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DATAINFO/Example Code/Embedded C/PIC18/C18/PIC18F4520/DL1416 Smart Displays/DL1416.c

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/*==================================================================================*/
#include "DL1416.h" // Include DL1416 library file */
#ifdef xc8 // If XC8 Compiler is used */
#include "mcc_generated_files/mcc.h" // Include generated libraries if used */
#endif // */
/*==================================================================================*/
void DL1416_Init() // Initialisation function */
{ // */
#ifdef DATA_PORTA // If DL1416 data lines are on PORTA */
#ifdef c18 // If C18 is used - supports PIC18F4520 */
ADCON1 = 0x0F; // Analogue pins On PORTA set to digital*/
CMCON = 0b111; // Disable PORTA Comparators */
#endif // */
#ifdef xc8 // If XC8 is used - no support for F4520*/
ANSELbits.ANS0 = 0; // Disable analogue functions on RA0 */
ANSELbits.ANS1 = 0; // Disable analogue functions on RA1 */
ANSELbits.ANS2 = 0; // Disable analogue functions on RA2 */
ANSELbits.ANS3 = 0; // Disable analogue functions on RA3 */
ANSELbits.ANS4 = 0; // Disable analogue functions on RA5 */
SLRCONbits.SLRA = 0; // Set PORTA slew rate to standard */
#endif // */
#define DATA_PORT LATA // DATA_PORT macro is LATA */
#define TRIS_DATA_PORT TRISA // TRIS_DATA_PORT macro is TRISA */
#define DL1416_D0 LATAbits.LATA0 // Used to control cursor operations */
#endif // */
#ifdef CTRL_PORTA // If DL1416 control lines are on PORTA */
#ifdef c18 // If C18 is used - supports PIC18F4520 */
ADCON1 = 0x0F; // Analogue pins On PORTA set to digital*/
CMCON = 0b111; // Disable PORTA Comparators */
#endif // */
#ifdef xc8 // If XC8 is used - no support for F4520*/
ANSELbits.ANS0 = 0; // Disable analogue functions on RA0 */
ANSELbits.ANS1 = 0; // Disable analogue functions on RA1 */
ANSELbits.ANS2 = 0; // Disable analogue functions on RA2 */
ANSELbits.ANS3 = 0; // Disable analogue functions on RA3 */
ANSELbits.ANS4 = 0; // Disable analogue functions on RA5 */
SLRCONbits.SLRA = 0; // Set PORTA slew rate to standard */
#endif // */
#define CTRL_PORT LATA // CTRL_PORT macro is LATA */
#define TRIS_CTRL_PORT TRISA // TRIS_CTRL_PORT macro is TRISA */
#define DL1416_A0 LATAbits.LATA0 // Pin A0 is at LATA bit 0 */
#define DL1416_A1 LATAbits.LATA1 // Pin A1 is at LATA bit 1 */
#define DL1416_CU LATAbits.LATA2 // Pin CU is at LATA bit 2 */
#define DL1416_WR LATAbits.LATA3 // Pin WR is at LATA bit 3 */
#ifdef DL1416_SINGLE // If single DL1416 is used/defined */
#define DL1416_CE0 LATAbits.LATA4 // Pin CE is at LATA bit 4 (default) */
#endif // */
#endif // */
/*==================================================================================*/
#ifdef DATA_PORTB // If DL1416 data lines are on PORTB */
#ifdef c18 // If C18 is used - supports PIC18F4520 */
ADCON1 = 0x07; // Analogue pins On PORTB set to digital*/
#endif // */
#ifdef xc8 // If XC8 is used - no support for F4520*/
ANSELH = 0; // Set all PORTB pins to digital */
#endif // */
INTCON2bits.RBPU = 1; // Internal port B Pull-Ups off */
#define DATA_PORT LATB // DATA_PORT macro is LATB */
#define TRIS_DATA_PORT TRISB // TRIS_DATA_PORT macro is TRISB */
#define DL1416_D0 LATBbits.LATB0 // Used to control cursor operations */
#endif // */
#ifdef CTRL_PORTB // If DL1416 control lines are on PORTB */
#ifdef c18 // If C18 is used - supports PIC18F4520 */
ADCON1 = 0x07; // Analogue pins On PORTB set to digital*/
#endif // */
#ifdef xc8 // If XC8 is used - no support for F4520*/
ANSELH = 0; // Set all PORTB pins to digital */
#endif // */
INTCON2bits.RBPU = 1; // Internal port B Pull-Ups off */
#define CTRL_PORT LATB // CTRL_PORT macro is LATB */
#define TRIS_CTRL_PORT TRISB // TRIS_CTRL_PORT macro is TRISB */
#define DL1416_A0 LATBbits.LATB0 // Pin A0 is at LATB bit 0 */
#define DL1416_A1 LATBbits.LATB1 // Pin A1 is at LATB bit 1 */
#define DL1416_CU LATBbits.LATB2 // Pin CU is at LATB bit 2 */
#define DL1416_WR LATBbits.LATB3 // Pin WR is at LATB bit 3 */
#ifdef DL1416_SINGLE // If single DL1416 is used/defined */
#define DL1416_CE0 LATBbits.LATB4 // Pin CE is at LATB bit 4 (default) */
#endif // */
#endif // */
/*==================================================================================*/
#ifdef DATA_PORTC // If DL1416 data lines are on PORTC */
#define DATA_PORT LATC // DATA_PORT macro is LATC */
#define TRIS_DATA_PORT TRISC // TRIS_DATA_PORT macro is TRISC */
#define DL1416_D0 LATCbits.LATC0 // Used to control cursor operations */
#endif // */
#ifdef CTRL_PORTC // If DL1416 control lines are on PORTC */
#define CTRL_PORT LATC // CTRL_PORT macro is LATC */
#define TRIS_CTRL_PORT TRISC // TRIS_CTRL_PORT macro is TRISC */
#define DL1416_A0 LATCbits.LATC0 // Pin A0 is at LATC bit 0 */
#define DL1416_A1 LATCbits.LATC1 // Pin A1 is at LATC bit 1 */
#define DL1416_CU LATCbits.LATC2 // Pin CU is at LATC bit 2 */
#define DL1416_WR LATCbits.LATC3 // Pin WR is at LATC bit 3 */
#ifdef DL1416_SINGLE // If single DL1416 is used/defined */
#define DL1416_CE0 LATCbits.LATC4 // Pin CE is at LATC bit 4 (default) */
#endif // */
#endif // */
/*==================================================================================*/
#ifdef DATA_PORTD // If DL1416 data lines are on PORTD */
#define DATA_PORT LATD // DATA_PORT macro is LATD */
#define TRIS_DATA_PORT TRISD // TRIS_DATA_PORT macro is TRISD */
#define DL1416_D0 LATDbits.LATD0 // Used to control cursor operations */
#endif // */
#ifdef CTRL_PORTD // If DL1416 control lines are on PORTD */
#define CTRL_PORT LATD // CTRL_PORT macro is LATD */
#define TRIS_CTRL_PORT TRISD // TRIS_CTRL_PORT macro is TRISD */
#define DL1416_A0 LATDbits.LATD0 // Pin A0 is at LATD bit 0 */
#define DL1416_A1 LATDbits.LATD1 // Pin A1 is at LATD bit 1 */
#define DL1416_CU LATDbits.LATD2 // Pin CU is at LATD bit 2 */
#define DL1416_WR LATDbits.LATD3 // Pin WR is at LATD bit 3 */
#ifdef DL1416_SINGLE // If single DL1416 is used/defined */
#define DL1416_CE0 LATDbits.LATD4 // Pin CE is at LATD bit 4 (default) */
#endif // */
#endif // */
/*==================================================================================*/
TRIS_DATA_PORT = 0x00; // Configure Data port as output */
TRIS_CTRL_PORT = 0x00; // Configure Control port as output */
DATA_PORT = 0x20; // If display latches data, latch blank */
#ifdef DL1416_SINGLE // */
DL1416_Blank_Display(); // Blank DL1416 */
#endif // */
#ifdef DL1416_MUX // If multiple DL1416 displays are used */
#ifdef DL1416_DUAL // */
DL1416_Blank_Display(0); // Blank first DL1416 */
DL1416_Blank_Display(1); // Blank second DL1416 */
#endif // */
#ifdef DL1416_TRIPPLE // */
DL1416_Blank_Display(0); // Blank first DL1416 */
DL1416_Blank_Display(1); // Blank second DL1416 */
DL1416_Blank_Display(2); // Blank third DL1416 */
#endif // */
#ifdef DL1416_QUAD // */
DL1416_Blank_Display(0); // Blank first DL1416 */
DL1416_Blank_Display(1); // Blank second DL1416 */
DL1416_Blank_Display(2); // Blank third DL1416 */
DL1416_Blank_Display(3); // Blank fourth DL1416 */
#endif // */
#endif // */
} // */
//==================================================================================*/
void DL1416_Digit_Sel(char digit) // Function to address individual digits*/
{ // of currently enable DL1416 */
if(digit == DL1416_DIG1) // If received digit is the same DIG1 */
{ // */
DL1416_A0 = 0; // Set A0 to low */
DL1416_A1 = 0; // Set A1 to low */
} // */
if(digit == DL1416_DIG2) // If received digit is the same DIG2 */
{ // */
DL1416_A0 = 1; // Set A0 to high */
DL1416_A1 = 0; // Set A1 to low */
} // */
if(digit == DL1416_DIG3) // If received digit is the same DIG3 */
{ // */
DL1416_A0 = 0; // Set A0 to low */
DL1416_A1 = 1; // Set A1 to high */
} // */
if(digit == DL1416_DIG4) // If received digit is the same DIG4 */
{ // */
DL1416_A0 = 1; // Set A0 to high */
DL1416_A1 = 1; // Set A1 to high */
} // */
} // */
//==================================================================================*/
#ifdef DL1416_SINGLE // If only a single DL1416 is used */
void DL1416_Print_C(char data,char dig_sel) // Prints char on specific digit */
{ // */
DL1416_CE0 = 0; // Enable CE pin for first DL1416 */
DL1416_CU = 1; // Disable Cursor Control */
DL1416_Digit_Sel(dig_sel); // Configure the address pins */
DL1416_WR = 0; // Activate the Write pin */
// */
DATA_PORT = data; // Latch the data out from DATA_PORT */
// */
Nop(); // Execute a NOP, DL1416 timing */
DL1416_WR = 1; // Disable the Write pin */
DL1416_CU = 0; // Enable the cursor control */
DL1416_CE0 = 1; // Disable display 1 enable pin */
} // */
//==================================================================================*/
void DL1416_Blank_Display() // Function to blank a DL1416 */
{ // */
unsigned int i = 0; // Array index variable */
for(i = 0; i < 4; i++) // Loop through & load the space char */
{ // essentially clearing each digit */
DL1416_Print_C(DL1416_space, i); // Load space to each digit */
} // */
} // */
#endif // */
//==================================================================================*/
void DL1416_Cursor_Ctrl(char dig_sel,char cmd)//Function to control cursor */
{ // */
DL1416_CE0 = 0; // Enable CE pin for first DL1416 */
DL1416_CU = 0; // Disable Cursor Control */
DL1416_WR = 0; // Activate the Write pin */
// */
DL1416_Digit_Sel(dig_sel); // Address specified digit of DL1416 */
// */
if(cmd == CMD_CUR_STORE) // If command to store was received */
{ // */
DL1416_D0 = 1; // Latch D0 of DL1416 to 1 to store */
} // */
if(cmd == CMD_CUR_CLEAR) // If command to clear was received */
{ // */
DL1416_D0 = 0; // Latch D0 of DL1416 to 0 to clear */
} // */
DL1416_WR = 1; // Disable the Write pin */
Nop(); // Execute a NOP, DL1416 timing */
DL1416_CU = 1; // Enable the cursor control */
DL1416_CE0 = 1; // Disable display 1 enable pin */
} // */
//==================================================================================*/
#ifdef DL1416_MUX // If multiple DL1416 displays are used */
void DL1416_MUX_Print_C(char data, char dig_sel, char disp_sel) // */
{ // Sequence of inputting data to DL1416 */
if(disp_sel == 0) // If first DL1416 is selected */
{ // */
DL1416_CE0 = 0; // Enable CE pin for first DL1416 */
} // */
if(disp_sel == 1) // If second DL1416 is selected */
{ // */
DL1416_CE1 = 0; // Enable CE pin for second DL1416 */
} // */
#ifdef DL1416_TRIPPLE || DL1416_QUAD // */
if(disp_sel == 2) // */
{ // */
DL1416_CE2 = 0; // Enable CE pin for third DL1416 */
} // */
#endif // */
#ifdef DL1416_QUAD // */
if(disp_sel == 3) // */
{ // */
DL1416_CE3 = 0; // Enable CE pin for fourth DL1416 */
} // */
#endif // */
DL1416_CU = 1; // Disable Cursor Control */
DL1416_Digit_Sel(dig_sel); // Configure the address pins */
DL1416_WR = 0; // Activate the Write pin */
// */
DATA_PORT = data; // Latch the data out from DATA_PORT */
// */
Nop(); // Execute a NOP, DL1416 timing */
DL1416_WR = 1; // Disable the Write pin */
DL1416_CU = 0; // Enable the cursor control */
if(disp_sel == 0) // If first DL1416 is selected */
{ // */
DL1416_CE0 = 1; // Disable display 1 enable pin */
} // */
if(disp_sel == 1) // If second DL1416 is selected */
{ // */
DL1416_CE1 = 1; // Disable CE pin for second DL1416 */
} // */
#ifdef DL1416_TRIPPLE || DL1416_QUAD // */
if(disp_sel == 2) // */
{ // */
DL1416_CE2 = 1; // Disable CE pin for third DL1416 */
} // */
#endif // */
#ifdef DL1416_QUAD // */
if(disp_sel == 3) // */
{ // */
DL1416_CE3 = 1; // Disable CE pin for fourth DL1416 */
} // */
#endif // */
} // */
//==================================================================================*/
void DL1416_Blank_MUX_Display(char disp_sel)// Function to blank a DL1416 */
{ // */
unsigned int i = 0; // Array index variable */
for(i = 0; i < 4; i++) // Loop through & load the space char */
{ // essentially clearing each digit */
DL1416_Print_C(DL1416_space,i, disp_sel);// Load space to each digit */
} // */
} // */
//==================================================================================*/
void DL1416_WriteTo_MUX_Display(char *data, char cmd) // Writes data to display */
{ // */
unsigned int itr = 0; // Variable used to go though data array*/
while(itr < 7) // While itr is less than 7 */
{ // */
if(itr <= 3) // Check if itr is less or equal to 3 */
{ // */
DL1416_Print_C(data_in[itr], itr, 0); // Load data to 1st 3 digits */
} // */
if(itr >= 3) // Check if itr is more or equal to 4 */
{ // */
DL1416_Print_C(data_in[itr+1],itr-3,1);// Load data to 2nd 4 digits */
} // */
itr++; // Increment indexing variable */
if(cmd == DL1416_MUX_ON) // If DL1416 is MUXed include delay */
{ // */
#ifdef c18 // */
Delay1KTCYx(0); // Delay for a bit */
#endif // */
#ifdef xc8 // */
__delay_ms(500); // Delay for a bit */
#endif // */
} // */
} // */
} // */
//==================================================================================*/
void DL1416_MUX_Cursor_Ctrl(char dig_sel, char disp_sel, char cmd) // */
{ // */
if(disp_sel == 0)
{ // */
DL1416_CE0 = 0;
} // */
if(disp_sel == 1)
{ // */
DL1416_CE1 = 0;
} // */
#ifdef DL1416_TRIPPLE || DL1416_QUAD
if(disp_sel == 1)
{ // */
DL1416_CE2 = 0;
} // */
#endif // */
#ifdef DL1416_QUAD
if(disp_sel == 1)
{ // */
DL1416_CE3 = 0;
} // */
#endif // */
DL1416_CU = 0;
DL1416_WR = 0;
// */
DL1416_Digit_Sel(dig_sel);
// */
if(cmd == CMD_CUR_STORE) // If command to store was received */
{ // */
DL1416_D0 = 1; // Latch D0 of DL1416 to 1 to store */
} // */
if(cmd == CMD_CUR_CLEAR) // If command to clear was received */
{ // */
DL1416_D0 = 0; // Latch D0 of DL1416 to 0 to clear */
} // */
DL1416_WR = 1;
Nop();
DL1416_CU = 1;
// */
if(disp_sel == 0)
{ // */
DL1416_CE0 = 1;
} // */
if(disp_sel == 1)
{ // */
DL1416_CE1 = 1;
} // */
#ifdef DL1416_TRIPPLE || DL1416_QUAD
if(disp_sel == 1)
{ // */
DL1416_CE2 = 1;
} // */
#endif // */
#ifdef DL1416_QUAD
if(disp_sel == 1)
{ // */
DL1416_CE3 = 1;
} // */
#endif // */
} // */
//==================================================================================*/
#endif