16x2 LCD Interfacing with STM32,STM32F103C6
lcd_init();
LCD_LINE1;
lcd_String(" GeElectron");
LCD_LINE2;
lcd_String(" Welcome");
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
HAL_GPIO_WritePin(GPIOC,GPIO_PIN_13, GPIO_PIN_SET);// LCD Enable PIN to High
HAL_Delay(500);
HAL_GPIO_WritePin(GPIOC,GPIO_PIN_13, RESET);
HAL_Delay(500);
// lcd_String("Hello");
}
/* USER CODE END 3 */
}
/* * lcd.c * * Created on: Sep 30, 2023 * Author: Geelabs */ #include "stm32f1xx_hal.h" #include "lcd.h" #include "main.h" extern void Delay_Us (uint16_t us); void lcd_Strobe(void) { HAL_GPIO_WritePin(GPIOB,GPIO_PIN_11, GPIO_PIN_SET);// LCD Enable PIN to High HAL_Delay(1); HAL_GPIO_WritePin(GPIOB,GPIO_PIN_11, RESET);// LCD Enable High to Low HAL_Delay(1); } void lcd_init(void) { HAL_Delay(40); lcd_cmd(0x03); HAL_Delay(5); lcd_cmd(0x03); HAL_Delay(1); lcd_cmd(0x03); HAL_Delay(10); lcd_cmd(0x02); // Function set --> DL=0 (4 bit mode), N = 1 (2 line display) F = 0 (5x8 characters) HAL_Delay(1); lcd_cmd(0x28); lcd_cmd(0x08); HAL_Delay(10); lcd_cmd(0x00); lcd_cmd(0x01); HAL_Delay(3); lcd_cmd(0x00); lcd_cmd(0x0c); // Make cursorinvisible lcd_Clear(); // Clear screen lcd_cmd(0x6); // Set entry Mode(auto increment of cursor) } void lcd_cmd(__uint16_t cmd) { HAL_GPIO_WritePin(GPIOB,GPIO_PIN_10, GPIO_PIN_RESET); cmd = (cmd << 8) ; GPIOB->ODR = (cmd & 0xf000); lcd_Strobe(); cmd = (cmd << 4) ; GPIOB->ODR = (cmd & 0xf000); lcd_Strobe(); } void lcd_data(__uint16_t lcd_data) { HAL_GPIO_WritePin(GPIOB,GPIO_PIN_10, GPIO_PIN_SET); lcd_data = (lcd_data << 8) ; GPIOB->ODR = (lcd_data& 0xf000)|0x400; lcd_Strobe(); lcd_data = (lcd_data << 4) ; GPIOB->ODR = (lcd_data & 0xf000)|0x400; lcd_Strobe(); } void lcd_Clear(void) { lcd_cmd(0x01); HAL_Delay(5); } void lcd_String(const char *ptr) // ptr pointing the address of displaying string { while (*ptr) // check weather the endo of file then exit the loop { lcd_data(*ptr++); // Sending data to LCD_data functions } }