Modulation Configuration in nRF Series

[Mihir Tailor]

Hello,

Recently i am working on UART application on nRF51822 based product.

In UART application code, there is no option to configure the modulation rate.

So, I would to ask the following questions:

1) If there will be no configuration regarding the modulation rate, what is the default modulation rate throughout the application execution?

2) How we can configure the modulation rate for our custom application?

Thanks

Waiting for your reply

[Simon]

With modulation rate i assume you mean baud rate. In sdk 12.3.0 in the peripheral/uart example, the baudrate can be set in main inside the UART communication structure app_uart_comm_params_t. For example if you want a baud rate of 11520 you set the last data field to UART_BAUDRATE_BAUDRATE_Baud115200.

Cheers, Simon

[Mihir Tailor]

Hi Simon,

Thanks for your reply.

But here modulation rate means the modulation rate of Radio.

In nRF51 series products, there are some options for it like Nrf_1Mbit, Nrf_2Mbit, Nrf_250Kbit or Ble_1Mbit.

So I am asking regarding this modulation rate. 

[haakonsh]

1. Nrf_1Mbit is default. The sofDevice will change it to Ble_1Mbit when enabled.
2. See nrf_esb_init, nrf_esb_config_t , and nrf_esb_bitrate_t for ESB, nrf_gzll_set_datarate for Gazell, and Radio Transmitter Example and Radio Receiver Example.

[Mihir Tailor]

Thanks.

It gives me a required answer.