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oled initialization with ssd1306

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oled-main with structure
ssd1306 initialization
This commit is contained in:
bartool
2022-06-17 23:04:16 +02:00
parent ebccd5c430
commit 2663ee6e2a
13 changed files with 283 additions and 2 deletions
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25
.vscode/c_cpp_properties.json vendored Normal file
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@@ -0,0 +1,25 @@
{
"configurations": [
{
"name": "Win32",
"includePath": [
"${workspaceFolder}/utility/unity/core",
"${workspaceFolder}/utility/unity/fixture",
"${workspaceFolder}/test/oled/helpers/inc",
"${workspaceFolder}/test/oled/",
"${workspaceFolder}/**"
],
"defines": [
"_DEBUG",
"UNICODE",
"_UNICODE",
"TEST"
],
"compilerPath": "C:\\Apps\\mingw64\\bin\\gcc.exe",
"cStandard": "gnu17",
"cppStandard": "gnu++17",
"intelliSenseMode": "windows-gcc-x64"
}
],
"version": 4
}

2
CMakeLists.txt
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@@ -1,5 +1,7 @@
cmake_minimum_required(VERSION 3.10)
project(my_libs VERSION 0.1.0)
set(EXECUTABLE_OUTPUT_PATH ${PROJECT_BINARY_DIR}/exe)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra")
set(CMAKE_BUILD_TYPE Debug)

12
oled/connection.c Normal file
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#include "connection.h"
HAL_StatusTypeDef oled_SendCommand(OLED_HandleTypeDef *hOled, uint8_t *pData, uint16_t Size)
{
return HAL_I2C_Mem_Write(hOled->hi2c, (hOled->DevAddress) << 1, I2C_COMMAND, 1, pData, Size, I2C_TIMEOUT);
}
HAL_StatusTypeDef oled_SendData(OLED_HandleTypeDef *hOled, uint8_t *pData, uint16_t Size)
{
return HAL_I2C_Mem_Write(hOled->hi2c, (hOled->DevAddress) << 1, I2C_DATA, 1, pData, Size, I2C_TIMEOUT);
}

7
oled/connection.h Normal file
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#pragma once
#include "main.h"
#include "oled.h"
HAL_StatusTypeDef oled_SendCommand(OLED_HandleTypeDef *hOled, uint8_t *pData, uint16_t Size);
HAL_StatusTypeDef oled_SendData(OLED_HandleTypeDef *hOled, uint8_t *pData, uint16_t Size);

59
oled/oled.c Normal file
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@@ -0,0 +1,59 @@
#include <stdlib.h>
#include "oled.h"
#include "ssd1306.h"
HAL_StatusTypeDef oled_Config(OLED_HandleTypeDef *hOled, uint8_t DevAddress, uint8_t Width, uint8_t Height, OLED_DisplayTypeDef OledType)
{
if (hOled == NULL || Width == 0 || Height == 0 || OledType == UNKNOWN)
{
return HAL_ERROR;
}
hOled->DevAddress = DevAddress;
hOled->Width = Width;
hOled->Height = Height;
hOled->OledType = OledType;
hOled->Buffer = (uint8_t *)malloc(Width * ((Height + 7) / 8));
if (hOled->Buffer == NULL)
{
return HAL_ERROR;
}
return HAL_OK;
}
void oled_init(OLED_HandleTypeDef *hOled, I2C_HandleTypeDef *hi2c)
{
if (hOled == NULL || hi2c == NULL)
{
return;
}
if (hOled->Buffer == NULL)
{
return;
}
hOled->hi2c = hi2c;
switch (hOled->OledType)
{
case SSD1306:
SSD1306_Init(hOled);
break;
case SH1106:
SH1106_Init(hOled);
break;
default:
break;
}
}
int main(void)
{
OLED_HandleTypeDef display;
oled_Config(&display, 0x3C, 128, 64, SH1106);
}

27
oled/oled.h Normal file
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@@ -0,0 +1,27 @@
#pragma once
#include "main.h"
#define I2C_COMMAND 0x00
#define I2C_DATA 0x40
#define I2C_TIMEOUT 100
typedef enum
{
UNKNOWN,
SSD1306,
SH1106
} OLED_DisplayTypeDef;
typedef struct
{
I2C_HandleTypeDef *hi2c;
OLED_DisplayTypeDef OledType;
uint8_t DevAddress;
uint8_t Width;
uint8_t Height;
uint8_t *Buffer;
} OLED_HandleTypeDef;
void oled_init(OLED_HandleTypeDef *hOled, I2C_HandleTypeDef *hi2c);

7
oled/sh1106/sh1106.c Normal file
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@@ -0,0 +1,7 @@
#include "sh1106.h"
#include "connection.h"
void SH1106_Init(OLED_HandleTypeDef *hOled)
{
}

23
oled/sh1106/sh1106.h Normal file
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@@ -0,0 +1,23 @@
#pragma once
#define LOWCOLADDR 0x00 // 0x00h (0000 XXXX)
#define HIGHCOLADDR 0x10 // 0x10h (0001 XXXX)
#define PUMPVOLTAGE 0x30 // 0x32h (0011 00XX)
#define LINEADDRESS 0x40 // 0x40h (01XX XXXX)
#define CONTRASTMODE 0x81 // (1000 0001)
#define CONTRASTVALUE 0x80 // 0x80h (0x00h - 0xFFh) (XXXX XXXX)
#define SEGMENTREMAP 0xA0 // 0xA0h (1010 000X) right(0), left(1)
#define ENTIREDISPALY 0xA4 // 0xA4h (1010 010X) normal(0), entire(1)
#define NORMALORREVERS 0xA6 // 0xA6h (1010 011X) normal(0), reverse(1)
#define MULTIPLEXMODE 0xA8 // (1010 1000)
#define MILTIPLEXVALUE 0x3F // 0x3Fh (00XX XXXX) (0x00h - 0x3Fh)
#define DCCONTROLMODE 0xAD // (1010 1101)
#define DCCONTROLVALUE 0x8B // 0x8Bh (1000 101X) ON(1), OFF(0)
#define DISPLAYOFF 0xAE
#define DISPLAYON 0xAF // 0xAEh (1010 111X) ON(1), OFF(0)
#define PAGEADDRESS 0xB0 // 0xB0h (1011 XXXX)
#define OUTPUTSCANDIR 0xC0 // 0xC0h (1100 X000)
#define OFFSETMODE 0xD3 // (1101 0011)
#define OFFSETVALUE 0x00 // 0x00h (00XX XXXX) COM0-63
#define DIVRATIOFREQM 0xD5 // (1101 0101)
#define DIVRATIOFREQV 0x50 // 0x50h (FFFF DDDD) Frequency, Divide

46
oled/ssd1306/ssd1306.c Normal file
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#include "ssd1306.h"
#include "connection.h"
void SSD1306_Init(OLED_HandleTypeDef *hOled)
{
uint8_t comPins = 0x02;
uint8_t contrast = 0x8F;
if ((hOled->Width == 128) && (hOled->Height == 32)) {
comPins = 0x02;
contrast = 0x0F;
} else if ((hOled->Width == 128) && (hOled->Height == 64)) {
comPins = 0x12;
contrast = 0xCF;
} else if ((hOled->Width == 96) && (hOled->Height == 16)) {
comPins = 0x02; // ada x12
contrast = 0xAF;
}
oled_SendCommand(hOled, SSD1306_DISPLAYOFF, 1);
const uint8_t config[] = {
SSD1306_SETMULTIPLEX, hOled->Height -1,
SSD1306_SETDISPLAYOFFSET, 0x00,
SSD1306_SETSTARTLINE | 0x00,
SSD1306_SEGREMAP | 0x01,
SSD1306_COMSCANDEC,
SSD1306_SETCOMPINS, comPins,
SSD1306_SETCONTRAST, contrast,
SSD1306_DISPLAYALLON_RESUME,
SSD1306_NORMALDISPLAY,
SSD1306_SETDISPLAYCLOCKDIV, 0x80,
SSD1306_CHARGEPUMP, 0x14,
SSD1306_MEMORYMODE, 0x00,
SSD1306_DEACTIVATE_SCROLL,
SSD1306_SETPRECHARGE, 0xF1,
SSD1306_SETVCOMDETECT, 0x40
};
oled_SendCommand(hOled, config, sizeof(config));
oled_SendCommand(hOled, SSD1306_DISPLAYON, 1);
}

40
oled/ssd1306/ssd1306.h Normal file
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@@ -0,0 +1,40 @@
#pragma once
#define SSD1306_MEMORYMODE 0x20 ///< See datasheet
#define SSD1306_COLUMNADDR 0x21 ///< See datasheet
#define SSD1306_PAGEADDR 0x22 ///< See datasheet
#define SSD1306_SETCONTRAST 0x81 ///< See datasheet
#define SSD1306_CHARGEPUMP 0x8D ///< See datasheet
#define SSD1306_SEGREMAP 0xA0 ///< See datasheet
#define SSD1306_DISPLAYALLON_RESUME 0xA4 ///< See datasheet
#define SSD1306_DISPLAYALLON 0xA5 ///< Not currently used
#define SSD1306_NORMALDISPLAY 0xA6 ///< See datasheet
#define SSD1306_INVERTDISPLAY 0xA7 ///< See datasheet
#define SSD1306_SETMULTIPLEX 0xA8 ///< See datasheet
#define SSD1306_DISPLAYOFF 0xAE ///< See datasheet
#define SSD1306_DISPLAYON 0xAF ///< See datasheet
#define SSD1306_COMSCANINC 0xC0 ///< Not currently used
#define SSD1306_COMSCANDEC 0xC8 ///< See datasheet
#define SSD1306_SETDISPLAYOFFSET 0xD3 ///< See datasheet
#define SSD1306_SETDISPLAYCLOCKDIV 0xD5 ///< See datasheet
#define SSD1306_SETPRECHARGE 0xD9 ///< See datasheet
#define SSD1306_SETCOMPINS 0xDA ///< See datasheet
#define SSD1306_SETVCOMDETECT 0xDB ///< See datasheet
#define SSD1306_SETLOWCOLUMN 0x00 ///< Not currently used
#define SSD1306_SETHIGHCOLUMN 0x10 ///< Not currently used
#define SSD1306_SETSTARTLINE 0x40 ///< See datasheet
#define SSD1306_EXTERNALVCC 0x01 ///< External display voltage source
#define SSD1306_SWITCHCAPVCC 0x02 ///< Gen. display voltage from 3.3V
#define SSD1306_RIGHT_HORIZONTAL_SCROLL 0x26 ///< Init rt scroll
#define SSD1306_LEFT_HORIZONTAL_SCROLL 0x27 ///< Init left scroll
#define SSD1306_VERTICAL_AND_RIGHT_HORIZONTAL_SCROLL 0x29 ///< Init diag scroll
#define SSD1306_VERTICAL_AND_LEFT_HORIZONTAL_SCROLL 0x2A ///< Init diag scroll
#define SSD1306_DEACTIVATE_SCROLL 0x2E ///< Stop scroll
#define SSD1306_ACTIVATE_SCROLL 0x2F ///< Start scroll
#define SSD1306_SET_VERTICAL_SCROLL_AREA 0xA3 ///< Set scroll range
void SSD1306_Init(OLED_HandleTypeDef *hOled);

5
test/oled/CMakeLists.txt
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@@ -8,10 +8,11 @@ set(INCLUDE_DIRS
)
set(SRCS
../../oled/oled.c
helpers/src/mock_i2c.c
)
add_definitions(-DTEST)
add_executable(${TEST_NAME} ${SRCS})
target_include_directories(${TEST_NAME} PUBLIC ${INCLUDE_DIR})
target_include_directories(${TEST_NAME} PUBLIC ${INCLUDE_DIRS})

18
test/oled/helpers/inc/main.h Normal file
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@@ -0,0 +1,18 @@
#pragma once
#include <stdint.h>
typedef struct
{
uint8_t dummy;
}I2C_HandleTypeDef;
typedef enum
{
HAL_OK = 0x00U,
HAL_ERROR = 0x01U,
HAL_BUSY = 0x02U,
HAL_TIMEOUT = 0x03
} HAL_StatusTypeDef;
HAL_StatusTypeDef HAL_I2C_Mem_Write(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout);

14
test/oled/helpers/src/mock_i2c.c Normal file
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#include "main.h"
HAL_StatusTypeDef HAL_I2C_Mem_Write(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout)
{
(void)hi2c;
(void)DevAddress;
(void)MemAddress;
(void)MemAddSize;
(void)pData;
(void)Size;
(void)Timeout;
return HAL_OK;
}