Ja ich denke schon:
Main.c
Code:
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32f1xx_hal.h"
/* USER CODE BEGIN Includes */
#include "string.h"
#include <stdio.h>
#include <stdarg.h>
#include <u8g_arm.h>
/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
uint8_t outbuffer[2]={0x40,0xff};
//Display
static u8g_t u8g;
....
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_ADC1_Init();
MX_I2C1_Init();
/* USER CODE BEGIN 2 */
DisplayInit();
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
//SSD1307
//Slave Adress vom Display = 3C
//Display Ansteuerung:
HAL_I2C_Master_Transmit(&hi2c1, 0x3C, outbuffer, sizeof(outbuffer), 1);
// u8g_SetFont(&u8g,u8g_font_04b_03b);//set current font
// u8g_DrawStr(&u8g, 2, 12, "Hallo!");//write string - you set coordinates and string
// u8g_DrawBox(&u8g, 30, 30, 35, 35);//draw some box
/* while(HAL_I2C_Master_Transmit(&hi2c1, 0x3C,(uint8_t*) outbuffer, sizeof(outbuffer), (uint32_t)1000)!= HAL_OK)
{
if (HAL_I2C_GetError(&hi2c1) != HAL_I2C_ERROR_AF)
{
// HAL_printf("i2C Error\n\r");
GPIOA -> ODR ^= LD2_Pin;
}
}
while (HAL_I2C_GetState(&hi2c1) != HAL_I2C_STATE_READY)
{
}
*/
GPIOA -> ODR ^= LD2_Pin;
HAL_Delay(2000);
}
/* USER CODE END 3 */
}
/* I2C1 init function */
static void MX_I2C1_Init(void)
{
hi2c1.Instance = I2C1;
hi2c1.Init.ClockSpeed = 100000;
hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
hi2c1.Init.OwnAddress1 = 0;
hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c1.Init.OwnAddress2 = 0;
hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if (HAL_I2C_Init(&hi2c1) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
}
stm32f1xx_hal_msp.c
void HAL_I2C_MspInit(I2C_HandleTypeDef* hi2c)
{
GPIO_InitTypeDef GPIO_InitStruct;
if(hi2c->Instance==I2C1)
{
/* USER CODE BEGIN I2C1_MspInit 0 */
/* USER CODE END I2C1_MspInit 0 */
/**I2C1 GPIO Configuration
PB6 ------> I2C1_SCL
PB7 ------> I2C1_SDA
*/
GPIO_InitStruct.Pin = GPIO_PIN_6|GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* Peripheral clock enable */
__HAL_RCC_I2C1_CLK_ENABLE();
/* USER CODE BEGIN I2C1_MspInit 1 */
/* USER CODE END I2C1_MspInit 1 */
}
}
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