How to get 1 or 2 meter NFC Communication ??
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I have wristband(like smart watch) and another stationary device ,when the wristband reaches within 1 meter of the stationary device,stationary device want to show some indication for that i can use NFC communication? if yes how to get 1 meter NFC communication??
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@mubassir-mk Why do you wanna use NFC. Does your wrist band have BLE? If yes, you can easily make this application with BLE.
Please watch this video
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Hi @mubassir-mk, The NFC tag and reader can work only in Shorter working distance up to 10cm only. but Instead of that like @kowshik1729 suggested, you can try the BLE beacons since the BLE is active you need to power the device, but you can buy readymade beacons which can work with iBeacon or Eddystone protocols and it can work years using single coin cell battery.
Do you have any other particular reason to use the NFC?
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@kowshik1729 Thank you....
Very help full your replay ... -
@mubassir-mk Glad that it helped.
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Thanks for sharing @rafitc99 . Glad to know that it was solved.
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BaseType_t xQueueSendFromISR ( QueueHandle_t xQueue, const void *pvItemToQueue, BaseType_t *pxHigherPriorityTaskWoken );I was trying to pass a pointer. That was the issue.
Reference -
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I'm trying to pass a value into Queue from Interrupt Service Routine(ISR) using xQueueSendFromISR() <-- Reference
But I'm getting this error and ESP restart immediately.
Guru Meditation Error: Core 0 panic'ed (LoadProhibited). Exception was unhandled. Core 0 register dump: PC : 0x4021227c PS : 0x00000033 A0 : 0x4021c72e A1 : 0x3ffe8220Here is the gpio interrupt example which I'm following.
Here is my code. I did some modification in this.
Check 70th line of this location.
static void main_power_isr_handler(void* arg) { xQueueHandle* main_q = (xQueueHandle*)arg; static main_q_payload_t msg; msg.hdr = E_MAIN_MSG_MAIN_POWER_STATUS; msg.bool_payload = gpio_get_level(GPIO_MAIN_POWER); //ets_printf("Someone Interrupted \n "); xQueueSendFromISR(main_q, &msg, NULL); //!!! THIS LINE } -
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