47 lines
2.0 KiB
C
47 lines
2.0 KiB
C
// clang-format off
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// upload_speed 921600
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// board lolin32
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#ifndef _WEMOS32MATRIX_H
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#define _WEMOS32MATRIX_H
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#include <stdint.h>
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#define HAS_LED NOT_A_PIN // no LED
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// LED Matrix display settings
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#define HAS_MATRIX_DISPLAY 1 // Uncomment to enable LED matrix display output
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#define LED_MATRIX_WIDTH (32*2) // Width (cols) in pixels (LEDs) of your display, must be 32X
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#define LED_MATRIX_HEIGHT (16*1) // Height (rows) in pixels (LEDs) of your display, must be 16X
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// Pin numbers work fine for Wemos Lolin32 board (all used pins are on 1 side of the board)
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// Explanation of pin signals see https://learn.adafruit.com/32x16-32x32-rgb-led-matrix/new-wiring
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#define MATRIX_DISPLAY_SCAN_US 500 // Matrix display scan rate in microseconds (1ms is about 'acceptable')
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#define LED_MATRIX_LATCHPIN 13 // LAT (or STB = Strobe)
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#define LED_MATRIX_CLOCKPIN 32 // CLK
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#define LED_MATRIX_EN_74138 12 // EN (or OE)
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#define LED_MATRIX_LA_74138 14 // LA (or A)
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#define LED_MATRIX_LB_74138 27 // LB (or B)
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#define LED_MATRIX_LC_74138 25 // LC (or C)
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#define LED_MATRIX_LD_74138 26 // LD (or D)
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#define LED_MATRIX_DATA_R1 33 // R1 (or R0)
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// CLK: The clock signal moves the data bits from pin R1 ("red") in the shift registers
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// LAT: The latch signal enables LEDs according to the shift register's contents
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// Line Selects: LA, LB, LC, LD select which rows of the display are currently lit (0 .. 15)
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// OE: Output enable switches the LEDs on/off while transitioning from one row to the next
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/*
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How it works:
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1. clock out 8 bytes for columns via R1 and CLK (8 * 8 bit -> 64 columns)
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2. OE disable (LEDs off)
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3. select line to lit with LA/LB/LC/LD hex coded (4 bit -> 16 rows)
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4. latch data from shift registers to columns
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5. OE enable (LEDs on)
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6. repeat with step1 for next line
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*/
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#define DISABLE_BROWNOUT 1 // comment out if you want to keep brownout feature
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#endif |