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| en:iot-open:practical:hardware:sut:stm32:emb5_1 [2024/04/10 19:44] – [Prerequisites] ktokarz | en:iot-open:practical:hardware:sut:stm32:emb5_1 [2024/04/10 20:20] (current) – [Steps] ktokarz | ||
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| Line 5: | Line 5: | ||
| ===== Prerequisites ===== | ===== Prerequisites ===== | ||
| - | Familiarise yourself with a hardware reference. LCD of this type can be connected to the microcontroller with 8 or 4 lines of data, RS - register select, R/#W - read/write, and EN - synchronisation line. In our lab equipment, the LCD is controlled with 6 GPIOs. We use 4 lines for data and because We don't read anything from the LCD the R/#W is connected to the ground. | + | Familiarise yourself with a hardware reference. LCD of this type can be connected to the microcontroller with 8 or 4 lines of data, RS - register select, R/#W - read/write, and EN - synchronisation line. In our lab equipment, the LCD is controlled with 6 GPIOs. We use 4 lines for data and because We don't read anything from the LCD the R/#W is connected to the ground. Details can be found in //Table 1: STM32WB55 Node Hardware Details// on the STM32 laboratory hardware reference page. |
| You are going to use a library to handle the LCD. It means you need to add it to your '' | You are going to use a library to handle the LCD. It means you need to add it to your '' | ||
| <code bash> | <code bash> | ||
| - | lib_deps = adafruit/Adafruit | + | lib_deps = arduino-libraries/ |
| </ | </ | ||
| ===== Suggested Readings and Knowledge Resources ===== | ===== Suggested Readings and Knowledge Resources ===== | ||
| * [[en: | * [[en: | ||
| - | * [[en: | + | * [[en: |
| * [[en: | * [[en: | ||
| - | * [[en: | + | * [[en: |
| ===== Hands-on Lab Scenario ===== | ===== Hands-on Lab Scenario ===== | ||
| Line 30: | Line 30: | ||
| Include the library in your source code: | Include the library in your source code: | ||
| <code c> | <code c> | ||
| - | #include <Adafruit_LiquidCrystal.h> | + | #include <LiquidCrystal.h> |
| </ | </ | ||
| Line 36: | Line 36: | ||
| Declare GPIOs controlling the LCD, according to the hardware reference: | Declare GPIOs controlling the LCD, according to the hardware reference: | ||
| <code c> | <code c> | ||
| - | #define LCD_RS 2 | + | const int rs = PC5, en = PB11, d4 = PB12, d5 = PB13, d6 = PB14, d7 = PB15; |
| - | #define LCD_ENABLE 1 | + | |
| - | #define LCD_D4 39 | + | |
| - | #define LCD_D5 40 | + | |
| - | #define LCD_D6 41 | + | |
| - | #define LCD_D7 42 | + | |
| </ | </ | ||
| === Step 3 === | === Step 3 === | ||
| - | Declare | + | Declare |
| <code c> | <code c> | ||
| - | static Adafruit_LiquidCrystal | + | LiquidCrystal |
| </ | </ | ||
| Line 53: | Line 48: | ||
| Initialise class with display area configuration (number of columns, here 16 and rows, here 2): | Initialise class with display area configuration (number of columns, here 16 and rows, here 2): | ||
| <code c> | <code c> | ||
| - | lcd.begin(16, | + | lcd.begin(16, |
| </ | </ | ||
| Line 61: | Line 56: | ||
| * '' | * '' | ||
| * '' | * '' | ||
| + | |||
| + | A simple example can be the Hello World: | ||
| + | <code c> | ||
| + | lcd.print(" | ||
| + | </ | ||
| ==== Result validation ==== | ==== Result validation ==== | ||
