Can't read write to EEPROM with nrf52480 SDK example 'twi_master_with_twis_slave'

[Harry_H]

https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v11.0.0%2Ftwi_master_with_twis_slave_example.html

Testing

Test the TWIS slave and TWI master mode drivers example application by performing the following steps:

1. The pins should be shorted as described above.
2. Compile and program the application.
3. Start a terminal emulator like PuTTY and connect to the used COM port with the following UART settings:
   • Baud rate: 115.200
   • 8 data bits
   • 1 stop bit
   • No parity
   • HW flow control: RTS/CTS
4. Read the welcome message.
5. After each command below, check if the following warning appears:
   WARNING: EEPROM transmission error detected.
6. Send p command. Data read from the simulated EEPROM should contain values from 0x7f down to 0.
7. Send w command and write any string longer than 8 characters. Hit Enter.
8. Send p command again and look to see if your string is at the beginning of the memory.
9. Send c command to clear EEPROM.
10. Send p command again and see if all values are 0xff.

I have performed above mentioned steps and am getting error after 5th step and rest of the steps are not responding with an expected values.

[Vidar Berg]

Hi,

Which SDK version are you testing with? Also, just to make sure, did you short the pins on your board as described? The problem may be caused by wrong connections. 

Pins to short (see config.h file example directory):

• TWI_SCL_M - EEPROM_SIM_SCL_S
• TWI_SDA_M - EEPROM_SIM_SDA_S