TC_Chu's Point

R8C/2B + R8C/27 + Arduino

R8C/27 as I2C Master Send Command

Arduino as Motor Generate the 2 Phase Encoder Signal

R8C/2B as I2C Slave and Motor Controller

PS.有時候真搞不懂這些作EV Board的人 既然有Arduino幹嘛不Follow他的基本架構 這樣Hardware也可以互換 不是更方便 而不是每一片都搞上一堆LED,Keypad,LCD,EEPROM.....

R8C Tiny Reading Rotary Encoders

//Encoder
#include "rskr8c27def.h"
#include "ior8c26_27.h"
#include "digitIO.h"

#define encoder0PinA 15  //INT1
#define encoder0PinB 33  //INT3

#define RawPinA      p1_5
#define RawPinB      p3_3

int encoder0Pos ;

void encoder_init()
{
 
  //**************************************
  //    INT1 Interrupt Setting
  //**************************************
  //Note: Set INT1 hardware interrupt pin to input
  //Note: By default, INT1 pin is at P1_7 pin
  //To change to INT1 pin at P1_5 pin, set tiosel_traioc=1
  //To change to INT1 pin at P3_6 pin, set int1sel=1
 
  int1ic=0x04;                            
  //Set interrupt priority level and active edge(int1ic bit 0, 1, 2 and 4)
  int1en=1;                               
  //Input enabled(inten bit 2)
  int1pl=1;                               
  //Both edges selected(inten bit 3)
  int1f0=1;int1f1=0;                      
  //Filter with f1 sampling selected(intf bit 2 and 3)
  tiosel_traioc=1;                      
 
  //**************************************
  //    INT3 Interrupt Setting
  //**************************************
  //Note: Set INT3 hardware interrupt pin to input
  int3ic=0x04;                            
  //Set interrupt priority level and active edge(int3ic bit 0, 1, 2 and 4)
  int3en=1;                               
  //Input enabled(inten bit 6)
  int3pl=1;                               
  //Both edges selected(inten bit 7)
  int3f0=1;int3f1=0;                      
  //Filter with f1 sampling selected(intf bit 6 and 7)

  encoder0Pos = 0;
 
}

void encoder_stop()
{
  int1en=0;
  int3en=0;
}

void encoder_start()
{
  int1en=1;
  int3en=1;
}

void encoder_reset()
{
  encoder0Pos = 0;
}
#pragma vector= INT1
__interrupt void INT1_ISR(void)
{
  // look for a low-to-high on channel A
  //if (digitalRead(encoder0PinA) == HIGH) {
  if (RawPinA == 1) {
    if (RawPinB == 0) {
      encoder0Pos = encoder0Pos + 1; // CW
    }
    else {
      encoder0Pos = encoder0Pos - 1;  // CCW
    }
  }

  else   // must be a high-to-low edge on channel A                                     
  {
    if (RawPinB == 1) { 
      encoder0Pos = encoder0Pos + 1;  // CW
    }
    else {
      encoder0Pos = encoder0Pos - 1;   // CCW
    }
  }
}

#pragma vector= INT3
__interrupt void INT3_ISR(void)
{
  if (RawPinB == 1) { 
    if (RawPinA == 1) {
      encoder0Pos = encoder0Pos + 1;  // CW
    }
    else {
      encoder0Pos = encoder0Pos - 1;   // CCW
    }
  }

  // Look for a high-to-low on channel B

  else {
    if (RawPinA == 0) { 
      encoder0Pos = encoder0Pos + 1;  // CW
    }
    else {
      encoder0Pos = encoder0Pos - 1;   // CCW
    }
  }

}

via Arduino

Renesas R8C use Data Flash as Constant Data Storage (IAR)

#define FLASH _Pragma("location=\"FLASH\"")

FLASH const sensor_t  sr1 @ 0x2400 = {0,17,10,0,-1,-1,-1,0,0,9000};
FLASH const sensor_t  sr2 @ 0x2420 = {1,17,11,0,-1,-1,-1,0,9000,0};

I use R8C/27 32k Version so the Flash memory is @ 0x2400 -> 0x2BFF total 2KByte

Generate stepper-motor speed profiles in real time

Generate stepper-motor speed profiles in real time

Renesas R8C/27 Data Flash API

Download DataFlash-2009-09-24.rar

I have try the API from renesas but not working , so I make my own version. Only test on R8C/27

Renesas R8C/27 FreeRTOS Port (IAR)

Download R8C-FreeRTOS-2009-09-22.rar

Based on R8C-FreeRTOS HEW Port