DigitalInfinity/ESP32-PaxCounter
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update wemos32matrix.h

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This commit is contained in:
Verkehrsrot 2019-07-15 22:54:59 +02:00
parent 72e36eb554
commit 7b260d100e
1 changed files with 14 additions and 3 deletions
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17
src/hal/wemos32matrix.h
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@ -26,11 +26,22 @@
#define LED_MATRIX_LD_74138 26 // LD (or D)
#define LED_MATRIX_DATA_R1 33 // R1 (or R0)
// CLK: The clock signal moves data bits from pin R1 ("red") in the shift registers
// LAT: The latch signal enables LEDs according to shift register contents
// Line Selects: LA, LB, LC, LD select which two rows of the display are currently lit
// CLK: The clock signal moves the data bits from pin R1 ("red") in the shift registers
// LAT: The latch signal enables LEDs according to the shift register's contents
// Line Selects: LA, LB, LC, LD select which rows of the display are currently lit (0 .. 15)
// OE: Output enable switches the LEDs on/off while transitioning from one row to the next
/*
How it works:
1. clock out 8 bytes for columns via R1 and CLK (8 * 8 bit -> 64 columns)
2. OE disable (LEDs off)
3. select line to lit with LA/LB/LC/LD hex coded (4 bit -> 16 rows)
4. latch data from shift registers to columns
5. OE enable (LEDs on)
6. repeat with step1 for next line
*/
#define DISABLE_BROWNOUT 1 // comment out if you want to keep brownout feature
#endif