LPC55s69: I2c maximum byte transfer capability

[Deeps_bang]

Hi Team,

we are using LPC55s69JBD100.

Recently, we are trying to interface TOF sensor with LPC55s69 controller. 

During sensor initialization, controller has to write 8000 bytes of hex data to sensor.

i.e ex: status |= WrMulti(&(p_dev->platform),0,(uint8_t*)&VL53L8CX_FIRMWARE[0],0x8000);

I need a clarification that , LPC55s69- I2C supports how many  byte-long hex transfers?

Based on this capability , I will divide the data into chunks and transfer.

Thanks & regards,

Deep_Bang

[HangZhang]

Hi @Deeps_bang 

You can refer to the lpc55s69 i2c example.

The max i2c data length is 256byte.

Hope this will help you.

BR

Hang

[Deeps_bang]

Hi Hang,

We are not using dma_i2c_master transfer.

we are using I2C_MasterTransferNonBlocking(FL4_PR_ADXL_I2C_PERIPHERAL, &g_pr_handle, &masterXfer);

here, no where I got max I2C transfer length details.

So, is that mean, I2C will transfer the given length of data?

Thanks & Regards,

Deep_Bang

[Deeps_bang]

Hi Hang,

Any update on this?

[Deeps_bang]

Hi Team ,
Any update on this query?
Here, LPC55s69 and TOF sensor communication is happening via I2C with clock 12 MHz (BOARD_BootClockPLL150M) and 100kHz baud rate.