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Pixel by pixel scrolling

This commit is contained in:
Pedro de Oliveira 2017-03-22 00:10:08 +00:00
parent af1ad437ac
commit 3ae85de2d9
3 changed files with 567 additions and 498 deletions
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48
Inc/ssd1306.h
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@ -2,18 +2,6 @@
#include "stm32f4xx_hal.h"
#include "fonts.h"
// Deze library is door Olivier Van den Eede 2016 geschreven en aangepast voor gebruik met
// Stm32 microcontrollers en maakt gebruik van de HAL-i2c library's.
//
// Deze library is gemaakt om gebruik te kunnen maken van een ssd1306 gestuurd oled display.
// Voor het gebruik moeten zeker de onderstaande defines juist ingesteld worden.
// Zoals de gebruikte i2c poort en de groote van het scherm.
//
// De library maakt gebruik van 2 files (fonts.c/h) Hierin staan 3 fonts beschreven.
// Deze fonts kunnen zo gebruikt worden: - Font_7x10
// - Font_11x18
// - Font_16x26
#ifndef ssd1306
#define ssd1306
@ -26,6 +14,40 @@
// SSD1306 LCD height in pixels
#define SSD1306_HEIGHT 64
#define SSD1306_EXTERNALVCC 0x1
#define SSD1306_SWITCHCAPVCC 0x2
#define SSD1306_SETCONTRAST 0x81
#define SSD1306_DISPLAYALLON_RESUME 0xA4
#define SSD1306_DISPLAYALLON 0xA5
#define SSD1306_NORMALDISPLAY 0xA6
#define SSD1306_INVERTDISPLAY 0xA7
#define SSD1306_DISPLAYOFF 0xAE
#define SSD1306_DISPLAYON 0xAF
#define SSD1306_SETDISPLAYOFFSET 0xD3
#define SSD1306_SETCOMPINS 0xDA
#define SSD1306_SETVCOMDETECT 0xDB
#define SSD1306_SETDISPLAYCLOCKDIV 0xD5
#define SSD1306_SETPRECHARGE 0xD9
#define SSD1306_SETMULTIPLEX 0xA8
#define SSD1306_SETLOWCOLUMN 0x00
#define SSD1306_SETHIGHCOLUMN 0x10
#define SSD1306_SETSTARTLINE 0x40
#define SSD1306_MEMORYMODE 0x20
#define SSD1306_COLUMNADDR 0x21
#define SSD1306_PAGEADDR 0x22
#define SSD1306_COMSCANINC 0xC0
#define SSD1306_COMSCANDEC 0xC8
#define SSD1306_SEGREMAP 0xA0
#define SSD1306_CHARGEPUMP 0x8D
// Scrolling #defines
#define SSD1306_ACTIVATE_SCROLL 0x2F
#define SSD1306_DEACTIVATE_SCROLL 0x2E
#define SSD1306_SET_VERTICAL_SCROLL_AREA 0xA3
#define SSD1306_RIGHT_HORIZONTAL_SCROLL 0x26
#define SSD1306_LEFT_HORIZONTAL_SCROLL 0x27
#define SSD1306_VERTICAL_AND_RIGHT_HORIZONTAL_SCROLL 0x29
#define SSD1306_VERTICAL_AND_LEFT_HORIZONTAL_SCROLL 0x2A
//
// Enum voor de kleuren van het scherm Black en White
@ -60,5 +82,7 @@ char ssd1306_WriteString(char* str, FontDef Font, SSD1306_COLOR color);
void ssd1306_SetCursor(uint8_t x, uint8_t y);
void ssd1306_WriteCommand(uint8_t command);
void ssd1306_Scroll(void);
void startscrollright(uint8_t start, uint8_t stop);
#endif

42
Src/main.c
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@ -32,20 +32,19 @@
*/
/* Includes ------------------------------------------------------------------*/
#include <string.h>
#include <stdlib.h>
#include "main.h"
#include "stm32f4xx_hal.h"
/* USER CODE BEGIN Includes */
#include "ssd1306.h"
#include "fonts.h"
//#include "dht22.h"
/* USER CODE END Includes */
/* Private variables ---------------------------------------------------------*/
I2C_HandleTypeDef hi2c1;
UART_HandleTypeDef huart1;
/* USER CODE BEGIN PV */
@ -53,7 +52,7 @@ UART_HandleTypeDef huart1;
char UART1_Data;
char UART_Buffer[32];
char text[32];
unsigned char i = 0;
int i;
/* USER CODE END PV */
@ -95,6 +94,13 @@ int main(void)
ssd1306_Init();
//DHT22_Init();
HAL_UART_Receive_IT(&huart1, (uint8_t*) &UART1_Data, 1);
/*
for(int y = 0; y < 129; y++) {
ssd1306_DrawPixel(y, 20, White);
}
*/
//ssd1306_UpdateScreen();
/* USER CODE END 2 */
/* Infinite loop */
@ -104,23 +110,29 @@ int main(void)
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_6); //Toggle the state of pin PC9
//HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_7); //Toggle the state of pin PC9
int x, msg;
//HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_6); //Toggle the state of pin PC9
//DHT22_Read(htim6);
ssd1306_SetCursor(0, 53);
ssd1306_WriteString(text, Font_7x10, White);
ssd1306_UpdateScreen();
for(int i = 0; i < 64; i++) {
ssd1306_WriteCommand(0x40 | i);
//startscrollright(0x00, 0x0F);
for(int times = 0; times < 12; times++) {
ssd1306_Scroll();
ssd1306_UpdateScreen();
HAL_Delay(30);
HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_7); //Toggle the state of pin PC9
}
//HAL_Delay(250);
x = rand() % 60 + 1;
msg = rand() % 2 + 1;
ssd1306_SetCursor(x, 53);
ssd1306_WriteString((msg == 1) ? "GORDOS" : "LOL", Font_7x10, White);
ssd1306_Fill(Black);
/*
for(int y = 0; y < 129; y++) {
ssd1306_DrawPixel(y, 63, White);
}
*/
ssd1306_UpdateScreen();
}
/* USER CODE END 3 */
@ -203,7 +215,7 @@ static void MX_USART1_UART_Init(void)
{
huart1.Instance = USART1;
huart1.Init.BaudRate = 9600;
huart1.Init.BaudRate = 115200;
huart1.Init.WordLength = UART_WORDLENGTH_8B;
huart1.Init.StopBits = UART_STOPBITS_1;
huart1.Init.Parity = UART_PARITY_NONE;

91
Src/ssd1306.c
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@ -1,11 +1,38 @@
#include"ssd1306.h"
// Databuffer voor het scherm
static uint8_t SSD1306_Buffer[SSD1306_WIDTH * SSD1306_HEIGHT / 8];
//static uint8_t SSD1306_Buffer[SSD1306_WIDTH * SSD1306_HEIGHT / 8];
static uint8_t SSD1306_Buffer[SSD1306_HEIGHT * SSD1306_WIDTH / 8];
// Een scherm-object om lokaal in te werken
static SSD1306_t SSD1306;
void startscrollright(uint8_t start, uint8_t stop){
ssd1306_WriteCommand(SSD1306_RIGHT_HORIZONTAL_SCROLL);
ssd1306_WriteCommand(0X00);
ssd1306_WriteCommand(start);
ssd1306_WriteCommand(0X00);
ssd1306_WriteCommand(stop);
ssd1306_WriteCommand(0X00);
ssd1306_WriteCommand(0XFF);
ssd1306_WriteCommand(SSD1306_ACTIVATE_SCROLL);
}
void ssd1306_Scroll()
{
static uint32_t end = SSD1306_WIDTH * 8;
uint8_t bit_antigo = 0;
for(uint32_t addr = 0; addr < end; addr++) {
if (addr > 0x79) {
bit_antigo = SSD1306_Buffer[addr] & 0x01;
}
SSD1306_Buffer[addr] >>= 1;
bit_antigo <<= 7;
SSD1306_Buffer[addr - SSD1306_WIDTH] |= bit_antigo;
}
}
//
// Een byte sturen naar het commando register
@ -25,35 +52,41 @@ uint8_t ssd1306_Init(void)
// Even wachten zodat het scherm zeker opgestart is
HAL_Delay(100);
/* Init LCD */
ssd1306_WriteCommand(0xAE); //display off
ssd1306_WriteCommand(0x20); //Set Memory Addressing Mode
ssd1306_WriteCommand(0x10); //00,Horizontal Addressing Mode;01,Vertical Addressing Mode;10,Page Addressing Mode (RESET);11,Invalid
ssd1306_WriteCommand(0xB0); //Set Page Start Address for Page Addressing Mode,0-7
ssd1306_WriteCommand(0xC8); //Set COM Output Scan Direction
ssd1306_WriteCommand(0x00); //---set low column address
ssd1306_WriteCommand(0x10); //---set high column address
ssd1306_WriteCommand(0x40); //--set start line address
ssd1306_WriteCommand(0x81); //--set contrast control register
ssd1306_WriteCommand(0xFF);
ssd1306_WriteCommand(0xA1); //--set segment re-map 0 to 127
ssd1306_WriteCommand(0xA6); //--set normal display
ssd1306_WriteCommand(0xA8); //--set multiplex ratio(1 to 64)
ssd1306_WriteCommand(0x3F); //
ssd1306_WriteCommand(0xA4); //0xa4,Output follows RAM content;0xa5,Output ignores RAM content
ssd1306_WriteCommand(0xD3); //-set display offset
ssd1306_WriteCommand(0x00); //-not offset
ssd1306_WriteCommand(0xD5); //--set display clock divide ratio/oscillator frequency
ssd1306_WriteCommand(0xF0); //--set divide ratio
ssd1306_WriteCommand(0xD9); //--set pre-charge period
ssd1306_WriteCommand(0x22); //
ssd1306_WriteCommand(0xDA); //--set com pins hardware configuration
ssd1306_WriteCommand(SSD1306_DISPLAYOFF); // 0xAE
ssd1306_WriteCommand(SSD1306_SETDISPLAYCLOCKDIV); // 0xD5
ssd1306_WriteCommand(0x80); // the suggested ratio 0x80
ssd1306_WriteCommand(SSD1306_SETMULTIPLEX); // 0xA8
ssd1306_WriteCommand(SSD1306_HEIGHT - 1);
ssd1306_WriteCommand(SSD1306_SETDISPLAYOFFSET); // 0xD3
ssd1306_WriteCommand(0x0); // no offset
ssd1306_WriteCommand(SSD1306_SETSTARTLINE | 0x0); // line #0
ssd1306_WriteCommand(SSD1306_CHARGEPUMP); // 0x8D
ssd1306_WriteCommand(0x14);
ssd1306_WriteCommand(SSD1306_MEMORYMODE); // 0x20
ssd1306_WriteCommand(0x00); // 0x0 act like ks0108
ssd1306_WriteCommand(SSD1306_SEGREMAP | 0x1);
ssd1306_WriteCommand(SSD1306_COMSCANDEC);
ssd1306_WriteCommand(SSD1306_SETCOMPINS); // 0xDA
ssd1306_WriteCommand(0x12);
ssd1306_WriteCommand(0xDB); //--set vcomh
ssd1306_WriteCommand(0x20); //0x20,0.77xVcc
ssd1306_WriteCommand(0x8D); //--set DC-DC enable
ssd1306_WriteCommand(0x14); //
ssd1306_WriteCommand(0xAF); //--turn on SSD1306 panel
ssd1306_WriteCommand(SSD1306_SETCONTRAST); // 0x81
ssd1306_WriteCommand(0xCF);
ssd1306_WriteCommand(SSD1306_SETPRECHARGE);
ssd1306_WriteCommand(0xF1);
ssd1306_WriteCommand(SSD1306_SETVCOMDETECT); // 0xDB
ssd1306_WriteCommand(0x40);
ssd1306_WriteCommand(SSD1306_DISPLAYALLON_RESUME); // 0xA4
ssd1306_WriteCommand(SSD1306_NORMALDISPLAY); // 0xA6
ssd1306_WriteCommand(SSD1306_DEACTIVATE_SCROLL);
ssd1306_WriteCommand(SSD1306_DISPLAYON);//--turn on oled panel
/* Clearen scherm */
ssd1306_Fill(Black);