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EXPERIMENT: simple lcd test

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This commit is contained in:
Robin Dietzel 2022-12-09 15:47:21 +01:00
parent a0110696ae
commit 0c0f7a5be0
1 changed files with 463 additions and 446 deletions
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33
Core/Src/main.c → Core/Src/main.cpp
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@ -19,6 +19,7 @@
/* Includes ------------------------------------------------------------------*/ /* Includes ------------------------------------------------------------------*/
#include "main.h" #include "main.h"
#include "usb_device.h" #include "usb_device.h"
#include "LCD_I2C_Driver.h"
#define SLAVE_ADDRESS_LCD 0x4e #define SLAVE_ADDRESS_LCD 0x4e
@ -93,20 +94,21 @@ void lcd_send_data (char data)
void lcd_init (void) void lcd_init (void)
{ {
// 4 bit initialisation // Initialization by Instruction (from HD44780U Datasheet)
HAL_Delay(50); // wait for >40ms HAL_Delay(50); // wait for >40ms
lcd_send_cmd (0x30); lcd_send_cmd (0x30);
HAL_Delay(5); // wait for >4.1ms HAL_Delay(5); // wait for >4.1ms
lcd_send_cmd (0x30); lcd_send_cmd (0x30);
HAL_Delay(1); // wait for >100us HAL_Delay(1); // wait for >100us
lcd_send_cmd (0x30); lcd_send_cmd (0x30);
HAL_Delay(10); HAL_Delay(10); // Wait for command execution lengt
lcd_send_cmd (0x20); // 4bit mode
lcd_send_cmd (0x20); // Set Interface to 4-bit mode
HAL_Delay(10); HAL_Delay(10);
// dislay initialisation
lcd_send_cmd (0x28); // Function set --> DL=0 (4 bit mode), N = 1 (2 line display) F = 0 (5x8 characters) lcd_send_cmd (0x28); // Function set --> DL=0 (4 bit mode), N = 1 (2 line display) F = 0 (5x8 characters)
HAL_Delay(1); HAL_Delay(1);
lcd_send_cmd (0x08); //Display on/off control --> D=0,C=0, B=0 ---> display off lcd_send_cmd (0x08); //Display on/off control --> D=0,C=0, B=0 ---> display off
HAL_Delay(1); HAL_Delay(1);
lcd_send_cmd (0x01); // clear display lcd_send_cmd (0x01); // clear display
@ -156,10 +158,25 @@ int main(void)
MX_ADC1_Init(); MX_ADC1_Init();
MX_I2C1_Init(); MX_I2C1_Init();
/* USER CODE BEGIN 2 */ /* USER CODE BEGIN 2 */
char buf [] = "SensorTest"; char buf [] = "Hallo THM";
//CDC_Transmit_FS(buf, sizeof(buf)); //CDC_Transmit_FS(buf, sizeof(buf));
lcd_init(); floatpump::LCD_I2C_Driver display(hi2c1, SLAVE_ADDRESS_LCD);
display.LCDInitialize();
display.LCDSetBacklight(true);
display.LCDSendCString(buf);
HAL_Delay(1000);
display.LCDPower(false);
HAL_Delay(1000);
display.LCDPower(true);
HAL_Delay(1000);
display.LCDCursor(true);
display.LCDCursorBlink(true);
HAL_Delay(1000);
display.LCDSetCursor(18, 3);
display.LCDSendCString("XX");
/* USER CODE END 2 */ /* USER CODE END 2 */
/* Infinite loop */ /* Infinite loop */
@ -170,6 +187,7 @@ int main(void)
/* USER CODE BEGIN 3 */ /* USER CODE BEGIN 3 */
HAL_ADC_Start(&hadc1); HAL_ADC_Start(&hadc1);
HAL_ADC_PollForConversion(&hadc1, 1); HAL_ADC_PollForConversion(&hadc1, 1);
value = HAL_ADC_GetValue(&hadc1); value = HAL_ADC_GetValue(&hadc1);
@ -177,8 +195,7 @@ int main(void)
char buf [250] = ""; char buf [250] = "";
sprintf(buf, "Value: %d \r\n", value); sprintf(buf, "Value: %d \r\n", value);
//CDC_Transmit_FS(buf, sizeof(buf)); //CDC_Transmit_FS(buf, sizeof(buf));
lcd_send_cmd (0x80|0x00); //display.LCDSendCString(buf);
lcd_send_string(buf);
HAL_Delay(1000); HAL_Delay(1000);
HAL_GPIO_TogglePin(GPIOC, GPIO_PIN_13); HAL_GPIO_TogglePin(GPIOC, GPIO_PIN_13);