Bus Pirate Edu Kit Exercise no.12

From DP

Contents 1 Overview 2 The Circuit 2.1 Breadboard legend 3 Bus Pirate Terminal 4 Not Working? 5 Taking it further

Overview

The Circuit

Breadboard legend

IC Location

Breadboard wiring legend

IC PIN1 (+) PIN2 (-) 74HCT595 E8 E9 Potentiometer J22 J23

Signal name Contact1 Contact2 5V BP_5V BB_+_left 5V BB_+_left BB_+_right 5V BB_+_left LCD pin2 5V BB_+_right J8 5V BB_+_right J14 5V BB_+_right G22 GND BP_GND BB_-_left GND BB_-_left BB_-_right GND BB_-_left A15 GND BB_-_left LCD pin1 GND BB_-_right J11 GND BB_-_right G24 Data Input BP_MOSI I10 Data Clock BP_CLK I13 ~CS BP_CS I12 Contrast G23 LCD pin3 RS C8 LCD pin4 RW C9 LCD pin5 EN C10 LCD pin6 D4 C11 LCD pin11 D5 C12 LCD pin12 D6 C13 LCD pin13 D7 C14 LCD pin14

• The (+) and (-) next to PIN1 and PIN2 are intended for devices such as LEDs, where PIN1 should be the anode and connected to a higher potential then PIN2.

Bus Pirate Terminal

HiZ>m<<<the menu command
1. HiZ
2. 1-WIRE
3. UART
4. I2C
5. SPI
6. 2WIRE
7. 3WIRE
8. LCD
x. exit(without change)

(1)>8<<<select the LCD mode
This mode requires an adapter
Ready
LCD>W<<<turn on the power supplies
POWER SUPPLIES ON

We start the exercise by entering the menu command 'm', and selecting the menu option LCD (8), which enters the Bus Pirate into the LCD mode. This mode is intended for the Bus Pirate LCD adapter v3 board. Since this exercise emulates the LCD adapter board, the mode is perfect for it.

LCD>(2)<<<send the LCD initialization macro
RESET
Display lines:
1. 1
2. Multiple

(2)>2<<<select multiple lines
INIT

Next we need to initialize the LCD, by entering the LCD init macro '(2)', and selecting multiple lines, since the LCD in the exercise has two lines of 16 characters.

LCD>"Bus Pirate"<<<write "Bus Pirate" in the first line
WRITE: "Bus Pirate"

Once initialized the LCD is ready to display the text we send to it. To send text to the display you simply enter a sting you want displayed between quotation marks (""). Make sure the text is not longer then 16 characters, as every character over 16 will no be shown.

LCD>(4)0x40<<<move the cursor to the beginning of the next line
CURSOR SET

If you want to write in the next line, you need to move the cursor to the 2nd line beginning, which on our LCD is addressed as 0x40 (0x0 is the beginning of the first line). To do this we use the 'move cursor macro (4)' followed by the position address (0x40).

LCD>"Edu Kit"<<<write "Edu Kit" in the next line
WRITE: "Edu Kit"

Once the cursor is positioned at the beginning of the next line, simply type in the 16 character text you want show there, again between the quotation marks("").

LCD>m<<<the menu command
1. HiZ
2. 1-WIRE
3. UART
4. I2C
5. SPI
6. 2WIRE
7. 3WIRE
8. LCD
x. exit(without change)

(1)>1<<<select the HiZ mode
Ready
HiZ>

Once you're done with this exercise simply enter the menu command 'm' and select the HiZ mode ('1') to shut down the Bus Pirate.

Not Working?

Taking it further