MikroElektronika Forum

Hello,

I'm now working with mini-32 for pic32, and I'm trying to use DMA to transfer the ADC data. I saw the Microchip mannual and they provide some example code to do so. And to use DMA I should declear the buffer as coherent.And the example code declear the buffer as following:

// *************************************************************************************************
// G L O B A L V A R I A B L E S
// *************************************************************************************************
uint32_t __attribute__((coherent)) adc_bufA[INTERLEAVED_ADC_COUNT * ADC_DMA_BUFF_SIZE];
uint32_t __attribute__((coherent)) adc_bufB[INTERLEAVED_ADC_COUNT * ADC_DMA_BUFF_SIZE];
uint32_t adc_buf_index = 0;
bool adc_dma_buf_full_flg = 0;

But it seems that the mikroC PRO does not recognize '__attribute__((coherent))' (specifically, it doesn't recognized ((coherent))). Could you give me some advice on how to modify this? Basically I'm trying to allocate memory in uncached regions, i.e. KSEG1.

Best,

Hi,

We spoke about this in a helpdesk ticket, but for everyone who might have a similar problem, here is the answer:

"Attribute" is a GCC oriented feature and GCC is not supported in MikroC unfortunately.

Regards,

Ivan.