void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle) { GPIO_InitTypeDef GPIO_InitStruct; if(i2cHandle->Instance==I2C1) { /* USER CODE BEGIN I2C1_MspInit 0 */ /* USER CODE END I2C1_MspInit 0 */ /**I2C1 GPIO Configuration PB8 ------> I2C1_SCL PB9 ------> I2C1_SDA */ GPIO_InitStruct.Pin = GPIO_PIN_8|GPIO_PIN_9; GPIO_InitStruct.Mode = GPIO_MODE_AF_OD; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); __HAL_AFIO_REMAP_I2C1_ENABLE(); /* Peripheral clock enable */ __HAL_RCC_I2C1_CLK_ENABLE(); /* Peripheral interrupt init */ HAL_NVIC_SetPriority(I2C1_EV_IRQn, 0, 0); HAL_NVIC_EnableIRQ(I2C1_EV_IRQn); HAL_NVIC_SetPriority(I2C1_ER_IRQn, 0, 0); HAL_NVIC_EnableIRQ(I2C1_ER_IRQn); /* USER CODE BEGIN I2C1_MspInit 1 */ /* USER CODE END I2C1_MspInit 1 */ } }
void Init_BMP085 (void) { GPIO_InitTypeDef GPIO_InitStruct; __I2C1_CLK_ENABLE(); __GPIOB_CLK_ENABLE(); __HAL_RCC_AFIO_CLK_ENABLE(); // Init I2C GPIO_InitStruct.Pin = GPIO_PIN_9|GPIO_PIN_8; GPIO_InitStruct.Mode = GPIO_MODE_AF_OD; GPIO_InitStruct.Pull = GPIO_PULLUP; GPIO_InitStruct.Speed = GPIO_SPEED_HIGH; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); __HAL_AFIO_REMAP_I2C1_ENABLE(); hi2c2.Instance = I2C1; hi2c2.Init.ClockSpeed = 100000; hi2c2.Init.DutyCycle = I2C_DUTYCYCLE_2; hi2c2.Init.OwnAddress1 = 0; hi2c2.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT; hi2c2.Init.DualAddressMode = I2C_DUALADDRESS_DISABLED; hi2c2.Init.OwnAddress2 = 0; hi2c2.Init.GeneralCallMode = I2C_GENERALCALL_DISABLED; hi2c2.Init.NoStretchMode = I2C_NOSTRETCH_DISABLED; HAL_I2C_Init(&hi2c2); I2Cdev_hi2c = &hi2c2; // init of i2cdevlib. // You can select other i2c device anytime and // call the same driver functions on other sensors while(!BMP085_testConnection()) ; BMP085_initialize(); }
/** * Configure pin (input, output, alternate function or analog) + output speed + AF */ void pin_function(PinName pin, int data) { MBED_ASSERT(pin != (PinName)NC); // Get the pin informations uint32_t mode = STM_PIN_MODE(data); uint32_t pupd = STM_PIN_PUPD(data); uint32_t afnum = STM_PIN_AFNUM(data); uint32_t port_index = STM_PORT(pin); uint32_t pin_index = STM_PIN(pin); // Enable GPIO clock uint32_t gpio_add = Set_GPIO_Clock(port_index); GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add; // Enable AFIO clock __HAL_RCC_AFIO_CLK_ENABLE(); // Configure Alternate Function // Warning: Must be done before the GPIO is initialized if (afnum > 0) { switch (afnum) { case 1: // Remap SPI1 __HAL_AFIO_REMAP_SPI1_ENABLE(); break; case 2: // Remap I2C1 __HAL_AFIO_REMAP_I2C1_ENABLE(); break; case 3: // Remap USART1 __HAL_AFIO_REMAP_USART1_ENABLE(); break; case 4: // Remap USART2 __HAL_AFIO_REMAP_USART2_ENABLE(); break; case 5: // Partial Remap USART3 __HAL_AFIO_REMAP_USART3_PARTIAL(); break; case 6: // Partial Remap TIM1 __HAL_AFIO_REMAP_TIM1_PARTIAL(); break; case 7: // Partial Remap TIM3 __HAL_AFIO_REMAP_TIM3_PARTIAL(); break; case 8: // Full Remap TIM2 __HAL_AFIO_REMAP_TIM2_ENABLE(); break; case 9: // Full Remap TIM3 __HAL_AFIO_REMAP_TIM3_ENABLE(); break; default: break; } } // Configure GPIO GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.Pin = (uint32_t)(1 << pin_index); GPIO_InitStructure.Mode = gpio_mode[mode]; GPIO_InitStructure.Pull = pupd; GPIO_InitStructure.Speed = GPIO_SPEED_HIGH; HAL_GPIO_Init(gpio, &GPIO_InitStructure); // Disconnect JTAG-DP + SW-DP signals. // Warning: Need to reconnect under reset if ((pin == PA_13) || (pin == PA_14)) { __HAL_AFIO_REMAP_SWJ_DISABLE(); // JTAG-DP Disabled and SW-DP Disabled } if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) { __HAL_AFIO_REMAP_SWJ_NOJTAG(); // JTAG-DP Disabled and SW-DP enabled } }