A library to supply functions or a class about i2c for Arduino.
See read and write example.
Include
#include <wire_asukiaaa.h>Valus for read and write example
#define TARGET_DEVICE_ADDRESS 0x08
#define TARGET_WRITE_REGISTER_ADDRESS 0x00
#define TARGET_READ_REGISTER_ADDRESS 0x03Write bytes.
uint8_t dataToWrite[] = {0, 1, 2};
uint8_t writeLen = 3;
int writeResult = wire_asukiaaa::writeBytes(&Wire, TARGET_DEVICE_ADDRESS, TARGET_WRITE_REGISTER_ADDRESS, dataToWrite, writeLen);
if (writeResult != 0) {
Serial.println("Failed to write because of error" + String(writeResult));
} else {
Serial.println("Succeeded writing");
}Read bytes
uint8_t readLen = 3;
uint8_t dataThatRead[readLen];
int readResult = wire_asukiaaa::readBytes(&Wire, TARGET_DEVICE_ADDRESS, TARGET_READ_REGISTER_ADDRESS, dataThatRead, readLen);
if (readResult != 0) {
Serial.println("Failed to read because of error" + String(readResult));
} else {
Serial.println("Succeeded reading");
Serial.print("Received:");
for (int i = 0; i < readLen; ++i) {
Serial.print(" ");
Serial.print(dataThatRead[i]);
}
Serial.println("");
}See pheripheral example. The peripheral example can comunicate with central example.
#define BUFF_LEN 10
wire_asukiaaa::PeripheralHandler wirePeri(&Wire, BUFF_LEN);
unsigned long handledReceivedAt = 0;
void setup() {
Wire.onReceive([](int v) { wirePeri.onReceive(v); });
Wire.onRequest([]() { wirePeri.onRequest(); });
Wire.begin(DEVICE_ADDRESS);
}
void loop() {
if (wirePeri.receivedAt != handledReceivedAt) {
handledReceivedAt = wirePeri.receivedAt;
// Do something for wirePeri.buffLen;
}
}It can prohibit writing for register by index.
#define BUFF_LEN 10
bool prohibitWriting(int index) {
// Example: Prohibit writing for last register
return index == BUFF_LEN - 1;
}
wire_asukiaaa::PeripheralHandler wirePeri(&Wire, BUFF_LEN, prohibitWriting);MIT