How to set UART without CTS/RTS in Zigbee CLI example

RE: How to set UART without CTS/RTS in Zigbee CLI example

Simonr — Mon, 20 Apr 2020 05:38:00 GMT

Indeed, the zigbee_cli.c has enabled HWFC. Another file that enables the HWFC in the cli_agent_router app is in the nrfx_uart.c file. These should be the only places the HWFC is enabled in the cli_agent_router example.

Best regards,

Simon

RE: How to set UART without CTS/RTS in Zigbee CLI example

nanbuwks — Fri, 17 Apr 2020 23:41:53 GMT

Hi Simonr! Thank you for reply.

I didn't know where to set "APP_UART_FLOW_CONTROL_DISABLED" up.

Instead, I found the following.

zigbee_cli.c:

#if CLI_OVER_UART
nrf_drv_uart_config_t uart_config = NRF_DRV_UART_DEFAULT_CONFIG;
uart_config.pseltxd = TX_PIN_NUMBER;
uart_config.pselrxd = RX_PIN_NUMBER;
#if defined(HWFC) && (HWFC == true)
uart_config.pselcts = CTS_PIN_NUMBER;
uart_config.pselrts = RTS_PIN_NUMBER;
uart_config.hwfc = NRF_UART_HWFC_ENABLED;
#endif
ret = nrf_cli_init(&m_cli_uart, &uart_config, true, true, NRF_LOG_SEVERITY_NONE);
APP_ERROR_CHECK(ret);
#endif

I changed to:

uart_config.hwfc = NRF_UART_HWFC_DISABLED;

So, I was able to get a CLI without RTS/CTS controls.

But, The

#if defined(HWFC) && (HWFC == true)

line are enabled. I don't know why HWCC is true. Where are you setting this up?

RE: How to set UART without CTS/RTS in Zigbee CLI example

Simonr — Fri, 17 Apr 2020 10:27:30 GMT

In order to disable HW flow control you only need to set APP_UART_FLOW_CONTROL_DISABLED in the UART parameters and change the CTS and RTS pins in your application to NULL.

Best regards,

Simon