void main(void)
{
bool send_crypt_data = false;
bool tx_success = false;
gzp_id_req_res_t id_req_status;
uint8_t payload[GZLL_MAX_PAYLOAD_LENGTH];
mcu_init();
// Initialize Gazell Link Layer
gzll_init();
// Initialize Gazell Pairing Library
gzp_init();
EA = 1;
while(true)
{
payload[0] = ~P0;
// Send every other packet as encrypted data
if(send_crypt_data)
{
// Send encrypted packet using the Gazell pairing library
tx_success = gzp_crypt_data_send(payload, GZP_ENCRYPTED_USER_DATA_MAX_LENGTH);
}
else
{
// Send packet as plaintext on pipe 2
gzll_tx_data(payload, GZLL_MAX_FW_PAYLOAD_LENGTH, 2);
while(gzll_get_state() != GZLL_IDLE)
;
tx_success = gzll_tx_success();
}
send_crypt_data = !send_crypt_data;
// If data transfer failed
if(!tx_success)
{
// Send "system address request". Needed for sending any user data to Host.
gzp_address_req_send();
// Send "Host ID request". Needed for sending encrypted user data to host.
id_req_status = gzp_id_req_send();
}
// If waiting for Host to grant or reject ID request
if(id_req_status == GZP_ID_RESP_PENDING)
{
// Send new ID request for fetching response
id_req_status = gzp_id_req_send();
}
}
}
static gzp_id_req_res_t send_host_id_req(void)
{
gzp_id_req_res_t id_resp;
// Try sending "Host ID" request
id_resp = gzp_id_req_send();
switch(id_resp)
{
case GZP_ID_RESP_REJECTED:
case GZP_ID_RESP_FAILED:
//nrfr_keyboard_led_blink_on(false, 0); // Turn LED off
nrf_gpio_pin_write(PAIRING_FAILED_LED,1);
nrf_gpio_pin_write(PAIRING_SUCCESS_LED,0);
// Reset variables so that pairing restarts from the beginning.
host_id_received = false;
system_addr_received = false;
break;
case GZP_ID_RESP_GRANTED:
// Blink LED if new Host ID received from dongle (pairing success)
//nrfr_keyboard_led_blink_on(true, 2000); // Blink LED for 2 seconds
nrf_gpio_pin_write(PAIRING_FAILED_LED ,0);
nrf_gpio_pin_write(PAIRING_SUCCESS_LED,1);
// Reset variables so that pairing restarts from the beginning.
host_id_received = true;
system_addr_received = true;
break;
case GZP_ID_RESP_PENDING:
default:
break;
}
return id_resp;
}
static gzp_id_req_res_t send_host_id_req(void)
{
gzp_id_req_res_t id_resp;
// Try sending "Host ID" request
id_resp = gzp_id_req_send();
switch(id_resp)
{
case GZP_ID_RESP_REJECTED:
case GZP_ID_RESP_FAILED:
host_id_received = false;
system_addr_received = false;
break;
case GZP_ID_RESP_GRANTED:
host_id_received = true;
system_addr_received = true;
break;
case GZP_ID_RESP_PENDING:
default:
break;
}
return id_resp;
}