void I2C_Init() SSPCON = 0b00101000; // Enable I2C Master mode SSPADD = (_XTAL_FREQ/(4*100000))-1; // Set clock to 100kHz SSPSTAT = 0; TRISCbits.TRISC3 = 1; // Set SCL as input TRISCbits.TRISC4 = 1; // Set SDA as input
The DVCADDR=$7C property is particularly significant. Many Arduino users expect I2C LCDs to respond to address 0x27 (the most common address for PCF8574-based modules) or 0x3F (for PCF8574A variants). The Proteus JHD-2X16-I2C, however, defaults to , and mismatches in addressing are the single most common reason for simulation failures. jhd2x16i2c proteus exclusive
Connect the control pins (RS, RW, E) to the PCF8574 (P0, P1, P2). void I2C_Init() SSPCON = 0b00101000; // Enable I2C
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Connect the control pins (RS, RW, E) to
This is overwhelmingly the most common issue. Users write code for a physical I2C LCD module at address 0x27, load it into Proteus, and nothing appears on the simulated display.
The simulation relies on the Arduino IDE generating an .ELF or .HEX file, which is then loaded into the simulated microcontroller in Proteus.