Receiving 1024 byte of data continuously over TWIS i2c slave

RE: Receiving 1024 byte of data continuously over TWIS i2c slave

pradeep8892 — Thu, 25 Jun 2020 14:56:01 GMT

Hi Kenneth,

So, it was happening because of a peripheral now we have identified and solved the issue.

RE: Receiving 1024 byte of data continuously over TWIS i2c slave

Kenneth — Mon, 08 Jun 2020 13:57:20 GMT

Does each TWI transfer consist of a start and stop condition? What delay is there between each transmission?

Kenneth

RE: Receiving 1024 byte of data continuously over TWIS i2c slave

pradeep8892 — Sat, 06 Jun 2020 11:35:03 GMT

I understand, NRF52832 only supports up to 255 bytes in a single TWIS transaction, But i2c master is sending 4 packets of 255 bytes separately not in a single transaction.

RE: Receiving 1024 byte of data continuously over TWIS i2c slave

Turbo J — Sat, 06 Jun 2020 11:07:16 GMT

Too much data.

NRF52832 only supports up to 255 byte in a single TWIS transaction, as this is the maximum possible value in the TXD/RXD AMOUNT and MAXCNT registers.

Upgrading to NRF52840 could work, as this chip has more "bits" in these registers.