Need advice porting Arduino code to Energia

[dolence 0]

Hello everybody!

 

My name is Willian and I'm coming from AVR microcontrollers. I confess I never had interest in Arduino in the past, always used avr-gcc/atmel studio.  I'm trying to port Arduino code (3D printer controller) to Energia, without success.

Since Arduino seens to be really slow, original developer used fastio macros to gain some speed. Those macros seens to not be compatible with Energia:

'PINB5' was not declared in this scope Marlin_main.cpp /Marlin line
2113 C/C++ Problem
'PORTB' was not declared in this scope Marlin_main.cpp /Marlin line
2126 C/C++ Problem

Macro definitions are as follows:

#ifndef	_FASTIO_ARDUINO_H
#define	_FASTIO_ARDUINO_H

//#include <avr/io.h>

/*
  utility functions
*/

#ifndef MASK
/// MASKING- returns \f$2^PIN\f$
#define MASK(PIN)  (1 << PIN)
#endif

/*
  magic I/O routines
  now you can simply SET_OUTPUT(STEP); WRITE(STEP, 1); WRITE(STEP, 0);
*/

/// Read a pin
#define _READ(IO) ((bool)(DIO ## IO ## _RPORT & MASK(DIO ## IO ## _PIN)))
/// write to a pin
// On some boards pins > 0x100 are used. These are not converted to atomic actions. An critical section is needed.

#define _WRITE_NC(IO, v)  do { if (v) {DIO ##  IO ## _WPORT |= MASK(DIO ## IO ## _PIN); } else {DIO ##  IO ## _WPORT &= ~MASK(DIO ## IO ## _PIN); }; } while (0)

#define _WRITE_C(IO, v)   do { if (v) { \
                                         CRITICAL_SECTION_START; \
                                         {DIO ##  IO ## _WPORT |= MASK(DIO ## IO ## _PIN); }\
                                         CRITICAL_SECTION_END; \
                                       }\
                                       else {\
                                         CRITICAL_SECTION_START; \
                                         {DIO ##  IO ## _WPORT &= ~MASK(DIO ## IO ## _PIN); }\
                                         CRITICAL_SECTION_END; \
                                       }\
                                     }\
                                     while (0)

#define _WRITE(IO, v)  do {  if (&(DIO ##  IO ## _RPORT) >= (uint8_t *)0x100) {_WRITE_C(IO, v); } else {_WRITE_NC(IO, v); }; } while (0)

/// toggle a pin
#define _TOGGLE(IO)  do {DIO ##  IO ## _RPORT = MASK(DIO ## IO ## _PIN); } while (0)

/// set pin as input
#define	_SET_INPUT(IO) do {DIO ##  IO ## _DDR &= ~MASK(DIO ## IO ## _PIN); } while (0)
/// set pin as output
#define	_SET_OUTPUT(IO) do {DIO ##  IO ## _DDR |=  MASK(DIO ## IO ## _PIN); } while (0)

/// check if pin is an input
#define	_GET_INPUT(IO)  ((DIO ## IO ## _DDR & MASK(DIO ## IO ## _PIN)) == 0)
/// check if pin is an output
#define	_GET_OUTPUT(IO)  ((DIO ## IO ## _DDR & MASK(DIO ## IO ## _PIN)) != 0)

/// check if pin is an timer
#define	_GET_TIMER(IO)  ((DIO ## IO ## _PWM)

//  why double up on these macros? see http://gcc.gnu.org/onlinedocs/cpp/Stringification.html

/// Read a pin wrapper
#define READ(IO)  _READ(IO)
/// Write to a pin wrapper
#define WRITE(IO, v)  _WRITE(IO, v)

/// toggle a pin wrapper
#define TOGGLE(IO)  _TOGGLE(IO)

/// set pin as input wrapper
#define SET_INPUT(IO)  _SET_INPUT(IO)
/// set pin as output wrapper
#define SET_OUTPUT(IO)  _SET_OUTPUT(IO)

/// check if pin is an input wrapper
#define GET_INPUT(IO)  _GET_INPUT(IO)
/// check if pin is an output wrapper
#define GET_OUTPUT(IO)  _GET_OUTPUT(IO)

/// check if pin is an timer wrapper
#define GET_TIMER(IO)  _GET_TIMER(IO)

/*
	ports and functions

	added as necessary or if I feel like it- not a comprehensive list!
*/

Any help would be great.

Thanks in advance!

[Rickta59 589]

PINB5 is a reference to an AVR port peripheral, you need to use the msp430 peripherals names.

 

Port1 on the msp430 would be Special Function Registers such as:

 

P1DIR - to set direction
P1OUT - to set an output bit

P1IN - to read an input bit

 

P1DIR |= BIT5; // set P1.5 direction to output,  default is input

P1OUT |= BIT5; // set value of P1.5 to high

P1OUT &= ~BIT5; // set value of P1.5 to low

if ( P1IN & BIT5) { P1.5 is high do something }

 

-rick

[dolence 0]

Rick, thank you very much! Late in the night, the obvious becomes not so obvious. 

I should have said that I'm using an LM4F120. I think SFR differs slightly from MSP430.

This night I will try it again!

 

Thank you again!