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MarlinFirmware/Marlin/Max7219_Debug_LEDs.cpp
Scott Lahteine 5851c2d36f MAX7219 followup (#7564) 
* Add MAX7219_DEBUG to Travis CI testing

* Tweak config and use standard pin naming for MAX7219_DEBUG

* MAX7219: Apply coding standards, use macros, etc.

* Make code work...
2017-08-31 11:44:43 -05:00

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/**
* 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 off by default, but can be enabled to facilitate the display of
* extra debug information during code development. It assumes the existence 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, then connect up the pins assigned
* in Configuration_adv.h. For example, on the Re-ARM you could use:
*
* #define MAX7219_CLK_PIN 77
* #define MAX7219_DIN_PIN 78
* #define MAX7219_LOAD_PIN 79
*
* Max7219_init() is called automatically at startup, and then there are a number of
* support functions available to control the LEDs 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(uint8_t row, uint8_t col);
* void Max7219_LED_Off(uint8_t row, uint8_t col);
* void Max7219_LED_Toggle(uint8_t row, uint8_t col);
* void Max7219_Clear_Row(uint8_t row);
* void Max7219_Clear_Column(uint8_t col);
* void Max7219_Set_Row(uint8_t row, uint8_t val);
* void Max7219_Set_Column(uint8_t col, uint8_t val);
* void Max7219_idle_tasks();
*/
#include "MarlinConfig.h"
#if ENABLED(MAX7219_DEBUG)
#include "Marlin.h"
#include "planner.h"
#include "stepper.h"
#include "Max7219_Debug_LEDs.h"
static uint8_t LEDs[8] = { 0 };
void Max7219_PutByte(uint8_t data) {
for (uint8_t i = 8; i--;) {
WRITE(MAX7219_CLK_PIN, LOW); // tick
WRITE(MAX7219_DIN_PIN, (data & 0x80) ? HIGH : LOW); // send 1 or 0 based on data bit
WRITE(MAX7219_CLK_PIN, HIGH); // tock
data <<= 1;
}
}
void Max7219(const uint8_t reg, const uint8_t data) {
WRITE(MAX7219_LOAD_PIN, LOW); // begin
Max7219_PutByte(reg); // specify register
Max7219_PutByte(data); // put data
WRITE(MAX7219_LOAD_PIN, LOW); // and tell the chip to load the data
WRITE(MAX7219_LOAD_PIN, HIGH);
}
void Max7219_LED_Set(const uint8_t row, const uint8_t col, const bool on) {
if (row > 7 || col > 7) return;
if (TEST(LEDs[row], col) == on) return; // if LED is already on/off, leave alone
if (on) SBI(LEDs[row], col); else CBI(LEDs[row], col);
Max7219(8 - row, LEDs[row]);
}
void Max7219_LED_On(const uint8_t row, const uint8_t col) {
Max7219_LED_Set(row, col, true);
}
void Max7219_LED_Off(const uint8_t row, const uint8_t col) {
Max7219_LED_Set(row, col, false);
}
void Max7219_LED_Toggle(const uint8_t row, const uint8_t col) {
if (row > 7 || col > 7) return;
if (TEST(LEDs[row], col))
Max7219_LED_Off(row, col);
else
Max7219_LED_On(row, col);
}
void Max7219_Clear_Column(const uint8_t col) {
if (col > 7) return;
LEDs[col] = 0;
Max7219(8 - col, LEDs[col]);
}
void Max7219_Clear_Row(const uint8_t row) {
if (row > 7) return;
for (uint8_t c = 0; c <= 7; c++)
Max7219_LED_Off(c, row);
}
void Max7219_Set_Row(const uint8_t row, const uint8_t val) {
if (row > 7) return;
for (uint8_t b = 0; b <= 7; b++)
if (TEST(val, b))
Max7219_LED_On(7 - b, row);
else
Max7219_LED_Off(7 - b, row);
}
void Max7219_Set_Column(const uint8_t col, const uint8_t val) {
if (col > 7) return;
LEDs[col] = val;
Max7219(8 - col, LEDs[col]);
}
void Max7219_init() {
uint8_t i, x, y;
SET_OUTPUT(MAX7219_DIN_PIN);
SET_OUTPUT(MAX7219_CLK_PIN);
OUT_WRITE(MAX7219_LOAD_PIN, 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 <= 7; i++) { // empty registers, turn all LEDs off
LEDs[i] = 0x00;
Max7219(i + 1, 0);
}
for (x = 0; x <= 7; x++) // Do an aesthetically pleasing pattern to fully test
for (y = 0; y <= 7; y++) { // the Max7219 module and LEDs. First, turn them
Max7219_LED_On(x, y); // all on.
delay(3);
}
for (x = 0; x <= 7; x++) // Now, turn them all off.
for (y = 0; y <= 7; 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 = 8; x--;) // Now, do the same thing from the opposite direction
for (y = 0; y <= 7; y++) {
Max7219_LED_On(x, y);
delay(2);
}
for (x = 8; x--;)
for (y = 0; y <= 7; 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() {
#if ENABLED(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;
int16_t 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;
NOMORE(current_depth, BLOCK_BUFFER_SIZE);
NOMORE(current_depth, 16); // if the BLOCK_BUFFER_SIZE is greater than 16, two lines
// of LEDs is enough to see if the buffer is draining
const uint8_t st = min(current_depth, last_depth),
en = max(current_depth, last_depth);
if (current_depth < last_depth)
for (uint8_t i = st; i <= en; i++) // clear the highest order LEDs
Max7219_LED_Off(i >> 1, MAX7219_DEBUG_STEPPER_QUEUE + (i & 1));
else
for (uint8_t i = st; i <= en; i++) // set the highest order LEDs
Max7219_LED_On(i >> 1, MAX7219_DEBUG_STEPPER_QUEUE + (i & 1));
last_depth = current_depth;
}
#endif
}
#endif // MAX7219_DEBUG
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