void NRF24L01p::block_when_tx_mode_more_than_4ms() {
// Timing functions are to slow and not precise enough for the Arduino
// So we keep track how many packets have been send.
//
// 2 Mb/s = 250 KB/s = 250 B/s = 7.8 packets per ms (not including overhead)
//
// So we block the TX FIFO every 32 packets
//
// Todo: update timing for other speeds, as less packets will be send per ms
bool is_tx_fifo_empty = tx_fifo_empty();
if (is_tx_fifo_empty) {
fifo_tx_written_counter = 0;
}
if (!is_tx_fifo_empty && fifo_tx_written_counter > 32) {
while (!tx_fifo_empty()) {
// The nRF24L01+ transmitter PLL operates in open loop when in TX
// mode. It is important never to keep the nRF24L01+ in TX mode for more than 4ms at a time. If the
// Enhanced ShockBurst™ features are enabled, nRF24L01+ is never in TX mode longer than 4ms.
// Do not use TX mode for more than 4 ms without auto acknowledgement
}
fifo_tx_written_counter = 0;
}
}
/**
@brief Network receive callback function
@param[in] *arg: unused
@param[in] *data: Data received
@param[in] length: Length of data received
@return void
*/
MEMSPACE
static void tcp_data_receive_callback(void *arg, char *data, uint16_t length)
{
uint16_t current;
uint8_t byte;
// Echo debug
#if 0
for(current = 0; current < length; current++)
uart0_putc(data[current]);
#endif
// FIXME NOT WORKING
//
for(current = 0; (current < length) && queue_space(uart_send_queue); current++)
{
byte = (uint8_t)data[current];
queue_pushc(uart_send_queue, byte);
}
if(queue_empty(uart_send_queue) && tx_fifo_empty(0))
uart_tx_disable(0);
else
uart_tx_enable(0);
}
