bool photo_camera_list::autodetect( GPContext* context )
{
ssize_t port_count = 0;
// Create a new list of cameras
if( gp_list_new( &camera_list_ ) != GP_OK )
{
photo_reporter::error( "gp_list_new()" );
return false;
}
// Load the low-level port drivers
if( loadPortInfo( &port_count ) == false )
{
return false;
}
// Load the photo_camera drivers
if( loadAbilities( context ) == false )
{
return false;
}
// Filter the list for USB cameras
if( filterCameraList( context, "usb:" ) == false )
{
return false;
}
return true;
}
////////////////////////////////////////////////////////////
// MAIN
void main()
{
int i;
// osc control / 16MHz / internal
osccon = 0b01111010;
apfcon0 = APFCON0_MASK;
// configure io. Initially all outputs are
// disabled except for the LED and all outputs
// states are zeroed
trisa = 0b11111111;
trisc = 0b11111111;
T_LED = 0;
ansela = 0b00000000;
anselc = 0b00000000;
porta = 0b00000000;
portc = 0b00000000;
P_WPU = 1; // weak pull up on switch input
option_reg.7 = 0; // weak pull up enable
// initialise MIDI comms
init_usart();
intcon.7 = 1; //GIE
intcon.6 = 1; //PEIE
// Configure timer 0 (controls systemticks)
// timer 0 runs at 4MHz
// prescaled 1/16 = 250kHz
// rollover at 250 = 1kHz
// 1ms per rollover
option_reg.5 = 0; // timer 0 driven from instruction cycle clock
option_reg.3 = 0; // timer 0 is prescaled
option_reg.2 = 0; // }
option_reg.1 = 1; // } 1/16 prescaler
option_reg.0 = 1; // }
intcon.5 = 1; // enabled timer 0 interrrupt
intcon.2 = 0; // clear interrupt fired flag
// enable interrupts
intcon.7 = 1; //GIE
intcon.6 = 1; //PEIE
// Initialise the table of port info pointers
port[0] = &port0;
port[1] = &port1;
port[2] = &port2;
port[3] = &port3;
port[4] = &port4;
port[5] = &port5;
port[6] = &port6;
port[7] = &port7;
// allow time for input to settle then load
// EEPROM settings, allowing a hold of MODE
// to restore default settings
delay_ms(5);
loadPortInfo((!P_MODE));
#ifdef RELAY_SWITCHER
// In relay switching mode set all output latches LOW
// and set default tristate (INPUT/1 selected for OFF)
T_OUT0 = !port0.cfg.invert;
T_OUT1 = !port1.cfg.invert;
T_OUT2 = !port2.cfg.invert;
T_OUT3 = !port3.cfg.invert;
T_OUT4 = !port4.cfg.invert;
T_OUT5 = !port5.cfg.invert;
T_OUT6 = !port6.cfg.invert;
T_OUT7 = !port7.cfg.invert;
P_OUT0 = 0; P_OUT1 = 0; P_OUT2 = 0; P_OUT3 = 0;
P_OUT4 = 0; P_OUT5 = 0; P_OUT6 = 0; P_OUT7 = 0;
#else
// In transistor switching mode set default "off"
// states and enable digital outputs
P_OUT0 = !!port0.cfg.invert;
P_OUT1 = !!port1.cfg.invert;
P_OUT2 = !!port2.cfg.invert;
P_OUT3 = !!port3.cfg.invert;
P_OUT4 = !!port4.cfg.invert;
P_OUT5 = !!port5.cfg.invert;
P_OUT6 = !!port6.cfg.invert;
P_OUT7 = !!port7.cfg.invert;
T_OUT0 = 0; T_OUT1 = 0; T_OUT2 = 0; T_OUT3 = 0;
T_OUT4 = 0; T_OUT5 = 0; T_OUT6 = 0; T_OUT7 = 0;
#endif
int ledCount = 0;
int modeHeld = 0;
byte enableNrpn = 0;
byte nrpnLo = 0;
byte nrpnHi = 0;
byte pwm=0;
int cycles = 0;
for(;;)
{
// Fetch the next MIDI message
byte msg = receiveMessage();
if(msg && !ledCount)
ledCount = LEDCOUNT_BRIEF;
// NOTE ON
if(((msg & 0xf0) == 0x90) && midiParams[1])
{
handleNoteOn(msg&0xF, midiParams[0], midiParams[1]);
}
// NOTE OFF
else if((((msg & 0xf0) == 0x80)||((msg & 0xf0) == 0x90)))
{
handleNoteOff(msg&0xF, midiParams[0]);
}
// CONTROLLER
else if((msg & 0xf0) == 0xb0)
{
if(enableNrpn)
{
switch(midiParams[0])
{
case MIDI_NRPN_HI:
nrpnHi = midiParams[1];
break;
case MIDI_NRPN_LO:
nrpnLo = midiParams[1];
break;
case MIDI_DATA_HI:
case MIDI_DATA_LO:
if(nrpnHi < NUM_PORTS)
handleNrpn(port[nrpnHi], nrpnLo, midiParams[1], (midiParams[0] == MIDI_DATA_LO));
else if(nrpnHi == NRPN_HI_EEPROM && nrpnLo == NRPN_LO_SAVE)
savePortInfo();
break;
default:
handleCC(msg&0xF, midiParams[0], midiParams[1]);
break;
}
}
else
{
handleCC(msg&0xF, midiParams[0], midiParams[1]);
}
}
// PITCH BEND
else if((msg & 0xf0) == 0xe0)
{
handlePitchBend(msg&0xF, midiParams[0]);
}
if(ledCount)
P_LED = !!(--ledCount);
// EVERY MS
if(timerTicked)
{
timerTicked = 0;
// Decrement nonzero port latch counts
for(i=0;i<NUM_PORTS;++i)
{
if(port[i]->status.count>0)
--port[i]->status.count;
}
// If the MODE button is held for 1 second
// this enables the receiving of config info
if(!enableNrpn)
{
if(P_MODE)//mode button released
{
modeHeld = 0;
}
else if(++modeHeld >= 1000)// mode button pressed for more than 1 second
{
P_LED = 1; delay_s(1); P_LED = 0;
enableNrpn = 1;
}
}
else if(isDirtyConfig)//config has been updated
{
if(!P_MODE)//
{
P_LED = 1; delay_s(1); P_LED = 0;
savePortInfo();
isDirtyConfig = 0;
}
else
{
++cycles;
if(!(cycles & 0x1FF) && !ledCount)
ledCount = LEDCOUNT_MEDIUM;
}
}
else
{
++cycles;
if(!(cycles & 0x7FF) && !ledCount)
ledCount = LEDCOUNT_LONG;
}
}
#ifdef RELAY_SWITCHER
// Manage outputs for relay switcher. PWM is ignored and switching
// is done on the TRIS bit. The outputs are active low for ON and
// floating for OFF
#define OUT_STATE(P) !(P.status.count)
#define OUT_STATEN(P) !!(P.status.count)
T_OUT0 = port0.cfg.invert? OUT_STATEN(port0) : OUT_STATE(port0);
T_OUT1 = port1.cfg.invert? OUT_STATEN(port1) : OUT_STATE(port1);
T_OUT2 = port2.cfg.invert? OUT_STATEN(port2) : OUT_STATE(port2);
T_OUT3 = port3.cfg.invert? OUT_STATEN(port3) : OUT_STATE(port3);
T_OUT4 = port4.cfg.invert? OUT_STATEN(port4) : OUT_STATE(port4);
T_OUT5 = port5.cfg.invert? OUT_STATEN(port5) : OUT_STATE(port5);
T_OUT6 = port6.cfg.invert? OUT_STATEN(port6) : OUT_STATE(port6);
T_OUT7 = port7.cfg.invert? OUT_STATEN(port7) : OUT_STATE(port7);
P_OUT0 = 0;
P_OUT1 = 0;
P_OUT2 = 0;
P_OUT3 = 0;
P_OUT4 = 0;
P_OUT5 = 0;
P_OUT6 = 0;
P_OUT7 = 0;
#elif TRS_SWITCHER
// Manage outputs for TRS relay switcher. PWM is ignored and switching
// is active high
#define OUT_STATE(P) !!(P.status.count)
#define OUT_STATEN(P) !(P.status.count)
P_OUT0 = port0.cfg.invert? OUT_STATEN(port0) : OUT_STATE(port0);
P_OUT1 = port1.cfg.invert? OUT_STATEN(port1) : OUT_STATE(port1);
P_OUT2 = port2.cfg.invert? OUT_STATEN(port2) : OUT_STATE(port2);
P_OUT3 = port3.cfg.invert? OUT_STATEN(port3) : OUT_STATE(port3);
P_OUT4 = port4.cfg.invert? OUT_STATEN(port4) : OUT_STATE(port4);
P_OUT5 = port5.cfg.invert? OUT_STATEN(port5) : OUT_STATE(port5);
P_OUT6 = port6.cfg.invert? OUT_STATEN(port6) : OUT_STATE(port6);
P_OUT7 = port7.cfg.invert? OUT_STATEN(port7) : OUT_STATE(port7);
#else
// Manage outputs for transistor switchers. PWM is used and switching
// is active high
#define OUT_STATE(P) (P.status.count && (pwm < P.status.duty))
#define OUT_STATEN(P) (!P.status.count && (pwm < P.status.duty))
P_OUT0 = port0.cfg.invert? OUT_STATEN(port0) : OUT_STATE(port0);
P_OUT1 = port1.cfg.invert? OUT_STATEN(port1) : OUT_STATE(port1);
P_OUT2 = port2.cfg.invert? OUT_STATEN(port2) : OUT_STATE(port2);
P_OUT3 = port3.cfg.invert? OUT_STATEN(port3) : OUT_STATE(port3);
P_OUT4 = port4.cfg.invert? OUT_STATEN(port4) : OUT_STATE(port4);
P_OUT5 = port5.cfg.invert? OUT_STATEN(port5) : OUT_STATE(port5);
P_OUT6 = port6.cfg.invert? OUT_STATEN(port6) : OUT_STATE(port6);
P_OUT7 = port7.cfg.invert? OUT_STATEN(port7) : OUT_STATE(port7);
if(++pwm>100)
pwm=0;
#endif
}
}
