题目说是操作,其实主要是移植。该芯片支持iic与spi两种操作方式,对于现在我使用的NFC06A1扩展板来说,默认即为spi模式,本文将记录下移植时需要注意的点.( K% H' ?8 j) S# |5 M; {8 l
1.原理图
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5 k% S, b* g' @3 V扩展板引脚标注与实际板卡的引脚是不同的,这里需要根据实际修改一下。- H4 B& E% V3 n* g0 x
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2.spi配置8 W1 H( y0 K+ \9 }' s' n
, a/ ?9 H( U+ `; \6 Q' g上图是本次移植中,笔者使用的配置,亲测可行9 Z* b' V8 @0 Y# C
! t2 P# U- M% }- [( G' p U3.外部中断配置2 |/ l0 V4 t; R6 X, L2 m
- /**
! j. L1 K5 c* q* s - * @brief This function handles EXTI line3 interrupt.
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- void EXTI3_IRQHandler(void)
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9 Y3 h0 e ~9 x' l+ M; j- J - /* USER CODE BEGIN EXTI3_IRQn 0 */
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- /* USER CODE END EXTI3_IRQn 0 */
. D0 \* h1 K1 A - HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_3);
$ A7 G+ ]0 z( m! v - /* USER CODE BEGIN EXTI3_IRQn 1 */
* P0 Y( ~) C: x j2 G8 E' b - st25r3916Isr();
6 V$ M# v0 }( ~ {: d5 m - /* USER CODE END EXTI3_IRQn 1 */
n% ^- k0 e# u; N% Y, b: v - }
复制代码 需要在外部中断中加入st25r3916Isr();处理。注意:该函数操作了接口的读写,如果使用spi中断或者iic中断接受需要注意。建议使用操作系统的时候使用通知进行操作。
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7 \4 {, A. i+ Y* w! p: a, |: J( g4.代码配置4 E* W* Q# v5 C0 l( s3 {
基本所有的配置都集中在platform.h文件里面。下面代码是关于NFC支持相关功能的开关。
2 L/ R" C z/ @' M- #define RFAL_FEATURE_LISTEN_MODE true /*!< Enable/Disable RFAL support for Listen Mode */
9 T% Q9 }) L! N3 a6 E - #define RFAL_FEATURE_WAKEUP_MODE true /*!< Enable/Disable RFAL support for the Wake-Up mode */
- i3 ?. x0 H4 a0 A# H* H7 F/ V - #define RFAL_FEATURE_NFCA true /*!< Enable/Disable RFAL support for NFC-A (ISO14443A) */
" |' A! p% b' p5 M. a, s - #define RFAL_FEATURE_NFCB true /*!< Enable/Disable RFAL support for NFC-B (ISO14443B) */. F9 t. |, B8 h8 a( n9 d4 m2 r" i
- #define RFAL_FEATURE_NFCF true /*!< Enable/Disable RFAL support for NFC-F (FeliCa) */8 Y; L4 l" z& B+ C9 a
- #define RFAL_FEATURE_NFCV true /*!< Enable/Disable RFAL support for NFC-V (ISO15693) *// a# w8 N" V7 E- K& E. R3 w+ O
- #define RFAL_FEATURE_T1T true /*!< Enable/Disable RFAL support for T1T (Topaz) */: Y! T- O5 _& G* _: D9 w4 Q
- #define RFAL_FEATURE_T2T true /*!< Enable/Disable RFAL support for T2T (Mifare) */5 C! S6 }: |4 W
- #define RFAL_FEATURE_T4T true /*!< Enable/Disable RFAL support for T4T */
6 [7 @2 s$ m% m: J: o: G - #define RFAL_FEATURE_ST25TB true /*!< Enable/Disable RFAL support for ST25TB */
7 D8 [* Y: W3 J - #define RFAL_FEATURE_ST25xV true /*!< Enable/Disable RFAL support for ST25TV/ST25DV */) r/ t+ I4 N. x8 ~3 s9 |5 i" g
- #define RFAL_FEATURE_DYNAMIC_ANALOG_CONFIG false /*!< Enable/Disable Analog Configs to be dynamically updated (RAM) */
, d$ d. j, C, B$ F3 ` - #define RFAL_FEATURE_DPO false /*!< Enable/Disable RFAL dynamic power support */
) B/ x6 ^2 b% u/ u; m - #define RFAL_FEATURE_ISO_DEP true /*!< Enable/Disable RFAL support for ISO-DEP (ISO14443-4) */
3 ]% f, @- M2 i5 }+ z, |7 @, h - #define RFAL_FEATURE_ISO_DEP_POLL true /*!< Enable/Disable RFAL support for Poller mode (PCD) ISO-DEP (ISO14443-4) */ s% A# {0 p2 A' S8 ]1 m
- #define RFAL_FEATURE_ISO_DEP_LISTEN true /*!< Enable/Disable RFAL support for Listen mode (PICC) ISO-DEP (ISO14443-4) */
5 T( V- |) P3 P8 P1 G5 ^1 u& _ - #define RFAL_FEATURE_NFC_DEP true /*!< Enable/Disable RFAL support for NFC-DEP (NFCIP1/P2P) */
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% |7 D& S9 T, S. W- #define RFAL_FEATURE_ISO_DEP_IBLOCK_MAX_LEN 256U /*!< ISO-DEP I-Block max length. Please use values as defined by rfalIsoDepFSx */
& ^- G) W- Y0 D, y1 P - #define RFAL_FEATURE_NFC_DEP_BLOCK_MAX_LEN 254U /*!< NFC-DEP Block/Payload length. Allowed values: 64, 128, 192, 254 */# M) l1 Z+ O D8 e2 y, {
- #define RFAL_FEATURE_NFC_RF_BUF_LEN 258U /*!< RF buffer length used by RFAL NFC layer */
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- #define RFAL_FEATURE_ISO_DEP_APDU_MAX_LEN 512U /*!< ISO-DEP APDU max length. Please use multiples of I-Block max length */! G0 o! Z3 ?. V9 K Y, c
- #define RFAL_FEATURE_NFC_DEP_PDU_MAX_LEN 512U /*!< NFC-DEP PDU max length. */
复制代码
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6 K2 q6 ]- v+ I' B效果演示:* c) H$ c+ \$ ^
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读取M1卡卡号,不支持M1协议,但是支持NRFA。
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( t3 J% k, {+ {3 B& G8 v; S1 y手机读取板子,识别为NFCF协议了,其实是因为手机啥都支持,读到的就看板子处在那种模式。: F& {1 R- m6 b/ j' ~! M
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相关打印
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% i- E" l }; l# @8 a# F2 O最后附上程序,注:为了减小代码体积,删除了CMSIS的DSP相关文件' P6 u& E7 b/ w
nfc.zip
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