static bool gzp_tx_packet(const uint8_t* tx_packet, uint8_t length, uint8_t pipe)
{
if(gzll_tx_data(tx_packet, length, pipe))
{
while(gzll_get_state() != GZLL_IDLE)
;
return gzll_tx_success();
}
return false;
}
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();
}
}
}
bool com_execute()
{
xdata bool retval = false;
xdata uint8_t user_data[32];
xdata uint16_t temp;
xdata uint8_t t_length, t_pipe, curr_gzll_state;
static xdata uint8_t prev_gzll_state = 0xff;
// If Device operation
if(device_mode)
{
// Get Gazell state
curr_gzll_state = gzll_get_state();
if(curr_gzll_state == GZLL_IDLE)
{
// If state transition from TRANSMIT to IDLE
if(prev_gzll_state == GZLL_DEVICE_ACTIVE)
{
retval = true;
if(gzll_tx_success())
{
statistics[TX_PL_CNT]++;
statistics[TX_BYTE_CNT] += app_setup[TX_PL_LENGTH];
temp = gzll_get_tx_attempts();
statistics[TX_TRY_CNT] += temp;
statistics[AVG_TX_TRIES] = (uint16_t)(((float)statistics[TX_TRY_CNT] * 100) / statistics[TX_PL_CNT] );
if(statistics[MAX_TX_TRIES] < temp)
{
statistics[MAX_TX_TRIES] = temp;
}
statistics[TX_CH_SWITCHES] += gzll_get_tx_channel_switches();
}
if(gzll_rx_fifo_read(user_data, &t_length, &t_pipe))
{
statistics[RX_PL_CNT]++;
statistics[RX_BYTE_CNT] += t_length;
}
}
if(radio_run)
{
EA = 0;
if(cnt_1ms >= app_setup[TX_PACKET_INTERVAL] )
{
gzll_timer_tick = false;
cnt_1ms = 0;
EA = 1;
while(!gzll_timer_tick) // Improves synchronization to start in synch with protocol timer
;
gzll_tx_data(user_data, app_setup[TX_PL_LENGTH], app_setup[TX_PIPE]);
curr_gzll_state = GZLL_DEVICE_ACTIVE;
}
EA = 1;
}
prev_gzll_state = curr_gzll_state;
}
}
// Host operation
else
{
if(gzll_rx_fifo_read(user_data, &t_length, &t_pipe))
{
retval = true;
statistics[RX_PL_CNT]++;
statistics[RX_BYTE_CNT] += t_length;
t_length = app_setup[ACK_PL_LENGTH];
if(t_length)
{
if(gzll_ack_payload_write(user_data, t_length, t_pipe))
{
statistics[TX_PL_CNT]++;
statistics[TX_BYTE_CNT] += t_length;
}
}
}
}
return retval;
}
