TMS570LS1224: What is the size needed for the adc_data array?

Gabriel Berthiaume

Part Number: TMS570LS1224
Other Parts Discussed in Thread: HALCOGEN

Hi,

In the HALcoGEN ADC example, we declare an array for storing read data.
I'm wondering about the adc_data size signification.
Why 2?

I didn't find any information in the HALcoGEN documentation.

In the adcGetData() source code, we find the array size with this line. I'm not sure its exact meaning.

uint32  count = (intcr_reg >= 256U) ? s_adcFiFoSize[index][group] : (s_adcFiFoSize[index][group] - (uint32)(intcr_reg & 0xFFU));

Is this link to the number of the channel?

Regards,

Gabriel

0 QJ Wang over 5 years ago

Hi Gabriel,

The array size of adc_data can be the number of ADC channels which are sampled in your code:

typedef struct adc_data
{
uint32 id; /**< Channel/Pin Id */
uint16 value; /**< Conversion data value */
} adcData_t;

0 Gabriel Berthiaume over 5 years ago in reply to QJ Wang

QJ Wang said:

The array size of adc_data can be the number of ADC channels which are sampled in your code:

Thanks QJ Wang.

Is it possible to get this value at compile time (as this seems to be hardcoded into Halcogen settings)?

0 QJ Wang over 5 years ago in reply to Gabriel Berthiaume

Hello,

The structure of adcData_t is defined in HALCoGen generated code (adc.h). You can declare an array of this STRUCT anywhere in your code.

adcData_t adc_data[xx];

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