hw_dma.h

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#pragma once
 
#include "hardware/dma.h"
#include "hardware/irq.h"
#include "hw/spi/hw_spi.h"
#include "hw/i2c/hw_i2c.h"
#include "FreeRTOS.h"
#include "task.h"
#include "semphr.h"
#include "queue.h"

#define I2C_BURST_SIZE 16
 

class HW_DMA
{
private:
 
public:
    irq_num_t irq_number;
    uint channel;
    SemaphoreHandle_t end_of_xfer;

    HW_DMA(irq_num_t irq_number = DMA_IRQ_0, irq_handler_t dma_irq_handler = NULL);

    ~HW_DMA();

    int xfer_mem2mem(uint32_t number_of_transfer,
                     dma_channel_transfer_size_t transfer_size,
                     volatile void *destination_address,
                     volatile void *source_address,
                     bool start);

    void cleanup_and_free_dma_channel();

    void start_dma();
};