/************************************************/ /*TFT Display Code for Display Controller */ /*Ver 1.0 */ /*PIC32MX795F512L-80I */ /*PIC32MX695F512L-80I */ /************************************************/ #include #include "MainBrain.h" uint8_t back_level; int fore_color; uint16_t back_color; unsigned hchar; unsigned vchar; unsigned Display_Read; unsigned row_start; unsigned row_end; unsigned col_start; unsigned col_end; int t; void Backlight_Control(uint8_t back_level) { //PWM Setup for backlight control //sets frequency PR2 = 300; OC1CONbits.OCTSEL = 0; //select TMR2 OC1CONbits.OCM = 6; //PWM mode, no fault pin OC1CONbits.ON = 1; //specifies duty cycle in percent if((back_level <= 10) | (back_level >= 0)) { if(back_level == 0) { OC1RS = 300; } if(back_level == 1) { OC1RS = 270; } if(back_level == 2) { OC1RS = 243; } if(back_level == 3) { OC1RS = 216; } if(back_level == 4) { OC1RS = 189; } if(back_level == 5) { OC1RS = 162; } if(back_level == 6) { OC1RS = 135; } if(back_level == 7) { OC1RS = 108; } if(back_level == 8) { OC1RS = 81; } if(back_level == 9) { OC1RS = 54; } if(back_level == 10) { OC1RS = 27; } } T2CONbits.ON = 1; return; } void Speaker_Control(unsigned freq) { //PWM Setup for speaker control //sets frequency PR3 = freq; OC2CONbits.OCTSEL = 1; //select TMR3 OC2CONbits.OCM = 6; //PWM mode, no fault pin OC2CONbits.ON = 1; OC2RS = PR3 / 2; if(freq != 0) { T3CONbits.ON = 1; } return; } void Display_Init(void) { //Configure Pin for D/C TRISFbits.TRISF3 = 0; //Select Display (/CS) PORTFbits.RF13 = 0; //Software RESET //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; PMDIN = 0x01; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; //>120mS Delay //to allow display to complete reset //set Timer 5 prescaler /256 T5CONbits.TCKPS = 7; Delay(65535); T5CONbits.TCKPS = 0; //Select Display (/CS) PORTFbits.RF13 = 0; //SLPOUT //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; PMDIN = 0x011; while(PMMODEbits.BUSY == 1); //Set pixel format = 16-bit //05h = 16-bit //06h = 18-bit //07h = 24-bit //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; PMDIN = 0x03a; while(PMMODEbits.BUSY == 1); //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 1; PMDIN = 0x05; while(PMMODEbits.BUSY == 1); //Set Screen Rotation //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; //MADCTL PMDIN = 0x036; while(PMMODEbits.BUSY == 1); //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 1; //D7 (MY) //D6 (MX) //D5 (MV) //D4 (ML) //D3 (RGB) 1=BGR. 0=RGB //D2 (reserved) //D1 (SS) //D0 (GS) //0x28 = wide screen, connector on righthand side //0xe8 = wide screen, connector on Lefthand side PMDIN = 0x28; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; return; } //00h - no operation void Display_NOP(void) { //Select Display (/CS) PORTFbits.RF13 = 0; //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; //Command 00h = NOP PMDIN = 0x00; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; return; } //01 - software reset void Display_SWRESET(void) { //Select Display (/CS) PORTFbits.RF13 = 0; //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; //Command 01h = SWRESET PMDIN = 0x01; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; return; } //0Ah - read power mode void Display_RDDPM(void) { //Select Display (/CS) PORTFbits.RF13 = 0; //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; //Command 0ah = RDDPM PMDIN = 0x0a; while(PMMODEbits.BUSY == 1); //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 1; //Dummy Read Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); //Read Display Data Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; return; } //0Bh - read display MADCTL void Display_RDDMADCTL(void) { //Select Display (/CS) PORTFbits.RF13 = 0; //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; //Command 0bh = RDDPM PMDIN = 0x0b; while(PMMODEbits.BUSY == 1); //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 1; //Dummy Read Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); //Read Display Data Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; return; } //0Ch - get pixel format void Display_RDDCOLMOD(void) { //Select Display (/CS) PORTFbits.RF13 = 0; //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; //Command 0ch = RDDCOLMOD PMDIN = 0x0c; while(PMMODEbits.BUSY == 1); //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 1; //Dummy Read Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); //Read Display Data Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; return; } //0Dh - get display mode void Display_RDDIM(void) { //Select Display (/CS) PORTFbits.RF13 = 0; //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; //Command 0dh = RDDIM PMDIN = 0x0d; while(PMMODEbits.BUSY == 1); //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 1; //Dummy Read Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); //Read Display Data Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; return; } //0Eh - get signal mode void Display_RDDSM(void) { //Select Display (/CS) PORTFbits.RF13 = 0; //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; //Command 0eh = RDDSM PMDIN = 0x0e; while(PMMODEbits.BUSY == 1); //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 1; //Dummy Read Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); //Read Display Data Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; return; } //0Fh - get diagnostic result void Display_RDDSDR(void) { //Select Display (/CS) PORTFbits.RF13 = 0; //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; //Command 0fh = RDDSDR PMDIN = 0x0f; while(PMMODEbits.BUSY == 1); //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 1; //Dummy Read Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); //Read Display Data Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; return; } //10h - enter sleep mode void Display_SLPIN(void) { //Select Display (/CS) PORTFbits.RF13 = 0; //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; //Command 10h = SLPIN PMDIN = 0x10; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; return; } //11h - exit sleep mode void Display_SLPOUT(void) { //Select Display (/CS) PORTFbits.RF13 = 0; //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; //Command 11h = SLPOUT PMDIN = 0x11; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; return; } //12h - enter partial mode void Display_PTLON(void) { //Select Display (/CS) PORTFbits.RF13 = 0; //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; //Command 12h = PTLON PMDIN = 0x12; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; return; } //13h - enter normal mode void Display_NORON(void) { //Select Display (/CS) PORTFbits.RF13 = 0; //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; //Command 13h = NORON PMDIN = 0x13; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; return; } //20h - exit inversion mode void Display_INVOFF(void) { //Select Display (/CS) PORTFbits.RF13 = 0; //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; //Command 20h = INVOFF PMDIN = 0x20; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; return; } //21h - enter inversion mode void Display_INVON(void) { //Select Display (/CS) PORTFbits.RF13 = 0; //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; //Command 21h = INVON PMDIN = 0x21; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; return; } //28h - display off void Display_DISPOFF(void) { //Select Display (/CS) PORTFbits.RF13 = 0; //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; //Command 28h = DSPOFF PMDIN = 0x28; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; return; } //29h - display on void Display_DISPON(void) { //Select Display (/CS) PORTFbits.RF13 = 0; //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; //Command 29h = DISPON PMDIN = 0x29; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; return; } //2a - set column address void Display_CASET(unsigned col_start, unsigned col_end) { if(col_end == 0) { col_end = col_start + 15; } //Select Display (/CS) PORTFbits.RF13 = 0; //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; PMDIN = 0x02a; while(PMMODEbits.BUSY == 1); //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 1; //break in to bytes HI and LO //Column Start //HI if(col_start > 0xff) { PMDIN = 1; } else { PMDIN = 0; } while(PMMODEbits.BUSY == 1); //LO PMDIN = col_start; while(PMMODEbits.BUSY == 1); //Column End //HI if(col_end > 0xff) { PMDIN = 1; } else { PMDIN = 0; } while(PMMODEbits.BUSY == 1); //LO PMDIN = col_end; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; return; } //2Bh - set row address void Display_RASET(unsigned row_start, unsigned row_end) { if(row_end == 0) { row_end = row_start + 21; } //Select Display (/CS) PORTFbits.RF13 = 0; //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; PMDIN = 0x02b; while(PMMODEbits.BUSY == 1); //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 1; //break in to bytes HI and LO //Row Start //HI if(row_start > 0xff) { PMDIN = 1; } else { PMDIN = 0; } while(PMMODEbits.BUSY == 1); //LO PMDIN = row_start; while(PMMODEbits.BUSY == 1); //Row End //HI if(row_end > 0xff) { PMDIN = 1; } else { PMDIN = 0; } while(PMMODEbits.BUSY == 1); //LO PMDIN = row_end; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; return; } //2Ch - memory write void Display_RAMWR(void) { //Select Display (/CS) PORTFbits.RF13 = 0; //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; //Command 2Ch = RAMWR PMDIN = 0x2C; while(PMMODEbits.BUSY == 1); //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 1; //pixel data is then written here //until another command is given //Select Display (/CS) //PORTFbits.RF13 = 1; return; } //2Eh - memory read void Display_RAMRD(void) { //Select Display (/CS) PORTFbits.RF13 = 0; //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; //Command 2eh = RDDSM PMDIN = 0x2e; while(PMMODEbits.BUSY == 1); //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 1; //Dummy Read Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); //Read Display Data Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; return; } //30h - Set_partial_area void Display_PLTAR(unsigned SR_HI, unsigned SR_LO, unsigned ER_HI, unsigned ER_LO) { //Select Display (/CS) PORTFbits.RF13 = 0; //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; //Command 30h PMDIN = 0x30; while(PMMODEbits.BUSY == 1); //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 1; //Upper byte start row PMDIN = SR_HI; while(PMMODEbits.BUSY == 1); //Lower byte start row PMDIN = SR_LO; while(PMMODEbits.BUSY == 1); //Upper byte end row PMDIN = ER_HI; while(PMMODEbits.BUSY == 1); //Upper byte end row PMDIN = ER_LO; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; return; } //BFh - get device ID void Display_GETDEVICEID(void) { int temp; //Select Display (/CS) PORTFbits.RF13 = 0; //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 0; //Command bfh = RDDSDR PMDIN = 0xbf; while(PMMODEbits.BUSY == 1); //RF3 = D/C 1=Data, 0=Command PORTFbits.RF3 = 1; //Dummy Read Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); //MIPI Alliance code Display_Read = PMDIN; while(PMMODEbits.BUSY == 1); Display_Read = Display_Read << 8; temp = PMDIN; while(PMMODEbits.BUSY == 1); Display_Read = temp + Display_Read; Display_Read = Display_Read << 8; //Device ID code temp = PMDIN; while(PMMODEbits.BUSY == 1); Display_Read = temp + Display_Read; Display_Read = Display_Read << 8; temp = PMDIN; while(PMMODEbits.BUSY == 1); Display_Read = temp + Display_Read; Display_Read = Display_Read << 8; //single-byte Escape or Exit Code (0xFF) temp = PMDIN; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; return; } //draws a rectangular block of colored pixels void Display_Rect(unsigned col_start, unsigned col_end, unsigned row_start, unsigned row_end, unsigned rect_color) { int i; unsigned a = col_start; unsigned b = row_start; unsigned c = col_end; unsigned d = row_end; Display_CASET(col_start, col_end - 1); Display_RASET(row_start, row_end - 1); Display_RAMWR(); //Select Display (/CS) PORTFbits.RF13 = 0; for(i=0;i<(col_end - col_start) * (row_end - row_start); i++) { PMDIN = rect_color; while(PMMODEbits.BUSY == 1); } //Select Display (/CS) PORTFbits.RF13 = 1; col_start = a; row_start = b; col_end = c; row_end = d; return; } void Display_CLRSCN(uint16_t back_color) { int i; Display_CASET(0, 479); Display_RASET(0, 319); Display_RAMWR(); for(i=0;i<=153600;i++) { PMDIN = back_color; while(PMMODEbits.BUSY == 1); } return; } //Writes a character to the screen void WriteChar(unsigned col_start, unsigned row_start, unsigned ascii_char, int fore_color) { //Makes sure no out of bounds if(ascii_char > 0x7F || ascii_char < 0) { ascii_char = 0x2a; } int x; int text_char = ascii_char - 32; int off_set = lut[text_char]; int read = courier_new_16pt_bold[off_set]; int a = 0b10000000; int pixel = 0; int s = 0; int i; col_end = col_start + 15; row_end = row_start + 21; Display_CASET(col_start, col_end); Display_RASET(row_start, row_end); Display_RAMWR(); for(s=0;s<=45;s++) { for(i=0;i<=7;i++) { x = read & a; if(x > 0) { pixel = fore_color; } else { pixel = back_color; } //Select Display (/CS) PORTFbits.RF13 = 0; PMDIN = pixel; while(PMMODEbits.BUSY == 1); //Select Display (/CS) PORTFbits.RF13 = 1; a = a / 2; } off_set++; read = courier_new_16pt_bold[off_set]; a = 0b10000000; } //this keeps track of the horizontal position. hchar = hchar + 15; return; } //Writes a null terminated string from a previously defined array void WriteString(unsigned col_start, unsigned row_start, char array_name[], int fore_color) { int offset = 0; //must initialize test_char to something other than \0 //so we might as well use the array data char test_char = array_name[offset];; while(test_char != '\0') { test_char = array_name[offset]; Display_CASET(col_start, col_start + 15); WriteChar(col_start, row_start, test_char, fore_color); offset++; col_start = col_start + 15; } //cleans up the extra white space hchar = hchar - 15; }