Hi,
I tried to sample 6 channels together but i always have 0xfff, im not
sure of the initialisation of the adc if someone can help me it would be
nice...
here is my component
module CeaSensorP
{
uses
{
interface Msp430Adc12MultiChannel as Adc;
interface Resource;
}
provides
{
interface CeaSensor;
}
}
implementation
{
uint16_t results[6];
async command void CeaSensor.init()
{
call Resource.request();
}
event void Resource.granted()
{
atomic
{
adc12memctl_t memctl[6] = {
/*{ inch: INPUT_CHANNEL_A0, sref:
REFERENCE_VREFplus_AVss, 0 }, */
{ inch: INPUT_CHANNEL_A1, sref:
REFERENCE_VREFplus_AVss, 0 },
{ inch: INPUT_CHANNEL_A2, sref:
REFERENCE_VREFplus_AVss, 0 },
{ inch: INPUT_CHANNEL_A3, sref:
REFERENCE_VREFplus_AVss, 0 },
{ inch: INPUT_CHANNEL_A6, sref:
REFERENCE_VREFplus_AVss, 0 },
{ inch: INPUT_CHANNEL_A7, sref:
REFERENCE_VREFplus_AVss, 1 }
};
msp430adc12_channel_config_t config =
{
inch: INPUT_CHANNEL_A0,
sref: REFERENCE_VREFplus_AVss,
ref2_5v: REFVOLT_LEVEL_2_5,
adc12ssel: SHT_SOURCE_ACLK,
adc12div: SHT_CLOCK_DIV_1,
sht: SAMPLE_HOLD_64_CYCLES,
sampcon_ssel: SAMPCON_SOURCE_SMCLK,
sampcon_id: SAMPCON_CLOCK_DIV_1
};
jiffies = 250;
signal CeaSensor.initDone( call Adc.configure(&config,
memctl, 5, results, 6, jiffies));
}
}
async command error_t CeaSensor.sample()
{
return call Adc.getData();
}
async event void Adc.dataReady( uint16_t *buffer, uint16_t numSamples )
{
signal CeaSensor.sampleDone(buffer, numSamples);
}
}
the buffer signaled by dataReady is always full of 0xfff....
thanks
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