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(Arduino Due/SAM) Removed macro digitalPinToTimer and added comment for portModeRegister #2319

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Merged
merged 1 commit into from
Sep 26, 2014
Merged

(Arduino Due/SAM) Removed macro digitalPinToTimer and added comment for portModeRegister #2319

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20 changes: 18 additions & 2 deletions hardware/arduino/sam/variants/arduino_due_x/variant.h
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Original file line number Diff line number Diff line change
Expand Up @@ -61,13 +61,29 @@ extern "C"{

#define digitalPinToPort(P) ( g_APinDescription[P].pPort )
#define digitalPinToBitMask(P) ( g_APinDescription[P].ulPin )
#define digitalPinToTimer(P) ( )
//#define analogInPinToBit(P) ( )
#define portOutputRegister(port) ( &(port->PIO_ODSR) )
#define portInputRegister(port) ( &(port->PIO_PDSR) )
//#define portModeRegister(P) ( )
#define digitalPinHasPWM(P) ( g_APinDescription[P].ulPWMChannel != NOT_ON_PWM || g_APinDescription[P].ulTCChannel != NOT_ON_TIMER )

/*
* portModeRegister(..) should return a register to set pin mode
* INPUT or OUTPUT by setting the corresponding bit to 0 or 1.
* Unfortunately on SAM architecture the PIO_OSR register is
* read-only and can be set only through the enable/disable registers
* pair PIO_OER/PIO_ODR.
*/
// #define portModeRegister(port) ( &(port->PIO_OSR) )

/*
* digitalPinToTimer(..) is AVR-specific and is not defined for SAM
* architecture. If you need to check if a pin supports PWM you must
* use digitalPinHasPWM(..).
*
* https://github.com/arduino/Arduino/issues/1833
*/
// #define digitalPinToTimer(P)

// Interrupts
#define digitalPinToInterrupt(p) ((p) < NUM_DIGITAL_PINS ? (p) : -1)

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