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| #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
/ list_sdcard.ino
Created
February 23, 2020 06:59
How to List SD Card directory content Arduino Platform
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| 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
/ resettable_eeprom.ino
Created
February 23, 2020 06:57
Implementation of Resettable EEPROM config using external button Arduino Platform
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| /* | |
| 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
/ convert_byte_array.ino
Created
February 23, 2020 06:56
How to Convert Byte Array to Hexstring Arduino Platform
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| 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
/ 4mhz_clock.ino
Created
February 23, 2020 06:54
How to Generate 4MHz clock with Arduino Uno
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| 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() { |