From 3f11c32ff107769ba065536cd740cf79f11484ac Mon Sep 17 00:00:00 2001 From: alanbjohnston Date: Thu, 5 Mar 2020 16:51:23 -0500 Subject: [PATCH] Delete i2c_master_register_read.ino --- arduino/i2c_master_register_read.ino | 55 ---------------------------- 1 file changed, 55 deletions(-) delete mode 100644 arduino/i2c_master_register_read.ino diff --git a/arduino/i2c_master_register_read.ino b/arduino/i2c_master_register_read.ino deleted file mode 100644 index a2a6f789..00000000 --- a/arduino/i2c_master_register_read.ino +++ /dev/null @@ -1,55 +0,0 @@ -// Wire Master Reader -// by Nicholas Zambetti - -// Demonstrates use of the Wire library -// Reads data from an I2C/TWI slave device -// Refer to the "Wire Slave Sender" example for use with this - -// Created 29 March 2006 - -// This example code is in the public domain. - -// modified by Alan Johnston to show reading registers 0 - 3 -// code based on https://forum.arduino.cc/index.php?topic=211587.0 -// -// This code is to simulate the Raspberry Pi acting as I2C bus master - -#include -#define I2C_ADDRESS 0x4B -#define REGISTER_0 0x00 -#define REGISTER_1 0x01 -#define REGISTER_2 0x02 -#define REGISTER_3 0x03 - -uint8_t reg; // I2C read register - -void setup() { - Wire.begin(); // join i2c bus (address optional for master) - Serial.begin(9600); // start serial for output - pinMode(LED_BUILTIN, OUTPUT); - Serial.println("Starting"); -} - -void loop() { - for (reg=0; reg < 4; reg++) { - delay(5000); - digitalWrite(LED_BUILTIN, HIGH); - Wire.beginTransmission(I2C_ADDRESS); - Wire.write(reg); - Wire.endTransmission(); - delay(100); - digitalWrite(LED_BUILTIN, LOW); - - - Wire.requestFrom(I2C_ADDRESS, 2); // request 2 bytes from I2C device - byte LSB = Wire.read(); - byte MSB = Wire.read(); - - uint16_t register_value = ((MSB << 8) | LSB); - - Serial.print("Read "); - Serial.print(register_value, HEX); // display register value in HEXADECIMAL - Serial.print(" from register "); - Serial.println(reg); - } -}