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237 lines
8.2 KiB
C++
237 lines
8.2 KiB
C++
/**
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* Marlin 3D Printer Firmware
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* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* Based on Sprinter and grbl.
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* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/**
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* This module is off by default, but can be enabled to facilitate the display of
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* extra debug information during code development. It assumes the existence of a
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* Max7219 LED Matrix. A suitable device can be obtained on eBay similar to this:
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* http://www.ebay.com/itm/191781645249 for under $2.00 including shipping.
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*
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* Just connect up +5v and GND to give it power, then connect up the pins assigned
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* in Configuration_adv.h. For example, on the Re-ARM you could use:
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*
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* #define MAX7219_CLK_PIN 77
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* #define MAX7219_DIN_PIN 78
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* #define MAX7219_LOAD_PIN 79
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*
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* Max7219_init() is called automatically at startup, and then there are a number of
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* support functions available to control the LEDs in the 8x8 grid.
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*
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* void Max7219_init();
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* void Max7219_PutByte(uint8_t data);
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* void Max7219(uint8_t reg, uint8_t data);
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* void Max7219_LED_On(uint8_t row, uint8_t col);
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* void Max7219_LED_Off(uint8_t row, uint8_t col);
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* void Max7219_LED_Toggle(uint8_t row, uint8_t col);
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* void Max7219_Clear_Row(uint8_t row);
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* void Max7219_Clear_Column(uint8_t col);
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* void Max7219_Set_Row(uint8_t row, uint8_t val);
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* void Max7219_Set_Column(uint8_t col, uint8_t val);
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* void Max7219_idle_tasks();
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*/
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#include "MarlinConfig.h"
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#if ENABLED(MAX7219_DEBUG)
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#include "Marlin.h"
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#include "planner.h"
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#include "stepper.h"
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#include "Max7219_Debug_LEDs.h"
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static uint8_t LEDs[8] = { 0 };
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void Max7219_PutByte(uint8_t data) {
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for (uint8_t i = 8; i--;) {
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WRITE(MAX7219_CLK_PIN, LOW); // tick
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WRITE(MAX7219_DIN_PIN, (data & 0x80) ? HIGH : LOW); // send 1 or 0 based on data bit
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WRITE(MAX7219_CLK_PIN, HIGH); // tock
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data <<= 1;
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}
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}
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void Max7219(const uint8_t reg, const uint8_t data) {
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WRITE(MAX7219_LOAD_PIN, LOW); // begin
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Max7219_PutByte(reg); // specify register
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Max7219_PutByte(data); // put data
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WRITE(MAX7219_LOAD_PIN, LOW); // and tell the chip to load the data
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WRITE(MAX7219_LOAD_PIN, HIGH);
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}
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void Max7219_LED_Set(const uint8_t row, const uint8_t col, const bool on) {
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if (row > 7 || col > 7) return;
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if (TEST(LEDs[row], col) == on) return; // if LED is already on/off, leave alone
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if (on) SBI(LEDs[row], col); else CBI(LEDs[row], col);
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Max7219(8 - row, LEDs[row]);
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}
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void Max7219_LED_On(const uint8_t row, const uint8_t col) {
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Max7219_LED_Set(row, col, true);
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}
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void Max7219_LED_Off(const uint8_t row, const uint8_t col) {
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Max7219_LED_Set(row, col, false);
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}
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void Max7219_LED_Toggle(const uint8_t row, const uint8_t col) {
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if (row > 7 || col > 7) return;
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if (TEST(LEDs[row], col))
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Max7219_LED_Off(row, col);
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else
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Max7219_LED_On(row, col);
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}
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void Max7219_Clear_Column(const uint8_t col) {
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if (col > 7) return;
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LEDs[col] = 0;
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Max7219(8 - col, LEDs[col]);
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}
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void Max7219_Clear_Row(const uint8_t row) {
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if (row > 7) return;
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for (uint8_t c = 0; c <= 7; c++)
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Max7219_LED_Off(c, row);
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}
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void Max7219_Set_Row(const uint8_t row, const uint8_t val) {
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if (row > 7) return;
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for (uint8_t b = 0; b <= 7; b++)
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if (TEST(val, b))
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Max7219_LED_On(7 - b, row);
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else
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Max7219_LED_Off(7 - b, row);
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}
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void Max7219_Set_Column(const uint8_t col, const uint8_t val) {
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if (col > 7) return;
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LEDs[col] = val;
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Max7219(8 - col, LEDs[col]);
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}
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void Max7219_init() {
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uint8_t i, x, y;
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SET_OUTPUT(MAX7219_DIN_PIN);
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SET_OUTPUT(MAX7219_CLK_PIN);
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OUT_WRITE(MAX7219_LOAD_PIN, HIGH);
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//initiation of the max 7219
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Max7219(max7219_reg_scanLimit, 0x07);
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Max7219(max7219_reg_decodeMode, 0x00); // using an led matrix (not digits)
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Max7219(max7219_reg_shutdown, 0x01); // not in shutdown mode
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Max7219(max7219_reg_displayTest, 0x00); // no display test
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Max7219(max7219_reg_intensity, 0x01 & 0x0F); // the first 0x0F is the value you can set
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// range: 0x00 to 0x0F
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for (i = 0; i <= 7; i++) { // empty registers, turn all LEDs off
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LEDs[i] = 0x00;
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Max7219(i + 1, 0);
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}
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for (x = 0; x <= 7; x++) // Do an aesthetically pleasing pattern to fully test
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for (y = 0; y <= 7; y++) { // the Max7219 module and LEDs. First, turn them
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Max7219_LED_On(x, y); // all on.
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delay(3);
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}
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for (x = 0; x <= 7; x++) // Now, turn them all off.
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for (y = 0; y <= 7; y++) {
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Max7219_LED_Off(x, y);
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delay(3); // delay() is OK here. Max7219_init() is only called from
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} // setup() and nothing is running yet.
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delay(150);
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for (x = 8; x--;) // Now, do the same thing from the opposite direction
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for (y = 0; y <= 7; y++) {
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Max7219_LED_On(x, y);
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delay(2);
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}
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for (x = 8; x--;)
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for (y = 0; y <= 7; y++) {
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Max7219_LED_Off(x, y);
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delay(2);
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}
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}
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/**
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* These are sample debug features to demonstrate the usage of the 8x8 LED Matrix for debug purposes.
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* There is very little CPU burden added to the system by displaying information within the idle()
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* task.
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*
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* But with that said, if your debugging can be facilitated by making calls into the library from
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* other places in the code, feel free to do it. The CPU burden for a few calls to toggle an LED
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* or clear a row is not very significant.
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*/
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void Max7219_idle_tasks() {
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#if ENABLED(MAX7219_DEBUG_PRINTER_ALIVE)
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static int debug_cnt = 0;
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if (debug_cnt++ > 100) {
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Max7219_LED_Toggle(7, 7);
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debug_cnt = 0;
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}
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#endif
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#ifdef MAX7219_DEBUG_STEPPER_HEAD
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Max7219_Clear_Row(MAX7219_DEBUG_STEPPER_HEAD);
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Max7219_Clear_Row(MAX7219_DEBUG_STEPPER_HEAD + 1);
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if ( planner.block_buffer_head < 8)
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Max7219_LED_On( planner.block_buffer_head, MAX7219_DEBUG_STEPPER_HEAD);
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else
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Max7219_LED_On( planner.block_buffer_head-8, MAX7219_DEBUG_STEPPER_HEAD+1);
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#endif
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#ifdef MAX7219_DEBUG_STEPPER_TAIL
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Max7219_Clear_Row(MAX7219_DEBUG_STEPPER_TAIL);
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Max7219_Clear_Row(MAX7219_DEBUG_STEPPER_TAIL + 1);
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if ( planner.block_buffer_tail < 8)
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Max7219_LED_On( planner.block_buffer_tail, MAX7219_DEBUG_STEPPER_TAIL );
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else
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Max7219_LED_On( planner.block_buffer_tail-8, MAX7219_DEBUG_STEPPER_TAIL+1 );
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#endif
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#ifdef MAX7219_DEBUG_STEPPER_QUEUE
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static int16_t last_depth = 0;
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int16_t current_depth = planner.block_buffer_head - planner.block_buffer_tail;
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if (current_depth != last_depth) { // usually, no update will be needed.
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if (current_depth < 0) current_depth += BLOCK_BUFFER_SIZE;
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NOMORE(current_depth, BLOCK_BUFFER_SIZE);
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NOMORE(current_depth, 16); // if the BLOCK_BUFFER_SIZE is greater than 16, two lines
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// of LEDs is enough to see if the buffer is draining
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const uint8_t st = min(current_depth, last_depth),
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en = max(current_depth, last_depth);
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if (current_depth < last_depth)
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for (uint8_t i = st; i <= en; i++) // clear the highest order LEDs
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Max7219_LED_Off(i >> 1, MAX7219_DEBUG_STEPPER_QUEUE + (i & 1));
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else
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for (uint8_t i = st; i <= en; i++) // set the highest order LEDs
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Max7219_LED_On(i >> 1, MAX7219_DEBUG_STEPPER_QUEUE + (i & 1));
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last_depth = current_depth;
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}
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#endif
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}
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#endif // MAX7219_DEBUG
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