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USB EZ-PD™ Type-C

Anderson_Lin
Level 2
10 replies posted 10 sign-ins 5 replies posted
Level 2

Hi LCY Community,

SDK only DCP &  CDP , how to new add SDP connected?

Anderson_Lin_1-1619599470679.png

 

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1 Solution
PranavaYN
Moderator
Moderator 50 likes received First comment on KBA First question asked
Moderator

Hi,

Power SDK doesn't explicitly identify SDP. According to BC protocol primary detection separates SDP from CDP/DCP. Please refer to bc_fsm_sink_primary_charger_detect() function where non CDP/DCP port is directly treated as "Type-C only source connected"

Best regards,
Pranava

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3 Replies
PranavaYN
Moderator
Moderator 50 likes received First comment on KBA First question asked
Moderator

Hi,

Power SDK doesn't explicitly identify SDP. According to BC protocol primary detection separates SDP from CDP/DCP. Please refer to bc_fsm_sink_primary_charger_detect() function where non CDP/DCP port is directly treated as "Type-C only source connected"

Best regards,
Pranava
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Anderson_Lin
Level 2
10 replies posted 10 sign-ins 5 replies posted
Level 2

Dear Sir

What we need is detailed reasons why the Power SDK doesn't explicitly identify SDP.

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PranavaYN
Moderator
Moderator 50 likes received First comment on KBA First question asked
Moderator

Hi,
Apologies for delay in response.

All other legacy charging protocols begin with DCP/CDP detection initially. SDP state detection is not explicitly implemented and is directly considered as Type-C only Source.

Best regards,
Pranava
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