src/modules/utils/panel/panels/smoothiepanel/LCDBang.h

   1 /*
   2       This file is part of Smoothie (http://smoothieware.org/). The motion control part is heavily based on Grbl (https://github.com/simen/grbl).
   3       Smoothie is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
   4       Smoothie is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
   5       You should have received a copy of the GNU General Public License along with Smoothie. If not, see <http://www.gnu.org/licenses/>.
   6 */
   7 #ifndef LCDBANG_H
   8 #define LCDBANG_H
   9 #include "mbed.h" // mbed.h lib
  10 #include "I2CBang.h"
  11
  12 void lcdbang_writenibble(I2C i2c, char c, bool command = false){
  13     const int addr = 0x40;
  14     char cmd[2];
  15     c <<= 4;
  16     c &= 0xF0;
  17     c |= 0x01;
  18     if(!command) c |= 0x02;
  19
  20     cmd[0] = 0x0C;
  21     cmd[1] = c;
  22     i2c.write(addr, cmd, 2);
  23     cmd[1] = c | 0x08;
  24     i2c.write(addr, cmd, 2);
  25     cmd[1] = c;
  26     i2c.write(addr, cmd, 2);
  27 //    wait_ms(1);
  28 }
  29
  30 void lcdbang_write(I2C i2c, char c, bool command = false){
  31     if(command){
  32         lcdbang_writenibble(i2c, c, command);
  33     }else{
  34         lcdbang_writenibble(i2c, c >> 4, command);
  35         lcdbang_writenibble(i2c, c, command);
  36     }
  37 }
  38
  39 void lcdbang_init(I2C i2c){
  40     const int addr = 0x40;
  41     char cmd[2];
  42     cmd[0] = 0x1C;
  43     cmd[1] = 0x00;
  44     i2c.write(addr, cmd, 2);
  45
  46     lcdbang_write(i2c, 0x3, true);
  47     wait_ms(50);
  48     lcdbang_write(i2c, 0x3, true);
  49     wait_ms(10);
  50     lcdbang_write(i2c, 0x3, true);
  51     wait_ms(10);
  52     lcdbang_write(i2c, 0x2, true);
  53     wait_ms(1);
  54
  55     lcdbang_write(i2c, 0x2, true);
  56     lcdbang_write(i2c, 0x8, true);
  57     wait_ms(1);
  58
  59     lcdbang_write(i2c, 0x0, true);
  60     lcdbang_write(i2c, 0x8, true);
  61     wait_ms(1);
  62
  63     lcdbang_write(i2c, 0x0, true);
  64     lcdbang_write(i2c, 0x1, true);
  65     wait_ms(1);
  66
  67     lcdbang_write(i2c, 0x0, true);
  68     lcdbang_write(i2c, 0x6, true);
  69     wait_ms(1);
  70
  71     lcdbang_write(i2c, 0x0, true);
  72     lcdbang_write(i2c, 0x2, true);
  73     wait_ms(1);
  74
  75     lcdbang_write(i2c, 0x0, true);
  76     lcdbang_write(i2c, 0xC, true);
  77     wait_ms(1);
  78 }
  79
  80 void lcdbang_print(I2C i2c, const char* msg){
  81     for(int i=0;msg[i];i++){
  82         lcdbang_write(i2c, msg[i]);
  83     }
  84 }
  85
  86 void lcdbang_contrast(I2C i2c, int contrast){
  87     // set dac pins as output and set dac
  88     i2cbang_init(i2c);
  89     i2cbang_start(i2c);
  90     i2cbang_write(i2c, 0xC0);
  91     i2cbang_write(i2c, 0x60);
  92     i2cbang_write(i2c, contrast >> 8);
  93     i2cbang_write(i2c, (contrast << 8) & 0xF0 );
  94     i2cbang_stop(i2c);
  95 }
  96
  97 #endif // LCDBANG_H
  98