radex
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pico-led-matrix
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firmware: clean up

main
radex 2024-03-24 22:17:52 +01:00
parent aad9a9088c
commit 7b8a451a35
Signed by: radex
SSH Key Fingerprint: SHA256:hvqRXAGG1h89yqnS+cyFTLKQbzjWD4uXIqw7Y+0ws30
1 changed files with 39 additions and 39 deletions
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78
firmware/src/main.cpp
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@ -16,10 +16,26 @@
#define ROW_SRCLK 5
#define ROW_SRCLR 4
inline void pulsePin(uint8_t pin) {
digitalWrite(pin, HIGH);
digitalWrite(pin, LOW);
}
void clearShiftReg(uint8_t srclk, uint8_t srclr) {
digitalWrite(srclr, LOW);
pulsePin(srclk);
digitalWrite(srclr, HIGH);
}
inline void outputEnable(uint8_t pin, bool enable) {
digitalWrite(pin, !enable);
}
#define ROW_COUNT 20 //24
#define COL_COUNT 20 //21
#define MS_PER_FRAME 33
#define FPS 30
#define MS_PER_FRAME 1000 / FPS
uint16_t frameIndex = 0;
uint16_t lastDecodedFrame = 0;
@ -37,6 +53,8 @@ void setup() {
Serial.begin(9600);
Serial.println("Hello");
memset(framebuffer, 0, sizeof(framebuffer));
// set up col pins
pinMode(COL_SER, OUTPUT);
pinMode(COL_OE, OUTPUT);
@ -53,25 +71,19 @@ void setup() {
// clear output - cols
digitalWrite(COL_SER, LOW);
digitalWrite(COL_OE, HIGH);
outputEnable(COL_OE, false);
digitalWrite(COL_SRCLR, LOW);
digitalWrite(COL_RCLK, HIGH);
digitalWrite(COL_RCLK, LOW);
digitalWrite(COL_SRCLR, HIGH);
clearShiftReg(COL_SRCLK, COL_SRCLR);
digitalWrite(COL_OE, LOW);
outputEnable(COL_OE, true);
// clear output - rows
digitalWrite(ROW_SER, LOW);
digitalWrite(ROW_OE, HIGH);
outputEnable(ROW_OE, false);
digitalWrite(ROW_SRCLR, LOW);
digitalWrite(ROW_RCLK, HIGH);
digitalWrite(ROW_RCLK, LOW);
digitalWrite(ROW_SRCLR, HIGH);
clearShiftReg(ROW_SRCLK, ROW_SRCLR);
digitalWrite(ROW_OE, LOW);
outputEnable(ROW_OE, true);
// clear frames
frameIndex = 0;
@ -96,7 +108,7 @@ void loop() {
char c = Serial.read();
if (c == 'p') {
Serial.println("Paused. Press any key to continue.");
digitalWrite(ROW_OE, HIGH);
outputEnable(ROW_OE, false);
while (Serial.available() == 0) {
Serial.read();
delay(50);
@ -114,7 +126,7 @@ void loop() {
}
// hide output
digitalWrite(ROW_OE, HIGH);
outputEnable(ROW_OE, false);
// decode png
if (lastDecodedFrame != frameIndex) {
@ -150,10 +162,7 @@ void loop() {
}
// clear columns
digitalWrite(COL_SRCLR, LOW);
digitalWrite(COL_SRCLK, HIGH);
digitalWrite(COL_SRCLK, LOW);
digitalWrite(COL_SRCLR, HIGH);
clearShiftReg(COL_SRCLK, COL_SRCLR);
// start selecting columns
digitalWrite(COL_SER, HIGH);
@ -166,21 +175,16 @@ void loop() {
digitalWrite(ROW_OE, !brightPhase);
// next column
digitalWrite(COL_SRCLK, HIGH);
digitalWrite(COL_SRCLK, LOW);
pulsePin(COL_SRCLK);
// only one column
digitalWrite(COL_SER, LOW);
// we use 7/8 stages on shift registers for columns
if (x % 7 == 0) {
digitalWrite(COL_SRCLK, HIGH);
digitalWrite(COL_SRCLK, LOW);
pulsePin(COL_SRCLK);
}
// clear row
digitalWrite(ROW_SRCLR, LOW);
digitalWrite(ROW_SRCLK, HIGH);
digitalWrite(ROW_SRCLK, LOW);
digitalWrite(ROW_SRCLR, HIGH);
clearShiftReg(ROW_SRCLK, ROW_SRCLR);
// set column with rows' data
for (int y = 0; y < ROW_COUNT; y++) {
@ -190,24 +194,20 @@ void loop() {
bool gotLight = (pxValue >> (4 + brightnessPhase)) & 1;
digitalWrite(ROW_SER, gotLight);
// push value
digitalWrite(ROW_SRCLK, HIGH);
digitalWrite(ROW_SRCLK, LOW);
pulsePin(ROW_SRCLK);
}
// disable rows before latch
digitalWrite(ROW_OE, HIGH);
// latch column
digitalWrite(COL_RCLK, HIGH);
digitalWrite(COL_RCLK, LOW);
// latch rows
digitalWrite(ROW_RCLK, HIGH);
digitalWrite(ROW_RCLK, LOW);
outputEnable(ROW_OE, false);
// latch columns and rows
pulsePin(COL_RCLK);
pulsePin(ROW_RCLK);
// enable rows after latch
digitalWrite(ROW_OE, !brightPhase);
outputEnable(ROW_OE, brightPhase);
// show for a certain period
digitalWrite(ROW_OE, LOW);
outputEnable(ROW_OE, true);
delayMicroseconds(brightnessPhaseDelays[brightnessPhase]);
digitalWrite(ROW_OE, HIGH);
outputEnable(ROW_OE, false);
}
// next brightness phase