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Draw line horizontal from x1 to x2

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Marián 2022-12-06 08:49:05 +01:00 committed by GitHub
parent 85cb65f165
commit 8580ddc78c
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1 changed files with 33 additions and 43 deletions
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lib/ssd1306.c
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@ -7,7 +7,7 @@
*
* @author Marian Hrinko
* @datum 06.10.2020
* @update 24.11.2022
* @update 06.12.2022
* @file ssd1306.c
* @version 3.0
* @tested AVR Atmega328p
@ -20,7 +20,7 @@
* --------------------------------------------------------------------------------------+
* @usage Basic Setup for OLED Display
*/
// @includes
#include "ssd1306.h"
// +---------------------------+
@ -597,22 +597,32 @@ uint8_t SSD1306_DrawPixel (uint8_t x, uint8_t y)
uint8_t SSD1306_DrawLineHorz (uint8_t y, uint8_t x1, uint8_t x2)
{
uint8_t status = INIT_STATUS; // TWI init status 0xFF
uint8_t i = 0; // counter
uint8_t j = 0; // counter
uint8_t i = 0; // counter for y dim
uint8_t j = 0; // counter for x dim
uint8_t page = y >> 3; // page
uint8_t pixel = 1 << (y - (page << 3)); // pixel
uint8_t pixel = 1 << (y - (page << 3)); // which pixel
uint8_t ram[RAM_Y_END][RAM_X_END]; // buffer [3/7 x 127]
uint8_t ram[RAM_Y_END][RAM_X_END];
while (i < RAM_Y_END) {
if (i == page) {
memset (ram[i], pixel, RAM_X_END);
} else {
memset (ram[i], 0x00, RAM_X_END);
// fill RAM buffer
// -------------------------------------------------------------------------------------
while (i < RAM_Y_END)
{
if (i == page) { // for correspond page
//memset (ram[i], pixel, RAM_X_END); // draw line
while (j < x1) { //
ram[i][j++] = CLEAR_COLOR; // clear to x1
}
while (j < x2) { //
ram[i][j++] = pixel; // set pixels to x2
}
while (j < RAM_X_END) { //
ram[i][j++] = CLEAR_COLOR; // clear to x end
}
} else { //
memset (ram[i], CLEAR_COLOR, RAM_X_END); // clear whole page
}
i++;
i++; // next page
}
// TWI start & SLAW
// -------------------------------------------------------------------------------------
status = SSD1306_Send_StartAndSLAW (SSD1306_ADDR); // start & SLAW
@ -626,16 +636,15 @@ uint8_t SSD1306_DrawLineHorz (uint8_t y, uint8_t x1, uint8_t x2)
return status; // error
}
// start COLUMN
status = SSD1306_Send_Command (0);
status = SSD1306_Send_Command (START_COLUMN_ADDR);
if (SSD1306_SUCCESS != status) { // check status
return status; // error
}
// end COLUMN
status = SSD1306_Send_Command (127);
status = SSD1306_Send_Command (END_COLUMN_ADDR);
if (SSD1306_SUCCESS != status) { // check status
return status; // error
}
// PAGE
// -------------------------------------------------------------------------------------
status = SSD1306_Send_Command (SSD1306_SET_PAGE_ADDR); // 0x22
@ -643,62 +652,43 @@ uint8_t SSD1306_DrawLineHorz (uint8_t y, uint8_t x1, uint8_t x2)
return status; // error
}
// start PAGE
status = SSD1306_Send_Command (0);
status = SSD1306_Send_Command (START_PAGE_ADDR);
if (SSD1306_SUCCESS != status) { // check status
return status; // error
}
// end PAGE
status = SSD1306_Send_Command (3);
status = SSD1306_Send_Command (END_PAGE_ADDR);
if (SSD1306_SUCCESS != status) { // check status
return status; // error
}
// TWI control byte data stream
// -------------------------------------------------------------------------------------
status = TWI_MT_Send_Data (SSD1306_DATA_STREAM); // send data 0x40
if (SSD1306_SUCCESS != status) { // check status
return status; // error
}
i = 0;
j = 0;
// send pixels
// -------------------------------------------------------------------------------------
i = 0;
j = 0;
while (i < RAM_Y_END) {
while (j < RAM_X_END) {
status = TWI_MT_Send_Data (ram[i][j]); // send data col
status = TWI_MT_Send_Data (ram[i][j]); // send RAM buffer
if (SSD1306_SUCCESS != status) { // check status
return status; // error
}
j++;
}
j = 0;
i++;
j = 0; // null x counter
i++; // next page
}
// TWI stop
// -------------------------------------------------------------------------------------
TWI_Stop ();
return SSD1306_SUCCESS; // success return
}
/**
* @desc Draw line vertical
*
* @param uint8_t
* @param uint8_t
* @param uint8_t
*
* @return uint8_t
*/
uint8_t SSD1306_DrawLineVert (uint8_t x, uint8_t y1, uint8_t y2)
{
return SSD1306_SUCCESS; // success
}
/**
* @desc Draw line by Bresenham algoritm
*