7d491aa015
The registers within the Max7219 can get corrupted a number of ways. This allows the Max7219 to be reset and fully initialized. And... it also allows the user to see the initialization pattern.
148 lines
6.9 KiB
C
148 lines
6.9 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.
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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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* If you are using the Max7219 matrix for firmware debug purposes in time sensitive
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* areas of the code, please be aware that the orientation (rotation) of the display can
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* affect the speed. The Max7219 can update a single column fairly fast. It is much
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* faster to do a Max7219_Set_Column() with a rotation of 90 or 270 degrees than to do
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* a Max7219_Set_Row(). The opposite is true for rotations of 0 or 180 degrees.
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*/
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#ifndef __MAX7219_DEBUG_LEDS_H__
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#define __MAX7219_DEBUG_LEDS_H__
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//
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// MAX7219 registers
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//
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#define max7219_reg_noop 0x00
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#define max7219_reg_digit0 0x01
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#define max7219_reg_digit1 0x02
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#define max7219_reg_digit2 0x03
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#define max7219_reg_digit3 0x04
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#define max7219_reg_digit4 0x05
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#define max7219_reg_digit5 0x06
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#define max7219_reg_digit6 0x07
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#define max7219_reg_digit7 0x08
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#define max7219_reg_decodeMode 0x09
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#define max7219_reg_intensity 0x0A
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#define max7219_reg_scanLimit 0x0B
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#define max7219_reg_shutdown 0x0C
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#define max7219_reg_displayTest 0x0F
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void Max7219_init();
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void Max7219_PutByte(uint8_t data);
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void Max7219_pulse_load();
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// Set a single register (e.g., a whole native row)
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void Max7219(const uint8_t reg, const uint8_t data);
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// Set a single LED by XY coordinate
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void Max7219_LED_Set(const uint8_t x, const uint8_t y, const bool on);
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void Max7219_LED_On(const uint8_t x, const uint8_t y);
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void Max7219_LED_Off(const uint8_t x, const uint8_t y);
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void Max7219_LED_Toggle(const uint8_t x, const uint8_t y);
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// Set all LEDs in a single column
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void Max7219_Set_Column(const uint8_t col, const uint32_t val);
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void Max7219_Clear_Column(const uint8_t col);
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// Set all LEDs in a single row
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void Max7219_Set_Row(const uint8_t row, const uint32_t val);
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void Max7219_Clear_Row(const uint8_t row);
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// 16 and 32 bit versions of Row and Column functions
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// Multiple rows and columns will be used to display the value if
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// the array of matrix LED's is too narrow to accomplish the goal
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void Max7219_Set_Rows_16bits(const uint8_t y, uint32_t val);
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void Max7219_Set_Rows_32bits(const uint8_t y, uint32_t val);
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void Max7219_Set_Columns_16bits(const uint8_t x, uint32_t val);
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void Max7219_Set_Columns_32bits(const uint8_t x, uint32_t val);
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// Quickly clear the whole matrix
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void Max7219_Clear();
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// Apply custom code to update the matrix
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void Max7219_idle_tasks();
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#ifndef MAX7219_ROTATE
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#define MAX7219_ROTATE 0
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#endif
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#define _ROT ((MAX7219_ROTATE + 360) % 360)
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#if _ROT == 0
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#define MAX7219_UPDATE_AXIS y // Fast line update axis for this orientation of the matrix display
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#define MAX7219_X_LEDS (8 * MAX7219_NUMBER_UNITS)
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#define MAX7219_Y_LEDS 8
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#define XOR_7219(x, y) LEDs[y + (x >> 3) * 8] ^= _BV(7 - (x & 0x07))
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#define SET_PIXEL_7219(x, y) LEDs[y + (x >> 3) * 8] |= _BV(7 - (x & 0x07))
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#define CLEAR_PIXEL_7219(x, y) LEDs[y + (x >> 3) * 8] &= (_BV(7 - (x & 0x07)) ^ 0xff)
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#define BIT_7219(x, y) TEST(LEDs[y + (x >> 3) * 8], 7 - (x & 0x07))
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#define SEND_7219(R) do{ for (int8_t jj = 0; jj < MAX7219_NUMBER_UNITS; jj++) Max7219(max7219_reg_digit0 + (R & 0x7), LEDs[(R & 0x7) + jj * 8]); Max7219_pulse_load(); }while(0)
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#elif _ROT == 90
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#define MAX7219_UPDATE_AXIS x // Fast line update axis for this orientation of the matrix display
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#define MAX7219_X_LEDS 8
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#define MAX7219_Y_LEDS (8 * MAX7219_NUMBER_UNITS)
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#define XOR_7219(x, y) LEDs[x + (((MAX7219_Y_LEDS - 1 - y) >> 3) * 8)] ^= _BV((y & 0x7))
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#define SET_PIXEL_7219(x, y) LEDs[x + (((MAX7219_Y_LEDS - 1 - y) >> 3) * 8)] |= _BV((y & 0x7))
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#define CLEAR_PIXEL_7219(x, y) LEDs[x + (((MAX7219_Y_LEDS - 1 - y) >> 3) * 8)] &= (_BV((y & 0x7)) ^ 0xff)
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#define BIT_7219(x, y) TEST(LEDs[x + (((MAX7219_Y_LEDS - 1 - y) >> 3) * 8)], (y & 0x7))
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#define SEND_7219(R) do{ for (int8_t jj = 0; jj < MAX7219_NUMBER_UNITS; jj++) Max7219(max7219_reg_digit0 + (R & 0x7), LEDs[(R & 0x7) + jj * 8]); Max7219_pulse_load(); }while(0)
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#elif _ROT == 180
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#define MAX7219_UPDATE_AXIS y // Fast line update axis for this orientation of the matrix display
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#define MAX7219_X_LEDS (8 * MAX7219_NUMBER_UNITS)
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#define MAX7219_Y_LEDS 8
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#define XOR_7219(x, y) LEDs[y + ((MAX7219_X_LEDS - 1 - x) >> 3) * 8] ^= _BV((x & 0x07))
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#define SET_PIXEL_7219(x, y) LEDs[y + ((MAX7219_X_LEDS - 1 - x) >> 3) * 8] |= _BV((x & 0x07))
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#define CLEAR_PIXEL_7219(x, y) LEDs[y + ((MAX7219_X_LEDS - 1 - x) >> 3) * 8] &= (_BV((x & 0x07)) ^ 0xff)
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#define BIT_7219(x, y) TEST(LEDs[y + ((MAX7219_X_LEDS - 1 - x) >> 3) * 8], ((x & 0x07)))
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#define SEND_7219(R) do{ for (int8_t jj = 0; jj < MAX7219_NUMBER_UNITS; jj++) Max7219(max7219_reg_digit7 - (R & 0x7), LEDs[(R & 0x7) + jj * 8]); Max7219_pulse_load(); }while(0)
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#elif _ROT == 270
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#define MAX7219_UPDATE_AXIS x // Fast line update axis for this orientation of the matrix display
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#define MAX7219_X_LEDS 8
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#define MAX7219_Y_LEDS (8 * MAX7219_NUMBER_UNITS)
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#define XOR_7219(x, y) LEDs[x + (y >> 3) * 8] ^= _BV(7 - (y & 0x7))
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#define SET_PIXEL_7219(x, y) LEDs[x + (y >> 3) * 8] |= _BV(7 - (y & 0x7))
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#define CLEAR_PIXEL_7219(x, y) LEDs[x + (y >> 3) * 8] &= (_BV(7 - (y & 0x7)) ^ 0xff)
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#define BIT_7219(x, y) TEST(LEDs[x + ( y >> 3) * 8], 7 - (y & 0x7))
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#define SEND_7219(R) do{ for (int8_t jj = 0; jj < MAX7219_NUMBER_UNITS; jj++) Max7219(max7219_reg_digit7 - (R & 0x7), LEDs[(R & 0x7) + jj * 8]); Max7219_pulse_load(); }while(0)
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#else
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#error "MAX7219_ROTATE must be a multiple of +/- 90°."
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#endif
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extern uint8_t LEDs[8 * MAX7219_NUMBER_UNITS];
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#endif // __MAX7219_DEBUG_LEDS_H__
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