/*********************************************************************
* Function: void SYSTEM_Initialize( SYSTEM_STATE state )
*
* Overview: Initializes the system.
*
* PreCondition: None
*
* Input: SYSTEM_STATE - the state to initialize the system into
*
* Output: None
*
********************************************************************/
void SYSTEM_Initialize( SYSTEM_STATE state )
{
//On the PIC24FJ64GB004 Family of USB microcontrollers, the PLL will not power up and be enabled
//by default, even if a PLL enabled oscillator configuration is selected (such as HS+PLL).
//This allows the device to power up at a lower initial operating frequency, which can be
//advantageous when powered from a source which is not gauranteed to be adequate for 32MHz
//operation. On these devices, user firmware needs to manually set the CLKDIV<PLLEN> bit to
//power up the PLL.
{
unsigned int pll_startup_counter = 600;
CLKDIVbits.PLLEN = 1;
while(pll_startup_counter--);
}
switch(state)
{
case SYSTEM_STATE_USB_HOST:
PRINT_SetConfiguration(PRINT_CONFIGURATION_UART);
break;
case SYSTEM_STATE_USB_HOST_HID_KEYBOARD:
LED_Enable(LED_USB_HOST_HID_KEYBOARD_DEVICE_READY);
//also setup UART here
PRINT_SetConfiguration(PRINT_CONFIGURATION_UART);
//timwuu 2015.04.11 LCD_CursorEnable(true);
TIMER_SetConfiguration(TIMER_CONFIGURATION_1MS);
break;
}
}
/*********************************************************************
* Function: void SYS_Initialize(void)
*
* Overview: Initializes the system.
*
* PreCondition: None
*
* Input: None
*
* Output: None
*
********************************************************************/
void SYS_Initialize()
{
TIMER_SetConfiguration(TIMER_CONFIGURATION_1MS);
ADC_SetConfiguration(ADC_CONFIGURATION_DEFAULT);
LED_Enable(LED_USB_HOST_MSD_DATA_LOGGER);
LED_Off(LED_USB_HOST_MSD_DATA_LOGGER);
BUTTON_Enable(BUTTON_USB_HOST_MSD_DATA_LOGGER);
}
/*********************************************************************
* Function: void SYSTEM_Initialize( SYSTEM_STATE state )
*
* Overview: Initializes the system.
*
* PreCondition: None
*
* Input: SYSTEM_STATE - the state to initialize the system into
*
* Output: None
*
********************************************************************/
void SYSTEM_Initialize( SYSTEM_STATE state )
{
switch(state)
{
case SYSTEM_STATE_USB_HOST:
ANSELA = 0x0000;
ANSELB = 0x0000;
ANSELC = 0x0000;
ANSELD = 0x0000;
ANSELE = 0x0000;
ANSELG = 0x0000;
// 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 = 58; /* 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);
PRINT_SetConfiguration(PRINT_CONFIGURATION_LCD);
LED_Enable(LED_USB_HOST_HID_MOUSE_DEVICE_READY);
break;
case SYSTEM_STATE_USB_HOST_HID_MOUSE:
PRINT_SetConfiguration(PRINT_CONFIGURATION_LCD);
LCD_CursorEnable(true);
TIMER_SetConfiguration(TIMER_CONFIGURATION_1MS);
break;
}
}
/*********************************************************************
* Function: void SYSTEM_Initialize( SYSTEM_STATE state )
*
* Overview: Initializes the system.
*
* PreCondition: None
*
* Input: SYSTEM_STATE - the state to initialize the system into
*
* Output: None
*
********************************************************************/
void SYSTEM_Initialize( SYSTEM_STATE state )
{
switch(state)
{
case SYSTEM_STATE_USB_HOST:
PRINT_SetConfiguration(PRINT_CONFIGURATION_OLED);
LED_Enable(LED_USB_HOST_HID_MOUSE_DEVICE_READY);
break;
case SYSTEM_STATE_USB_HOST_HID_MOUSE:
PRINT_SetConfiguration(PRINT_CONFIGURATION_LCD);
TIMER_SetConfiguration(TIMER_CONFIGURATION_1MS);
break;
}
}
/*********************************************************************
* Function: void SYS_Initialize( none )
*
* Overview: Initializes the system.
*
* PreCondition: None
*
* Input: None
*
* Output: None
*
********************************************************************/
void SYS_Initialize( )
{
ANSELA = 0x0000;
ANSELB = 0x0000;
ANSELC = 0x0000;
ANSELE = 0x0000;
ANSELG = 0x0000;
// 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 = 58; /* 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);
TIMER_SetConfiguration(TIMER_CONFIGURATION_1MS);
ADC_SetConfiguration(ADC_CONFIGURATION_DEFAULT);
LED_Enable(LED_USB_HOST_MSD_DATA_LOGGER);
LED_Off(LED_USB_HOST_MSD_DATA_LOGGER);
BUTTON_Enable(BUTTON_USB_HOST_MSD_DATA_LOGGER);
}
// *****************************************************************************
// *****************************************************************************
// Section: Main Entry Point
// *****************************************************************************
// *****************************************************************************
int main ( void )
{
/* Call the System Intialize routine*/
SYS_Initialize ( ) ;
/*Initialize Timer*/
TIMER_SetConfiguration ( TIMER_CONFIGURATION_RTCC ) ;
TRISGbits.TRISG7 = 1; //in breakout pin RF2 (row 1)
TRISGbits.TRISG2 = 1; //in breakout pin RA2 (row 2)
TRISCbits.TRISC0 = 1; //in breakout pin RB8 (row 3)
TRISCbits.TRISC1 = 1;//in breakout pin RB9 (row 4)
TRISEbits.TRISE12 = 0; //in breakout pin RB12 (col 1)
TRISCbits.TRISC2 = 0; //in breakout pin RB10 (col 2)
TRISEbits.TRISE14 = 0; //in breakout pin RB14 (col 3)
ANSELGbits.ANSG7 = 0; //Row 1-4 //configuring all pins as digital
ANSELGbits.ANSG2 = 0;
ANSELCbits.ANSC0 = 0;
ANSELCbits.ANSC1 = 0;
ANSELEbits.ANSE12 = 0; //Col 1-3
ANSELCbits.ANSC2 = 0;
ANSELEbits.ANSE14 = 0;
char return_key;
/* Infinite Loop */
while ( 1 )
{
return_key = 'X'; //initialize return key to default return variable from readKeyboard()
while(return_key == 'X'){ //while nothing is pressed, keep on making calls
return_key = readKeyboard();
}
if(return_key != 'X'){ //if return_key is not default key, print to LCD
//should transmit to UART at this point
LCD_PutChar(return_key);
}
while(readKeyboard() != 'X'){
//no operation till next key is pressed.
}
}
}
/*********************************************************************
* Function: void SYSTEM_Initialize( SYSTEM_STATE state )
*
* Overview: Initializes the system.
*
* PreCondition: None
*
* Input: SYSTEM_STATE - the state to initialize the system into
*
* Output: None
*
********************************************************************/
void SYSTEM_Initialize( SYSTEM_STATE state )
{
switch(state)
{
case SYSTEM_STATE_USB_HOST:
PRINT_SetConfiguration(PRINT_CONFIGURATION_RAM_BUFFER);
break;
case SYSTEM_STATE_USB_HOST_HID_KEYBOARD:
LED_Enable(LED_USB_HOST_HID_KEYBOARD_DEVICE_READY);
PRINT_SetConfiguration(PRINT_CONFIGURATION_RAM_BUFFER);
TIMER_SetConfiguration(TIMER_CONFIGURATION_1MS);
break;
}
}
/*********************************************************************
* Function: void SYSTEM_Initialize( SYSTEM_STATE state )
*
* Overview: Initializes the system.
*
* PreCondition: None
*
* Input: SYSTEM_STATE - the state to initialize the system into
*
* Output: None
*
********************************************************************/
void SYSTEM_Initialize( SYSTEM_STATE state )
{
switch(state)
{
case SYSTEM_STATE_USB_HOST:
//PRINT_SetConfiguration(PRINT_CONFIGURATION_UART);
//UART2Init(); //?timijk for DEBUGGING
break;
case SYSTEM_STATE_USB_HOST_HID_PICKIT:
LED_Enable(LED_USB_HOST_HID_PICKIT_DEVICE_READY);
//also setup UART here
//PRINT_SetConfiguration(PRINT_CONFIGURATION_UART);
//timijk 2015.04.11 LCD_CursorEnable(true);
UART2Init();
IEC1bits.U2RXIE= 1; //enable RXIE
TIMER_SetConfiguration(TIMER_CONFIGURATION_1MS);
break;
}
}