Zx relay16

ZX-RELAY16 ºÍà ´ÃÕàÅ 16 ª ͧ¼ Ò¹ÃкººÑÊ I2C

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ZX-RELAY16 ºÍà ´ÃÕàÅ 16 ª ͧ¼ Ò¹ÃкººÑÊ I2C ZX-RELAY16 à» ¹ºÍà ´¢ÑºÃÕàÅ 16 ª ͧ·Õ¤è Ǻ¤ØÁ¼ Ò¹ÃкººÑÊ I2C â´Âº¹µÑǺÍà ´ãª äÍ«Õ¢ÂÒ¾Íà µ ¼ Ò¹ÃкººÑÊ I2C àºÍà MCP23016 ·íÒ˹ Ò·Õ¤è Ǻ¤ØÁ¡Ò÷íÒ§Ò¹·Ñ§é ËÁ´ ÃÙ»·Õè 1 áÊ´§Ë¹ ҵҢͧºÍà ´ ZXRELAY16 Ê Ç¹ÃÙ»·Õè 2 à» ¹Ç§¨ÃÊÁºÙó ¢Í§ºÍà ´ ZX-RELAY16 à¹×Íè §¨Ò¡ãª äÍ«Õ··Õè Òí §Ò¹¼ Ò¹ÃкººÑÊ I2C ¨Ö§·íÒ ãË ÊÒÁÒöµ ; ǧºÍà ´¢ÑºÃÕàÅ ZX-RELAY16 ãË ·Òí §Ò¹Ã ÇÁ¡Ñ¹ä´ ÁÒ¡¶Ö§ 8 ºÍà ´ â´Â㪠ÊÒÂÊÑ­­Ò³ SDA áÅÐ SCL à¾Õ§ªØ´à´ÕÂÇ áÅСíÒ˹´áÍ´à´ÃʢͧᵠÅкÍà ´ãË áµ¡µ Ò§¡Ñ¹´ Ç¡ÒÃàÅ×Í¡¨ÑÁê à»Íà º¹ºÍà ´

1. ¤Ø³ÊÁºÑµ¢Ô ͧºÍà ´ ZX-RELAY16 l

㪠äÍ«Õ MCP23016 ¢Í§ Microchip à» ¹äÍ«Õ¢ÂÒ¾Íà µ 2 ·ÔÈ·Ò§ (ÍÔ¹¾Øµ/àÍÒµ ¾µØ ) ¼ Ò¹ÃкººÑÊ I2C

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µ ; ǧ¡Ñ¹ä´ 8 ºÍà ´ ·íÒãË ÊÒÁÒö¢ÑºÃÕàÅÂ ä´ 128 µÑÇ´ ÇÂÊÒÂÊÑ­­Ò³¤Çº¤ØÁà¾Õ§ÊͧàÊ ¹

¨Ø´µ Í˹ ÒÊÑÁ¼ÑÊÃÕàÅ ໠¹à·Íà Á¹Ô ÍźÅçÍ¡ Áդú·Ñ§é ¨Ø´µ Í»¡µÔà» ´Ç§¨Ã (NO) áÅл¡µÔµÍ ǧ¨Ã (NC) ÊÒÁÒö㪠䢤ǧà¾×Íè µ ÍËÃ×ͻŴÊÒµ Íä´ §Ò  l

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¾Ô¡´Ñ ˹ ÒÊÑÁ¼ÑʢͧÃÕàÅ 220Vac/5A ¢ÑºâËÅ´ä´ Ê§Ù ÊØ´ 600 Çѵµ µÍ ª ͧ

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¨Ø´µ ÍÃкººÑÊ I2C Ẻ IDC µÑǼÙ/ µÑÇàÁÕÂáÅÐẺ JST 3 ¢Ò

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¢¹Ò´ºÍà ´ 15x8 ૹµÔàÁµÃ

¨ÑÁê à»Íà àÅ×Í¡áÍ´à´ÃʢͧºÍà ´

¨Ø´µ ÍẺ IDC µÑǼÙ/ µÑÇàÁÕ SCL ¨Ø´µ ÍẺ JST SDA ¨Ø´µ ÍẺ JST

ÃÙ»·Õè 1 áÊ´§Ë¹ ҵҢͧ ZX-RELAY16 ºÍà ´¢ÑºÃÕàÅ 16 ª ͧ¼ Ò¹ÃкººÑÊ I2C

2 l ZX-RELAY16

ºÍà ´ÃÕàÅ 16 ª ͧ¼ Ò¹ÃкººÑÊ I2C

15 SDA 14 SCL +5V

17 16

LED6

LED7

IC1 Vss MCP23016 Vss

R12 1.5k

RY9 R13 1.5k

A1

LED9

A0

R14 1.5k

RY10

LED10

6

INT IC3 ULN2803 1 GP1.0 2 GP1.1 3 GP1.2 4 GP1.3 10 GP1.4 11 GP1.5 12 GP1.6 13 GP1.7

R15 1.5k

+VL 10

1 I1 2 I2 3 I3 4 I4 5 I5 6 I6 7 I7 8 I8

18 Q1 17 Q2 16 Q3 15 Q4 14 Q5 13 Q6 12 Q7 11 Q8

R16 1.5k LED12 R17 1.5k

R18 1.5k LED14 R19 1.5k

R20 1.5k LED16

D5 1N5819 D6 1N4001

K21 Supply +12Vdc

IC4 7805

C3 220/25V

C4 0.1/63V

C5 47/16V

+VL C7 220/16V

C6 0.1/ 63V

RY12

RY13

LED13

LED15

SW1 POWER ON / OFF

RY11

LED11

9

D1-D4 1N4001 x4

RY8

NO C NC NO C NC NO C NC

K6 RELAY2 K7 RELAY3

+12V A2

JP3 JP2 JP1 A2 A1 A0

J1 DC INPUT 12Vdc

RY7

LED8

R4 4.7k*4 18

RY6

R10 1.5k

NO C NC

+5V

ÃÙ»·Õè 2 ǧ¨ÃÊÁºÙó ¢Í§ºÍà ´ ZX-RELAY16 «Ö§è ÁÕäÍ«ÕàºÍà MCP23016 à» ¹ËÑÇã¨

RY14

RY15

RY16

NO C NC NO C NC NO C NC NO C NC NO C NC NO C NC

K13 RELAY9

8 19

+5V

LED5

R11 1.5k

9

RY5

K14 RELAY10

K3 SCL

LED4 R9 1.5k

NO C NC

K15 RELAY11

C2 33pF

IC2 ULN2803

CLK

RY4

R8 1.5k

K16 RELAY12

9

18 Q1 17 Q2 16 Q3 15 Q4 14 Q5 13 Q6 12 Q7 11 Q8

K17 RELAY13

R3 3.9k

K2 SDA

1 I1 2 I2 3 I3 4 I4 5 I5 6 I6 7 I7 8 I8

K18 RELAY14

R2 3.9k

10 21 GP0.0 22 GP0.1 23 GP0.2 24 GP0.3 25 GP0.4 26 GP0.5 27 GP0.6 28 GP0.7

NO C NC

NO C NC

K19 RELAY15

R1 4.7k

+5V SDA SCL GND

20 Vdd

LED3

NO C NC

K20 RELAY16

K1A/1B IC EXPANSION

RY3

R7 1.5k

+VL

NO C NC

K8 RELAY4

C1 0.1 F

R21 510

LED2

K9 RELAY5

+5V

LED21 POWER

K10 RELAY6

RY2

R6 1.5k

NO C NC

K11 RELAY7

LED1

K12 RELAY8

RY1 R5 1.5k

K5 RELAY1

+VL

ZX-RELAY16 ºÍà ´ÃÕàÅ 16 ª ͧ¼ Ò¹ÃкººÑÊ I2C

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2. MCP23016 äÍ«Õ¢ÂÒ¾Íà µÍÔ¹¾ØµàÍÒµ ¾µØ ¼ Ò¹ÃкººÑÊ I2C MCP23016 à» ¹äÍ«Õ¢ÂÒ¾Íà µÍÔ¹¾ØµàÍÒµ ¾µØ ¢¹Ò´ 16 ºÔµ ¼ Ò¹ÃкººÑÊ I2C ·ÕÊè ÒÁÒö¡íÒ˹´ãË à» ¹ÍÔ¹¾ØµËÃ×ÍàÍÒµ ¾µØ ä´ Í ҧÍÔÊÃÐ â´ÂÁÕ¤³ Ø ÊÁºÑµ·Ô ¹Õè Ò Ê¹ã¨´Ñ§¹Õé

¢Ò¾Íà µà» ¹áºº 2 ·ÔÈ·Ò§ ¤Çº¤ØÁà» ¹ÍÔ¹¾ØµËÃ×ÍàÍÒµ ¾µØ ä´ µÅÍ´àÇÅÒ ÊÀÒÇÐàÃÔÁè µ ¹à» ¹ÍÔ¹¾Øµ l Ê×Í è ÊÒô ÇÂÃкººÑÊ I2C ´ ÇÂâËÁ´¤ÇÒÁàÃçÇÊÙ§ä´ l ÁÕ¢ÒàÅ×Í¡áÍ´à´ÃÊ 3 ¢Ò à¾×Í è ãË ÊÒÁÒöµ ; ǧäÍ«Õä´ 8 µÑÇâ´Â㪠ºÊÑ I2C à´ÕÂǡѹ l ¢Ò¾Íà µÊÒÁÒö¢Ñº¡ÃÐáÊ·Ñ§é «Íà ÊáÅЫԧ¡ ä´ 25mA µ Í¢Ò l ÁÕ¢ÒÍÔ¹àµÍà û Ñ µ Ẻà´Ã¹à» ´ ·íÒ§Ò¹àÁ×Íè ÁÕ¡ÒÃà»ÅÕÂè ¹á»Å§·Õ¢è Ò¾Íà µÍÔ¹¾Øµ l ÁÕè Õ ÊÔ àµÍà ÊÒí ËÃѺà¡çº¤ Ò¢Ò¾Íà µÍÔ¹¾Øµ·Õàè ¡Ô´ÍÔ¹àµÍÃ Ã»Ñ µ l ÊÒÁÒöàª×Í è Áµ ͡ѺäÁâ¤Ã¤Í¹â·ÃÅàÅÍà ÂÍ´¹ÔÂÁä´ ·¡Ø µÑÇ l

3. ¢Ñ¹é µÍ¹¡ÒõԴµ ͡ѺºÍà ´ ZX-RELAY16 ¡ÒõԴµ ͡ѺºÍà ´ ZX-RELAY16 ¡ç¤Í× ¡ÒõԴµ ͡ѺäÍ«Õ MCP23016 ¹Ñ¹è àͧ â´Âµ ͧà¢Õ¹â»Ãá¡ÃÁà¾×Íè ¡íÒ˹´ãË MCP23016 ·íÒ§Ò¹à¾×Íè ¡íÒ˹´ãË ¾Íà µ·Ñ§é ËÁ´à» ¹àÍÒµ ¾µØ ¨Ò¡¹Ñ¹é ¨Ö§Ê §¢ ÍÁÙÅÍÍ¡ä»Âѧ¢Ò¾Íà µ·Ñ§é ËÁ´¡ç¨Ð·íÒãË ÊÒÁÒö¤Çº¤ØÁÃÕàÅ ·§Ñé 16 µÑÇä´ ÁÕ¢¹Ñé µÍ¹¡ÒõԴµ Íâ´ÂÊÃØ»´Ñ§¹Õé (1) Ê §¤íÒÊÑ§è µÔ´µ ͡ѺäÍ«Õ MCP23016 à¾×Íè ¡íÒ˹´à» ¹âËÁ´à¢Õ¹¢ ÍÁÙÅ (2) Ê §¤íÒÊѧè à¾×Íè µÔ´µ ͡ѺÃÕ¨ÊÔ àµÍà IODIR0 (áÍ´à´ÃÊ 0x06) (3) ¡íÒ˹´ãË ¢Ò¾Íà µ 8 ºÔµÅ ҧ໠¹àÍÒµ ¾µØ â´Âà¢Õ¹¤ Ò 0 ãË ¡ºÑ ·Ø¡ºÔµ¢Í§ÃÕ¨ÊÔ àµÍà IODIR0 (4) Ê §¤íÒÊѧè à¾×Íè µÔ´µ ͡ѺÃÕ¨ÊÔ àµÍà IODIR1 (áÍ´à´ÃÊ 0x07) (5) ¡íÒ˹´ãË ¢Ò¾Íà µ 8 ºÔµº¹ à» ¹àÍÒµ ¾µØ â´Âà¢Õ¹¤ Ò 0 ãË ¡ºÑ ·Ø¡ºÔµ¢Í§ÃÕ¨ÊÔ àµÍà IODIR1 (6) Ê §¤íÒÊѧè à¾×Íè µÔ´µ ÍÊ §¢ ÍÁÙšѺÃÕ¨ÊÔ àµÍà ¢Í§¢Ò¾Íà µäºµ ÅÒ §·Õáè Í´à´ÃÊ 0x00 (7) Ê §¤íÒÊѧè à¾×Íè µÔ´µ ÍÊ §¢ ÍÁÙšѺÃÕ¨ÊÔ àµÍà ¢Í§¢Ò¾Íà µäºµ º¹·Õáè Í´à´ÃÊ 0x01 ¨Ò¡¢Ñ¹é µÍ¹¡ÒõԴµ ÍÊÒÁÒö¹íÒÁÒà¢Õ¹໠¹â»Ãá¡ÃÁÀÒÉÒ C â´Â㪠mikroC ¤ÍÁä¾àÅÍà à¾×Íè ·´Êͺ ¡Ò÷íÒ§Ò¹´Ñ§áÊ´§ã¹â»Ãá¡ÃÁ·Õè 1

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ºÍà ´ÃÕàÅ 16 ª ͧ¼ Ò¹ÃкººÑÊ I2C

char I2CInit_=0; char y; int i,j; void Relay16(unsigned int x) { if (I2CInit_==0) { I2C_Init(100000); // I2C_Start(); // I2C_Wr(0x40); // I2C_Wr(0x06); // I2C_Wr(0x00); // I2C_Stop(); // I2C_Start(); I2C_Wr(0x40); I2C_Wr(0x07); I2C_Wr(0x00); I2C_Stop(); I2CInit_=1;

// // // // //

Call initial L2C Start communication Address MCP23016 and Write Command Command for access IODIR0 Set DIR0 to OUTPUT Stop communication Start communication Address MCP23016 and Write Command Command for access IODIR1 Set DIR0 to OUTPUT Stop communication

} y=x%256; I2C_Start(); I2C_Wr(0x40); I2C_Wr(0x00); I2C_Wr(y); I2C_Stop();

// // // //

Issue I2C Send byte Send byte Send byte

start signal via I2C (device address + W) (data address) (data address)

x=x/256; I2C_Start(); I2C_Wr(0x40); I2C_Wr(0x01); I2C_Wr(x); I2C_Stop();

// // // //

Issue I2C Send byte Send byte Send byte

start signal via I2C (device address + W) (data address) (data address)

} void main() { while(1) { i=1; while(i<32768) { Relay16(i); Delay_ms(500); i=i*2; } Relay16(i); Delay_ms(500); } }

// Loop // Start value // End loop value // Send Data to ZX-relay16 // Shift left // Send Last bit

¡Ò÷íÒ§Ò¹¢Í§â»Ãá¡ÃÁ â»Ãá¡ÃÁËÅÑ¡¨Ð¹íÒ¤ Ò i ÁÒ·íÒ¡ÒÃàÅ×Íè ¹ºÔµä»·Ò§« Ò áÅ ÇÊ §ãË ¡ºÑ ¿ §¡ ª¹Ñè Relay16 () «Ö§è ·íÒ˹ Ò·Õè µÔ´µ ͡ѺºÍà ´ ZX-RELAY16 ÊíÒËÃѺ¿ §¡ ª¹Ñè Relay16() ¨Ð¡íÒ˹´ãË ¢Ò¾Íà µ·Ñ§é ËÁ´à» ¹àÍÒµ ¾µØ ¨Ò¡¹Ñ¹é ÃѺ¤ ÒµÑÇá»Ã x ࢠÒÁÒ á¡໠¹ 8 ºÔµÅ Ò§áÅÐ 8 ºÔµº¹ ¹íÒ¤ Ò 8 ºÔµÅ Ò§Ê §ä»ÂѧáÍ´à´ÃÊ 0x00 à¾×Íè ¢Ñº RELAY1 ¶Ö§ 8 áÅйíÒ¤ Ò 8 ºÔµº¹Ê §ä»ÂѧáÍ´à´ÃÊ 0x01 à¾×Íè Ê §ä»¢Ñº RELAY9 ¶Ö§ 16

â»Ãá¡ÃÁ·Õè 1 ä¿Å I2CrelayTest.c â»Ãá¡ÃÁÀÒÉÒ C ÊíÒËÃѺ¡ÒÃ㪠§Ò¹äźÃÒÃÕ i2c ¢Í§ mikroC ¤ÍÁä¾àÅÍà à¾×Íè µÔ´µ ͡ѺâÁ´ÙÅÃкººÑÊ I2C ¢Í§äÁâ¤Ã¤Í¹â·ÃÅàÅÍà PIC16F877/887

ZX-RELAY16 ºÍà ´ÃÕàÅ 16 ª ͧ¼ Ò¹ÃкººÑÊ I2C

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4. µÑÇÍ ҧ¡Ò÷´Êͺ 20MHz

4.1 µ Íǧ¨Ãã¹ÃÙ»·Õè 3 㪠äÁâ¤Ã¤Í¹â·ÃÅàÅÍà PIC16F877 ËÃ×Í PIC16F877A ¤ÇÒÁ¶ÕÊè ­ Ñ ­Ò³¹ÒÌ ¡Ò 4.2 Êà ҧâ»Ãà¨ç¡µ ªÍ×è I2CrelayTest áÅоÔÁ¾ â»Ãá¡ÃÁÀÒÉÒ C µÒÁâ»Ãá¡ÃÁ·Õè 1 4.3 ·íÒ¡ÒäÍÁä¾Å áÅдÒǹ âËÅ´â»Ãá¡ÃÁà¾×Íè ·´Êͺ¼ÅÅѾ¸ ¡Ò÷íÒ§Ò¹ 4.4 ¨ ÒÂä¿ãË á¡ ºÍà ´ ZX-RELAY16 áÅкÍà ´·´ÅͧäÁâ¤Ã¤Í¹â·ÃÅàÅÍà 4.5 Ãѹâ»Ãá¡ÃÁ Êѧࡵ¡Ò÷íÒ§Ò¹¢Í§ LED áÅÐÃÕàÅ º¹ºÍà ´ ZX-RELAY16

ÊѧࡵàËç¹ LED ·Õµè Òí á˹ § RELAY1 µÔ´äÅ ÅÒí ´Ñºä»¨¹¶Ö§ RELAY16 áÅÐä´ Â¹Ô àÊÕ§˹ ÒÊÑÁ¼ÑÊ ¢Í§ÃÕàÅ µÑ´µ ÍäÅ ÅíҴѺ¡Ñ¹ä»Í ҧµ Íà¹×èͧ

NC C NO NC C NO NC C NO NC C NO NC C NO NC C NO NC C NO NC C NO NC C NO NC C NO NC C NO NC C NO NC C NO NC C NO NC C NO NC C NO RELAY16 RELAY15 RELAY14 RELAY13 RELAY12 RELAY11 RELAY10 RELAY9 RELAY8 RELAY7 RELAY6 RELAY5 RELAY4 RELAY3 RELAY2 RELAY1

ON

POWER

SDA

SCL

-

SDA SCL

I C EXPANSION A2 A1 A0

ãÊ ¨ÑêÁà»Íà = Åͨԡ "0" +5V

+12V 2A

R9 10k

C3 0.1µF

11 32 Vcc 1

SW1 RESET

R8

MCLR

21+ $.&%% ) 21+ $.&&% RC4/SDA 23 12 31

RC3/SCL

18

GND OSC1

OSC2

13

14

C1 22pF

XTAL1 20MHz

C2 22pF

ÃÙ»·Õè 3 ǧ¨Ã·´Åͧ㪠§Ò¹âÁ´ÙÅÃкººÑÊ I2C ¢Í§äÁâ¤Ã¤Í¹â·ÃÅàÅÍà PIC16F877/887

6 l ZX-RELAY16

ºÍà ´ÃÕàÅ 16 ª ͧ¼ Ò¹ÃкººÑÊ I2C

5. á¹Ð¹íÒ mikroC ¤ÍÁä¾àÅÍà ໠¹ ªØ ´ «Í¿µ á Çà ¾Ñ ² ¹Òâ»Ãá¡ÃÁÀÒÉÒ C Êí Ò ËÃÑ º äÁâ¤Ã¤Í¹â·ÃÅàÅÍà PIC ¼Ù ¾Ñ ² ¹Ò¤× Í mikroElektronika (mikroE : www.mikroe.com) mikroC ä´ ºÃèØà¤Ã×Íè §Á×Íà¾×Íè ÍíҹǤÇÒÁÊдǡ㹡ÒþѲ¹Ò â»Ãá¡ÃÁäÇ ÁÒ¡ÁÒ µÑÇá»Åâ»Ãá¡ÃÁÀÒÉÒ C ËÃ×Í C compiler ÁÕû٠Ẻ¡Ò÷íÒ§Ò¹·Õàè ¢ Ò¡Ñ¹ä´ ¡ºÑ ANSI C Áҵðҹ ÁÕäźÃÒÃÕÃͧÃѺ¡ÒõԴµ ͡ѺÍØ»¡Ã³ ÀÒ¹͡¨íҹǹÁÒ¡ ¾Ã ÍÁ·Ñ§é µÑÇÍ ҧâ»Ãá¡ÃÁ·Õªè Ç ÂÅ´àÇÅÒ ã¹¡ÒþѲ¹Òâ»Ãá¡ÃÁ ¼Ù¾ ² Ñ ¹Òâ»Ãá¡ÃÁÊÒÁÒöµÃǨÊͺ·ÃѾÂҡâͧäÁâ¤Ã¤Í¹â·ÃÅàÅÍÃ ä´ µÅÍ´àÇÅÒ «Ö§è à» ¹»ÃÐ⪹ Áҡ㹡óշãÕè ª Ã¹Ø ÊÒ¸Ôµ ·Ñ§é ¹Õàé ¾×Íè ª Ç» ͧ¡Ñ¹äÁ ãË à¢Õ¹â»Ãá¡ÃÁÂÒÇà¡Ô¹¡Ç Ò¢ ͨíÒ¡Ñ´ mikroC ÊÒÁÒöãË ä¿Å ¼ÅÅѾ¸ .hex ´ Ç¡ÒäÅÔ¡à¾Õ§»ØÁ à´ÕÂÇ ·íÒãË Å´¢Ñ¹é µÍ¹ã¹¡Ò÷íÒ§Ò¹Å§ä´ Í ҧÁÒ¡ áÅÐä¿Å .hex ÊÒÁÒö ¹íÒä»ãª ¡ºÑ à¤Ã×Íè §â»Ãá¡ÃÁäÁâ¤Ã¤Í¹â·ÃÅàÅÍà PIC ÁÒµÃ°Ò¹ä´ ·¡Ø Ãع ¼Ùã ª §Ò¹ÊÒÁÒö´Òǹ âËÅ´Ãع 2K ÁÒ㪠§Ò¹ä´ ¿ÃÕ â´ÂÁÕ¢Í ¨íÒ¡Ñ´´ Ò¹¢¹Ò´¢Í§ä¿Å ËÅѧ¨Ò¡¤ÍÁä¾Å ËÃ×Íá»Å§à» ¹ÃËÑÊà¤Ã×Íè § (ä¿Å ¹ÒÁÊ¡ØÅ .hex) µ ͧäÁ à¡Ô¹ 2 ¡ÔâÅàÇÔô áµ ¡Áç Ò¡à¾Õ§¾ÍÊíÒËÃѺ¡ÒþѲ¹Òâ»Ãá¡ÃÁ ÊíÒËÃѺ¡Ò÷´Åͧ㪠§Ò¹äÁâ¤Ã¤Í¹â·ÃÅàÅÍà PIC àº×Íé §µ ¹ ÃÇÁ·Ñ§é â»Ãá¡ÃÁÊíÒËÃѺ¤Çº¤ØÁ¡Ò÷íÒ§Ò¹¢Í§Ëع ¹µ 굄 â¹Áѵ¢Ô ¹Ò´àÅç¡ä´ à» ¹Í ҧ´Õ ÊíÒËÃѺ¼Ùã ª §Ò¹·Õ·è ´Åͧ㪠mikroC áÅ ÇÁÕ¤ÇÒÁʹ㨵 ͧ¡ÒÃÃع ÊÁºÙó ÊÒÁÒöµÔ´µ ÍÊÑ§è «×Íé ä´ ·Õè ºÃÔÉ·Ñ ÍÔ¹â¹àǵտ àÍç¡à¾ÍÃÔàÁ¹µ ¨íÒ¡Ñ´ ËÃ×ͨҡàǺ䫵 ¢Í§¼Ù¼ ÅÔµ http://www.mikroe.com