mirror of
https://github.com/Matiasus/SSD1306.git
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Small code modification
This commit is contained in:
Marián
GitHub
parent
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commit
f1845d86ac
@ -1,7 +1,7 @@
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/**
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* --------------------------------------------------------------------------------------+
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/**
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* --------------------------------------------------------------------------------------+
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* @desc SSD1306 OLED Driver
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* --------------------------------------------------------------------------------------+
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* --------------------------------------------------------------------------------------+
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* Copyright (C) 2020 Marian Hrinko.
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* Written by Marian Hrinko (mato.hrinko@gmail.com)
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*
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@ -13,11 +13,11 @@
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* @tested AVR Atmega328p
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*
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* @depend font.h, twi.h
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* --------------------------------------------------------------------------------------+
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* --------------------------------------------------------------------------------------+
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* @descr Version 1.0 -> applicable for 1 display
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* Version 2.0 -> rebuild to 'cacheMemLcd' array
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* Version 3.0 -> remove 'cacheMemLcd' approach
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* --------------------------------------------------------------------------------------+
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* --------------------------------------------------------------------------------------+
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* @usage Basic Setup for OLED Display
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*/
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// @includes
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@ -139,7 +139,7 @@ unsigned short int _indexPage = START_PAGE_ADDR; // @var global
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* @return uint8_t
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*/
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uint8_t SSD1306_Init (void)
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{
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{
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const uint8_t *commands = INIT_SSD1306; // variables
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uint8_t no_of_commands = pgm_read_byte(commands++); // number of commands
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uint8_t no_of_arguments; // number od arguments
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@ -150,24 +150,24 @@ uint8_t SSD1306_Init (void)
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// -------------------------------------------------------------------------------------
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TWI_Init ();
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// TWI Start & SLAW
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// TWI START & SLAW
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// -------------------------------------------------------------------------------------
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status = SSD1306_Send_StartAndSLAW (SSD1306_ADDR); // start & SLAW
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if (SSD1306_SUCCESS != status) { // check status
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return status; // error
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}
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// MAIN LOOP
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// SEND COMMAND & ARGUMENTS
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// -------------------------------------------------------------------------------------
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while (no_of_commands) { // commands loop
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no_of_arguments = pgm_read_byte (commands++); // number of arguments
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command = pgm_read_byte (commands++); // command
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// SEND COMMAND
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// Send commands
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// -----------------------------------------------------------------------------------
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status = SSD1306_Send_Command (command); // send command
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if (SSD1306_SUCCESS != status) { // check status
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return status; // error
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}
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// SEND ARGUMENTS
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// Send arguments
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// -----------------------------------------------------------------------------------
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while (no_of_arguments--) {
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status = SSD1306_Send_Command (pgm_read_byte(commands++)); // send argument
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@ -175,7 +175,6 @@ uint8_t SSD1306_Init (void)
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return status; // error
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}
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}
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no_of_commands--; // next command
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}
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// TWI STOP
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@ -202,13 +201,13 @@ uint8_t SSD1306_Send_StartAndSLAW (uint8_t address)
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if (SSD1306_SUCCESS != status) { // check status
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return status; // error
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}
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// TWI start & SLAW
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// TWI SLAW
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// -------------------------------------------------------------------------------------
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status = TWI_MT_Send_SLAW (address); // start & SLAW
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if (SSD1306_SUCCESS != status) { // check status
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return status; // error
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}
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return SSD1306_SUCCESS; // success
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}
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@ -224,7 +223,7 @@ uint8_t SSD1306_Send_Command (uint8_t command)
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uint8_t status = INIT_STATUS; // TWI init status 0xFF
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// TWI send control byte
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// -------------------------------------------------------------------------------------
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// -------------------------------------------------------------------------------------
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status = TWI_MT_Send_Data (SSD1306_COMMAND); // send control byte
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if (SSD1306_SUCCESS != status) { // check status
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return status; // error
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@ -250,7 +249,7 @@ uint8_t SSD1306_NormalScreen (void)
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{
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uint8_t status = INIT_STATUS; // TWI init status 0xFF
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// TWI start & SLAW
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// TWI START & SLAW
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// -------------------------------------------------------------------------------------
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status = SSD1306_Send_StartAndSLAW (SSD1306_ADDR); // start & SLAW
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if (SSD1306_SUCCESS != status) { // check status
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@ -262,6 +261,9 @@ uint8_t SSD1306_NormalScreen (void)
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if (SSD1306_SUCCESS != status) { // check status
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return status; // error
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}
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// TWI STOP
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// -------------------------------------------------------------------------------------
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TWI_Stop ();
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return SSD1306_SUCCESS; // success
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}
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@ -277,7 +279,7 @@ uint8_t SSD1306_InverseScreen (void)
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{
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uint8_t status = INIT_STATUS; // TWI init status 0xFF
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// TWI start & SLAW
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// TWI START & SLAW
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// -------------------------------------------------------------------------------------
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status = SSD1306_Send_StartAndSLAW (SSD1306_ADDR); // start & SLAW
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if (SSD1306_SUCCESS != status) { // check status
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@ -289,6 +291,9 @@ uint8_t SSD1306_InverseScreen (void)
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if (SSD1306_SUCCESS != status) { // check status
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return status; // error
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}
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// TWI STOP
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// -------------------------------------------------------------------------------------
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TWI_Stop ();
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return SSD1306_SUCCESS; // success
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}
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@ -305,7 +310,7 @@ uint8_t SSD1306_ClearScreen (void)
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uint8_t status = INIT_STATUS; // TWI init status 0xFF
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uint16_t i = 0; // counter
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// TWI start & SLAW
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// TWI START & SLAW
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// -------------------------------------------------------------------------------------
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status = SSD1306_Send_StartAndSLAW (SSD1306_ADDR); // start & SLAW
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if (SSD1306_SUCCESS != status) { // check status
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@ -326,7 +331,7 @@ uint8_t SSD1306_ClearScreen (void)
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}
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i++; // update counter
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}
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// TWI stop
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// TWI STOP
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// -------------------------------------------------------------------------------------
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TWI_Stop ();
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@ -341,18 +346,18 @@ uint8_t SSD1306_ClearScreen (void)
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*
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* @return void
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*/
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uint8_t SSD1306_SetPosition (uint8_t x, uint8_t y)
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uint8_t SSD1306_SetPosition (uint8_t x, uint8_t y)
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{
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uint8_t status = INIT_STATUS; // TWI init status 0xFF
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// TWI start & SLAW
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// TWI START & SLAW
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// -------------------------------------------------------------------------------------
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status = SSD1306_Send_StartAndSLAW (SSD1306_ADDR); // start & SLAW
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if (SSD1306_SUCCESS != status) { // check status
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return status; // error
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}
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// COLUMN
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// -------------------------------------------------------------------------------------
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// -------------------------------------------------------------------------------------
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status = SSD1306_Send_Command (SSD1306_SET_COLUMN_ADDR); // 0x21
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if (SSD1306_SUCCESS != status) { // check status
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return status; // error
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@ -381,7 +386,8 @@ uint8_t SSD1306_SetPosition (uint8_t x, uint8_t y)
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return status; // error
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}
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_indexPage = y; // update column index
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// TWI stop
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// TWI STOP
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// -------------------------------------------------------------------------------------
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TWI_Stop ();
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@ -396,7 +402,7 @@ uint8_t SSD1306_SetPosition (uint8_t x, uint8_t y)
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*
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* @return uint8_t
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*/
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uint8_t SSD1306_UpdatePosition (void)
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uint8_t SSD1306_UpdatePosition (void)
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{
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uint8_t status = INIT_STATUS; // TWI init status 0xFF
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uint8_t x = _indexCol + CHARS_COLS_LENGTH + 1; // check end col position
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@ -417,10 +423,10 @@ uint8_t SSD1306_UpdatePosition (void)
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// last page reached
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// -----------------------------------------------------------------------------------
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if (_indexPage >= END_PAGE_ADDR) {
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return SSD1306_ERROR; // return out of range
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return SSD1306_ERROR; // return out of range
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}
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}
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return SSD1306_SUCCESS; // success
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}
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@ -442,7 +448,8 @@ uint8_t SSD1306_DrawChar (char ch)
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if (SSD1306_SUCCESS != status) { // check status
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return status; // error
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}
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// TWI start & SLAW
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// TWI START & SLAW
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// -------------------------------------------------------------------------------------
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status = SSD1306_Send_StartAndSLAW (SSD1306_ADDR); // start & SLAW
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if (SSD1306_SUCCESS != status) { // check status
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@ -471,7 +478,7 @@ uint8_t SSD1306_DrawChar (char ch)
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}
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_indexCol = _indexCol + CHARS_COLS_LENGTH + 1; // update global col
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// TWI stop
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// TWI STOP
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// -------------------------------------------------------------------------------------
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TWI_Stop ();
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@ -490,7 +497,7 @@ uint8_t SSD1306_DrawString (char *str)
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uint8_t i = 0; // char counter
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// send characters of string
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// -------------------------------------------------------------------------------------
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// -------------------------------------------------------------------------------------
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while (str[i] != '\0') {
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SSD1306_DrawChar (str[i++]); // send char
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}
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@ -511,12 +518,12 @@ uint8_t SSD1306_DrawPixel (uint8_t x, uint8_t y)
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uint8_t page = y >> 3; // find page (y / 8)
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uint8_t pixel = 1 << (y - (page << 3)); // which pixel (y % 8)
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uint8_t status = INIT_STATUS; // TWI init status 0xFF
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if ((x > MAX_X) || (y > MAX_Y)) { // if out of range
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return SSD1306_ERROR; // error
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}
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// TWI start & SLAW
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// TWI START & SLAW
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// -------------------------------------------------------------------------------------
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status = SSD1306_Send_StartAndSLAW (SSD1306_ADDR); // start & SLAW
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if (SSD1306_SUCCESS != status) { // check status
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@ -566,7 +573,8 @@ uint8_t SSD1306_DrawPixel (uint8_t x, uint8_t y)
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if (SSD1306_SUCCESS != status) { // check status
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return status; // error
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}
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// TWI stop
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// TWI STOP
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// -------------------------------------------------------------------------------------
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TWI_Stop ();
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@ -588,12 +596,12 @@ uint8_t SSD1306_DrawLineHorz (uint8_t y, uint8_t x1, uint8_t x2)
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uint8_t i = 0; // counter for y dim
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uint8_t j = 0; // counter for x dim
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uint8_t page = y >> 3; // page
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uint8_t pixel = 1 << (y - (page << 3)); // which pixel
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uint8_t pixel = 1 << (y - (page << 3)); // which pixel
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uint8_t ram[RAM_Y_END][RAM_X_END]; // buffer [3/7 x 127]
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// fill RAM buffer
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// -------------------------------------------------------------------------------------
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while (i < RAM_Y_END)
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// -------------------------------------------------------------------------------------
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while (i < RAM_Y_END)
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{
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if (i == page) { // for correspond page
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//memset (ram[i], pixel, RAM_X_END); // draw line
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@ -611,7 +619,7 @@ uint8_t SSD1306_DrawLineHorz (uint8_t y, uint8_t x1, uint8_t x2)
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}
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i++; // next page
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}
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// TWI start & SLAW
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// TWI START & SLAW
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// -------------------------------------------------------------------------------------
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status = SSD1306_Send_StartAndSLAW (SSD1306_ADDR); // start & SLAW
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if (SSD1306_SUCCESS != status) { // check status
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@ -670,7 +678,8 @@ uint8_t SSD1306_DrawLineHorz (uint8_t y, uint8_t x1, uint8_t x2)
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j = 0; // null x counter
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i++; // next page
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}
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// TWI stop
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// TWI STOP
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// -------------------------------------------------------------------------------------
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TWI_Stop ();
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@ -695,7 +704,7 @@ uint8_t SSD1306_DrawLine (uint8_t x1, uint8_t x2, uint8_t y1, uint8_t y2)
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int16_t delta_x, delta_y; // deltas
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int16_t trace_x = 1, trace_y = 1; // steps
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if ((x1 > MAX_X) || (y1 > MAX_Y) ||
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if ((x1 > MAX_X) || (y1 > MAX_Y) ||
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(x2 > MAX_X) || (y2 > MAX_Y) ) { // out of range?
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return SSD1306_ERROR; // error
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}
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@ -714,8 +723,8 @@ uint8_t SSD1306_DrawLine (uint8_t x1, uint8_t x2, uint8_t y1, uint8_t y2)
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if (SSD1306_SUCCESS != status) { // check status
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return status; // error
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}
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return SSD1306_SUCCESS; // success return
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}
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return SSD1306_SUCCESS; // success return
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}
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// condition for m < 1 (dy < dx)
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// -------------------------------------------------------------------------------------
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