Building for BLE Nano2 with nRF5 SDK

RE: Building for BLE Nano2 with nRF5 SDK

Jørgen Holmefjord — Thu, 21 Sep 2017 11:31:31 GMT

This should be straigh forward. Program one device with the UART/Serial Port Emulation over BLE example (ble_app_uart), and the other board with Nordic UART Service Client example (ble_app_uart_c), and follow the test instructions in the above links.

RE: Building for BLE Nano2 with nRF5 SDK

Lukeman — Wed, 20 Sep 2017 13:43:54 GMT

Hi i am struck with BLE nano 2, i was able to program using Arduino code from the redbear available in github. But when i tried using Nordic SDK using keil i don't know how to proceed further .My objective is to pair two nano devices and transfer "char" over BLE. How to proceed after this??

RE: Building for BLE Nano2 with nRF5 SDK

Jørgen Holmefjord — Thu, 13 Jul 2017 12:28:23 GMT

I see, then it makes sense that it did not work.

RE: Building for BLE Nano2 with nRF5 SDK

paul_tanner — Thu, 13 Jul 2017 12:19:57 GMT

ok. somehow bsp_board_leds_init() was accidentally removed from main.c. So now all is clear.

RE: Building for BLE Nano2 with nRF5 SDK

Jørgen Holmefjord — Thu, 13 Jul 2017 12:07:54 GMT

It should not be required, as each LED in LEDS_LIST should be configured in bsp_board_leds_init():

#if LEDS_NUMBER > 0
static const uint8_t m_board_led_list[LEDS_NUMBER] = LEDS_LIST;
#endif

void bsp_board_leds_init(void)
{
    uint32_t i;
    for(i = 0; i < LEDS_NUMBER; ++i)
    {
        nrf_gpio_cfg_output(m_board_led_list[i]);
    }
    bsp_board_leds_off();
}

Can you try setting a breakpoint inside the for-loop in bsp_board_leds_init(), to see if it is executing?

RE: Building for BLE Nano2 with nRF5 SDK

paul_tanner — Thu, 13 Jul 2017 12:04:00 GMT

@Jorgen thx. I just figured this out at the same time as you posted your last suggestion. sure enough all is good when the pin is explicitly configured as an output. What I do not get is why the same blinky works on nRF52-DK without setting the pin mode explicitly. Not a big concern but it would be good to know.

RE: Building for BLE Nano2 with nRF5 SDK

paul_tanner — Thu, 13 Jul 2017 11:52:51 GMT

found the problem! pin11 was not getting set as an output.

nrf_gpio_cfg_output(LED_OB);

added to main.c fixed it. this should not be needed as LED_OB is (I think) properly defined in the board .h file (see above).

RE: Building for BLE Nano2 with nRF5 SDK

Jørgen Holmefjord — Thu, 13 Jul 2017 11:46:48 GMT

There should not be any problems mapping pin 11. Looks like the led of the BLE Nano 2 is pulldown, while the LEDs of the PCA10040 is pullup. Can you try configuring and toggling the LED manually in your blinky example?

#include "nrf_gpio.h"
#include "nrf_delay.h"

#define LED_PIN 11

int main(void)
{
	/* Configure LED pin. */
    nrf_gpio_cfg_output(LED_PIN);
    nrf_gpio_pin_set(LED_PIN);
    
	/* Toggle LEDs. */
    while (true)
    {
        nrf_gpio_pin_toggle(LED_PIN);
        nrf_delay_ms(500);
    }
}

RE: Building for BLE Nano2 with nRF5 SDK

paul_tanner — Thu, 13 Jul 2017 06:22:44 GMT

Yes I did. And I have tested this same board .h file on the uart example to which I added LED blinking. I have. I also added a line that echos the state of pin 11 to the RTT. This shows that, although the LED is not blinking, pin 11 is being toggled. From other tests I know that the LED is electrically connected. Is there some kind of problem in the mapping of pin 11?

RE: Building for BLE Nano2 with nRF5 SDK

Jørgen Holmefjord — Wed, 12 Jul 2017 11:17:58 GMT

Did you remember to change the preprocessor symbol defines in the blinky example to use your custom board file?

RE: Building for BLE Nano2 with nRF5 SDK

paul_tanner — Tue, 11 Jul 2017 14:50:54 GMT

yes. the blank version. same with the uart example.

RE: Building for BLE Nano2 with nRF5 SDK

Jørgen Holmefjord — Tue, 11 Jul 2017 12:10:01 GMT

The peripheral/blinky example? Are you using the "blank" version (no softdevice)?

RE: Building for BLE Nano2 with nRF5 SDK

paul_tanner — Tue, 11 Jul 2017 12:06:22 GMT

even more strangely. the LED flashes ok when the code from blinky is added to the uart example. blinky on it's own does not flash the LED. Have even tried using the config file for uart on blinky. Also compares the .ld file - they are the same.

RE: Building for BLE Nano2 with nRF5 SDK

paul_tanner — Tue, 11 Jul 2017 09:37:49 GMT

actually I just had some success with the uart example. Using the MK-20 to connect the Nano2 to a USB port. Then used screen to attach an OS/X terminal to that. However, blinky example still not working.

RE: Building for BLE Nano2 with nRF5 SDK

Jørgen Holmefjord — Tue, 11 Jul 2017 09:21:11 GMT

How did you connect the UART pins to your computer/console?