 'Z' | Hi Impedance Input
** 'R' | Input with pull-up resistance
** 'L' | Output Low
** 'H' | Output Hi
****************************************************************************/
//return true if DIR is out
#define COND_OUT( pin ) \
( ((pin) == PIN_L) || ((pin) == PIN_H) )
//return true if OUT is high
#define COND_HIGH( pin ) \
((pin) == PIN_H)
//return true if pull up should be active
#define COND_PULL( pin ) \
((pin) == PIN_R)
//return true if slew rate limiter is active
#define COND_SLEW_RATE( pin ) \
((pin) == PIN_SR)
//return true if pin inverter should be active
#define COND_INV( pin ) \
((pin) == PIN_INV)
#define COND_INT( pin ) \
( ((pin) == PIN_IE) | ((pin) == PIN_IR) | ((pin) == PIN_IF) | ((pin) == PIN_IL) )
//Configure direction register of the port
#define PORT_CONFIG_DIR( PORTx, pin0, pin1, pin2, pin3, pin4, pin5, pin6, pin7 ) \
PORTx.DIR = SHL( COND_OUT( pin0 ), 0) | \
SHL( COND_OUT( pin1 ), 1) | \
SHL( COND_OUT( pin2 ), 2) | \
SHL( COND_OUT( pin3 ), 3) | \
SHL( COND_OUT( pin4 ), 4) | \
SHL( COND_OUT( pin5 ), 5) | \
SHL( COND_OUT( pin6 ), 6) | \
SHL( COND_OUT( pin7 ), 7)
//Configure output register of the port
#define PORT_CONFIG_OUT( PORTx, pin0, pin1, pin2, pin3, pin4, pin5, pin6, pin7 ) \
PORTx.OUT = SHL( COND_HIGH( pin0 ), 0) | \
SHL( COND_HIGH( pin1 ), 1) | \
SHL( COND_HIGH( pin2 ), 2) | \
SHL( COND_HIGH( pin3 ), 3) | \
SHL( COND_HIGH( pin4 ), 4) | \
SHL( COND_HIGH( pin5 ), 5) | \
SHL( COND_HIGH( pin6 ), 6) | \
SHL( COND_HIGH( pin7 ), 7)
//Configure the slew rate limiter of the output
#define PORT_CONFIG_SR( PORTx, pin0, pin1, pin2, pin3, pin4, pin5, pin6, pin7 ) \
PORTx.PORTCTRL = SHL( COND_SLEW_RATE( pin0 ), 0) | \
SHL( COND_SLEW_RATE( pin1 ), 1) | \
SHL( COND_SLEW_RATE( pin2 ), 2) | \
SHL( COND_SLEW_RATE( pin3 ), 3) | \
SHL( COND_SLEW_RATE( pin4 ), 4) | \
SHL( COND_SLEW_RATE( pin5 ), 5) | \
SHL( COND_SLEW_RATE( pin6 ), 6) | \
SHL( COND_SLEW_RATE( pin7 ), 7)
#define PIN_CONFIG_HW( PINyCTRL, pin_config ) \
PINyCTRL = SHL(COND_INV( pin_config ), 7) | SHL(COND_PULL( pin_config ), 3) | (0x07 & SHR(COND_INT( pin_config ), 4))
//Configure individual pin hardware
#define PORT_CONFIG_PINHW( PORTx, pin0, pin1, pin2, pin3, pin4, pin5, pin6, pin7 ) \
PIN_CONFIG_HW( PORTx.PIN0CTRL, pin0 ); \
PIN_CONFIG_HW( PORTx.PIN1CTRL, pin1 ); \
PIN_CONFIG_HW( PORTx.PIN2CTRL, pin2 ); \
PIN_CONFIG_HW( PORTx.PIN3CTRL, pin3 ); \
PIN_CONFIG_HW( PORTx.PIN4CTRL, pin4 ); \
PIN_CONFIG_HW( PORTx.PIN5CTRL, pin5 ); \
PIN_CONFIG_HW( PORTx.PIN6CTRL, pin6 ); \
PIN_CONFIG_HW( PORTx.PIN7CTRL, pin7 )
//Configure an hardware port
#define PORT_CONFIG( PORTx, pin0, pin1, pin2, pin3, pin4, pin5, pin6, pin7 ) \
PORT_CONFIG_DIR( PORTx, pin0, pin1, pin2, pin3, pin4, pin5, pin6, pin7 ); \
PORT_CONFIG_OUT( PORTx, pin0, pin1, pin2, pin3, pin4, pin5, pin6, pin7 ); \
PORT_CONFIG_SR( PORTx, pin0, pin1, pin2, pin3, pin4, pin5, pin6, pin7 ); \
PORT_CONFIG_PINHW( PORTx, pin0, pin1, pin2, pin3, pin4, pin5, pin6, pin7 )
//those macros configure the single port
#ifdef PORTA
#define PORT_A_CONFIG( pin0, pin1, pin2, pin3, pin4, pin5, pin6, pin7 ) \
PORT_CONFIG( PORTA, pin0, pin1, pin2, pin3, pin4, pin5, pin6, pin7)
#endif
//those macros configure the single port
#ifdef PORTB
#define PORT_B_CONFIG( pin0, pin1, pin2, pin3, pin4, pin5, pin6, pin7 ) \
PORT_CONFIG( PORTB, pin0, pin1, pin2, pin3, pin4, pin5, pin6, pin7)
#endif
//those macros configure the single port
#ifdef PORTC
#define PORT_C_CONFIG( pin0, pin1, pin2, pin3, pin4, pin5, pin6, pin7 ) \
PORT_CONFIG( PORTC, pin0, pin1, pin2, pin3, pin4, pin5, pin6, pin7)
#endif
//those macros configure the single port
#ifdef PORTD
#define PORT_D_CONFIG( pin0, pin1, pin2, pin3, pin4, pin5, pin6, pin7 ) \
PORT_CONFIG( PORTD, pin0, pin1, pin2, pin3, pin4, pin5, pin6, pin7)
#endif
//those macros configure the single port
#ifdef PORTE
#define PORT_E_CONFIG( pin0, pin1, pin2, pin3, pin4, pin5, pin6, pin7 ) \
PORT_CONFIG( PORTE, pin0, pin1, pin2, pin3, pin4, pin5, pin6, pin7)
#endif
//those macros configure the single port
#ifdef PORTF
#define PORT_F_CONFIG( pin0, pin1, pin2, pin3, pin4, pin5, pin6, pin7 ) \
PORT_CONFIG( PORTF, pin0, pin1, pin2, pin3, pin4, pin5, pin6, pin7)
#endif
///--------------------------------------------------------------------------
/// UART
///--------------------------------------------------------------------------
// UART specific macros
//return true if the uart 0 is ready to transmit data
#define UART0_TX_READY() \
(UCSR0A & MASK(UDRE0))
#else
#warning "multiple inclusion of the header file at_mega_port.h"
#endif