rpi.h

#ifndef _SYSIO_RPI_H_
#define _SYSIO_RPI_H_
#include <sysio/defs.h>
#ifdef __cplusplus
  extern "C" {
#endif
/* ========================================================================== */

typedef enum  {
  eRpiModelA,
  eRpiModelB,
  eRpiModelAPlus,
  eRpiModelBPlus,
  eRpiModelComputeModule,
  eRpiModel2B,
  eRpiModelZero,
  eRpiModel3B,
  eRpiModelZeroW,
  eRpiModelComputeModule3,
  eRpiModelUnknown = -1
} eRpiModel;

typedef enum  {
  eRpiMcuBcm2708,
  eRpiMcuBcm2709,
  eRpiMcuBcm2710,
  eRpiMcuUnknown = -1
} eRpiMcu;

typedef struct xRpi {
  int iRev; 
  eRpiModel eModel; 
  int iGpioRev; 
  eRpiMcu eMcu; 
  int iMemMB; 
  int iPcbMajor; 
  int iPcbMinor; 
  const char * sManufacturer; 
} xRpi;

/* internal public functions ================================================ */

int iRpiRev (void);

const xRpi * pxRpiInfo (void);
/*
 */
const char * sRpiModelToStr (eRpiModel eModel);

const char * sRpiMcuToStr (eRpiMcu eMcu);


/* constants ================================================================ */
#define GPIO_GEN0  0
#define GPIO_GEN1  1
#define GPIO_GEN2  2
#define GPIO_GEN3  3
#define GPIO_GEN4  4
#define GPIO_GEN5  5
#define GPIO_GEN6  6
#define GPIO_GCLK  7

#define I2C_SDA   8
#define I2C_SCL   9
#define I2C_SDA1  8
#define I2C_SCL1  9
#define I2C_SDA0  30
#define I2C_SCL0  31

#define SPI_CE0_N 10
#define SPI_CE1_N 11
#define SPI_MOSI  12
#define SPI_MISO  13
#define SPI_SCLK  14

#define UART_TXD  15
#define UART_RXD  16
#define UART_TXD0 15
#define UART_RXD0 16

// Models A & B PCB V 2.0 only
#define GPIO_GEN7  17
#define GPIO_GEN8  18
#define GPIO_GEN9  19
#define GPIO_GEN10 20

// Models A+, B+, 2B, 3B, Zero only
#define GPIO_GEN11 21
#define LAN_RUN    22
#define GPIO_GEN12 23
#define GPIO_GEN13 24
#define GPIO_GEN14 25
#define GPIO_GEN15 26
#define STATUS_LED 27
#define GPIO_GEN17 28
#define GPIO_GEN18 29

#define GPIO17  0
#define GPIO18  1
#define GPIO27  2 // Models A & B PCB V2.0, A+, B+, 2B, 3B, Zero 
#define GPIO22  3
#define GPIO23  4
#define GPIO24  5
#define GPIO25  6
#define GPIO4   7

#define GPIO2   8  // Models A & B PCB V2.0, A+, B+, 2B, 3B, Zero 
#define GPIO3   9  // Models A & B PCB V2.0, A+, B+, 2B, 3B, Zero 
#define GPIO0   30
#define GPIO1   31

#define GPIO8   10
#define GPIO7   11
#define GPIO10  12
#define GPIO9   13
#define GPIO11  14

#define GPIO14  15
#define GPIO15  16

// Models A & B PCB V 2.0 only
#define GPIO28  17
#define GPIO29  18
#define GPIO30  19
#define GPIO31  20

// Models A+, B+, 2B, 3B, Zero only
#define GPIO5   21
#define GPIO6   22
#define GPIO13  23
#define GPIO19  24
#define GPIO26  25
#define GPIO12  26
#define GPIO16  27
#define GPIO20  28
#define GPIO21  29

#if defined(__DOXYGEN__)

static inline  unsigned long ulRpiIoBase(void);

#else /* ! defined(__DOXYGEN__) */
// -----------------------------------------------------------------------------
/*
  GPIO_PADS     = RASPBERRY_PI_PERI_BASE + 0x00100000 ;
  GPIO_TIMER    = RASPBERRY_PI_PERI_BASE + 0x0000B000 ;
 */
/* bcm2708 internals ======================================================== */
#define BCM2708_IO_BASE    (0x20000000)
#define BCM2709_IO_BASE    (0x3F000000)
#define BCM270X_PAGE_SIZE  (4*1024)
#define BCM270X_BLOCK_SIZE (4*1024)

// -----------------------------------------------------------------------------
INLINE unsigned long
ulRpiIoBase(void) {
  
  return (pxRpiInfo()->eMcu == eRpiMcuBcm2708) ? BCM2708_IO_BASE : BCM2709_IO_BASE;
}
#endif /* !defined(__DOXYGEN__) */

/* ========================================================================== */
#ifdef __cplusplus
  }
#endif
#endif /*_SYSIO_RPI_H_ defined */