Class: Pigpio::BscXfer

Inherits:
Object
  • Object
show all
Defined in:
ext/pigpio/pigpio.c

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.make ⇒ Object

Constructor of bsc_xfer_t as Pigpio::BscXfer class

typedef struct
{
  uint32_t control;          // Write
  int rxCnt;                 // Read only
  char rxBuf[BSC_FIFO_SIZE]; // Read only
  int txCnt;                 // Write
  char txBuf[BSC_FIFO_SIZE]; // Write
} bsc_xfer_t;



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# File 'ext/pigpio/pigpio.c', line 212

VALUE pigpio_rbst_bsc_xfer_make(VALUE self){
  VALUE obj;
  bsc_xfer_t *st;
  obj = TypedData_Make_Struct(self, bsc_xfer_t, &bsc_xfer_data_type, st);
  st->control=0;
  st->txCnt=0;
  st->rxCnt=0;
  return obj;
}

Instance Method Details

#close ⇒ Object

Close slave I/F



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# File 'ext/pigpio/pigpio.c', line 275

VALUE pigpio_rbst_bsc_xfer_close(VALUE self){
  bsc_xfer_t *st=TypedData_Get_Struct2(self,bsc_xfer_t,&bsc_xfer_data_type);
  st->control=st->control&0xfffffffcL;
  return ULONG2NUM(st->control);
}

#control ⇒ Object

Get control



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# File 'ext/pigpio/pigpio.c', line 260

VALUE pigpio_rbst_bsc_xfer_r_control(VALUE self){
  bsc_xfer_t *st=TypedData_Get_Struct2(self,bsc_xfer_t,&bsc_xfer_data_type);
  return ULONG2NUM(st->control);
}

#control=(control) ⇒ Object

Setter



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# File 'ext/pigpio/pigpio.c', line 224

VALUE pigpio_rbst_bsc_xfer_w_control(VALUE self,VALUE control){
  bsc_xfer_t *st=TypedData_Get_Struct2(self,bsc_xfer_t,&bsc_xfer_data_type);
  st->control=NUM2ULONG(control);
  return self;
}

#rxBuf ⇒ Object

Get RX buffer



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# File 'ext/pigpio/pigpio.c', line 245

VALUE pigpio_rbst_bsc_xfer_r_rxBuf(VALUE self){
  bsc_xfer_t *st=TypedData_Get_Struct2(self,bsc_xfer_t,&bsc_xfer_data_type);
  return rb_str_new(st->rxBuf,st->rxCnt);
  /*
  VALUE rxBuf=rb_str_new("",st->rxCnt);
  char *buf=StringValuePtr(rxBuf);
  for(int i=0;i<st->rxCnt;i++){
    *buf++=st->rxBuf[i];
  }
  return rxBuf;
  */
}

#stop ⇒ Object

Stop trans



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# File 'ext/pigpio/pigpio.c', line 267

VALUE pigpio_rbst_bsc_xfer_stop(VALUE self){
  bsc_xfer_t *st=TypedData_Get_Struct2(self,bsc_xfer_t,&bsc_xfer_data_type);
  st->control=st->control|0x00000080L;
  return ULONG2NUM(st->control);
}

#txBuf=(txBuf) ⇒ Object

Set TX buffer



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# File 'ext/pigpio/pigpio.c', line 232

VALUE pigpio_rbst_bsc_xfer_w_txBuf(VALUE self,VALUE txBuf){
  bsc_xfer_t *st=TypedData_Get_Struct2(self,bsc_xfer_t,&bsc_xfer_data_type);
  int len=RSTRING_LEN(txBuf);
  char *buf=StringValuePtr(txBuf);
  st->txCnt=(len<BSC_FIFO_SIZE)?len:BSC_FIFO_SIZE;
  memcpy(st->txBuf,buf,st->txCnt);
  //for(int i=0;i<st->txCnt;i++){st->txBuf[i]=*buf++;}
  RB_GC_GUARD(txBuf);
  return self;
}