GPIOTE with BLE UART example

RE: GPIOTE with BLE UART example

Jørgen Holmefjord — Thu, 31 May 2018 08:39:33 GMT

Could you check the PIN_IN and PIN_OUT lines with a logic analyzer, to see if there are any visible glitches corresponding with the "flickering"? Which pins are you using for the input and output?

RE: GPIOTE with BLE UART example

Murugan — Wed, 30 May 2018 08:35:47 GMT

Above circuit is used to control the AC device. In output i am using 230 V AC Lamp. This circuit control the lamp brightness as per PIN_OUT signal. Its controlled brightness as per the signal but some time blink the the lamp. if you want video i will make and send you.

RE: GPIOTE with BLE UART example

Jørgen Holmefjord — Wed, 30 May 2018 08:16:02 GMT

Great! Please describe this "flickering issue" in more details. What are the symptoms? How are you controlling the AC device?

RE: GPIOTE with BLE UART example

Murugan — Wed, 30 May 2018 07:53:44 GMT

my hardware some issue. Now its rectified. Now working GPIOTE with BLE Uart example. But still i am facing Flickering issue.

when i test with "pin_change_int" example its working good. But this example merge with BLE UArt example i got flickering issue.

RE: GPIOTE with BLE UART example

Jørgen Holmefjord — Wed, 30 May 2018 07:24:48 GMT

Did you change PIN_IN define as well? I'm not sure I understand what your issue is. Do you get any error codes? Something else not working as expected?

I cannot help you with the "flickering for AC Dimmer" issue without you describing this issue in details. If it is not related to GPIOTE and this issue, you should create a new thread about this issue.

RE: GPIOTE with BLE UART example

Murugan — Wed, 30 May 2018 04:10:12 GMT

Yes i changed another GPIO for PIN_OUT but i faced same issue. When i comment this function (both buttons_leds_init(&erase_bonds) ) working good.

Also i am faced one more issue like flickering for AC Dimmer. please suggest me how can i solve this ?

RE: GPIOTE with BLE UART example

Jørgen Holmefjord — Tue, 29 May 2018 12:49:08 GMT

You cannot control the same GPIO using GPIOTE driver directly and with BSP LED module. Please redefined PIN_OUT to some other pin number than BSP_LED_0.

RE: GPIOTE with BLE UART example

Murugan — Tue, 29 May 2018 07:40:32 GMT

@Jørgen Holmefjord , Thanks for reply. your point is right. But i need both buttons_leds_init(&erase_bonds) and gpio_init() how can i use this.

my project is AC FAN control using Dimmer concept. Please suggest me. My code devzone.nordicsemi.com/.../7587.main.c

RE: GPIOTE with BLE UART example

Jørgen Holmefjord — Tue, 29 May 2018 07:04:30 GMT

Hi,

Error code 0x08 means NRF_ERROR_INVALID_STATE, and is returned by the GPIOTE driver init function if the driver is already initialized.

ble_app_uart example make use of the BSP library, which again use the application button library. The button library already initialize GPIOTE driver. You could add a check to make sure you do not initialize the driver if it is already initialized:

if (!nrf_drv_gpiote_is_init())
{
    err_code = nrf_drv_gpiote_init();
    APP_ERROR_CHECK(err_code);
}

Best regards,
Jørgen