Re: HW access

Am 2016-08-09 17:49, schrieb Matthias Lange:

On 08/09/2016 04:44 PM, ba_f wrote:

...

Am 2016-08-09 15:19, schrieb Matthias Lange:

Great, all L4Re-Apps boot now.

But, there's still something wrong. Here's my code to access HW:

printf("io_request..."); long ret = l4io_request_iomem( 0x43c00000, 4, L4IO_MEM_NONCACHED, baseaddr);

Did you initialize 'baseaddr' to NULL?

A few more recommendations. It is usually bad practice to use hard-coded device addresses. If you like the convinience of libio-io you can use l4io_lookup_device() to get a device handle which you can use to iterate the device resources with l4vbus_get_resource().

Matthias.

Nice, thanks for the hint.

I took examples/misc/eb_leds/eb_leds.c as reference and now it works.

Thanks Matthias,

ba_f