[Tinyos-devel] Re: I2C and SPI sharing

[Max CORTIANA]

If I don't add the line, I2C doesn't work fine.
I thought Jonathan would have added the line to CVS code.

- Max

Philip Levis wrote:
> On Oct 13, 2006, at 6:20 AM, Max CORTIANA wrote:
>
>> I was using the development branch of CVS, updated on September, 1.
>> Now I've update everything and I see the radio working.
>> BUT
>> I2C is not sending anything.
>>
>> On September I had a problem with I2C and Jonathan Hui suggested me 
>> to modify file HplMsp430I2C0P by adding a statement in the SetModeI2C 
>> function.
>> So I've added the line
>> I2CTCTL = 0;
>>
>> in function setModeI2C, so that now it looks like:
>>
>>      U0CTL |= ( ( config->rxdmaen << 7 ) |
>>                 ( config->txdmaen << 6 ) |
>>                 ( config->xa << 4 ) |
>>                 ( config->listen << 3 ) );
>>      I2CTCTL = 0;
>>      I2CTCTL = ( ( config->i2cword << 7 ) |
>>          ( config->i2crm << 6 ) |
>>          ( config->i2cssel << 4 ) );
>>
>> This statement isn't reporter on the CVS.
>>
>> The demo program I've sent behaves like:
>>
>> 1-Radio is initialized (SPI activity)
>> 2-I2C device is not accessed (NO I2C activity)
>> 3-Radio send the message.
>>
>> When I re-add the missing line in HplMsp430I2C0P, the node behaves like:
>>
>> 1- Radio is turned on (SPI activity)
>> 2- Device is accessed (I2C activity)
>> 3- Dead (NO SPI activity)
>
>
> So it sounds like the code in the repository is fine, and the problem 
> is with this line you added?
>
> Phil
>