System Hardfault when calling dwt_probe()

Wireless Connectivity Ultra-Wideband
24

Hello bruno,

In the API guide, it has mentioned about const struct dwt_driver_s … something. Do we need to add that to somewhere in our code?

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Thanks in Advance!!!

25

Hi Kavindu,
That is an internal struct, what you have to do when you are configuring the dw3000 is a call to a function because if not all driver functions points to Null.
Here the initial piece of my configuration script:
int TransmitterConnector_init(void){
int err = 0;
uint32_t dev_id;

//must disable interrupts before doing all that, then reenable at the end
my_disable_IRQ();

//this is our tested and working init sequence: slowrate, wakeup, reset, wait a little.
port_set_dw_ic_spi_slowrate();
wakeup_device_with_io();
reset_DWIC();
HAL_Delay(10); 

int retval;
retval = dwt_probe((struct dwt_probe_s *)&dw3000_probe_interf); // THIS IS WHAT I TOLD BEFORE

while (!dwt_checkidlerc()) /* Need to make sure DW IC is in IDLE_RC before proceeding */ { };
port_set_dw_ic_spi_fastrate(); //after idle, we can set to fastrate

if (dwt_initialise(DWT_DW_INIT) == DWT_ERROR)
{
    err = -1;
    return err;
	//while (1) { };
}

dev_id = dwt_readdevid();

if(dev_id != 0xdeca0302){ //if it doesn't read the correct devID, just get it out early. this way we can manage retries with more flexibility on caller function (main). USE THE devID THAT SUITS YOUR DEVICE!!!
	err = -1;
	return err;
}

// 	continue your DW configuration

Hope it helps!

1 Like
26

I changed the linker file as you mentioned and also followed the steps you have given in DWM3000 with STM32L433 undefined reference in library - #2 by emeric_hes . Now I also getting a hardfault error when calling dwt_readdevid() function. dwt_probe() function returns 0 (DWT_SUCCESS) but code stucks at dwt_readdevid(). Do you know any solution to this?

Thanks in Advance!!!

Code snippet

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27

Just recently in Nov 2024 I saw a new release of the SDK-1.0.0 where the driver is in the src form as in the old good times.
Hope that may help you understand how it works.