i2c3 on nRF5340 not working

[youssef-xcite]

I have attached a sensor board to the nRF5340DK board

I'm using zephyr 1.6.0 on macOS

I ran an I2C scan example using I2C1 peripheral and it works fine

found 5 I2C slave address

this is the main.c I used

#include <errno.h>
#include <zephyr.h>
#include <sys/printk.h>
#include <device.h>
#include <drivers/i2c.h>


void main(void)
{
	const struct device *i2c_dev;
	int i;

	i2c_dev = device_get_binding("I2C_1");
	if (!i2c_dev) {
		printk("I2C: Device driver not found.\n");
		return;
	} else {
		printk("I2C: Device driver found !!!!!!.\n");
	}

	for ( i = 4; i < 0x77; i++) {
		struct i2c_msg msgs[1];
		/* Send the address to read from */
		msgs[0].buf = NULL;
		msgs[0].len = 0;
		msgs[0].flags = I2C_MSG_WRITE | I2C_MSG_STOP;
		printk("0x%2x not found FOUND\n", i);
		if (i2c_transfer(i2c_dev, &msgs[0], 1, i) == 0) {
			printk("0x%2x FOUND\n", i);
		}
	}
}

this the nrf5340dk_nrf5340_cpuapp.overlay file

&i2c1 {
	compatible = "nordic,nrf-twim";
	sda-pin = <8>;
	scl-pin = <7>;
	status = "okay";
};

and this the prj.conf file 

CONFIG_STDOUT_CONSOLE=y
CONFIG_PRINTK=y
CONFIG_I2C=y

 

Now, I tested with I2C3 (I'm thinking of using UART1 for GSM)

so I changed the nrf5340dk_nrf5340_cpuapp.overlay file to 

&i2c3 {
	compatible = "nordic,nrf-twim";
	sda-pin = <8>;
	scl-pin = <7>;
	status = "okay";
};

then I changed  i2c_dev = device_get_binding("I2C_1"); -----> i2c_dev = device_get_binding("I2C_3"); in the main.c

but it doesn't work: the I2C device driver was found but it doesn't find any I2C slave address
I changed also the proj.conf file

CONFIG_STDOUT_CONSOLE=y
CONFIG_PRINTK=y
CONFIG_I2C=y
CONFIG_NRFX_TWIM=y
CONFIG_NRFX_TWIM0=y
CONFIG_NRFX_TWIM3=y

but I got the same error 
the I2C device driver was found but it doesn't find any I2C slave address

this the generated dts file 
4555.zephyr.dts

what could be the problem with this behavior?

[Simon]

Hello Youssef,

Thanks for an informative issue description.

This was an interesting issue that I have not seen before. I'm not sure why it doesn't work with i2c3, and I could not find any erratas related to this either.

Are you able to capture a trace of the SDA and SCL lines using a logic analyzer? Get traces from both the i2c1 transaction as well as the i2c3 transaction.

Best regards,

Simon

[youssef-xcite]

Hello Simo

this screenshot using i2c1, and it works 


but with i2c3, nothing happens, and SDA, SCL pulled to VDD



I tested with 3 different boards to make sure it's software problem 

Best regards,
Youssef

[youssef-xcite]

Hello
I think there is a problem with instances 2 and 3 for i2c and UART 
[84] UARTE: UARTE2 and UARTE3 are not functional
I tested gsm_modem example with UART 1 and it works fine but with UART 2 and 3 it not working.

I set (TX, RX) pins to (8,7) with UART 1,2 and 3

Could it be there are some specific pins for instance 2 and 3 ?

Best regards
Youssef

[youssef-xcite]

Finally, I found out the reason for this behavior.
I'm using PDK nRF53 and it supports only the peripheral instance 1 and 2
I ordered a new nRF53 DK and tested it, it works