Classwork

Classwork

Skeleton code

Remember to add the function prototypes in main.c for the declaration of the functions, as follow:

/* main.c */
/* USER CODE BEGIN PFP */
void gpio_classwork(void);
void tft_classwork(void);
/* USER CODE END PFP */

Task 1 :GPIO

• When BTN1 is held, LED1 should be on. (@1)

• When BTN2 is held, LED2 should be flashing (toggle in 50ms).(@1)

• When both BTN1 and BTN2 are held, the following sequence is conducted:(@2)

  • LED1 and LED3 are on while LED2 are flashing.

  • After 1 second, LED1 and LED3 are flashing while LED2 are on.

  • After 1 second, repeat from step 1.

• Keyword: Finite State Machine

• LED1 RED

• LED2 GREEN

• LED3 BLUE

• BTN1 RED one

• BTN2 GREEN one

• Order: BTN2 -> BTN1 -> BTN1 & BTN2

Task 2 :TFT

• Print the time elapsed with the format of mm:ss:sssZ where sssZ means millisecond. e.g. 00:23:109 (@2)

• Print a 50px * 50px square directly under the elapsed time where its color changes when 1 second passed.(@2)

• Keywords: HAL_GetTick

• Hints:

  • $1234 \mod 10 = 4$
  • Integer division

    • $\frac{1234}{10} = 123$
  • 1 min = 60 second, 1 second = 1000 milliseconds

  • Read the function prototypes in Core/Inc/lcd/lcd.h for more tft_print functions that you can use.

• 

  • The actual size of square printed on TFT should be larger than this one

⚠️ Don't use__forceinline static void fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color) as it seems to cause error