Can the MDBT42Q BT/RF module be used as a single master to multi slave

[GeeDee]

Hi There,

I am curious to find out if the MDBT42Q module(s) can be used as a single master to multi slave setup? Essentially I want to have one module setup as a master (with 7 channels) and up to 3 modules set up as slaves and out puting on specific GPIO ports based on the channel assignment.

I noticed that the GPIO ports can only be configured as output ports on the MDBT42Q. Do I need to use a different module (different model) so I can configure some of the GPIO as inputs (master) and then map those to the GPIO out puts (slave) of the MDBT42Q?

Please let me know if this is the correct area for raising this type of query

Regards

George

[Stian Røed Hafskjold]

Hi, the MDBT42Q is using the nRF52832. On the nRF52832 all GPIOs can be configured as either output or input.

Note that GPIO stands for General Purpose Input/Output:

https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.ps.v1.1/gpio.html?cp=4_2_0_19#concept_zyt_tcb_lr

What type of protocol do you want to use? Usually the modules would talk together using SPI, TWI or UART. The SPI and TWI peripherlas can be configured to be either master or slave, and the UART peripheral is full-duplex.

[GeeDee]

Hi Stian,

Thank-you again for all this information.

I do want the the client and server(s) to communicate via BLE / WiFi and yes I want a state change on a client gpio to be mirrored across all other server(s).

Cheers and have a great day.

George