StuffAndyMakes

/*
 *  Testing little dashboard steppers with a TMC2208 stepper driver (all from Amazon)
 *  Stepper: https://a.co/d/4dKBO58
 *  Driver:  https://a.co/d/bby0QgZ
 *
 *  Tested on an Arduino UNO clone.
 *
 *  Code will run the stepper to the maximum clockwise, then back to the 0 stop.
 *  It will then pick random steps to jump to (clockwise or counterclockwise)
 *  and do that indefinitely.

StuffAndyMakes

#include <Arduino.h>

#define PIN_LED_A 13
#define PIN_LED_B 12
#define PIN_LED_C 11

#define LED_A_STATE_SWITCH_INTERVAL 500  // milliseconds between LED state change
#define LED_B_STATE_SWITCH_INTERVAL 300  // milliseconds between LED state change
#define LED_C_STATE_SWITCH_INTERVAL 200  // milliseconds between LED state change

StuffAndyMakes

#include <Arduino.h>

#define PIN_LED_A 13
#define PIN_LED_B 12

#define LED_A_STATE_SWITCH_INTERVAL 500  // milliseconds between LED state change
#define LED_B_STATE_SWITCH_INTERVAL 750  // milliseconds between LED state change

unsigned long ledANextStateFlip = 0, ledBNextStateFlip = 0;
uint8_t ledAIsOn = LOW, ledBIsOn = LOW;

StuffAndyMakes

#include <Arduino.h>

#define PIN_LED 13
#define LED_STATE_SWITCH_INTERVAL 500  // milliseconds between LED state change

unsigned long ledNextStateFlip = 0;
bool ledIsOn = false;

void setup(void) {
    pinMode(PIN_LED, OUTPUT);

StuffAndyMakes

#include <Arduino.h>

#define PIN_LED 13
#define LED_STATE_SWITCH_INTERVAL 500  // milliseconds between LED state change

void setup(void) {
    pinMode(PIN_LED, OUTPUT);
    digitalWrite(PIN_LED, LOW);
}

StuffAndyMakes

#include "Arduino.h"

#define data 8
#define clk 9
#define oe 7
#define rst 6

void pulseClock() {
    digitalWrite(clk, HIGH);
    digitalWrite(clk, LOW);

StuffAndyMakes

#include "mbed.h"


DigitalOut data(PTB9);
DigitalOut clk(PTB8);
DigitalOut oe(PTB10);
DigitalOut rst(PTB11);

Serial out(PTA2, PTA1);

StuffAndyMakes

// CRC-8 - based on the CRC8 formulas by Dallas/Maxim
// code released under the therms of the GNU GPL 3.0 license
// Found at: http://www.leonardomiliani.com/en/2013/un-semplice-crc8-per-arduino/
uint8_t SerialPacket::_crc8(const uint8_t *data, uint8_t len) {
    uint8_t crc = 0x00;
    while (len--) {
        uint8_t extract = *data++;
        for (uint8_t tempI = 8; tempI; tempI--) {
            uint8_t sum = (crc ^ extract) & 0x01;
            crc >>= 1;

StuffAndyMakes

// found at https://learn.adafruit.com/memories-of-an-arduino/measuring-free-memory
int freeRam () {
    extern int __heap_start, *__brkval;
    int v;
    return (int) &v - (__brkval == 0 ? (int) &__heap_start : (int) __brkval);
}

StuffAndyMakes

typedef struct {
    uint8_t device;
    uint8_t command;
    uint32_t value;
    uint64_t serial;
    uint8_t ack;
} Command;

void SenderApplication::didReceiveGoodPacket(SerialPacket *p) {
  Serial.println("Got good packet!");