Serialization: How to control GPIO connectivity chip

RE: Serialization: How to control GPIO connectivity chip

Christian Waldmann — Fri, 10 Jun 2016 09:44:28 GMT

To access the local resources on the connectivity chip, I have added to additional commands to the protocol: uint32_t sd_ble_conn_chip_reg_set( ble_conn_chip_reg_set_t reg_set ); uint32_t sd_ble_conn_chip_reg_get( ble_conn_chip_reg_get_t reg_get );

With the new commands, I can set any register to configure the peripherals and write output values, and I can get values from any register to read results.

Configuration of GPIOs as outputs and writing values is now possible, also I can setup the ADC and read back measured values.

May be this is a interesting extension for the serialization module. If someone is interested, I can deliver a example implementation based on SDK 11 and Softdevice S130.

nrf_soc_reg.h

RE: Serialization: How to control GPIO connectivity chip

Hung Bui — Fri, 22 Jan 2016 15:05:59 GMT

Hi Christian,

We don't have an example or supported in the library yet. But you are correct about using tx_buf_alloc() to set the buffer and then use ser_sd_transport_cmd_write() to send the command. You just need to define your own GPIO API (addition to the SVC APIs of the softdevice). So that you can process the packet accordingly in ser_conn_received_pkt_process() on the connectivity chip.

RE: Serialization: How to control GPIO connectivity chip

Christian Waldmann — Fri, 22 Jan 2016 13:31:59 GMT

I have worked out that on the side of the connectivity chip the right place to handle user commands is the function ser_conn_received_pkt_process() in the module ser_conn_pkt_decoder.c. Here I can decode user commands.

But on application side, I could not work out yet what is the expected way to send a user command. I have to use tx_buf_alloc() and ser_sd_transport_cmd_write() to start a transfer. It would be handy if there is an example implementation or even a stub for a user command transfer in the library routines.

RE: Serialization: How to control GPIO connectivity chip

Wojtek — Mon, 18 Jan 2016 16:52:11 GMT

You have to implement these commands by yourself. There is source code of serialization project in SDK, so it shouldn't be hard to modify it.