void sdcard_init(void) { // invalidate the sd_handle sd_handle.Instance = NULL; // configure SD GPIO // we do this here an not in HAL_SD_MspInit because it apparently // makes it more robust to have the pins always pulled high // Note: the mp_hal_pin_config function will configure the GPIO in // fast mode which can do up to 50MHz. This should be plenty for SDIO // which clocks up to 25MHz maximum. #if defined(MICROPY_HW_SDMMC2_CK) // Use SDMMC2 peripheral with pins provided by the board's config mp_hal_pin_config_alt_static(MICROPY_HW_SDMMC2_CK, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_UP, STATIC_AF_SDMMC2_CK); mp_hal_pin_config_alt_static(MICROPY_HW_SDMMC2_CMD, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_UP, STATIC_AF_SDMMC2_CMD); mp_hal_pin_config_alt_static(MICROPY_HW_SDMMC2_D0, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_UP, STATIC_AF_SDMMC2_D0); mp_hal_pin_config_alt_static(MICROPY_HW_SDMMC2_D1, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_UP, STATIC_AF_SDMMC2_D1); mp_hal_pin_config_alt_static(MICROPY_HW_SDMMC2_D2, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_UP, STATIC_AF_SDMMC2_D2); mp_hal_pin_config_alt_static(MICROPY_HW_SDMMC2_D3, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_UP, STATIC_AF_SDMMC2_D3); #else // Default SDIO/SDMMC1 config mp_hal_pin_config_alt_static(MICROPY_HW_SDMMC_D0, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_UP, STATIC_AF_SDMMC_D0); mp_hal_pin_config_alt_static(MICROPY_HW_SDMMC_D1, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_UP, STATIC_AF_SDMMC_D1); mp_hal_pin_config_alt_static(MICROPY_HW_SDMMC_D2, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_UP, STATIC_AF_SDMMC_D2); mp_hal_pin_config_alt_static(MICROPY_HW_SDMMC_D3, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_UP, STATIC_AF_SDMMC_D3); mp_hal_pin_config_alt_static(MICROPY_HW_SDMMC_CK, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_UP, STATIC_AF_SDMMC_CK); mp_hal_pin_config_alt_static(MICROPY_HW_SDMMC_CMD, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_UP, STATIC_AF_SDMMC_CMD); #endif // configure the SD card detect pin // we do this here so we can detect if the SD card is inserted before powering it on mp_hal_pin_config(MICROPY_HW_SDCARD_DETECT_PIN, MP_HAL_PIN_MODE_INPUT, MICROPY_HW_SDCARD_DETECT_PULL, 0); }
STATIC void servo_init_channel(pyb_servo_obj_t *s) { static const uint8_t channel_table[4] = {TIM_CHANNEL_1, TIM_CHANNEL_2, TIM_CHANNEL_3, TIM_CHANNEL_4}; uint32_t channel = channel_table[s->pin->pin]; // GPIO configuration mp_hal_pin_config(s->pin, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, GPIO_AF2_TIM5); // PWM mode configuration TIM_OC_InitTypeDef oc_init; oc_init.OCMode = TIM_OCMODE_PWM1; oc_init.Pulse = s->pulse_cur; // units of 10us oc_init.OCPolarity = TIM_OCPOLARITY_HIGH; oc_init.OCFastMode = TIM_OCFAST_DISABLE; HAL_TIM_PWM_ConfigChannel(&TIM5_Handle, &oc_init, channel); // start PWM HAL_TIM_PWM_Start(&TIM5_Handle, channel); }
STATIC void adc_init_single(pyb_obj_adc_t *adc_obj) { if (!is_adcx_channel(adc_obj->channel)) { return; } if (ADC_FIRST_GPIO_CHANNEL <= adc_obj->channel && adc_obj->channel <= ADC_LAST_GPIO_CHANNEL) { // Channels 0-16 correspond to real pins. Configure the GPIO pin in ADC mode. const pin_obj_t *pin = pin_adc_table[adc_obj->channel]; mp_hal_pin_config(pin, MP_HAL_PIN_MODE_ADC, MP_HAL_PIN_PULL_NONE, 0); } adcx_init_periph(&adc_obj->handle, ADC_RESOLUTION_12B); #if defined(STM32L4) && defined(ADC_DUALMODE_REGSIMULT_INJECSIMULT) ADC_MultiModeTypeDef multimode; multimode.Mode = ADC_MODE_INDEPENDENT; if (HAL_ADCEx_MultiModeConfigChannel(&adc_obj->handle, &multimode) != HAL_OK) { nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "Can not set multimode on ADC1 channel: %d", adc_obj->channel)); } #endif }
// this function inits the switch GPIO so that it can be used void switch_init0(void) { mp_hal_pin_config(MICROPY_HW_USRSW_PIN, MP_HAL_PIN_MODE_INPUT, MICROPY_HW_USRSW_PULL, 0); }