XFlash question: including data file with DFU upgrade

[genap]

that is how i am trying to read flash data from an application:
(my application is based on a dj usb audio reference design)

In flash_interface.c I have functions

Code: Select all

int flash_init_exchange(void)
{
    DFUCustomFlashEnable();
    flash_cmd_enable_ports();

    return 0;
}

int flash_deinit_exchange(void)
{
    DFUCustomFlashDisable();
    flash_cmd_disable_ports();
    return 0;
}

void flash_read_exchange(unsigned int address, unsigned int amt, unsigned char flbuf[])
{
  fl_readData(address,amt,flbuf);
}

And this is a test function in application, reading 16 bytes from the first data partition sector:

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void front_flash_exchange(void)
{
  unsigned char fl_buffer[16];

  flash_init_exchange();
  flash_read_exchange(0x0000, 16, fl_buffer);
  Print_buffer(fl_buffer, 16);
  flash_deinit_exchange();
}

The front_flash_exchange() is executed first,
then flag is set and all the cores start executing.

The data reading works fine, but then an exception "Signal 'ET_ELLEGAL_RESOURCE' received" is
raised on ConfigAudioPorts() / configure_out_port().
Probably because audio ports are multiplexed with flash access ports.

I have no idea how to deal with this issue.

[Ross]

My guess is that configure_out_port is raising an exception as you have turned the port off inside flash_cmd_disable_ports();

On entry to ConfigAudioPorts() I would try making a call to set_port_use_on() for each port.

[genap]

ok.
I've added the following to the audioports.xc:

Code: Select all

void ConfigAudioPorts(unsigned int divide) 
{
    set_port_use_on(p_lrclk);
    set_port_use_on(p_bclk);
    set_port_use_on(p_i2s_adc[0]);
    set_port_use_on(p_i2s_dac[0]);

It works!

Thank you so much, Ross.

[Ross]

Thank you so much, Ross.

No worries :)