STM32 HAL API functions (1) - basic

HAL stands for  Hardware Abstraction Layer.  It's generic API by ST Microtronics to program their MCUs.

/* delay */

HAL_Delay(1000);

/* GPIO */

HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_5);

HAL_GPIO_WritePin(GPIOA, GPIO_PIN_10, GPIO_PIN_SET);    // set HI

HAL_GPIO_WritePin(GPIOA, GPIO_PIN_10, GPIO_PIN_RESET);     // set LO

/* UART */

HAL_UART_Transmit(&huart2, (uint8_t*)msg, strlen(msg), HAL_MAX_DELAY);

/* I2C */     // example: TMP102

HAL_StatusTypeDef   ret;       // expect HAL_OK if operation is successful

// set request argument in buf[0], then:

ret = HAL_I2C_Master_Transit(&h12c1, TMP102_ADR, buf, 1, HAL_MAX_DELAY);

ret = HAL_I2C_Master_Receive(&h12c1, TMP102_ADR, buf, 2, HAL_MAX_DELAY);

/* ADC */

HAL_ADC_Start(&hadc1);

HAL_ADC_PollForConversion(&hadc1, HAL_MAX_DELAY);

uint16_t     raw;

raw = HAL_ADC_GetValue(&hadc1);