Hello,
I'm pretty new to embedded programming. I want to use the DE2 board as mp3 player, using the USB as input for my mp3 files.
So I need an USB host controller. Since the SLS hc controller requires a license, I need to build my own but I can't seem to make it work.
This is what i've done so far:
In Qsys:
- Use the nios-system qsys file from the DE2 Media Computer (University Program) as a starting point
- From the CD-rom => DE2_NIOS_HOST_MOUSE_VGA => ISP1362, used the class.ptf file to add a new component.
- Connected clock, reset, avalon_slave and exported the conduit
- Used the 'Assign Base Addresses', it assigned address 0x00800000
In Quartus:
- Again using the Media Computer, added the OTG pin assignments
- Used the Media Computer sdc file for TimeQuest Timing Analyzer
- Compiled without errors
- Downloaded the .sof onto the board
In Nios II (Eclipse)
- Made a new project with the 'Hello uCos' template
- The console prints the hellos from the 2 tasks, so that's working fine
Then I used the following code to read the ChipID:
# define USB_BASEADDR 0x00800000
volatile int * hc_data = (int *) USB_BASEADDR;
volatile int * hc_com = (int *) USB_BASEADDR+1;
...
unsigned int ChipID = 1;
*(hc_com) = 0x27; // hc_com=0x00800004
ChipID = *(hc_data); // hc_data = 0x00800000
printf("hc_data is : %4X\n", hc_data);
printf("hc_com is : %4X\n", hc_com);
printf("ChipID is : %4X\n", ChipID);
But this returns 0
According to the datasheet it should return 3630h, what am I missing here?
Any help would be appreciated.
