NFC Services: Difference between revisions

NFC management service "nfc:m": Added information about 0x402 coommand in nfc:m.
(12 intermediate revisions by one other user not shown)
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On New3DS NFC module uses the [[I2C_Registers|NFC]] hardware via the [[I2C_Services|i2c::NFC]] and [[GPIO_Services|gpio:NFC]] services. On Old3DS NFC module communicates with a NFC peripheral via IR with the IRUSER service.
On New3DS NFC module uses the [[I2C_Registers|NFC]] hardware via the [[I2C_Services|i2c::NFC]] and [[GPIO_Services|gpio:NFC]] services. On Old3DS NFC module communicates with a NFC peripheral via IR with the IRUSER service.


A total of 6 sessions can be open simultaneously for all of these services combined.
Only 1 session can be open for all of these services combined. Commands for each service are handled by the main-thread.


=NFC services=
=NFC services=
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| void
| void
| s32 result, u32 unknownA[16]
| s32 result, u32 unknownA[16]
| Output seems to be a struct
| Output seems to be a struct. unknownA[2]'s value is the AppID of the Amiibo.
|-
|-
| 0x04030000
| 0x04030000
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==NFC development service "nfc:dev"==
==NFC development service "nfc:dev"==
This service seems to be intended for use only on dev-units(or at least some of the command(s)).
{| class="wikitable" border="1"
|-
!  Command header
!  Available since system-version
!  Description
|-
| 0x00110100
|
| [[NFCDEV:ReadRawPages|ReadRawPages]]
|-
| 0x001200C0
|
| [[NFCDEV:WriteRawPage|WriteRawPage]]
|}
 
Some of these commands seems to be intended for use only on dev-units.


Unlike the New3DS NFC-module, at least some of these commands are stubbed in the Old3DS NFC-module(only returns an error).
Unlike the New3DS NFC-module, at least some of these commands are stubbed in the Old3DS NFC-module(only returns an error).
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|  
|  
| ?
| ?
|-
| 0x000500C2
|
| [[NFCP:SendTagCommand|SendTagCommand]]
|-
| 0x00060000
|
| GetTagInfo
|-
|-
| 0x00070000
| 0x00070000
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|-
|-
| 0x00080000
| 0x00080000
|
| Writes a handle to cmdreply[3].
|-
| 0x00090000
|  
|  
| Writes a handle to cmdreply[3].
| Writes a handle to cmdreply[3].
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|  
|  
| Unknown. Writes an output value to cmdreply[2].
| Unknown. Writes an output value to cmdreply[2].
|-
| 0x000B0000
|
| Unknown. Writes 0x60-bytes of output starting at cmdreply[2]. u16 +0 is the size of the data at +4, +2 is not initialized, u8 +3 is loaded from state, u32 +0x2C is loaded from state, and the data at +4 with the previously mentioned size is copied from state.
|-
| 0x000C0040
|
| (u32 outputsize) Writes output to static_buf_id=0, outputsize 1 is used when it's >=1.
|-
| 0x000D0040
|
| (u32 outputsize) Writes output to static_buf_id=0, outputsize 1 is used when it's >=1.
|-
| 0x000E0080
|
| (u8 unk, u32 outputsize) Writes output to static_buf_id=0, outputsize 2 is used when it's >=2.
|-
| 0x000F0040
|
| (u32 outputsize) Writes output to static_buf_id=0, outputsize 2 is used when it's >=2.
|-
| 0x00100000
|
| Unknown.
|-
| 0x00110000
|
| Unknown.
|-
| 0x00120000
|
| Unknown. Writes an output u32 to cmdreply[2].
|-
| 0x00130000
|
| Unknown. Writes an output u32 to cmdreply[2].
|}
|}


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!  Available since system-version
!  Available since system-version
!  Description
!  Description
|-
| 0x00130102
|
| [[NFCS:SendTagCommand|SendTagCommand]]
|-
|-
| 0x00230000
| 0x00230000
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| 0x001F0080
| 0x001F0080
| [[10.0.0-27|10.0.0-X]]
| [[10.0.0-27|10.0.0-X]]
| ?
| [[NFC:StartOtherTagScanning|StartOtherTagScanning]]
| u16, u32
|  
|  
|  
| Used by JPN eShop app "Megami Meguri".
| Used by JPN eShop app "Megami Meguri".
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| 0x00200102
| 0x00200102
| [[10.0.0-27|10.0.0-X]]
| [[10.0.0-27|10.0.0-X]]
| ?
| [[NFC:SendTagCommand|SendTagCommand]]
| [1]=u32_inputsize, [2]=u32_outputsize, [3]=u32_unk1, [4]=u32_unk2, [5]={static ipc buf translate-header with static_buf_id=0}, [6]=inbufaddr
|  
| [2]=output_u32, 3={static ipc buf translate-header with static_buf_id=0}, 4=outbufaddr
|  
| outputsize value 0x800 will be used when it's >=0x800.
|
|-
|-
| 0x00210000
| 0x00210000
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|  
|  
|  
|  
| Used by JPN eShop app "Megami Meguri".
| Used by JPN eShop app "Megami Meguri". This can only be used when [[NFC:Initialize|initialized]] with type3, and when the [[NFC:GetTagState|TagState]] is 3.
|-
|-
| 0x00220000
| 0x00220000
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|  
|  
|  
|  
|  
| This can only be used when [[NFC:Initialize|initialized]] with type3, and when the [[NFC:GetTagState|TagState]] is 3.
|}
|}