the lib source err

RE: the lib source err

Hung Bui — Wed, 16 Sep 2015 11:54:06 GMT

Hi Fanqh, Maximum number of GPIOTE hardware channel is 4. I'm seeing that you are trying to use 4 and 5 which is more than 4. This is not allowed. See the define of NUMBER_OF_GPIO_TE.

RE: the lib source err

fanqh — Tue, 15 Sep 2015 09:23:23 GMT

static int8_t channel_port_alloc(uint32_t pin,nrf_drv_gpiote_evt_handler_t handler, bool channel) { int8_t channel_id = NO_CHANNELS; uint32_t i;

uint32_t start_idx = channel ? 0 : NUMBER_OF_GPIO_TE;
uint32_t end_idx = channel ? NUMBER_OF_GPIO_TE : (NUMBER_OF_GPIO_TE+GPIOTE_CONFIG_NUM_OF_LOW_POWER_EVENTS);
//critical section

for (i = start_idx; i < end_idx; i++)   //start= 4; end_id = 5   when button =2,the function  will  return 0xff, if somewherr is erro?
{
    if (m_cb.handlers[i] == FORBIDDEN_HANDLER_ADDRESS)
    {
        pin_in_use_by_te_set(pin, i, handler, channel);
        channel_id = i;
        break;
    }
}
//critical section
return channel_id;

}

i use s110 9.0.0

RE: the lib source err

Hung Bui — Fri, 11 Sep 2015 13:24:38 GMT

@Fanqh: Next time when you ask a question please put more description in. We need to know which SDK version you use. what you plan to do , and how the issue occurs.

From the information you provide, most likely you wanted to use more than 4 GPIOTE IN channels so you will receive NRF_ERROR_NO_MEM. I know you mentioned botton_count = 4, but if you have allocated 4 channels before and then try to add more you will receive the error.