[Tinyos-devel] I2C Driver for MSP430

[Max CORTIANA]

There you find a snapshot of my code.
I still see that no HW interrupt ( != signal ) is received after last 
STOP sent over I2C.
Today I've seen the same problem also with a read + read combination.

- Max


I2CAppC.nc

#include "I2C.h"

configuration I2CappC
{
}
implementation
{
  components MainC, I2Capp, LedsC;//, Msp430I2CC;*/
  /*components new TimerMilliC() as Timer0;
  components new TimerMilliC() as Timer1;
  components new TimerMilliC() as Timer2;
     */
  I2Capp -> MainC.Boot;
 
  components HplMsp430GeneralIOC;
  I2Capp.HplMsp430GeneralIOADC -> HplMsp430GeneralIOC.ADC3/*ADC3*/;
  I2Capp.HplMsp430GeneralIOInterrupt -> HplMsp430GeneralIOC.Port20/*ADC3*/;
  I2Capp.Leds -> LedsC;

  components new Msp430I2CC();
  Msp430I2CC.Msp430I2CConfigure->I2Capp;
  I2Capp.I2CBasicAddr->Msp430I2CC;
  I2Capp.Resource -> Msp430I2CC;
//  BlinkC.Leds -> LedsC;
}

--------------------------------------------------------

I2Capp.nc:


module I2Capp
{
  provides interface Msp430I2CConfigure;
  uses interface I2CPacket<TI2CBasicAddr> as I2CBasicAddr;
  uses interface Boot;
  uses interface HplMsp430GeneralIO as HplMsp430GeneralIOADC;
  uses interface HplMsp430GeneralIO as HplMsp430GeneralIOInterrupt;
  uses interface Leds;
  uses interface Resource;
}

implementation
{
  uint8_t buffer[10];
  uint8_t write;
  uint16_t threshold;
 
  event void Boot.booted()
  {
    write = 3;
    threshold = 0x10;
  }
 
  async command msp430_i2c_config_t* Msp430I2CConfigure.getConfig(){
    return &msp430_i2c_default_config;
  }

  task void test(){
    switch (write){
      case 3:
        buffer[0] = 0x28;   //indirizzo del primo registro
        buffer[0] |= 0x80;
        write = 4;
        call I2CBasicAddr.write(I2C_START|I2C_STOP, 0x1D, 1, buffer);
        break;
      case 4:
        write = 3;
        call I2CBasicAddr.read(I2C_START|I2C_STOP, 0x1D, 6, buffer);
        break;
    }
    return;
  }
 
  async event void I2CBasicAddr.writeDone(error_t error, uint16_t addr, 
uint8_t length, uint8_t* data){
    post test();
    return;
  }

  async event void I2CBasicAddr.readDone(error_t error, uint16_t addr, 
uint8_t length, uint8_t* data){
    post test();
    return;
  }

  event void Resource.granted(){
    post scrivi();
    return;
  }
}

--------------------------------------------------------

Jonathan Hui wrote:
> Can you send some sample code that reproduces the problem?
>
> Also, just to verify the I2C code you're using, what is the revision
> of the  Msp430I2CP.nc printed in the @version tag?
>
> Thanks.
>