Arduino DUE Base Functionality

[dimitri]

Hello all,

On the DUE, does anyone know where the definitions for RoReg, WoReg, RwReg are located?

For example, if you go to component_tc.h, you will see:

typedef struct {
  RwReg      TC_CCR;        /**< \brief (TcChannel Offset: 0x0) Channel Control Register */
  RwReg      TC_CMR;        /**< \brief (TcChannel Offset: 0x4) Channel Mode Register */
  RwReg      TC_SMMR;       /**< \brief (TcChannel Offset: 0x8) Stepper Motor Mode Register */
  RoReg      Reserved1[1];
  RwReg      TC_CV;         /**< \brief (TcChannel Offset: 0x10) Counter Value */
  RwReg      TC_RA;         /**< \brief (TcChannel Offset: 0x14) Register A */
  RwReg      TC_RB;         /**< \brief (TcChannel Offset: 0x18) Register B */
  RwReg      TC_RC;         /**< \brief (TcChannel Offset: 0x1C) Register C */
  RwReg      TC_SR;         /**< \brief (TcChannel Offset: 0x20) Status Register */
  RwReg      TC_IER;        /**< \brief (TcChannel Offset: 0x24) Interrupt Enable Register */
  RwReg      TC_IDR;        /**< \brief (TcChannel Offset: 0x28) Interrupt Disable Register */
  RwReg      TC_IMR;        /**< \brief (TcChannel Offset: 0x2C) Interrupt Mask Register */
  RoReg      Reserved2[4];
} TcChannel;

However no where in the file do I see a #include <xxxxx.h> that would define how this works.


Thanks

[khoih-prog]

It's defined in sam3x8e.h#L46-L55 or similar files as simple as

#if !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__))
#include <stdint.h>
#ifndef __cplusplus
typedef volatile const uint32_t RoReg; /**< Read only 32-bit register (volatile const unsigned int) */
#else
typedef volatile       uint32_t RoReg; /**< Read only 32-bit register (volatile const unsigned int) */
#endif
typedef volatile       uint32_t WoReg; /**< Write only 32-bit register (volatile unsigned int) */
typedef volatile       uint32_t RwReg; /**< Read-Write 32-bit register (volatile unsigned int) */
#endif