rosmianto

  #if 1
  uint8_t status[128] = {};

  for (int i = 1; i < 128; i++) {
    HAL_StatusTypeDef ret = HAL_I2C_IsDeviceReady(&hi2c1, (uint16_t)(i<<1), 3, 5);
    if (ret != HAL_OK) /* No ACK Received At That Address */
    {
      status[i] = 0;
    }
    else if(ret == HAL_OK)

rosmianto

Serial.println("List dir");
File root = SD.open("/");
File file = root.openNextFile();
while (file) {
	Serial.print("FILE: ");
	Serial.println(file.name());
	file = root.openNextFile();
}

Serial.println("opening...");

rosmianto

/*
    IoT.ino -- Example code for demonstration only.
    Written by Rosmianto A. Saputro. Aug 25, 2017.

    To do list:
    * Implement OTA
    * Implement Server/client code.
    * Implement EEPROM update code.
*/

rosmianto

void setup() {
  byte example[] = {0x31, 0x32, 0x33, 0x34};
  int length = 4;

  String result = "";
  String hexstring = "";

  for(int i = 0; i < length; i++) {
    if(example[i] < 0x10) {
      hexstring += '0';

rosmianto

void setup() {
  // put your setup code here, to run once:
  TCNT1 = 0;
  TCCR1B = B00001001;
  TCCR1A = B01000000;
  OCR1A = 1; // CLK frequency = 4 MHz
  pinMode(9, OUTPUT);
}

void loop() {