topic Re: LPC55s69: I2c maximum byte transfer capability in LPC Microcontrollers

LPC55s69: I2c maximum byte transfer capability

Deeps_bang — Sat, 13 Jul 2024 16:58:50 GMT

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

Re: LPC55s69: I2c maximum byte transfer capability

Deeps_bang — Mon, 15 Jul 2024 07:25:12 GMT

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.

Re: LPC55s69: I2c maximum byte transfer capability

Harry_Zhang — Mon, 15 Jul 2024 10:37:21 GMT

Hi @Deeps_bang

You can refer to the lpc55s69 i2c example.

The max i2c data length is 256byte.

Hope this will help you.

Hang

Re: LPC55s69: I2c maximum byte transfer capability

Deeps_bang — Wed, 17 Jul 2024 04:54:14 GMT

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

Re: LPC55s69: I2c maximum byte transfer capability

Deeps_bang — Thu, 18 Jul 2024 04:55:56 GMT

Hi Hang,

Any update on this?