/**
* Marlin 3D Printer Firmware
* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
*
* Based on Sprinter and grbl.
* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
*
* This program 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.
*
* This program 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
/**
* This module is normally not enabled. It can be enabled to facilitate
* the display of extra debug information during code development.
* It assumes the existance of a Max7219 LED Matrix. A suitable
* device can be obtained on eBay similar to this: http://www.ebay.com/itm/191781645249
* for under $2.00 including shipping.
*
* Just connect up +5v and Gnd to give it power. And then 3 wires declared in the
* #define's below. Actual pin assignments can be changed in MAX7219_DEBUG section
* of configuration_adv.h
*
* #define Max7219_clock 77
* #define Max7219_data_in 78
* #define Max7219_load 79
*
* First call Max7219_init() and then there are a number of support functions available
* to control the LED's in the 8x8 grid.
*
* void Max7219_init();
* void Max7219_PutByte(uint8_t data);
* void Max7219(uint8_t reg, uint8_t data);
* void Max7219_LED_On( int8_t row, int8_t col);
* void Max7219_LED_Off( int8_t row, int8_t col);
* void Max7219_LED_Toggle( int8_t row, int8_t col);
* void Max7219_Clear_Row( int8_t row);
* void Max7219_Clear_Column( int8_t col);
*/
#include "Marlin.h"
#if ENABLED(MAX7219_DEBUG)
#include "planner.h"
#include "stepper.h"
#include "Max7219_Debug_LEDs.h"
static uint8_t LEDs[8] = {0};
void Max7219_PutByte(uint8_t data) {
uint8_t i = 8;
while(i > 0) {
digitalWrite( Max7219_clock, LOW); // tick
if (data & 0x80) // check bit
digitalWrite(Max7219_data_in,HIGH); // send 1
else
digitalWrite(Max7219_data_in,LOW); // send 0
digitalWrite(Max7219_clock, HIGH); // tock
data = data << 0x01;
--i; // move to lesser bit
}
}
void Max7219( uint8_t reg, uint8_t data) {
digitalWrite(Max7219_load, LOW); // begin
Max7219_PutByte(reg); // specify register
Max7219_PutByte(data); // put data
digitalWrite(Max7219_load, LOW); // and tell the chip to load the data
digitalWrite(Max7219_load,HIGH);
}
void Max7219_LED_On( int8_t row, int8_t col) {
int x_index;
if ( row>=8 || row<0 || col>=8 || col<0)
return;
if ( LEDs[row] & (0x01<<col) ) // if LED is already on, just leave
return;
LEDs[row] |= (0x01<<col);
x_index = 7-row;
Max7219( x_index+1, LEDs[row] );
}
void Max7219_LED_Off( int8_t row, int8_t col) {
int x_index;
if ( row>=8 || row<0 || col>=8 || col<0)
return;
if ( !(LEDs[row] & (0x01<<col)) ) // if LED is already off, just leave
return;
LEDs[row] ^= (0x01<<col);
x_index = 7-row;
Max7219( x_index+1, LEDs[row] );
}
void Max7219_LED_Toggle( int8_t row, int8_t col) {
if ( row>=8 || row<0 || col>=8 || col<0)
return;
if ( (LEDs[row] & (0x01<<col)) )
Max7219_LED_Off( row, col);
else
Max7219_LED_On( row, col);
}
void Max7219_Clear_Column( int8_t col) {
int x_index;
if ( col>=8 || col<0 )
return;
LEDs[col] = 0;
x_index = 7-col;
Max7219( x_index+1, LEDs[col] );
}
void Max7219_Clear_Row( int8_t row) {
int c;
if ( row>=8 || row<0 )
return;
for(c=0; c<8; c++)
Max7219_LED_Off( c, row);
}
void Max7219_Set_Row( int8_t row, uint8_t val) {
int b;
if ( row<0 || row>7 )
return;
if ( val<0 || val>255 )
return;
for(b=0; b<8; b++)
if ( val & (0x01 << b) )
Max7219_LED_On( 7-b, row);
else
Max7219_LED_Off( 7-b, row);
}
void Max7219_Set_Column( int8_t col, uint8_t val) {
int x_index;
if ( col>=8 || col<0 )
return;
if ( val<0 || val>255 )
return;
LEDs[col] = val;
x_index = 7-col;
Max7219( x_index+1, LEDs[col] );
}
void Max7219_init() {
int i, x, y;
pinMode(Max7219_data_in, OUTPUT);
pinMode(Max7219_clock, OUTPUT);
pinMode(Max7219_load, OUTPUT);
digitalWrite(Max7219_load, HIGH);
//initiation of the max 7219
Max7219(max7219_reg_scanLimit, 0x07);
Max7219(max7219_reg_decodeMode, 0x00); // using an led matrix (not digits)
Max7219(max7219_reg_shutdown, 0x01); // not in shutdown mode
Max7219(max7219_reg_displayTest, 0x00); // no display test
Max7219(max7219_reg_intensity, 0x01 & 0x0f); // the first 0x0f is the value you can set
// range: 0x00 to 0x0f
for (i=0; i<8; i++) { // empty registers, turn all LEDs off
LEDs[i] = 0x00;
Max7219(i+1,0);
}
for(x=0; x<8; x++) { // Do an austetically pleasing pattern to fully test
for(y=0; y<8; y++) { // the Max7219 module and LED's. First, turn them
Max7219_LED_On( x, y); // all on.
delay(3);
}
}
for(x=0; x<8; x++) { // Now, turn them all off.
for(y=0; y<8; y++) {
Max7219_LED_Off( x, y);
delay(3); // delay() is OK here. Max7219_init() is only called from
} // setup() and nothing is running yet.
}
delay(150);
for(x=7; x>=0; x--) { // Now, do the same thing from the opposite direction
for(y=0; y<8; y++) {
Max7219_LED_On( x, y);
delay(2);
}
}
for(x=7; x>=0; x--) {
for(y=0; y<8; y++) {
Max7219_LED_Off( x, y);
delay(2);
}
}
}
/*
* These are sample debug features to demonstrate the usage of the 8x8 LED Matrix for debug purposes.
* There is very little CPU burden added to the system by displaying information within the idle()
* task.
*
* But with that said, if your debugging can be facilitated by making calls into the library from
* other places in the code, feel free to do it. The CPU burden for a few calls to toggle an LED
* or clear a row is not very significant.
*/
void Max7219_idle_tasks() {
#ifdef MAX7219_DEBUG_PRINTER_ALIVE
static int debug_cnt=0;
if (debug_cnt++ > 100) {
Max7219_LED_Toggle(7,7);
debug_cnt = 0;
}
#endif
#ifdef MAX7219_DEBUG_STEPPER_HEAD
Max7219_Clear_Row(MAX7219_DEBUG_STEPPER_HEAD);
Max7219_Clear_Row(MAX7219_DEBUG_STEPPER_HEAD+1);
if ( planner.block_buffer_head < 8)
Max7219_LED_On( planner.block_buffer_head, MAX7219_DEBUG_STEPPER_HEAD);
else
Max7219_LED_On( planner.block_buffer_head-8, MAX7219_DEBUG_STEPPER_HEAD+1);
#endif
#ifdef MAX7219_DEBUG_STEPPER_TAIL
Max7219_Clear_Row(MAX7219_DEBUG_STEPPER_TAIL);
Max7219_Clear_Row(MAX7219_DEBUG_STEPPER_TAIL+1);
if ( planner.block_buffer_tail < 8)
Max7219_LED_On( planner.block_buffer_tail, MAX7219_DEBUG_STEPPER_TAIL );
else
Max7219_LED_On( planner.block_buffer_tail-8, MAX7219_DEBUG_STEPPER_TAIL+1 );
#endif
#ifdef MAX7219_DEBUG_STEPPER_QUEUE
static int16_t last_depth=0, current_depth;
uint8_t i;
current_depth = planner.block_buffer_head - planner.block_buffer_tail;
if (current_depth != last_depth) { // usually, no update will be needed.
if ( current_depth < 0 )
current_depth += BLOCK_BUFFER_SIZE;
if ( current_depth >= BLOCK_BUFFER_SIZE )
current_depth = BLOCK_BUFFER_SIZE;
if ( current_depth > 16 ) // if the BLOCK_BUFFER_SIZE is greater than 16 two lines
current_depth = 16; // of LED's is enough to see if the buffer is draining
if ( current_depth < last_depth )
for(i=current_depth; i<=last_depth; i++) { // clear the highest order LED's
if ( i & 1)
Max7219_LED_Off(i>>1, MAX7219_DEBUG_STEPPER_QUEUE+1);
else
Max7219_LED_Off(i>>1, MAX7219_DEBUG_STEPPER_QUEUE+0);
}
else
for(i=last_depth; i<=current_depth; i++) { // light up the highest order LED's
if ( i & 1)
Max7219_LED_On(i>>1, MAX7219_DEBUG_STEPPER_QUEUE+1);
else
Max7219_LED_On(i>>1, MAX7219_DEBUG_STEPPER_QUEUE+0);
}
last_depth = current_depth;
}
#endif
}
#endif //MAX7219_DEBUG