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| #include "oled_NHD-0216KZW-AB5.h" |
| #include "defines.h" |
| #include <delays.h> |
| #include <string.h> |
| #include <stdio.h> |
| |
| static OLED_CHAR_DATA oled_char_data; |
| static OLED_CHAR_DATA *oled_char_data_p = &oled_char_data; |
| |
| void NHD_Init() { |
| PARALLEL_RS_TRIS = 0; |
| PARALLEL_RW_TRIS = 0; |
| PARALLEL_EN_TRIS = 0; |
| |
| PARALLEL_D4_TRIS = 0; |
| PARALLEL_D5_TRIS = 0; |
| PARALLEL_D6_TRIS = 0; |
| PARALLEL_D7_TRIS = 0; |
| |
| oled_char_data_p->display_function = LCD_FUNCTIONSET | LCD_4BITMODE; |
| } |
| |
| void NHD_Begin(char cols, char rows) { |
| oled_char_data_p->num_lines = rows; |
| oled_char_data_p->current_line = 0; |
| |
| PARALLEL_RS_LAT = 0; |
| PARALLEL_RW_LAT = 0; |
| PARALLEL_EN_LAT = 0; |
| |
| PARALLEL_D4_LAT = 0; |
| PARALLEL_D5_LAT = 0; |
| PARALLEL_D6_LAT = 0; |
| PARALLEL_D7_LAT = 0; |
| |
| Delay10KTCYx(1); // ~1ms |
| |
| // Initialization sequence |
| NHD_Write_4_Bits(0x3); |
| NHD_Write_4_Bits(0x2); |
| NHD_Write_4_Bits(0x2); |
| NHD_Write_4_Bits(0x8); |
| NHD_Wait_For_Ready(); |
| |
| NHD_Send_Command(0x08); // Turn Off |
| NHD_Send_Command(0x01); // Clear Display |
| NHD_Send_Command(0x06); // Set Entry Mode |
| NHD_Send_Command(0x02); // Return to Home Position |
| NHD_Send_Command(0x0C); // Turn On |
| } |
| |
| void NHD_Clear() { |
| NHD_Send_Command(LCD_CLEARDISPLAY); |
| } |
| |
| void NHD_Home() { |
| NHD_Send_Command(LCD_RETURNHOME); |
| } |
| |
| void NHD_Set_Cursor(unsigned char col, unsigned char row) { |
| unsigned char row_offsets[] = {0x00, 0x40, 0x14, 0x54}; |
| if (row >= oled_char_data_p->num_lines) { |
| row = 0; |
| } |
| NHD_Send_Command(LCD_SETDDRAMADDR | (col + row_offsets[row])); |
| } |
| |
| void NHD_Display(char option) { |
| if (option) { |
| oled_char_data_p->display_control |= LCD_DISPLAYON; |
| } else { |
| oled_char_data_p->display_control &= ~LCD_DISPLAYON; |
| } |
| NHD_Send_Command(LCD_DISPLAYCONTROL | oled_char_data_p->display_control); |
| } |
| |
| void NHD_Blink(char option) { |
| if (option) { |
| oled_char_data_p->display_control |= LCD_BLINKON; |
| } else { |
| oled_char_data_p->display_control &= ~LCD_BLINKON; |
| } |
| NHD_Send_Command(LCD_DISPLAYCONTROL | oled_char_data_p->display_control); |
| } |
| |
| void NHD_Cursor(char option) { |
| if (option) { |
| oled_char_data_p->display_control |= LCD_CURSORON; |
| } else { |
| oled_char_data_p->display_control &= ~LCD_CURSORON; |
| } |
| NHD_Send_Command(LCD_DISPLAYCONTROL | oled_char_data_p->display_control); |
| } |
| |
| void NHD_Scroll_Display_Left() { |
| NHD_Send_Command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVELEFT); |
| } |
| |
| void NHD_Scroll_Display_Right() { |
| NHD_Send_Command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVERIGHT); |
| } |
| |
| void NHD_Left_To_Rigtht() { |
| oled_char_data_p->display_mode |= LCD_ENTRYLEFT; |
| NHD_Send_Command(LCD_ENTRYMODESET | oled_char_data_p->display_mode); |
| } |
| |
| void NHD_Right_To_Left() { |
| oled_char_data_p->display_mode &= ~LCD_ENTRYLEFT; |
| NHD_Send_Command(LCD_ENTRYMODESET | oled_char_data_p->display_mode); |
| } |
| |
| void NHD_Autoscroll(char option) { |
| if (option) { |
| oled_char_data_p->display_mode |= LCD_ENTRYSHIFTINCREMENT; |
| } else { |
| oled_char_data_p->display_mode &= ~LCD_ENTRYSHIFTINCREMENT; |
| } |
| NHD_Send_Command(LCD_ENTRYMODESET | oled_char_data_p->display_mode); |
| } |
| |
| void NHD_Create_Char(unsigned char location, unsigned char *charmap) { |
| char i; |
| location &= 0x7; |
| NHD_Send_Command(LCD_SETCGRAMADDR | (location << 3)); |
| for (i = 0; i < 8; i++) { |
| NHD_Send_Data(charmap[i]); |
| } |
| } |
| |
| void NHD_Send_Command(unsigned char value) { |
| PARALLEL_RS_LAT = 0; |
| PARALLEL_RW_LAT = 0; |
| NHD_Write_4_Bits(value>>4); |
| NHD_Write_4_Bits(value); |
| NHD_Wait_For_Ready(); |
| } |
| |
| void NHD_Send_Data(unsigned char value) { |
| PARALLEL_RS_LAT = 1; |
| PARALLEL_RW_LAT = 0; |
| NHD_Write_4_Bits(value>>4); |
| NHD_Write_4_Bits(value); |
| NHD_Wait_For_Ready(); |
| } |
| |
| void NHD_Pulse_Enable(void) { |
| PARALLEL_EN_LAT = 1; |
| Nop(); |
| Nop(); |
| PARALLEL_EN_LAT = 0; |
| } |
| |
| void NHD_Write_4_Bits(unsigned char value) { |
| PARALLEL_D4_LAT = (value) & 0x01; |
| PARALLEL_D5_LAT = (value>>1) & 0x01; |
| PARALLEL_D6_LAT = (value>>2) & 0x01; |
| PARALLEL_D7_LAT = (value>>3) & 0x01; |
| NHD_Pulse_Enable(); |
| } |
| |
| void NHD_Wait_For_Ready() { |
| char busy; |
| PARALLEL_BUSY_TRIS = 1; |
| PARALLEL_RS_LAT = 0; |
| PARALLEL_RW_LAT = 1; |
| do { |
| NHD_Pulse_Enable(); |
| Nop(); |
| busy = PARALLEL_BUSY_PORT; |
| NHD_Pulse_Enable(); |
| } while (busy); |
| PARALLEL_BUSY_TRIS = 0; |
| PARALLEL_RW_LAT = 0; |
| } |
| |
| void NHD_Write_String(const rom char *fmt, ...) { |
| unsigned char i, len; |
| unsigned char buffer[NHD_STRING_BUFFER_SIZE]; |
| |
| // Parse and create string |
| va_list args; |
| va_start(args, fmt); |
| vsprintf((char *) buffer, fmt, args); |
| va_end(args); |
| len = strlen((char *) buffer); |
| |
| // Make sure string to insert fits in buffer, truncate if necessary |
| if (len > NHD_STRING_BUFFER_SIZE) |
| len = NHD_STRING_BUFFER_SIZE; |
| |
| // Print buffer to string |
| for (i = 0; i < len; i++) { |
| NHD_Send_Data(buffer[i]); |
| } |
| } |