twi with nrf52dk

[nngohel]

hi

I connect AT24C02 EEPROM with nrf52dk.

I already test EEPROM with arduino and it work fine.

Now i want to communicate with NRF52DK kit,so which example I would prefer for that in seger emb. studio ??twi_master_with_twis_slave ??

I connect SCL to 27 pin ,and SDA to 26 pin.

where I Define my pins in code??

#define TWI_SCL_M 3 //!< Master SCL pin.
#define TWI_SDA_M 4 //!< Master SDA pin.

OR

#define EEPROM_SIM_SCL_S 27//31 //!< Slave SCL pin.
#define EEPROM_SIM_SDA_S 26//30 //!< Slave SDA pin.

in config.h

Would anyone help me to start my twi with nrf52dk ??

[awneil]

nngohel said:

Would anyone help me to start my twi with nrf52dk

As for any microcontroller, before TWI, I would recommend that you start by getting familiar with some simpler examples; eg,

https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/gpio_example.html

https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/uart_example.html

Also practice using the debugger:

https://infocenter.nordicsemi.com/index.jsp?topic=%2Fug_gsg_ses%2FUG%2Fgsg%2Fdebug.html

These will be invaluable in getting further projects working.

Moving on to TWI

The place to start is the TWI Scanner example - that will verify that you have connectivity to your Slave.

infocenter.nordicsemi.com/.../twi_scanner_example.html

You really need to have an oscilloscope or analyser so that you can see what is happening on the wires.

Once you have verified the connection, you can use the TWI Master example to communicate with your EEPROM:

https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/twi_master_with_twis_slave_example.html?cp=5_1_4_6_45_1#twi_master_with_twis_slave_example_master

(The nRF52 is the Master; your EEPROM is the Slave).

For general introductions to Nordic, see:

https://www.nordicsemi.com/Get-Started

https://devzone.nordicsemi.com/nordic/short-range-guides/b/getting-started/posts/introduction-to-bluetooth-low-energy-and-ble-devel

How to properly post source code:

[nngohel]

Thank.

twi_master_with_twis_slave was run success fully. 

now if i want to read particular only one address of my EEPROM and sent to BLE.

1st i want to do this only.