Mesh serial rx

RE: Mesh serial rx

Hung Bui — Tue, 14 May 2019 13:16:20 GMT

Hi Deepa, the link is updated.

RE: Mesh serial rx

dk_07 — Tue, 14 May 2019 10:58:41 GMT

Hi Hung Bui,

Could you please update the link?

Thanks in advance

RE: Mesh serial rx

Hung Bui — Thu, 28 Mar 2019 16:52:51 GMT

Please create new case for you issue. Make sure you use a proper COM terminal to receive UART message.

RE: Mesh serial rx

ycp — Wed, 27 Mar 2019 07:30:08 GMT

hi,i am working on nrf52832 mesh3.1.0, i am test the mesh serial example now, why my board can received massage from PC,but PC can not recived massage from board ,

nrf_mesh_serial_tx(hello, sizeof(hello));


This function returns no error,but the PC terminal receied nothing, but use python script can recived 
as below , can the board just send massage to TX pin ,not use python script?
can you help me?

RE: Mesh serial rx

Duy — Wed, 08 Nov 2017 03:46:14 GMT

Thank you Hung, I send the wrong format so it didn't work. Now it works well. Now I will try to send a serial string from 1 board to another board using mesh, guess it won't be difficult. Thank you for your support :D Best regards

RE: Mesh serial rx

Hung Bui — Tue, 07 Nov 2017 16:30:02 GMT

This is my main loop:

void nrf_mesh_rx_cb(const uint8_t p_data, uint32_t length) { 
	__LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "Rx received\r\n"); 
}
int main(void)
{
#if defined(NRF51) && defined(NRF_MESH_STACK_DEPTH)
    stack_depth_paint_stack();
#endif


    __LOG_INIT(LOG_MSK_DEFAULT | LOG_SRC_ACCESS | LOG_SRC_SERIAL | LOG_SRC_APP, LOG_LEVEL_INFO, log_callback_rtt);
    __LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "----- Bluetooth Mesh Serial Interface Application -----\n");

    NRF_GPIO->DIRSET = 0xFFFFFFFF;
    NRF_GPIO->OUT    = LEDS_MASK;

    /* Flash leds at boot */
    for (int i = 0; i < 10; ++i)
    {
        NRF_GPIO->OUT ^= BSP_LED_0_MASK;
        nrf_delay_ms(100);
    }

    mesh_core_setup();

    /* Initialize dsm and access */
    dsm_init();
    access_init();

    __LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "Enabling ECDH offloading...\n");
    nrf_mesh_opt_t value = {.len = 4, .opt.val = 1 };
    ERROR_CHECK(nrf_mesh_opt_set(NRF_MESH_OPT_PROV_ECDH_OFFLOADING, &value));

    __LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "Enabling serial interface...\n");
    ERROR_CHECK(nrf_mesh_serial_init(nrf_mesh_rx_cb));
    ERROR_CHECK(nrf_mesh_serial_enable());

    __LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "Initialization complete!\n");
    NRF_GPIO->OUTCLR = BSP_LED_0_MASK;
    uint32_t result;
    char hello[] = "\r\nHello from Nordic\r\n";
    result = nrf_mesh_serial_tx(hello, sizeof(hello));
    __LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "Send result hello: %d\r\n", result);
    while (true)
    {
        (void)nrf_mesh_process();
    }
}

It worked fine. I can see the Hello text on UART (115200 bps) If I send a application command (opcode start from 0x20) : 0x01 0x20 , I can see RX call back is triggered and text is printed out on RTT.

Note that you need to use the format of the packet we have, first byte is length, next is opcode and then payload. The opcode have to be inside the application opcode range I mentioned above.

RE: Mesh serial rx

Duy — Tue, 07 Nov 2017 11:29:54 GMT

I declared a callback in nrf_mesh_serial_init() but It seems that the callback function doesn't execute when there is a serial event. This is part of my code, I am modifying the example for sure. I attached the run result in this command too. run_result.txt

All the function returned NRF_SUCCESS (0) but the callback function doesn't execute. Did I make any mistake? Once again, thank you very much for your support

RE: Mesh serial rx

Hung Bui — Tue, 07 Nov 2017 08:43:25 GMT

I'm not sure I understand what you modified in serial_uart.h. Normally it's not needed. You just need to declare your callback in nrf_mesh_serial_init().

When you call nrf_mesh_serial_tx() have you checked you have NRF_SUCCESS returned ?

RE: Mesh serial rx

Duy — Mon, 06 Nov 2017 16:48:02 GMT

Thank you very much Hung, I finally did it. I just need to point the callback pointer in serial_uart.h to a callback function. There is still one thing I'm trying to understand is that when I use a tx callback in serial_uart the function nrf_mesh_serial_tx() doesn't send anything to the serial monitor of PC.

RE: Mesh serial rx

Hung Bui — Mon, 06 Nov 2017 13:58:25 GMT

Hi Duy,

The mesh serial interface does support rx. If not how would it take the commands from peer device (PC) :) ?

UART data is processed in serial_uart.c in serial_uart_process() function.

The documentation of serial interface can be found here.

If you want to handle extra application command, when you declare nrf_mesh_serial_init() you can define the call back function that you will handle application command there. The opcode for application command should be in the range of SERIAL_OPCODE_CMD_RANGE_APP_START and SERIAL_OPCODE_CMD_RANGE_APP_END.