// Scan for updates in the master/slave
// - Interrupts will deal with most input functions
// - Used to send queries
// - SyncEvent is sent immediately once the current command is sent
// - SyncEvent is also blocking until sent
void Connect_scan()
{
// Latency measurement start
Latency_start_time( connectLatencyResource );
// Check if initially configured as a slave and usb comes up
// Then reconfigure as a master
if ( !Connect_master && Output_Available && !Connect_override )
{
Connect_setup( Output_Available, 0 );
}
// Limit how often we do cable checks
//uint32_t time_compare = 0x007; // XXX Used for debugging cables -HaaTa
uint32_t time_compare = 0x7FF; // Must be all 1's, 0x3FF is valid, 0x4FF is not
uint32_t current_time = systick_millis_count;
if ( Connect_lastCheck != current_time
&& ( current_time & time_compare ) == time_compare
)
{
// Make sure we don't double check if the clock speed is too high
Connect_lastCheck = current_time;
// Send a cable check command of 2 bytes
Connect_send_CableCheck( UARTConnectCableCheckLength_define );
// If this is a slave, and we don't have an id yeth
// Don't bother sending if there are cable issues
if ( !Connect_master && Connect_id == DEFAULT_SLAVE_ID && Connect_cableOkMaster )
{
Connect_send_IdRequest();
}
}
// Only process commands if uarts have been configured
if ( uarts_configured )
{
// Check if Tx Buffers are empty and the Tx Ring buffers have data to send
// This happens if there was previously nothing to send
#if defined(_kinetis_)
if ( uart_tx_buf[ 0 ].items > 0 && UART0_TCFIFO == 0 )
uart_fillTxFifo( 0 );
if ( uart_tx_buf[ 1 ].items > 0 && UART1_TCFIFO == 0 )
uart_fillTxFifo( 1 );
#elif defined(_sam_)
//SAM TODO
#endif
// Process Rx Buffers
Connect_rx_process( 0 );
Connect_rx_process( 1 );
}
// Latency measurement end
Latency_end_time( connectLatencyResource );
}
// Setup
inline void Scan_setup()
{
// Setup UART Connect, if Output_Available, this is the master node
Connect_setup( Output_Available );
// Setup GPIO pins for matrix scanning
Matrix_setup();
// Setup ISSI chip to control the leds
LED_setup();
// Reset scan count
Scan_scanCount = 0;
}
