STM32F103C8T6读取颜色识别模块,并把读取到的原始数据转换为HSL格式。% _9 ~5 L2 t4 ^! t2 ?
+ T- E% k7 B J M8 r& u) q; h/**********************************************************************************/5 W0 T( Q+ V2 x* M+ C$ ?. ]
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20201023更新
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& }: @% V) J# L f- U; o" cTCS34725只接GND、VCC、SCL、SDA四个引脚,1 s/ T! |/ ~: m6 x" u7 D
$ }: L/ j( e3 ~! O6 g; g. FSTM32F103C8T6的引脚接PB10-SCL,PB11-SDA。PA3是LED指示灯,
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1、修改SCL和SDA引脚在文件 tcs34725.c 中,# M, z6 Z+ _/ X9 f" r! U
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2、修改读取颜色频率,直接在main函数的主循环中修改时间,
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* {/ b8 n, G w; m' z' P/**********************************************************************************/( \1 ]: F- p2 @% h' \8 ]
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读取TCS34725的源代码很多,也很简单,但只是读取原始数据,也不知道怎么转换,官方手册也没说清楚,一般RGB的数据它偏偏是RGBC,到现在我也没搞清楚这个“C”代表啥意思。网上能搜到的RGB转HSL都是以RGB888的格式为准,转换之前除以255归一化,得到0-1之间的小数,然后转换,年前这个程序我调试了很久,今天突然搞明白了,把TCS的原始数据RGB除以C得到0-1之间的小数,这个C就相当于上面的255。上代码:( r& t- c0 Z( J7 ` U
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% X* D# X" n. M4 Q' c4 r- /******************************************************************************/5 _% W+ }, f4 L1 U
- #define TCS34725_ADDRESS (0x29)
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- #define TCS34725_COMMAND_BIT (0x80)
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- #define TCS34725_ENABLE (0x00)6 q6 B9 o4 B' z1 Y' v
- #define TCS34725_ENABLE_AIEN (0x10) /* RGBC Interrupt Enable */5 q5 ~( g1 G5 x' z
- #define TCS34725_ENABLE_WEN (0x08) /* Wait enable - Writing 1 activates the wait timer */
# E$ T/ \6 T3 h - #define TCS34725_ENABLE_AEN (0x02) /* RGBC Enable - Writing 1 actives the ADC, 0 disables it */
- E+ [# V" V j/ O& y - #define TCS34725_ENABLE_PON (0x01) /* Power on - Writing 1 activates the internal oscillator, 0 disables it */
! V$ @+ T% X7 @( \2 s# J - #define TCS34725_ATIME (0x01) /* Integration time */
5 j5 Q' n6 z% V/ Y& H+ Y$ ^ - #define TCS34725_WTIME (0x03) /* Wait time (if TCS34725_ENABLE_WEN is asserted) */4 P9 G) F- C. q4 v# o
- #define TCS34725_WTIME_2_4MS (0xFF) /* WLONG0 = 2.4ms WLONG1 = 0.029s */
5 Y7 ~. _9 l2 X# n5 {+ W3 C - #define TCS34725_WTIME_204MS (0xAB) /* WLONG0 = 204ms WLONG1 = 2.45s */
: \3 M+ q. @( y7 {% `& a" ] - #define TCS34725_WTIME_614MS (0x00) /* WLONG0 = 614ms WLONG1 = 7.4s */
2 y" z( c& ]# u% ` - #define TCS34725_AILTL (0x04) /* Clear channel lower interrupt threshold */' H1 V( d: v* ~9 n N+ D ?8 r: n
- #define TCS34725_AILTH (0x05). y4 X' Q7 k7 E' B3 G
- #define TCS34725_AIHTL (0x06) /* Clear channel upper interrupt threshold */
' [. l/ k$ G4 @ - #define TCS34725_AIHTH (0x07)! K% _7 B4 [9 q# H a
- #define TCS34725_PERS (0x0C) /* Persistence register - basic SW filtering mechanism for interrupts */0 K' V, z* Q0 l& c3 Y. ]
- #define TCS34725_PERS_NONE (0b0000) /* Every RGBC cycle generates an interrupt */- t# i& Q& g: n* a3 r' j; m
- #define TCS34725_PERS_1_CYCLE (0b0001) /* 1 clean channel value outside threshold range generates an interrupt */. x4 K. b% l5 K, f1 t" J1 Q
- #define TCS34725_PERS_2_CYCLE (0b0010) /* 2 clean channel values outside threshold range generates an interrupt */4 u" q5 V2 q D4 a6 o/ g4 Z- p
- #define TCS34725_PERS_3_CYCLE (0b0011) /* 3 clean channel values outside threshold range generates an interrupt */! U+ e1 E' e5 o1 J. u4 q4 R
- #define TCS34725_PERS_5_CYCLE (0b0100) /* 5 clean channel values outside threshold range generates an interrupt */
3 V3 s/ C% [9 a - #define TCS34725_PERS_10_CYCLE (0b0101) /* 10 clean channel values outside threshold range generates an interrupt */
( d* R3 w F9 F% w; c* B% o - #define TCS34725_PERS_15_CYCLE (0b0110) /* 15 clean channel values outside threshold range generates an interrupt */! G3 S+ \3 [2 f: u# Q8 r( e
- #define TCS34725_PERS_20_CYCLE (0b0111) /* 20 clean channel values outside threshold range generates an interrupt */) L7 P: `& [7 @! u7 i) v' c
- #define TCS34725_PERS_25_CYCLE (0b1000) /* 25 clean channel values outside threshold range generates an interrupt */
6 u, W6 \) I) w8 L6 t - #define TCS34725_PERS_30_CYCLE (0b1001) /* 30 clean channel values outside threshold range generates an interrupt */
3 b( x3 G% A6 E$ [- C - #define TCS34725_PERS_35_CYCLE (0b1010) /* 35 clean channel values outside threshold range generates an interrupt */
$ z) R4 m7 W; I' t - #define TCS34725_PERS_40_CYCLE (0b1011) /* 40 clean channel values outside threshold range generates an interrupt */
5 c' L' r- Z0 K* O S" q( D& ^ - #define TCS34725_PERS_45_CYCLE (0b1100) /* 45 clean channel values outside threshold range generates an interrupt */
1 t; }3 [. A7 D9 S - #define TCS34725_PERS_50_CYCLE (0b1101) /* 50 clean channel values outside threshold range generates an interrupt */' T* j! F9 J' J4 x# J" G2 t
- #define TCS34725_PERS_55_CYCLE (0b1110) /* 55 clean channel values outside threshold range generates an interrupt */1 P$ x; k3 ~0 `, V
- #define TCS34725_PERS_60_CYCLE (0b1111) /* 60 clean channel values outside threshold range generates an interrupt */) ?- \: Q/ E6 K( W% s( R) C
- #define TCS34725_CONFIG (0x0D). D; i, C8 k/ p7 A6 u
- #define TCS34725_CONFIG_WLONG (0x02) /* Choose between short and long (12x) wait times via TCS34725_WTIME */
: w9 H" X0 }/ B - #define TCS34725_CONTROL (0x0F) /* Set the gain level for the sensor */
: c/ `. n/ j. @" P& }5 | - #define TCS34725_ID (0x12) /* 0x44 = TCS34721/TCS34725, 0x4D = TCS34723/TCS34727 */, V) ]: v# Q# v& u. s5 o/ {
- #define TCS34725_STATUS (0x13)+ R G: d+ u0 T) I4 z+ E2 {8 m
- #define TCS34725_STATUS_AINT (0x10) /* RGBC Clean channel interrupt */& w3 a. T5 N* a# U
- #define TCS34725_STATUS_AVALID (0x01) /* Indicates that the RGBC channels have completed an integration cycle */5 x# o9 e7 o/ B9 D; ?5 z
- #define TCS34725_CDATAL (0x14) /* Clear channel data */$ C+ u. ~! U n u
- #define TCS34725_CDATAH (0x15)' b1 x2 _4 O7 v+ v6 ]
- #define TCS34725_RDATAL (0x16) /* Red channel data */
; |* r t) H2 c1 ]7 g. H, K( x - #define TCS34725_RDATAH (0x17)
, p' e! C+ f+ q5 D" v* ` - #define TCS34725_GDATAL (0x18) /* Green channel data */
6 Q% b- Z# @/ S$ M* t - #define TCS34725_GDATAH (0x19)+ T" X4 W, I% F0 u. ]1 e" w+ K
- #define TCS34725_BDATAL (0x1A) /* Blue channel data */+ T7 r9 d/ X3 Q# ~0 R$ F; U" R
- #define TCS34725_BDATAH (0x1B), Q, U, p1 \# [0 u4 f
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- #define TCS34725_INTEGRATIONTIME_2_4MS 0xFF /**< 2.4ms - 1 cycle - Max Count: 1024 */0 w" o/ e5 ]4 ?& ~6 t
- #define TCS34725_INTEGRATIONTIME_24MS 0xF6 /**< 24ms - 10 cycles - Max Count: 10240 */
& N9 x6 d# w9 X: J& Q/ K" E& C - #define TCS34725_INTEGRATIONTIME_50MS 0xEB /**< 50ms - 20 cycles - Max Count: 20480 */; V% R" g# R6 S, v) {/ e: j) E/ U
- #define TCS34725_INTEGRATIONTIME_101MS 0xD5 /**< 101ms - 42 cycles - Max Count: 43008 */: I9 s7 x$ B6 L) D; J2 o- c
- #define TCS34725_INTEGRATIONTIME_154MS 0xC0 /**< 154ms - 64 cycles - Max Count: 65535 */
$ w X8 b' R' A) O# Q6 M - #define TCS34725_INTEGRATIONTIME_240MS 0x9C /**< 240ms - 100 cycles - Max Count: 65535 */
+ ]7 m7 A5 o$ a% C$ u8 _1 S% Y - #define TCS34725_INTEGRATIONTIME_700MS 0x00 /**< 700ms - 256 cycles - Max Count: 65535 */
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) x3 Q# ?8 m/ _3 G# ]- #define TCS34725_GAIN_1X 0x00 /**< No gain */
# i* C. q5 k. I7 g& h - #define TCS34725_GAIN_4X 0x01 /**< 4x gain */
6 p( H: t- \# S$ {3 n9 E. G - #define TCS34725_GAIN_16X 0x02 /**< 16x gain */
$ w, V! ^7 u/ h* B2 h+ T - #define TCS34725_GAIN_60X 0x03 /**< 60x gain */
! K7 t% U" }: Q- K" P - /******************************************************************************/( M7 r' e$ p9 I' S
- #define TCS_SDA_IN() {GPIOB->CRH&=0xFFFF0FFF;GPIOB->CRH|=8<<12;}8 T# b! o: R7 ^ R" Q6 p
- #define TCS_SDA_OUT() {GPIOB->CRH&=0xFFFF0FFF;GPIOB->CRH|=3<<12;}
# c" ]4 m) B" I* o( g - #define TCS_SDA_READ GPIOB->IDR&(1<<11)
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9 w3 k; S" t1 ^- #define TCS_SCL_H GPIO_SetBits(GPIOB,GPIO_Pin_10)
8 `' H) [5 ~7 `2 i8 }9 E9 R9 S; H - #define TCS_SCL_L GPIO_ResetBits(GPIOB,GPIO_Pin_10)
3 o; y `# b N0 N3 S - #define TCS_SDA_H GPIO_SetBits(GPIOB,GPIO_Pin_11)& M: Z% M6 L# ]0 [/ D4 j
- #define TCS_SDA_L GPIO_ResetBits(GPIOB,GPIO_Pin_11)
; ^: _; d+ c! K I3 V - /******************************************************************************/9 i- K0 a v. ^: m6 z
- #define max3v(v1, v2, v3) ((v1)<(v2)? ((v2)<(v3)?(v3):(v2)):((v1)<(v3)?(v3):(v1)))
, b0 u! j7 q1 c; Y) } - #define min3v(v1, v2, v3) ((v1)>(v2)? ((v2)>(v3)?(v3):(v2)):((v1)>(v3)?(v3):(v1)))
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( `# |; I7 y4 U3 E. d$ f# m: U! _% l- typedef struct{) t. W0 h6 x6 j& W" b/ B
- unsigned short c; //[0-65536]; E) U8 ]+ Z2 z& F
- unsigned short r;
4 j* k* [8 E; C- v8 t* b: @ - unsigned short g;
" [$ l/ S' h+ y3 A' I! O& s - unsigned short b;4 s6 O+ j. v! P% D
- }COLOR_RGBC;//RGBC
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- typedef struct{1 F0 i! A2 e; d2 A& c
- unsigned short h; //[0,360]( E4 p: B7 C } a4 d
- unsigned char s; //[0,100]% J& u* n1 V5 Y6 J0 I
- unsigned char l; //[0,100]
: r$ L& U& g7 D8 f; z, u U - }COLOR_HSL;//HSL
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% i2 M A2 g: `8 k- COLOR_RGBC rgb;
7 J) ?) }) n0 c4 S& V+ D! O - COLOR_HSL hsl;, x4 b+ R% O: z. y
- /******************************************************************************/
& U" S: I8 k5 _: a. \& c! G4 } - void delay_s(u32 i)
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! ]' Z1 | n6 t/ ~6 z+ U7 ^ - while(i--);
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- /******************************************************************************/
8 r+ s: o9 [; y/ f - void TCS34725_I2C_Init()0 c+ i: F. D+ w; f: n
- {
/ D0 D i$ p- g( n5 s3 R5 q0 g - GPIO_InitTypeDef GPIO_InitStructure;' i9 B. h# r/ Z7 f I
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; Y( B! _6 X) R8 g! A) ~+ A - GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10|GPIO_Pin_11;//PB10/PB10=外接I2C+ y3 E9 u2 h7 ]8 `% m/ C( Y
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;//通用推挽输出
. Z/ j# Q- ?1 `) }7 l - GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//速度' h0 { e& j; P( T" Z& V
- GPIO_Init(GPIOB, &GPIO_InitStructure);//对选中管脚初始化# |; g. ^ q7 h9 G( R
- GPIO_SetBits(GPIOB,GPIO_Pin_10|GPIO_Pin_11); //高电平
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- /*********************************************/5 Y" }( `! W+ U, B. G) U; O
- void TCS34725_I2C_Start()% z9 E0 r; `! i+ ]
- {
7 P& A9 f& X4 v* q, U6 t D - TCS_SDA_OUT();; R9 @9 O3 f& T5 t. d! y2 N
- TCS_SDA_H;0 ]7 |2 L- t. [- P J
- TCS_SCL_H;
- e* F1 G" ~* w* v0 \/ ?5 l P - delay_s(40);//delay_us(4);
- ~4 E3 _' t# [3 r1 z - TCS_SDA_L;- B Z7 x) \" u. U3 U" B
- delay_s(40);//delay_us(4);
0 T9 C* a! D6 | - TCS_SCL_L;3 \: i9 e; Z. Q3 W: F2 c$ B3 P# C# ~
- }
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' x& Q- n- z# D& _# S" g9 | - void TCS34725_I2C_Stop() l6 h k9 k, @
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- TCS_SDA_OUT();# R2 l! Y& \: H# I
- TCS_SCL_L;! M/ O' k( W! i# `% j
- TCS_SDA_L;
1 }- u6 C1 r u% p - delay_s(40);//delay_us(4);
4 l1 f; e C* z# Q: u& k - TCS_SCL_H;
0 N3 F/ Z; t( j# P" h - TCS_SDA_H;
U5 A, w- V" {6 S3 J4 r' {+ Q - delay_s(40);//delay_us(4);
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* ]3 q( ^1 F, v! s, f+ V - /*********************************************/
. \# x# L4 L% w* C: r) } - //返回值:1,接收应答失败
; D% X ^& u( \5 s8 t9 C - // 0,接收应答成功4 M8 q1 H( T/ }5 g* E7 [+ f
- u8 TCS34725_I2C_Wait_ACK()& {3 z" j! A6 l; o6 h$ A5 e
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- u32 t=0;! B7 \: Y, F" J% R
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- TCS_SDA_IN();//SDA设置为输入
" y, y- E, c* x% y - TCS_SDA_H;
' {3 g2 U+ m. v) e+ c - delay_s(10);//delay_us(1);
; s" d* y- m) D( j - TCS_SCL_H; % V9 i8 p L2 W) }. O; L! I
- delay_s(10);//delay_us(1);
, D* C9 V' {) K" y4 x - while(TCS_SDA_READ)
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- t++;" g* l1 m$ V/ S7 ~8 V& W
- if(t > 250)
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# F" `; L2 {; ^, {% I( I; n - TCS34725_I2C_Stop();- P3 _) f% m- X( s0 I' k
- return 1;
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- }
- K# d6 S, u' B- v2 Z* _4 K6 [' r - TCS_SCL_L;
0 j' `8 e; Q& _6 D6 Y& v2 d - return 0; . A' C( o; h6 G; B Q1 s: E2 W5 b
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- /*********************************************/0 R0 I% I. ^* _
- //产生ACK应答. O2 e0 c3 a: R5 J( q6 ~
- void TCS34725_I2C_ACK()3 N1 o6 g, H7 O$ B; D
- {5 v% N5 i& k0 S
- TCS_SCL_L;( A9 P. O `6 g A- ^( V: Q/ ], j
- TCS_SDA_OUT();//sda线输出
5 ]+ c; f$ u# R* |/ d: d' M# a% Y - TCS_SDA_L;
6 a/ M+ \$ A$ r! W$ |. a3 @ - delay_s(20);//delay_us(2);
( j$ U% g. }. Y! z: U* x i5 g - TCS_SCL_H;
X5 ^" x$ T2 l/ p# q; @# m; r - delay_s(20);//delay_us(2);
4 V$ W7 J) q' K- Q1 C5 M - TCS_SCL_L;
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% J2 O- T5 U: ~7 [! r7 D* Y - /*********************************************/
: t4 B K) m' Z& R" A9 D - //不产生ACK应答 ! B6 L, M7 B3 t6 ]
- void TCS34725_I2C_NACK()
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X( ~* @+ Q3 a0 @' H) l0 L) q - TCS_SCL_L;
) O( z$ \% _+ \ - TCS_SDA_OUT();//sda线输出8 `& u2 \) `0 x9 E
- TCS_SDA_H;7 h) ]: Y: C0 Q* z) y: V
- delay_s(20);//delay_us(2);
9 p( q! \2 U* @4 S - TCS_SCL_H;, n0 c: @; x( g! F" j1 W
- delay_s(20);//delay_us(2);
1 t0 c2 t3 ^* K - TCS_SCL_L;- _$ l9 s3 I) A( ^& z4 |* s
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- /*********************************************/
q8 Q! O6 w6 O) k) i) e6 w4 o - //I2C发送一个字节 1 z- _1 g- Y) t1 B! A3 Z
- void TCS34725_I2C_Send_Byte(u8 byte)
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0 Y/ I9 W2 [% u3 _/ b7 C - TCS_SDA_OUT();//sda线输出3 r4 W8 { {( L: d( }
- TCS_SCL_L;//拉低时钟开始数据传输+ G5 C# S) F4 C. i7 N9 v: A2 b) G O
- for(i = 0; i < 8; i++)
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1 A) Y5 O' r. R2 ~ - if(((byte&0x80)>>7)==1)TCS_SDA_H;9 _% a- g' \1 Y+ X6 ^4 J
- else& Q7 U5 C2 o/ x! ]; J4 M
- TCS_SDA_L;
* k! l$ o. r- W$ W! Y. T: i6 B& b - byte <<= 1;
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- delay_s(20);//delay_us(2);% u4 z5 g- ] z2 I' p
- TCS_SCL_H;6 \& G T8 P' C. W' v+ J
- delay_s(20);//delay_us(2);
6 ~7 D9 q5 x1 j! A @! b# b6 p$ ` - TCS_SCL_L;
0 c, L* i. R, e0 D6 J. q: E5 Y( Z - delay_s(20);//delay_us(2);
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- /*********************************************/
9 ?/ o0 o. z+ a1 G# K - //读1个字节,ack=1时,发送ACK,ack=0,发送nACK
* i% v$ c2 o4 @- @ - u8 TCS34725_I2C_Read_Byte(u8 ack)
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- u8 i,receive = 0;% l/ `7 I; {4 b5 ^
-
: l; G$ B" F% X8 O+ F) y - TCS_SDA_IN();6 Q( a4 i, U' i6 V8 B0 |
- for(i = 0; i < 8; i++)
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- TCS_SCL_L;
0 k5 ^# Y% ?/ i. \2 f - delay_s(20);//delay_us(2);
/ }8 |# v8 d6 p9 k8 a. u - TCS_SCL_H;3 |! R8 I, F+ T w6 @+ r
- receive <<= 1;# w, Z2 ~, A) J7 L
- if(TCS_SDA_READ) receive++;+ A6 f9 H9 {# Q0 V
- delay_s(10);//delay_us(1);- w+ P( }: G* O5 v$ t' f: ^
- }
0 Y- L/ `9 P9 ^$ i8 Z+ E8 K a - if (!ack) TCS34725_I2C_NACK();//发送nACK
; m5 @8 X4 h3 w c - else TCS34725_I2C_ACK(); //发送ACK ' H; P' y/ G8 f9 Z; q
- , D& g* D( Z4 O: C, R
- return receive;
! |2 Q. p# t2 }/ E4 Z - }
. K' W9 R6 x% e5 U% u - /*********************************************/
1 L/ c9 ]7 r, O4 p9 V* o8 u - /*******************************************************************************
2 z* ~( W1 @4 w' r - * @brief Writes data to a slave device.) G2 T- q! i. q ^) {
- *
' q! J2 {; g7 P& | - * @param slaveAddress - Adress of the slave device.* s8 n0 W$ G5 Q# O1 t3 r
- * @param dataBuffer - Pointer to a buffer storing the transmission data.5 F$ o7 C I3 u& G" M! m9 f
- * @param bytesNumber - Number of bytes to write.
$ Q% G. G# W7 K - * @param stopBit - Stop condition control.
6 @# U2 S( ~ f0 ~% S - * Example: 0 - A stop condition will not be sent;
/ x" E' X8 w& @9 I" k: t( s - * 1 - A stop condition will be sent.5 H! \2 [# c# y/ h/ \ d2 o
- *******************************************************************************/5 |, D8 V6 M# c( |
- void TCS34725_I2C_Write(u8 slaveAddress, u8* dataBuffer,u8 bytesNumber, u8 stopBit)* `* G! A; v" C% E
- {
- N3 [% b3 R- S" o5 i5 h+ | - u8 i = 0;
: _/ N' V% i% l. ]% V- }8 ~/ b -
8 @$ ?( V+ E n6 ^& N - TCS34725_I2C_Start();2 n, M$ w8 z K
- TCS34725_I2C_Send_Byte((slaveAddress << 1) | 0x00); //发送从机地址写命令6 t6 a0 e' d$ |, p
- TCS34725_I2C_Wait_ACK();
! x( u8 u$ Z: x, p - for(i = 0; i < bytesNumber; i++)9 a* J0 O& d* l# W7 A2 X) n
- {
5 h( p( g1 C. {" U$ y - TCS34725_I2C_Send_Byte(*(dataBuffer + i));$ M8 N ~1 u% T8 E" g& h
- TCS34725_I2C_Wait_ACK();
7 E: H/ d" i2 r- {% | - }
! ~$ g* A8 z6 H/ s: D" l0 S - if(stopBit == 1) TCS34725_I2C_Stop();
9 N Q- J. d: I& Y3 a. f - }- @! _- ~7 K! F5 b* [7 S8 H
- /*******************************************************************************
# b( k2 G8 o& H; q: S - * @brief Reads data from a slave device.. N% B0 ~- V$ ^ y
- *
. [" e4 k, B T/ ?7 [/ [* i - * @param slaveAddress - Adress of the slave device.
% Y+ m$ u; Z- w/ G - * @param dataBuffer - Pointer to a buffer that will store the received data.# e$ l( i H N/ \1 |: |
- * @param bytesNumber - Number of bytes to read.0 u/ T! v% g x- t5 Y( I W
- * @param stopBit - Stop condition control.
* D9 i8 h7 ^+ j3 e: L' E/ P - * Example: 0 - A stop condition will not be sent;2 m& ]' T! ?" T) m1 T4 L; ~* J
- * 1 - A stop condition will be sent.8 } Z6 w% z* i0 y7 Q; h1 \ i
- *******************************************************************************/0 c# p2 L0 u4 l: F
- void TCS34725_I2C_Read(u8 slaveAddress, u8* dataBuffer, u8 bytesNumber, u8 stopBit)' v) \7 S) {+ f* ?3 M
- {
8 w' D. W; Y( z# K- ^$ V1 y/ ` - u8 i = 0;$ p1 G+ D$ u# W4 x/ A# v
-
6 o( P. `6 W/ {9 @. G! @ - TCS34725_I2C_Start();
) B8 s+ S7 |. M# |( n( t5 \ - TCS34725_I2C_Send_Byte((slaveAddress << 1) | 0x01); //发送从机地址读命令3 b! m" ]& D6 l: B0 x" P
- TCS34725_I2C_Wait_ACK();! ?" t0 y0 o) M7 n; D1 x
- for(i = 0; i < bytesNumber; i++)
) n4 @5 N' N. D' R9 o- I - {
( b: I6 H# K1 @ - if(i == bytesNumber - 1)6 C4 [0 F* }, g. l( k ]
- {3 v, S* C" F- o1 ^; U* Y6 u
- *(dataBuffer + i) = TCS34725_I2C_Read_Byte(0);//读取的最后一个字节发送NACK
8 l- g, T7 }, x6 {3 k - }
, _& ~0 r! `; _+ ] - else1 S( h/ J& ~8 `4 D0 Y. f9 h: x
- {
( I" Q, Z. J6 P' a - *(dataBuffer + i) = TCS34725_I2C_Read_Byte(1);
1 w! L. f* a) A2 L2 V, t; M* i - }8 x; p, f- |/ l8 |
- }
) D* j: M& J, y5 q - if(stopBit == 1) TCS34725_I2C_Stop();, D) h, G* V1 d: Y5 E1 j- j2 p
- }% Y1 l1 W8 v; j B$ n: l5 \: I
- /*******************************************************************************1 x: S. T3 ~: v- { g, n& }1 `( B
- * @brief Writes data into TCS34725 registers, starting from the selected, ^1 h o! n* W
- * register address pointer.
0 t/ M Y a+ @% Q - *; g8 @# R" [: \
- * @param subAddr - The selected register address pointer.
2 |3 n9 N7 E+ H& f; U& y* m) b - * @param dataBuffer - Pointer to a buffer storing the transmission data.
& H. |5 }! A# v: t! X - * @param bytesNumber - Number of bytes that will be sent.7 |. @ Z0 }' Z* v
- *3 m# \# q% w/ x8 |" `' M0 W
- * @return None.
% |' T( H& @7 i: m$ C3 N3 F( U9 ] - *******************************************************************************/
( k7 i2 `& x- h9 _9 d6 z; T - void TCS34725_Write(u8 subAddr, u8* dataBuffer, u8 bytesNumber): z, y. u/ s4 W
- {
8 c( d4 v$ Q) x - u8 sendBuffer[10] = {0, };
# L& s3 G6 ^# W4 K7 G7 N - u8 byte = 0;, r( k& P9 O) o& v2 V) H# U! @
- - O1 K$ [+ b/ C, s
- sendBuffer[0] = subAddr | TCS34725_COMMAND_BIT;' X/ @3 h" P* r, w6 N G k
- for(byte = 1; byte <= bytesNumber; byte++)- [7 n c9 c( T
- {
- t1 D4 [1 b. S) n5 ?% C X' B( | - sendBuffer[byte] = dataBuffer[byte - 1];
# n" t9 n g. a, R4 J0 [ - }
6 B4 n/ J2 y6 Q - TCS34725_I2C_Write(TCS34725_ADDRESS, sendBuffer, bytesNumber + 1, 1);/ y% C3 m+ b p7 ]6 m5 w3 E) [$ m
- }8 l S' I. g8 g: w( M
- /*******************************************************************************) T' l# R% x Z; u/ |
- * @brief Reads data from TCS34725 registers, starting from the selected1 Q u' ]. M3 i: z' W
- * register address pointer.; ?( x5 o! C# d+ u2 w
- *- z* p( N3 \: X. J% ~( ]3 D1 X1 u
- * @param subAddr - The selected register address pointer.
) J- O- H1 F- p: q- k$ a$ _ - * @param dataBuffer - Pointer to a buffer that will store the received data.
* A& b3 j/ o' g( ~7 S1 X! i. s4 C - * @param bytesNumber - Number of bytes that will be read.; T: {: s! Y1 q. R1 C4 q
- *3 ?% V) Z) G4 w9 R: C5 v
- * @return None. w. ^! T* t( @9 K [9 N' ~% d m
- *******************************************************************************/
+ B2 F5 n9 g& g& Q, O; ] - void TCS34725_Read(u8 subAddr, u8* dataBuffer, u8 bytesNumber)5 N( q/ w% J5 G& m
- {
+ a0 _, o# C# B4 U F- ?! h - subAddr |= TCS34725_COMMAND_BIT;" Y! _5 T, w! Y- j- B0 L
- 8 f5 w7 o) X+ m- _
- TCS34725_I2C_Write(TCS34725_ADDRESS, (u8*)&subAddr, 1, 0);
3 p: u0 U6 s# ~5 k0 ]8 ? - TCS34725_I2C_Read(TCS34725_ADDRESS, dataBuffer, bytesNumber, 1);
1 N8 M; j7 Z- z+ S - }6 `. _6 B, u" ]. D+ f
- /*******************************************************************************$ N. e9 T0 H, _8 U% l* ~+ z. m
- * @brief TCS34725设置积分时间3 g$ p R2 V3 z. H/ b- M
- * Y" A6 h1 l( G; i, u8 a
- * @return None5 y+ Y5 c0 C$ f! F) H& b% [
- *******************************************************************************/; K* j6 a9 j# g& e: _: G& A
- void TCS34725_SetIntegrationTime(u8 time)' u* W$ C; S+ {
- {
! V. h- M4 k# S: ]5 b* f0 K2 d - TCS34725_Write(TCS34725_ATIME, &time, 1);; i& E$ W. m0 U
- }' E4 e p/ _. B) P
- /*******************************************************************************
6 L* G4 l7 \9 ?* d - * @brief TCS34725设置增益$ W- m: {5 K; x. a2 U, T
- *
& p! L0 C& j5 ~. O$ O0 c Q - * @return None! F, S9 B( k; K, g5 u
- *******************************************************************************/% c# W/ ] T3 F# Q& ^
- void TCS34725_SetGain(u8 gain)% k* }. A4 F5 c4 |/ n. W
- {
+ M6 I" t$ g& @' K# { }7 b - TCS34725_Write(TCS34725_CONTROL, &gain, 1);
" k8 w8 Q" A2 G" P p - }4 ^0 L/ P9 \; w2 P
- /*******************************************************************************/ _ [2 `1 p4 I
- * @brief TCS34725使能' K( S+ e. @" n
- *
" I+ @/ ], E5 |& B - * @return None
$ z2 n/ o+ J: R& z% S; x( S - *******************************************************************************/
3 j! Q# V( q2 p" j - void TCS34725_Enable(void)
' Z1 f1 t- i# v3 X - {
6 v/ k# }8 t: G* w - u8 cmd = TCS34725_ENABLE_PON;$ H7 s' p: y$ j. ]
- 5 E8 x, s6 Q" o9 e! f
- TCS34725_Write(TCS34725_ENABLE, &cmd, 1);( u1 F1 q* o7 K' q
- cmd = TCS34725_ENABLE_PON | TCS34725_ENABLE_AEN;
& r8 \9 v9 w( D. T0 H" E' M$ B! Z - TCS34725_Write(TCS34725_ENABLE, &cmd, 1);; q- D! S$ H1 e" p7 A/ U
- //delay_s(600000);//delay_ms(3);//延时应该放在设置AEN之后
: G0 U0 v, P* j& o6 D( E! z4 U; V6 { - }2 | @2 }$ l& P
- /*******************************************************************************( h9 ^, n3 L, R. Z. G7 p2 R
- * @brief TCS34725失能
3 M) Z7 Y# c; N( N% d0 G3 ~ - *, P s; {/ B: W3 T* u
- * @return None% G. O0 O1 Q3 D3 c* E
- *******************************************************************************/
2 p- g2 S5 y, G! G/ v& Y - void TCS34725_Disable(void)8 p3 _) x. ?" w* m5 |
- {% |$ L% v( ~0 A' u' P) y& Z: w
- u8 cmd = 0;: D! }- N+ J! p7 p! Y$ e1 _: ~4 m
-
2 J2 o, v8 r5 Z/ ]: ? - TCS34725_Read(TCS34725_ENABLE, &cmd, 1);! x7 U9 H4 g7 J0 s
- cmd = cmd & ~(TCS34725_ENABLE_PON | TCS34725_ENABLE_AEN);! [! u- [6 D A A
- TCS34725_Write(TCS34725_ENABLE, &cmd, 1);$ i# _7 G+ D) E! @
- }: E7 X4 C, D& T; B
- /*******************************************************************************! t% S7 i7 w3 ~" @( g# n
- * @brief TCS34725初始化
5 y& n8 q8 K1 }* O - *" W6 h1 N. G# W4 w3 Q% g9 v
- * @return ID - ID寄存器中的值
, [4 |- X1 D" B. g) m4 Q4 | - *******************************************************************************/
. Y: i( o2 R5 E/ l$ I( C+ w- t C - u8 TCS34725_Init(void)9 D1 r0 f/ A0 T+ E8 f8 H$ h1 J
- {
) |# |( q- e4 j! k" d+ f3 m7 _ - u8 id=0;8 d+ L$ J$ ?: V/ g$ O) c, j% M
- / f% x7 ~1 K0 B( I- s3 p, n
- TCS34725_I2C_Init();
7 I4 K* M; X T& p" u I( f# ^5 ~ - TCS34725_Read(TCS34725_ID, &id, 1); //TCS34725 的 ID 是 0x44 可以根据这个来判断是否成功连接+ i3 T0 P/ f6 c
- if(id==0x44)1 }/ g5 x9 Y4 |* ]) b j. [, {# @
- {$ v& l1 C, p# {
- TCS34725_SetIntegrationTime(TCS34725_INTEGRATIONTIME_240MS);
* d4 `, Z% ?4 S u1 Q+ k - TCS34725_SetGain(TCS34725_GAIN_1X);: \, [+ ]* m$ F, W5 |4 g. P
- TCS34725_Enable();
9 }8 O. U' `! N: G; q& y - return 1;
. q7 O) y% i4 @ - }8 i3 {& S i2 ^0 z; d( T
- return 0;( i! @- I! c- Z2 v% S0 v! o& d) ^
- }
+ G9 k3 D$ K4 b- c5 h7 \$ E7 l/ k8 ^ - /******************************************************************************** r9 `9 F$ ~% \4 A" }
- * @brief TCS34725获取单个通道数据; Y. B0 J* W# o0 g2 J' O$ P
- *, H8 u$ G/ C& Q' n i) i! ~: T+ y
- * @return data - 该通道的转换值
8 F$ y {- G5 X6 ]+ K6 u - *******************************************************************************/, x" L% T/ u' X' t3 H6 z: p/ R
- u16 TCS34725_GetChannelData(u8 reg)
& |0 w) X0 F6 o2 Y/ x2 S# B3 V - {
4 m5 w3 p7 h2 G+ H4 d; c' G2 ] - u8 tmp[2] = {0,0};
# ^5 }" C! k3 B( \, y: x$ c - u16 data;
* o- y0 R! O7 I( q' L5 i - % H0 w t! x8 f8 N* l {( {
- TCS34725_Read(reg, tmp, 2);/ Y/ ? o" @# c% P9 U
- data = (tmp[1] << 8) | tmp[0];( T+ D* Z6 K; t+ S. w9 j
- , y( `# f; B' p) [
- return data;- G6 q' W. D- e+ `. v1 o8 X: h. e
- }
$ o0 M0 W: } B1 x. Y5 d - /*******************************************************************************
2 O8 h {' |+ q: M k$ d - * @brief TCS34725获取各个通道数据
4 z5 h9 `4 v% Q. j4 E/ m% a$ a - *8 r; ~7 Q( z- d4 W9 C
- * @return 1 - 转换完成,数据可用
0 k' C* n& Y# `& D - * 0 - 转换未完成,数据不可用# L% L: B# N+ Q# B0 _" B
- *******************************************************************************/7 R1 }+ Q+ ~; v, W, _4 r
- u8 TCS34725_GetRawData(COLOR_RGBC *rgbc)
! L+ @2 z Q4 P$ h& g# z2 ?; ? - {2 P. Y( b4 i5 j3 m5 F) V! N
- u8 status = TCS34725_STATUS_AVALID;7 f r9 u) f! M
-
( Q9 R& y2 e% K# |. m3 Y - TCS34725_Read(TCS34725_STATUS, &status, 1);/ e v3 z- d% y: L1 f& v
- ! ]% s8 L4 e/ F% |& m/ t: I/ d
- if(status & TCS34725_STATUS_AVALID)' H! t0 N9 Z( R9 K# ~8 W" O. m: A+ @
- {, Q6 `* [ z+ ^# @3 J
- rgbc->c = TCS34725_GetChannelData(TCS34725_CDATAL); 7 b8 B# ]. U. q# e, [
- rgbc->r = TCS34725_GetChannelData(TCS34725_RDATAL); 3 K3 ?+ e& u2 B' A0 B( x- @6 f1 R
- rgbc->g = TCS34725_GetChannelData(TCS34725_GDATAL); ) }( M: N/ G$ w% [6 M) Y# l7 ^
- rgbc->b = TCS34725_GetChannelData(TCS34725_BDATAL);/ @% n3 H+ F; R; R/ j& D( A5 Z, G
- return 1;
' U, _ c8 H7 U- c4 e% S - }! ?9 Q! {: U# F
- return 0;* \4 ?; N" |8 T
- }
$ R" ]0 Z/ z j0 Q2 H8 }. I; c P4 n - /******************************************************************************/
; r2 N6 e7 w" K ~" ] - //RGB转HSL, a% V! c: ^( X
- void RGBtoHSL(COLOR_RGBC *Rgb, COLOR_HSL *Hsl)( ]3 M: j$ H& z
- {6 D$ R8 `! E) K8 @
- u8 maxVal,minVal,difVal;
- k1 \3 }5 P, f9 l0 ~$ U - u8 r = Rgb->r*100/Rgb->c; //[0-100]3 ^3 E% o g0 J/ z* x2 @; W
- u8 g = Rgb->g*100/Rgb->c;# I# B5 k# t) T8 [" r# | x
- u8 b = Rgb->b*100/Rgb->c;+ A6 `6 z* a" Q; y% D4 w3 `* T: v
- , C# D$ h0 X2 t: C+ b
- maxVal = max3v(r,g,b);
6 Y- o0 r0 ]9 `& F - minVal = min3v(r,g,b);8 ~, d. a8 H/ X5 F+ Q
- difVal = maxVal-minVal;
5 q1 H% Q; y7 \* g - ; |: J' `3 s7 q. T& M
- //计算亮度
: e8 n9 P% c p - Hsl->l = (maxVal+minVal)/2;
$ H* J4 Q, @- j x. @* O -
( f0 w' H5 t; e* u* M - if(maxVal == minVal)//若r=g=b,灰度
% U8 G; T% d8 x. P5 D8 u6 I3 W - {
$ P: _; |% b' _6 b! `3 L0 W - Hsl->h = 0;
% o Q5 ~" g. G# G. b* P" \" K - Hsl->s = 0;
% {6 O/ f7 O$ ?7 q - }& g1 b- v- m: J! D- [, `' }
- else
9 o1 Q, q; e) \) k" R - {
6 L# `( ^ M; p& w9 X1 s/ I1 l - //计算色调: w& @8 Q( j, _6 S
- if(maxVal==r)* X3 A5 k' Q# P2 N/ d
- {
$ n' A1 b( g+ Y+ e& g F - if(g>=b)
) @) p- I4 O# g, C1 @ y8 e - Hsl->h = 60*(g-b)/difVal;
* ^# }' Z5 s! W& K - else* M8 X) `- b9 o; ?: N z( V% S" t
- Hsl->h = 60*(g-b)/difVal+360;" ~" n# V% G8 U4 Z
- }2 I$ c" [3 {' I0 U' Y
- else
; [) {) }; S" Z0 X: A - {% e) R+ S8 v! {) p
- if(maxVal==g)Hsl->h = 60*(b-r)/difVal+120;( b5 M$ Z' {8 e( r3 s4 q: K
- else
$ Q4 S1 C: B5 u! N; g! i& @ - if(maxVal==b)Hsl->h = 60*(r-g)/difVal+240;
7 Q* O7 o4 z3 q& K - } |% C! s7 K0 P: h- m; ?
-
, ]! R+ J0 w7 g2 {( p& a - //计算饱和度" [1 r* e$ Z: K- t& p; f' T
- if(Hsl->l<=50)Hsl->s=difVal*100/(maxVal+minVal); //[0-100]
; L* Y ^$ V" P" L: m - else6 I* N& H. v( h
- Hsl->s=difVal*100/(200-(maxVal+minVal));
+ N1 T) O# C! Q - }
+ }: Z5 o5 C) K! R2 E - }* D5 d, O' y3 y7 O; S% {6 F9 @. x$ f
- /******************************************************************************/
复制代码 , X& p9 j4 G' \6 r) x7 N( i
使用时只需调用三个子程序:
' v* i7 o7 X1 F" H' Y' K# F! n4 B: c5 f2 c4 h
1、TCS34725_Init();
1 r, u( Z* G6 a; d0 ^% |
2 v, l! v5 r, h' H* N! \0 A# W' P2、TCS34725_GetRawData(&rgb);
$ z' J/ e5 I7 Q2 i* X( U
( E F* d I1 w3 R! m3、RGBtoHSL(&rgb,&hsl);
9 m5 G& E9 @3 f( d% T9 i
) [+ \; v$ t" e8 z! |把数据打印出来" \: O( [* q/ w }' _
7 @$ ]' N$ `$ w5 Iprintf("R=%d G=%d B=%d C=%d\r\n",rgb.r,rgb.g,rgb.b,rgb.c);
! ~4 z5 b5 d3 G$ ~: t9 @% A/ e* S) P5 D0 v% P! I, E
printf("H=%d S=%d L=%d\r\n",hsl.h,hsl.s,hsl.l);' W* v( i+ V# V% |5 G t
+ ?+ |1 y$ s, a$ h0 T* ~
初始化中读取颜色的间隔是50ms,所以读取速度不要太频繁. z3 n8 [. Q4 d/ u4 x( T5 ?
/ I4 Q& Y9 i: ~% B! K
3 t& [2 ?7 G7 E, m
! l) I" Y, p4 X# ~7 H. T; M
|