Должно работать. Не пойму, почему этого не происходит. Осциллом вижу посылки данных. Ножки программно подтянуты к питанию.
Задача простая, хотя бы при приеме чего-либо по i2c, инкрементировать переменную test. Идеально было бы положить что передали, в массив slave_rx_buff
Код
I2C_HandleTypeDef hi2c1;
I2C_HandleTypeDef hi2c2;
/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
uint8_t master_tx_buff [10] = {2,2,2,2,2,2,2,2,2,2};
uint8_t slave_rx_buff [10];
uint8_t test;
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_I2C1_Init(void);
static void MX_I2C2_Init(void);
/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/
/* 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();
/* Configure the system clock */
SystemClock_Config();
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_I2C1_Init();
MX_I2C2_Init();
/* USER CODE BEGIN 2 */
//mainLogic();
HAL_I2C_Slave_Receive_IT(&hi2c2, slave_rx_buff, 10);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
HAL_I2C_Master_Transmit(&hi2c1, 112, master_tx_buff, 10, 1000);
HAL_GPIO_TogglePin(GPIOB, Green_led_Pin);
HAL_Delay(300);
//mainLogic();
}
/* USER CODE END 3 */
}
/** System Clock Configuration
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_ClkInitTypeDef RCC_ClkInitStruct;
__PWR_CLK_ENABLE();
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL12;
RCC_OscInitStruct.PLL.PLLDIV = RCC_PLL_DIV3;
HAL_RCC_OscConfig(&RCC_OscInitStruct);
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1);
HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
/* SysTick_IRQn interrupt configuration */
HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}
/* I2C1 init function */
void MX_I2C1_Init(void)
{
hi2c1.Instance = I2C1;
hi2c1.Init.ClockSpeed = 400000;
hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_16_9;
hi2c1.Init.OwnAddress1 = 0;
hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLED;
hi2c1.Init.OwnAddress2 = 0;
hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLED;
hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLED;
HAL_I2C_Init(&hi2c1);
}
/* I2C2 init function */
void MX_I2C2_Init(void)
{
hi2c2.Instance = I2C2;
hi2c2.Init.ClockSpeed = 400000;
hi2c2.Init.DutyCycle = I2C_DUTYCYCLE_16_9;
hi2c2.Init.OwnAddress1 = 224;
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);
}
/** Configure pins as
* Analog
* Input
* Output
* EVENT_OUT
* EXTI
*/
void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* GPIO Ports Clock Enable */
__GPIOH_CLK_ENABLE();
__GPIOB_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOB, Blue_led_Pin|Green_led_Pin, GPIO_PIN_RESET);
/*Configure GPIO pins : Blue_led_Pin Green_led_Pin */
GPIO_InitStruct.Pin = Blue_led_Pin|Green_led_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_VERY_LOW;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
}
/* USER CODE BEGIN 4 */
void HAL_I2C_SlaveRxCpltCallback(I2C_HandleTypeDef *I2cHandle)
{
test++;
/* Turn LED6 on: Transfer in reception process is correct */
// BSP_LED_On(LED6);
}
/* USER CODE END 4 */
решил проблему- адрес надо было при обращении
Код
HAL_I2C_Master_Transmit(&hi2c1, 224, master_tx_buff, 10, 1000);
в два раза больший выставлять.
Хотя, из примеров на ютубе, делают на HAL без сдвига адреса.
I2C, STM32, HAL
Apr 27 2016, 14:09
