DIGILENT PmodCMPS Ntinye Pmods Sensọ akwụkwọ ntuziaka onye nwe

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The Digilent PmodCMPS na-egosi ndị ama ama Honeywell HMC5883L 3-axis dijitalụ kompas ma nwee ike ịgbakwunye ọgụgụ isi kompas na bọọdụ nnabata Digilent ọ bụla nwere interface I²C.

PmodCMPS.

Atụmatụ gụnyere:

• 3-axis dijitalụ kompas
• Mkpebi Ubi 2 milli-gaus na ±8 gauss ubi
• Oke mmepụta data kacha 160 Hz
• Nhọrọ ndọghachi azụ maka ntụtụ SCL na SDA
• Obere PCB maka atụmatụ mgbanwe 0.8" × 0.8" (2.0 cm × 2.0 cm)
• Njikọ 2 × 4-pin nwere interface I2C
• Na-esochi Nkọwapụta ngwa ngwa Pmod
• Ọbá akwụkwọ na example koodu dị na ebe akụ

Nkọwa ọrụ

PmodCMPS na-eji Honeywell's HMC5883L na teknụzụ Anisotropic Magnetoresitive (AMR). N'asụsụ Bekee dị larịị, nke a pụtara na sensọ atọ ahụ (otu maka nhazi nhazi ọ bụla) nwere obere nnyonye anya na ibe ya ka enwere ike nwetaghachi data ziri ezi na Pmod.

Mmekọrịta na Pmod

Pmod CMPS na-ekwurịta okwu na bọọdụ nnabata site na protocol I²C. Jumpers JP1 na JP2 na-enye nhọrọ 2.2kΩ ịdọpụ elu iji maka data Serial na ahịrị elekere. Adreesị 7-bit maka mgbawa bọọdụ a bụ 0x1E, na-eme adreesị 8-bit maka iwu ọgụgụ 0x3D na 0x3C maka iwu ide.

Site na ndabara, PmodCMPS na-amalite na Single Measurement mode ka kompas were otu nha, na-edozi pin Njikere data dị elu, wee tinye onwe ya n'ime Ọnọdụ Idle. Mgbe ọ nọ na ọnọdụ na-adịghị arụ ọrụ, isi mmalite nke oriri ike bụ (ọ bụghị ihe ijuanya) nwere nkwarụ, dị ka ADC nke ime nke na-anakọta vol.tage nha. Agbanyeghị, ị ka nwere ike iji uru data kacha ọhụrụ nweta ndekọ niile site na bọs I²C. Ka ịgbanwee PmodCMPS site na ọnọdụ adịghị arụ ọrụ laghachi azụ ka ọ bụrụ otu nha ma ọ bụ ọnọdụ ntule na-aga n'ihu, onye ọrụ ga-ederịrị akwụkwọ na Ndebanye aha ọnọdụ (0x02).

Mgbe ị na-agụ data sitere na Pmod CMPS, a ga-agụrịrị akwụkwọ ndekọ data isii niile, dabara na baiti elu na nke ala nke ntụzịaka nhazi nke Cartesian ọ bụla. Ebe ọ bụ na akara adreesị ndekọ nke ime na-abawanye na-akpaghị aka mgbe agụchara ndekọ nke ọma, enwere ike iji otu iwu gụọ na ndekọ isii niile. Otu exampE nyere otu nke a n'okpuru: 

Tebụl 1. Iwu na adreesị bytes.

byte iwu

byte adreesị

0

0

1

1

1

1

0

1

(ACK)

0

0

0

0

0

0

1

1

(ACK)

MSB X

LSB X

SX

SX

SX

SX

sb

Ọkachamara

b9

b8

(ACK)

b7

b6

b5

b4

b3

b2

b1

b0

(ACK)

MSB Z

LSB Z

SX

SX

SX

SX

sb

Ọkachamara

b9

b8

(ACK)

b7

b6

b5

b4

b3

b2

b1

b0

(ACK)

MSB Y

LSB Y

SX

SX

SX

SX

sb

Ọkachamara

b9

b8

(ACK)

b7

b6

b5

b4

b3

b2

b1

b0

(KWỤSỊ)

Mara: SX na-anọchi anya mgbatị akara nke bit akara (sb).

Okpokoro nkọwa Pinout

Tebụl 1. Njikọ J1: Nkọwa ntụtụ dị ka akpọrọ na Pmod.

Isi okwu J1
Ntụtụ	Signal	Nkọwa
1 & 5	SCL	Oghere Usoro elekere
2 & 6	SDA	Oghere Usoro Data
3 & 7	GND	Ala Na-enye Ike
4 & 8	VCC	Nkwanye ike (3.3V)

Isi okwu J2
Ntụtụ	Signal	Nkọwa
1	DRDY	Njikere data
2	GND	Ala Na-enye Ike
Ọnụ ego JP1
Steeti eburu		Ahịrị SDA na-eji ihe mgbochi 2.2kΩ dọpụta elu
Ọnụ ego JP2
Steeti eburu		Ahịrị SCL na-eji resistor 2.2kΩ ndọpụta

Pmod CMPS na-enyekwa ụdị nnwale nke onwe iji nyere aka ịhazi data ọ bụla a na-enweta na modul.

Ike mpụga ọ bụla etinyere na PmodCMPS ga-abụrịrị n'ime 2.16V na 3.6V; ya mere, mgbe ị na-eji Pmod nkụnye eji isi mee na bọọdụ sistemu Digilenti, ọkọnọ voltage kwesịrị ịdị na 3.3V.

Akụkụ anụ ahụ

A na-ekewa ntụtụ ndị dị na nkụnye eji isi mee ihe 100 mil iche. PCB dị sentimita 0.8 n'ogologo n'akụkụ ya na ntụtụ dị na nkụnye eji isi mee na 0.8 sentimita asatọ n'ogologo n'akụkụ ya na-adaba na nkụnye eji isi mee.

Nwebiisinka Digilent, Inc.
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Akwụkwọ / akụrụngwa

DIGILENT PmodCMPS Ntinye Pmods sensọ [pdf] Akwụkwọ ntuziaka onye nwe Ihe mmetụta PmodCMPS ntinye Pmods, PmodCMPS, ihe mmetụta Pmods ntinye, ihe mmetụta Pmods, ihe mmetụta.

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