radex
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pico-led-matrix
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firmware: faster

main
radex 2024-04-15 00:41:00 +02:00
parent 69c6ab51aa
commit b8aa12aac5
Signed by: radex
SSH Key Fingerprint: SHA256:hvqRXAGG1h89yqnS+cyFTLKQbzjWD4uXIqw7Y+0ws30
1 changed files with 13 additions and 14 deletions
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27
firmware/src/main.cpp
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@ -2,6 +2,7 @@
#include "gfx_png.h"
#include "lodepng.h"
#include "pico/multicore.h"
#include "hardware/gpio.h"
#include "mbed_wait_api.h"
#define Serial Serial1
@ -19,18 +20,18 @@
#define ROW_SRCLR 10
inline void pulsePin(uint8_t pin) {
digitalWrite(pin, HIGH);
digitalWrite(pin, LOW);
gpio_put(pin, HIGH);
gpio_put(pin, LOW);
}
void clearShiftReg(uint8_t srclk, uint8_t srclr) {
digitalWrite(srclr, LOW);
gpio_put(srclr, LOW);
pulsePin(srclk);
digitalWrite(srclr, HIGH);
gpio_put(srclr, HIGH);
}
inline void outputEnable(uint8_t pin, bool enable) {
digitalWrite(pin, !enable);
gpio_put(pin, !enable);
}
#define ROW_COUNT 40
@ -57,6 +58,10 @@ void setup() {
memset(framebuffer, 0, sizeof(framebuffer));
// disable output
outputEnable(COL_OE, false);
outputEnable(ROW_OE, false);
// set up col pins
pinMode(COL_SER, OUTPUT);
pinMode(COL_OE, OUTPUT);
@ -71,20 +76,14 @@ void setup() {
pinMode(ROW_SRCLK, OUTPUT);
pinMode(ROW_SRCLR, OUTPUT);
// disable output
outputEnable(COL_OE, false);
outputEnable(ROW_OE, false);
// clear output - cols
digitalWrite(COL_SER, LOW);
clearShiftReg(COL_SRCLK, COL_SRCLR);
pulsePin(COL_RCLK);
outputEnable(COL_OE, true);
// clear output - rows
digitalWrite(ROW_SRCLR, HIGH);
digitalWrite(ROW_SER, HIGH);
clearShiftReg(ROW_SRCLK, ROW_SRCLR);
outputEnable(ROW_OE, true);
pulsePin(ROW_RCLK);
// clear frames
frameIndex = 0;
@ -181,7 +180,7 @@ void loop() {
// apply brightness
bool gotLight = (pxValue >> (4 + brightnessPhase)) & 1;
// set value (note: inverted logic)
digitalWrite(COL_SER, !gotLight);
gpio_put(COL_SER, !gotLight);
// push value
pulsePin(COL_SRCLK);