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,
PIC32 DMA problem
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- IvanJeremic
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- Joined: 05 Sep 2022 14:32
Re: PIC32 DMA problem
#2 Post by IvanJeremic » 15 Jan 2024 12:26
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.
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.
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