Me pēhea te mahi BtangihePūoko?

1. Papamuri

I te nuinga o te wā, ina whakatikahia te pānga o tētahi pūoko, me whakamārama tuatahi, e kiia ana ko te whakaara ake i te pūoko. Ko te nuinga o tēnei wāhanga o te mahi ka mahia e te miihini taraiwa, engari i ētahi wā me mahi anō hoki e te miihini whakahāngai.

Engari, ki te pai te haere, i muri i te whirihoranga o te tautuhinga pūoko, te wāhitau i2c, me te chip_id pūoko i roto i te taraiwa pūoko, ka taea te whakaputa pikitia, engari i te nuinga o te wā, kāore i te tino maeneene, ā, he maha ngā raruraru ka tūtaki.

 

2. Tukanga whakaara ake i te pūoko

Tonoa ki te wheketere pūoko ngā whakaritenga e hiahiatia ana mō te tautuhinga Pūoko, tae atu ki te taumira, te Mclk, te tere anga, te whānui moka o te ahua mata putanga, me te maha o ngā mipi_lanes. Mena e tika ana, whakamāramahia kāore e taea te neke atu i te tere mipi mōrahi e tautokona ana e te tūāpapa;

Kia oti te tautuhinga, whirihorahia te taraiwa pūoko, whirihorahia tuatahi te tautuhinga pūoko, te wāhitau I2C, te chip_id;

Tikina te hoahoa kauwhata o te papahoahoa, whakaūtia te whirihoranga e pā ana ki te taputapu, ka whirihora i te mana pine o mclk, tautuhi anō, pwrdn, i2c i roto i te dts e ai ki te hoahoa kauwhata o te papahoahoa;

Kia oti ngā mahi o runga ake nei, ki te kore he raruraru ki te taputapu, ka taea e koe te whakamārama i te pikitia, kātahi ka whirihora i te wā whakaatu o te pūoko, te whakanui anaro me ētahi atu rēhita kia rite ki te pepa raraunga o te pūoko;

 

3. Whakarāpopototanga o te raruraru

a. Me pēhea te whakatau i ngā pine o te reset, pwrdn, i2c, mclk?

Tuatahi, me ako koe ki te pānui i te hoahoa kauwhata. I tino pōhēhē ahau i taku whiwhinga i te hoahoa i te tīmatanga. I whakaaro ahau he maha rawa ngā mea kei roto i te raruraru. Kāore au i te mōhio me tīmata ki hea. Inaa, kāore he maha o ngā wāhi hei aro atu. Kāore au e hiahia ki te mārama ki te hoahoa katoa.

Nā te mea ko te kāmera te mea matua e whirihorahia ana e mātou, kimihia te wāhanga atanga MIPI_CSI, e whakaaturia ana i te Pikitia a, ā, ka arotahi noa ki ngā pine whakahaere o CM_RST_L (tautuhi anō), CM_PWRDN (pwrdn), CM_I2C_SCL (i2c_clk), CM_I2C_SDA ( i2c_data ), me CM_MCLK (mclk) ki runga.

 

b. Ka rahua te I2C?

Kua hē te whirihoranga o te wāhitau i2c: I te nuinga o te wā, e rua ngā wāhitau o i2c, ā, he rerekē te taumata ina kumea ki runga, ki raro rānei.

Tirohia te raru o te pūhiko taputapu AVDD, DVDD, IOVDD, ko ngā pūhiko e toru o ētahi taputapu he pūhiko pumau, ā, ko ētahi e toru ngā pūhiko e whakahaerehia ana e te pūmanawa. Mena kei te whakahaerehia e te pūmanawa, me tāpiri e koe ēnei pūhiko e toru ki te pine whakahaere taraiwa.

He hē te whirihoranga o te pine mclk: ka taea e koe te whakamahi i te oscilloscope hei ine mēnā kei te wātea te karaka i tukuna ki te pūoko, mēnā rānei he tika te karaka, pērā i: 24MHz, 27MHz.

Whirihoranga pine i2c hē: I te nuinga o te wā, ka taea e koe te tirotiro i te kōnae pinmux-pins e rite ana o te mana matua hei whakaū mēnā kua tautuhia tika te GPIO e rite ana;

 

c. Kāore he ahua, he ahua rerekē rānei;

Tāuruhia te whakahau i te taha ISP hei tirotiro mēnā he hapa kei roto i te tukunga o te mipi.

Ka taea te ine i te tohu mipi mā te whakamahi i tētahi oscilloscope.

Hopukia te pikitia mata kia kite ai mēnā he hapa kei roto. Mēnā he hapa kei roto i te pikitia mata, he raruraru kei te tautuhinga pūoko. Pātai atu ki tētahi mai i te wheketere pūoko taketake kia tirohia.

I muri i te whakanui ake i te whakanui, ka puta ngā rārangi poutū (e kiia ana ko te FPN), e pā ana ki te pūoko, ā, ko te tikanga ka kitea te wheketere pūoko taketake hei mahi;