Ja ich denke schon:
Main.c
stm32f1xx_hal_msp.cCode:/* 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__); } }
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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