NRF 51822 & MPU 9250-

[meria]

Our device fetches fused quaternion from MPU and transmits via NRF 51822.we are using 3.7v li-ion battery.we are using Non-volatile memory. Currently we are facing these issues i would really appreciate if someone could explain why this is happening.Thank you in advance

1.The board fails to transmit data after some time and we are forced to reprogram again to make it send data to android mobile?why?

2.Please pardon me if i am wrong.I want to blind NRF51822 as if there is no MPU data so that the Tx-receiver wont be turned on and consume power.so Is there a way to turn off the radio?rx?

[Øyvind Karlsen]

Hi,

1. Here we need some more information to be able to assist you.

2. The MPU9250 has a INT pin that serves as a wake-up-pin for MCUs. Connect this to a pin on nRF51822 and set it to sleep until it recieves a signal from the INT pin.

Best regards,

Øyvind

[meria]

new.PNG

yes We did that.how can i check tx_rx being turnd off?

[Øyvind Karlsen]

Hi,

TX_RX will be turned off if you but the MCU to sleep. Please see this answer for GPIO wakeup documentation.