![]() ![]() ![]() The process of controlling the display involves putting the data that form the image of what you want to display into the data registers, then putting instructions in the instruction register. There's also a display constrast pin (Vo), power supply pins (+5V and Gnd) and LED Backlight (Bklt+ and BKlt-) pins that you can use to power the LCD, control the display contrast, and turn on and off the LED backlight, respectively. In that article and in the manual for this Basic compiler, a circuit from Sample Electronicsis described as one of the simplest ways to program the microcontroller. The states of these pins (high or low) are the bits that you're writing to a register when you write, or the values you're reading when you read. In January 2003, we published an article about programming AVR microcontrollers using Bascom AVR. A Read/Write (R/W) pin that selects reading mode or writing mode An Enable pin that enables writing to the registers 8 data pins (D0 -D7). You can select either the data register, which holds what goes on the screen, or an instruction register, which is where the LCD's controller looks for instructions on what to do next. The interface consists of the following pins: A register select (RS) pin that controls where in the LCD's memory you're writing data to. Output of the sketch on a 2x16 LCD The LCDs have a parallel interface, meaning that the microcontroller has to manipulate several interface pins at once to control the display.
0 Comments
Leave a Reply. |