STM32F042驱动I2C OLED程序源码 -

/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32f0xx_hal.h"
/* USER CODE BEGIN Includes */
#define address 0x78
/* USER CODE END Includes */
/* Private variables ---------------------------------------------------------*/
I2C_HandleTypeDef hi2c1;
/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
unsigned char buffer12864[8][128] = { 0x00,};
const unsigned char logo[8][128] = {
0xFF, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
…………
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…………限于本文篇幅余下代码请从51黑下载附件…………
0x00, 0x06, 0x01, 0x01, 0x02, 0x02, 0x04, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //~
};
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_I2C1_Init(void);
/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/
void Writecom(uint8_t COM);
void Writedata(uint8_t DATA);
void SSD1306_Init(void);
void clear(uint8_t data);
void Draw_Point(uint8_t x, uint8_t y);
void Draw_Line(uint8_t x1, uint8_t y1, uint8_t x2, uint8_t y2);
void Draw_byte(uint8_t page, uint8_t lie, uint8_t data);
void Draw_byte_clear(uint8_t page, uint8_t lie, uint8_t data);
void show_char(uint8_t page, uint8_t lie, uint8_t data);
void show_char_clear(uint8_t page, uint8_t lie, uint8_t data);
void show_string(uint8_t page, uint8_t lie, uint8_t *Data, uint16_t length);
void show_string_clear(uint8_t page, uint8_t lie, uint8_t *Data, uint16_t length);
void display_logo(void);
/* USER CODE END PFP */
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration----------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_I2C1_Init();
/* USER CODE BEGIN 2 */
SSD1306_Init(); //SSD1306_Init
HAL_Delay(100);
// display_logo();//logo
// HAL_Delay(1000);
clear(0x00);
uint8_t xx[6] = "hello!";
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
display_logo();
while(1);
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
/** System Clock Configuration
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_PeriphCLKInitTypeDef PeriphClkInit;
/**Initializes the CPU, AHB and APB busses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_HSI48;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSI48State = RCC_HSI48_ON;
RCC_OscInitStruct.HSICalibrationValue = 16;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Initializes the CPU, AHB and APB busses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI48;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_I2C1;
PeriphClkInit.I2c1ClockSelection = RCC_I2C1CLKSOURCE_HSI;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Configure the Systick interrupt time
*/
HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
/**Configure the Systick
*/
HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
/* SysTick_IRQn interrupt configuration */
HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}
/* I2C1 init function */
static void MX_I2C1_Init(void)
{
hi2c1.Instance = I2C1;
hi2c1.Init.Timing = 0x2000090E;
hi2c1.Init.OwnAddress1 = 0;
hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c1.Init.OwnAddress2 = 0;
hi2c1.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if (HAL_I2C_Init(&hi2c1) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Configure Analogue filter
*/
if (HAL_I2CEx_ConfigAnalogFilter(&hi2c1, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Configure Digital filter
*/
if (HAL_I2CEx_ConfigDigitalFilter(&hi2c1, 0) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
}
/** Configure pins as
* Analog
* Input
* Output
* EVENT_OUT
* EXTI
*/
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOB_CLK_ENABLE();
__HAL_RCC_GPIOF_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_8, GPIO_PIN_SET);
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOB, LED_Pin|GPIO_PIN_7, GPIO_PIN_RESET);
/*Configure GPIO pin : PB8 */
GPIO_InitStruct.Pin = GPIO_PIN_8;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_PULLDOWN;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/*Configure GPIO pin : LED_Pin */
GPIO_InitStruct.Pin = LED_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(LED_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pin : PB7 */
GPIO_InitStruct.Pin = GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
}
/* USER CODE BEGIN 4 */
void Writecom(uint8_t COM)
{
HAL_I2C_Mem_Write(&hi2c1,address,0X00,1,&COM,1,10);
}
/*=====i2c???=====*/
void Writedata(uint8_t DATA)
{
HAL_I2C_Mem_Write(&hi2c1,address,0X40,1,&DATA,1,10);
}
/*=====OLED ???=====*/
void SSD1306_Init()
{
Writecom(0XAE);//display off
//HAL_GPIO_WritePin(GPIOA,PA9_Pin,GPIO_PIN_RESET);
Writecom(0X00);//set lower column address
Writecom(0X10);//set higher column address
Writecom(0X40);//set display start line
Writecom(0XB0);//set page address
Writecom(0X81);//set contract control
Writecom(0XCF);// VCC Generated by Internal DC/DC Circuit
Writecom(0XA1);//set segment remap column address 127 is mapped to SEG0
Writecom(0XA6);//normal / reverse normal display
Writecom(0XA8);//multiplex ratio
Writecom(0X3F);//1/64
Writecom(0XC8);//Com scan direction remapped mode. Scan from COM[N-1] to COM0
Writecom(0XD3);//set display offset
Writecom(0X00);
Writecom(0XD5);//set osc division
Writecom(0X80);
Writecom(0XD9);//set pre-charge period
Writecom(0X11);
Writecom(0XDa);//set COM pins
Writecom(0X12);
Writecom(0X8d);/*set charge pump enable*/
Writecom(0X14);
Writecom(0Xdb);//Set VcomH
Writecom(0X20);
Writecom(0XAF);//display ON
}
/*===========================????===========================*/
void clear(uint8_t data)
{
// Writecom(0XAE);//display OFF
static unsigned char i, j;
Writecom(0x00);//set lower column address
Writecom(0x10);//set higher column address
for (j = 0; j < 8; j++)
{
Writecom(0xB0 + j); //set page address
for (i = 0; i < 128; i++)
{
buffer12864[j][i] = 0x00;
Writedata(data);
}
}
// Writecom(0XAF);//display ON
}
/*===========================??===========================*/
void Draw_Point(uint8_t x, uint8_t y)
{
static unsigned char page, higher, lower, cache1, cache2;
page = y / 8;
higher = x / 16;
lower = x % 16;
cache1 = 0x01 << (y % 8);
cache2 = buffer12864[ PAGE][x] | cache1;
buffer12864[ PAGE][x] = cache2;
Writecom(0xB0 + page); //set page address, page<=7
Writecom(0x10 + higher); //set higher column address, higher<=7
Writecom(0x00 + lower);//set lower column address, lower<=15
Writedata(cache2);
}
void Draw_Line(uint8_t x1, uint8_t y1, uint8_t x2, uint8_t y2)
{
int x , y;
float k;
if(x1 == x2)
{
y =y2 - y1;
if(y<0)y=0-y;
for(x = 0; x <y; x++)
{
if(y > 0)Draw_Point(x1, y1 + x);
else if(y < 0)Draw_Point(x1, y1 - x);
else Draw_Point(x1, y1);
}
}
if(y1 == y2)
{
y =x2 - x1;
if(y<0)y=0-y;
for(x = 0; x < y; x++)
{
if(y > 0)Draw_Point(x1 + x, y1);
else Draw_Point(x1 - x, y1);
}
}
if(x1 < x2)
{
y = x2 - x1;
k = (y2 - y1)/y;
for(x = 0 ; x <= y; x++)
{
Draw_Point(x1 + x, y1 + (int)(x * k));
}
}
else
{
y = x1 - x2;
k = (y1 - y2)/y;
for(x = 0 ; x <= y; x++)
{
Draw_Point(x2 + x, y2 + (int)(x * k));
}
}
/*
uint8_t t;
uint8_t xerr=0,yerr=0,delta_x,delta_y,distance;
uint8_t incx,incy,uRow,uCol;
delta_x=x2-x1;
delta_y=y2-y1;
uRow=x1;
uCol=y1;
if(delta_x>0)incx=1;
else if(delta_x==0)incx=0;
else {incx=-1;delta_x=-delta_x;}
if(delta_y>0)incy=1;
else if(delta_y==0)incy=0;
else{incy=-1;delta_y=-delta_y;}
if( delta_x>delta_y)distance=delta_x;
else distance=delta_y;
for(t=0;t<=distance+1;t++ )
{
Draw_Point(uRow,uCol);
xerr+=delta_x ;
yerr+=delta_y ;
if(xerr>distance)
{
xerr-=distance;
uRow+=incx;
}
if(yerr>distance)
{
yerr-=distance;
uCol+=incy;
}
} */
}
/*===========================?????===========================*/
void Draw_byte(uint8_t page, uint8_t lie, uint8_t data)
{
static unsigned char higher, lower, cache;
higher = lie / 16;
lower = lie % 16;
cache = buffer12864[ PAGE][lie] | data;
buffer12864[ PAGE][lie] = cache;
Writecom(0xB0 + page); //set page address, page<=7
Writecom(0x10 + higher); //set higher column address, higher<=7
Writecom(0x00 + lower);//set lower column address, lower<=15
Writedata(cache);
}
/*===========================????===========================*/
void Draw_byte_clear(uint8_t page, uint8_t lie, uint8_t data) //half
{
static unsigned char higher, lower, cache;
higher = lie / 16;
lower = lie % 16;
cache = buffer12864[ PAGE][lie] | data;
Writecom(0xB0 + page); //set page address, page<=7
Writecom(0x10 + higher); //set higher column address, higher<=7
Writecom(0x00 + lower);//set lower column address, lower<=15
Writedata(cache);
}
/*===========================?????===========================*/
void show_char(uint8_t page, uint8_t lie, uint8_t data)
{
if ((data <= '~') && (data >= ' '))
{
for (int m = 0; m < 8; m++)
{
Draw_byte(page, lie + m, F8X16[data - 32][m]);
Draw_byte(page + 1, lie + m, F8X16[data - 32][m + 8]);
}
}
}
/*===========================?????===========================*/
void show_char_clear(uint8_t page, uint8_t lie, uint8_t data)
{
if ((data <= '~') && (data >= ' '))
{
for (int m = 0; m < 8; m++)
{
Draw_byte_clear(page, lie + m, F8X16[data - 32][m]);
Draw_byte_clear(page + 1, lie + m, F8X16[data - 32][m + 8]);
}
}
else
{
for (int m = 0; m < 8; m++)
{
Draw_byte_clear(page, lie + m, F8X16[0][m]);
Draw_byte_clear(page + 1, lie + m, F8X16[0][m + 8]);
}
}
}
/*===========================??????===========================*/
void show_string(uint8_t page, uint8_t lie, uint8_t *Data, uint16_t length)
{
uint8_t m=0;
if((128-length*8-lie)>0)
{
for (m = 0; m < length; m++)
{
show_char(page, lie + m * 8, *Data++);
}
}
else
{
for (m = 0; m < ((128-lie)/8); m++)
{
show_char(page, lie + m * 8, *Data++);
}
for (m = 0; m < length; m++)
{
show_char(page+2, m * 8, *Data++);
}
}
}
/*===========================??????===========================*/
void show_string_clear(uint8_t page, uint8_t lie, uint8_t *Data, uint16_t length) //
{
uint8_t m=0;
if((128-length*8-lie)>0)
{
for (m = 0; m < length; m++)
{
show_char(page, lie + m * 8, *Data++);
}
}
else
{
for (m = 0; m < ((128-lie)/8); m++)
{
show_char_clear(page, lie + m * 8, *Data++);
}
for (m = 0; m < length; m++)
{
show_char_clear(page+2, m * 8, *Data++);
}
}
}
/*===========================????===========================*/
void display_logo(void)
{
Writecom(0XAE);//display OFF
static unsigned char x, y, m, n;
for (x = 0; x < 8; x++)
{
for (y = 0; y < 128; y++)
{
Draw_byte_clear(x, y, logo[x][y]); // pgm_read_byte(&logo[x][y]) ????flash????
}
}
Writecom(0XAF);//display ON
for (m = 0; m < 8; m++) //?????
{
for (n = 0; n < 64; n++)
{
Writecom(0XD3);//set display offset
Writecom(0X00 + n);
HAL_Delay(1);
}
}
for (m = 0; m < 5; m++)
{
for (n = 0; n < 64; n++)
{
Writecom(0XD3);//set display offset
Writecom(0X00 + n);
HAL_Delay(2);
}
}
Writecom(0XD3);//set display offset
Writecom(0X00);
HAL_Delay(100);
}
/* USER CODE END 4 */
/**
* @brief This function is executed in case of error occurrence.
* @param None
* @retval None
*/
void _Error_Handler(char * file, int line)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
while(1)
{
}
/* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t* file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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