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Altera_Forum's avatar
Altera_Forum
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11 years ago

HSMC board flash LED from Linux

Hi I am new to the Altera products and I am busy learning how to develop on it

I have the Altera Cyclone V Soc dev kit with the HSMC debug header plugged in

I already flashed the LED's on the board itself using the provided libraries 

# !/bin/sh
insmod /lib/modules/3.7.0/kernel/drivers/gpio/gpio-generic.ko
insmod /lib/modules/3.7.0/kernel/drivers/gpio/gpio-dw.ko
insmod /lib/modules/3.7.0/kernel/drivers/gpio/gpio-altera.ko
insmod /lib/modules/3.7.0/kernel/drivers/leds/led-class.ko
insmod /lib/modules/3.7.0/kernel/drivers/leds/leds-gpio.ko
//Switch LED On
echo 1 > /sys/class/leds/fpga_led0/brightness
sleep 1
//Switch LED Off
echo 0 > /sys/class/leds/hps_led0/brightness

and via "RAW" access using the code 


//Set All LEDS off (put IO's High to switch Off)
alt_clrbits_word( ( virtual_base + ( ( uint32_t )( ALT_LWFPGASLVS_OFST + LED_PIO_BASE ) & ( uint32_t )( HW_REGS_MASK ) ) ), 0x0000000F );
//Turn LED_FPGA_0 On (put IO low to switch the LED On)
alt_setbits_word( ( virtual_base + ( ( uint32_t )( ALT_LWFPGASLVS_OFST + LED_PIO_BASE ) & ( uint32_t )( HW_REGS_MASK ) ) ), 0x00000001 );

Now I want to do the same for the LED on the HSMC board

I need to set this pin LOW

DIFFIO_TX_T18p,DQ3T (Altera Pin A4)

and I need to set this pin High

DIFFIO_RX_T39p,DQ5T (Altera Pin F9)

But I do not know where to find the memory map to show me what memory to write to.

Can anybody please guide me in the correct direction?

Thanks

Walter

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    11 years ago

    Hi There!

    I was trying the same thing and found your thread. Was bookmarking this until I figured it out by myself.

    There are some steps you need to do:

    1. Add parallel I/O connection output to your fpga system on Qsys. Just follow leds_pio. Give appropriate width (mine was 8), so it will have,

    for instance, hsmc_pio_out_exported[7:0] pin from your system. Also, don't forget to connect it to hps master & configure the address mapping.

    Generate.

    2. Edit your top_system verilog, add for example, "output wire [7:0] hsmc_pio" connect your hsmc_pio_out_exported to it.

    3. Assign your pin, for example, hsmc_pio[0] to PIN_A4, and hsmc_pio[1] to PIN_F9.

    4. Edit socfpga.dtb (device tree blob), you can use sopc2dts. And put it into your SDCard partition 1 (mmcblk0p1), replace the old one.

    5. The rest is yours.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    11 years ago

    Oh yeah, don't forget to compile and reprogram your fpga using the compiled .sof or .rbf