I2C over DMA

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giksonca
Posts: 17
Joined: Fri Sep 14, 2018 11:30 am

I2C over DMA

Postby giksonca » Thu Jan 31, 2019 6:15 am

Hi,
Please confirm whether I2C over DMA is supported by ESP32 or not.
Evolution board which i'm using is ESP32_Devkitc_V4.
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costaud
Posts: 55
Joined: Wed Dec 30, 2015 5:09 pm

Re: I2C over DMA

Postby costaud » Thu Jan 31, 2019 6:40 am

In current version, we are still using interrupt to handle sending/receiving data.
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giksonca
Posts: 17
Joined: Fri Sep 14, 2018 11:30 am

Re: I2C over DMA

Postby giksonca » Thu Jan 31, 2019 11:12 am

Is there any plans of providing I2C over DMA.
If so when we can get new version of I2C with DMA.
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ESP_Sprite
Posts: 9043
Joined: Thu Nov 26, 2015 4:08 am

Re: I2C over DMA

Postby ESP_Sprite » Fri Feb 01, 2019 2:50 am

It's a hardware issue: the I2C peripheral on the ESP32 doesn't support DMA.
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