How to connect nRF51822 using adxl345 SPI? needed help

RE: How to connect nRF51822 using adxl345 SPI? needed help

Sigurd — Tue, 12 Dec 2017 12:30:20 GMT

Yes, try to use another pin for CS, and see if that solves the issue.

RE: How to connect nRF51822 using adxl345 SPI? needed help

mantap — Fri, 08 Dec 2017 23:35:49 GMT

thank you for your answer mr. Sigurd.. I'm using ADXL345 connection between SDA to P5, SDO to P6, SCL to P7, CS to P8. so CS connected to P8 must be change another pin or CS must be active High through VCC? and I'm using pin 9 & 11 for UART.

RE: How to connect nRF51822 using adxl345 SPI? needed help

Sigurd — Fri, 08 Dec 2017 14:20:48 GMT

Hi,

The nRF5x have flexible GPIO mapping, so all pins can be individually mapped to interface blocks for layout flexibility. You can therefore use any free GPIO pin you have on your board for SPI.

So make sure that the SPI pins you are using is not being used by anything else on your board. E.g. on the nRF51-DK, pin 8,9,10 and 11 is used for UART.