lora-irrigation/si_usb.c

/*
 * Code for initalizing USB CDC via the SYSINIT mechanism.
 */

#include <sysinit.h>

#include <stm32f1xx_hal_gpio.h>
#include <stm32f1xx_hal_pcd.h>

#include <usb_device.h>

static void
usb_cdc_init(const void *foo)
{
	/*
	 * pretend that the device was newly plugged in
	 * see: https://stackoverflow.com/a/67336535
	 */

	GPIO_InitTypeDef GPIO_InitStructure;

	GPIO_InitStructure = (GPIO_InitTypeDef){
		.Pin = GPIO_PIN_11|GPIO_PIN_12,
		.Mode = GPIO_MODE_OUTPUT_PP,
		.Pull = GPIO_PULLDOWN,
		.Speed = GPIO_SPEED_HIGH,
	};

	__HAL_RCC_GPIOA_CLK_ENABLE();
	HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);
	//HAL_GPIO_WritePin(GPIOA, GPIO_PIN_11, GPIO_PIN_RESET);
	HAL_GPIO_WritePin(GPIOA, GPIO_PIN_12, GPIO_PIN_RESET);

	HAL_Delay(10);

	MX_USB_DEVICE_Init();
}

extern PCD_HandleTypeDef hpcd_USB_FS;


void
USB_LP_IRQHandler(void)
{

	HAL_PCD_IRQHandler(&hpcd_USB_FS);
}

SYSINIT(usb_cdc_init, SI_SUB_CONSOLE, SI_ORDER_FIRST, usb_cdc_init, NULL);