USB EZ-PD™ Type-C

[NaMe_2085021]

Hi everyone,

I use CYPD3120.

I get the whole range of voltages from the array, but I can't get 20V.

Could you help me?

Part of the code:

........................................................................................................................................................................................

static ccg_status_t hid_output_data (usb_setup_pkt_t *pkt)

{

    uint8_t  port;

    uint8_t *ptr;

    ptr = usb_hid_get_ep0_buffer();

    pd_do_t SNK_PDO[5]; 

    SNK_PDO[0].val = 0x0001912C; //5V 3A

    SNK_PDO[1].val = 0x0002D12C; //9V 3A

    SNK_PDO[2].val = 0x0003C12C; //12 3A

    SNK_PDO[3].val = 0x0004B12C; //15V 3A

    SNK_PDO[4].val = 0x000640C8; //20V 2A

    for(i = 1; i < 64; i++)

    {             

        switch(ptr[1])

        {           

            case PD_5V:

                dpm_update_snk_cap(0, 1, SNK_PDO);

                dpm_update_snk_cap_mask (0, 0x0F);

                dpm_pd_command (0, DPM_CMD_SNK_CAP_CHNG, NULL,NULL);

            break;

            case PD_9V:

                dpm_update_snk_cap(0, 2, SNK_PDO);

                dpm_update_snk_cap_mask (0, 0x0F);

                dpm_pd_command (0, DPM_CMD_SNK_CAP_CHNG, NULL,NULL);

            break;

            case PD_12V:

                dpm_update_snk_cap(0, 3, SNK_PDO);

                dpm_update_snk_cap_mask (0, 0x0F);

                dpm_pd_command (0, DPM_CMD_SNK_CAP_CHNG, NULL,NULL);

            break;

            case PD_15V:

                dpm_update_snk_cap(0, 4, SNK_PDO);

                dpm_update_snk_cap_mask (0, 0x0F);

                dpm_pd_command (0, DPM_CMD_SNK_CAP_CHNG, NULL,NULL);

            break;

            case PD_20V:

                dpm_update_snk_cap(0, 5, SNK_PDO);

                dpm_update_snk_cap_mask (0, 0x0F);

                dpm_pd_command (0, DPM_CMD_SNK_CAP_CHNG, NULL,NULL);

            break;                

        }

........................................................................................................................................................................................

[YiZ_31]

Hi,

You can try to update the snk cap mask to 0x1F. It looks like you only enabled 4 sink PDOs.

Regards,
Eddie

[NaMe_2085021]

Hi Eddie,

Thank you for your fast update, but your answer dosn't work for me.

Could you send part of the code example?

Best regards,

Nazar Melnichek

[YiZ_31]

Hi,

Do you have a PD analyzer to capture the CC log? Have you updated sink PDO with

dpm_update_snk_cap (0, 5, SNK_PDO);

dpm_update_snk_cap_mask(0, 0x1F);.

[NaMe_2085021]

Hi,

I don't have a PD analyzer.

Yes, I updated that. But it doesn't work for me.

[YiZ_31]

Hi,

It may also be due to your adapter do not have matched 20V PDO. CYPD3120 already have 20V PDO if you have updated the code.