/****************************************************************************
Function:
void SetLEDs(BYTE setting)
Summary:
change the LED settings of the boards
Description:
change the LED settings of the boards
Precondition:
None
Parameters:
BYTE setting - bitmap for desired LED setting (1 = On, 0 = Off)
bit 0 = LED 0
bit 1 = LED 1
bit 2 = LED 2
...
bit 7 = LED 7
Return Values:
None
Remarks:
None
***************************************************************************/
static void SetLEDs(BYTE setting)
{
if((setting & 0x01) == 0x01) { LED0_On(); } else { LED0_Off(); }
if((setting & 0x02) == 0x02) { LED1_On(); } else { LED1_Off(); }
if((setting & 0x04) == 0x04) { LED2_On(); } else { LED2_Off(); }
if((setting & 0x08) == 0x08) { LED3_On(); } else { LED3_Off(); }
if((setting & 0x10) == 0x10) { LED4_On(); } else { LED4_Off(); }
if((setting & 0x20) == 0x20) { LED5_On(); } else { LED5_Off(); }
if((setting & 0x40) == 0x40) { LED6_On(); } else { LED6_Off(); }
if((setting & 0x80) == 0x80) { LED7_On(); } else { LED7_Off(); }
}
void Led_On(uint8 led)
{
switch(led)
{
case eGreen:
LED0_On();
break;
case eBlue:
LED1_On();
break;
default:
break;
}
}
/****************************************************************************
Function:
int main(void)
Summary:
main function
Description:
main function
Precondition:
None
Parameters:
None
Return Values:
int - exit code for main function
Remarks:
None
***************************************************************************/
int main(void)
{
DWORD size = 0;
BOOL responseNeeded;
BYTE mode = 0;
BYTE wasMode = 0;
BYTE pushButtonValues = 0xFF;
BYTE potPercentage = 0xFF;
BOOL buttonsNeedUpdate = FALSE;
BOOL potNeedsUpdate = FALSE;
BOOL motorON = FALSE;
BOOL readyToRead = TRUE;
BOOL writeInProgress = FALSE;
BYTE tempValue = 0xFF;
BYTE errorCode;
ACCESSORY_APP_PACKET* command_packet = NULL;
CLKDIV = 0; /* set for default clock operations Fcyc = 4MHz */
AD1PCFGL = 0xffff;
AD1PCFGH = 0x0003;
BOOL connected_to_app = FALSE;
BOOL need_to_disconnect_from_app = FALSE;
#if defined(__PIC32MX__)
InitPIC32();
#endif
#if defined(__dsPIC33EP512MU810__) || defined (__PIC24EP512GU810__)
// Configure the device PLL to obtain 60 MIPS operation. The crystal
// frequency is 8MHz. Divide 8MHz by 2, multiply by 60 and divide by
// 2. This results in Fosc of 120MHz. The CPU clock frequency is
// Fcy = Fosc/2 = 60MHz. Wait for the Primary PLL to lock and then
// configure the auxilliary PLL to provide 48MHz needed for USB
// Operation.
PLLFBD = 38; /* M = 60 */
CLKDIVbits.PLLPOST = 0; /* N1 = 2 */
CLKDIVbits.PLLPRE = 0; /* N2 = 2 */
OSCTUN = 0;
/* Initiate Clock Switch to Primary
* Oscillator with PLL (NOSC= 0x3)*/
__builtin_write_OSCCONH(0x03);
__builtin_write_OSCCONL(0x01);
while (OSCCONbits.COSC != 0x3);
// Configuring the auxiliary PLL, since the primary
// oscillator provides the source clock to the auxiliary
// PLL, the auxiliary oscillator is disabled. Note that
// the AUX PLL is enabled. The input 8MHz clock is divided
// by 2, multiplied by 24 and then divided by 2. Wait till
// the AUX PLL locks.
ACLKCON3 = 0x24C1;
ACLKDIV3 = 0x7;
ACLKCON3bits.ENAPLL = 1;
while(ACLKCON3bits.APLLCK != 1);
TRISBbits.TRISB5 = 0;
LATBbits.LATB5 = 1;
#endif
USBInitialize(0);
AndroidAppStart(&myDeviceInfo);
responseNeeded = FALSE;
mInitPOT();
InitializeTimer2For_PWM();
PwmInit();
//InitMOTOR();
DEBUG_Init(0);
InitAllLEDs();
while(1)
{
//Keep the USB stack running
USBTasks();
//If the device isn't attached yet,
if(device_attached == FALSE || mode == 1)
{
buttonsNeedUpdate = TRUE;
potNeedsUpdate = TRUE;
need_to_disconnect_from_app = FALSE;
connected_to_app = FALSE;
size = 0;
/**/
BYTE curPush = GetPushbuttons();
if ((curPush == 0x8) || (mode == 1)) {
LED0_On();
mode = 1;
if (wasMode == 0) {
pot2LEDs();
PwmInit();
}
tempValue = ReadPOT();
wasMode = 1;
//If it is different than the last time we read the pot, then we need
// to send it to the Android device
if(tempValue != potPercentage) {
potNeedsUpdate = TRUE;
//setRPM(tempValue);
setPWM();
}
}
if ((curPush == 0x4) || (mode == 0)) {
mode = 0;
//LED0_Off();
if (wasMode == 1) {
SetLEDs(0b00000000);
wasMode = 0;
setRPM(0);
}
//Reset the accessory state variables
InitAllLEDs();
//Continue to the top of the while loop to start the check over again.
continue;
}
/* //Reset the accessory state variables
InitAllLEDs();
//Continue to the top of the while loop to start the check over again.
continue;
}*/
//}
}
//If the accessory is ready, then this is where we run all of the demo code
if(readyToRead == TRUE && mode == 0)
{
errorCode = AndroidAppRead(device_handle, (BYTE*)&read_buffer, (DWORD)sizeof(read_buffer));
//If the device is attached, then lets wait for a command from the application
if( errorCode != USB_SUCCESS)
{
//Error
DEBUG_PrintString("Error trying to start read");
}
else
{
readyToRead = FALSE;
}
}
size = 0;
if(AndroidAppIsReadComplete(device_handle, &errorCode, &size) == TRUE)
{
//We've received a command over the USB from the Android device.
if(errorCode == USB_SUCCESS)
{
//Maybe process the data here. Maybe process it somewhere else.
command_packet = (ACCESSORY_APP_PACKET*)&read_buffer[0];
}
else
{
//Error
DEBUG_PrintString("Error trying to complete read request");
}
}
while(size > 0)
{
if(connected_to_app == FALSE)
{
if(command_packet->command == COMMAND_APP_CONNECT)
{
connected_to_app = TRUE;
need_to_disconnect_from_app = FALSE;
}
}
else
{
switch(command_packet->command)
{
case COMMAND_SET_LEDS:
SetLEDs(command_packet->data);
break;
case COMMAND_APP_DISCONNECT:
need_to_disconnect_from_app = TRUE;
break;
case COMMAND_SET_PWM:
setRPM(command_packet->data);
break;
default:
//Error, unknown command
DEBUG_PrintString("Error: unknown command received");
break;
}
}
//All commands in this example are two bytes, so remove that from the queue
size -= 2;
//And move the pointer to the next packet (this works because
// all command packets are 2 bytes. If variable packet size
// then need to handle moving the pointer by the size of the
// command type that arrived.
command_packet++;
if(need_to_disconnect_from_app == TRUE)
{
break;
}
}
if(size == 0)
{
readyToRead = TRUE;
}
//Get the current pushbutton settings
tempValue = GetPushbuttons();
//If the current button settings are different than the last time
// we read the button values, then we need to send an update to the
// attached Android device
if(tempValue != pushButtonValues)
{
buttonsNeedUpdate = TRUE;
pushButtonValues = tempValue;
}
//Get the current potentiometer setting
tempValue = ReadPOT();
//If it is different than the last time we read the pot, then we need
// to send it to the Android device
if(tempValue != potPercentage)
{
potNeedsUpdate = TRUE;
potPercentage = tempValue;
}
//If there is a write already in progress, we need to check its status
if( writeInProgress == TRUE )
{
if(AndroidAppIsWriteComplete(device_handle, &errorCode, &size) == TRUE)
{
writeInProgress = FALSE;
if(need_to_disconnect_from_app == TRUE)
{
connected_to_app = FALSE;
need_to_disconnect_from_app = FALSE;
}
if(errorCode != USB_SUCCESS)
{
//Error
DEBUG_PrintString("Error trying to complete write");
}
}
}
if((need_to_disconnect_from_app == TRUE) && (writeInProgress == FALSE))
{
outgoing_packet.command = COMMAND_APP_DISCONNECT;
outgoing_packet.data = 0;
writeInProgress = TRUE;
errorCode = AndroidAppWrite(device_handle,(BYTE*)&outgoing_packet, 2);
if( errorCode != USB_SUCCESS )
{
DEBUG_PrintString("Error trying to send button update");
}
}
if(connected_to_app == FALSE)
{
//If the app hasn't told us to start sending data, let's not do anything else.
continue;
}
//If we need up update the button status on the Android device and we aren't
// already busy in a write, then we can send the new button data.
if((buttonsNeedUpdate == TRUE) && (writeInProgress == FALSE))
{
outgoing_packet.command = COMMAND_UPDATE_PUSHBUTTONS;
outgoing_packet.data = pushButtonValues;
errorCode = AndroidAppWrite(device_handle,(BYTE*)&outgoing_packet, 2);
if( errorCode != USB_SUCCESS )
{
DEBUG_PrintString("Error trying to send button update");
}
buttonsNeedUpdate = FALSE;
writeInProgress = TRUE;
}
//If we need up update the pot status on the Android device and we aren't
// already busy in a write, then we can send the new pot data.
if((potNeedsUpdate == TRUE) && (writeInProgress == FALSE))
{
outgoing_packet.command = COMMAND_UPDATE_POT;
outgoing_packet.data = potPercentage;
errorCode = AndroidAppWrite(device_handle,(BYTE*)&outgoing_packet, 2);
if( errorCode != USB_SUCCESS )
{
DEBUG_PrintString("Error trying to send pot update");
}
potNeedsUpdate = FALSE;
writeInProgress = TRUE;
}
} //while(1) main loop
}
