main.cc

#include "drivers/interrupt.hh"
#include "drivers/interrupt_control.hh"
#include "drivers/leds.hh"
#include "drivers/uart.hh"
#include "stm32mp1xx.h"
#include "system_clk.hh"
#include "usbd_core.h"
#include "usbd_desc.h"
#include "usbd_msc_storage.h"
#include <cstdint>

#include "osd32brk_conf.hh"
#include "stm32disco_conf.hh"

// Uncomment one of these to select your board:
namespace Board = OSD32BRK;
// namespace Board = STM32MP1Disco;

extern PCD_HandleTypeDef hpcd;

void main()
{
	Uart<Board::ConsoleUART> uart;
	uart.write("\r\n\r\nSimple USB MSC Device test\r\n");
	uart.write("Connect a USB cable to a computer\r\n");
	uart.write("You should see a 128MB unformatted drive appear.\r\n");

	Board::GreenLED green1;
	green1.off();

	SystemClocks::init();

	USBD_HandleTypeDef USBD_Device;

	auto init_ok = USBD_Init(&USBD_Device, &MSC_Desc, 0);
	if (init_ok != USBD_OK) {
		uart.write("USB Device failed to initialize!\r\n");
		uart.write("Error code: ");
		uart.write(static_cast<uint32_t>(init_ok));
	}
	InterruptControl::disable_irq(OTG_IRQn);
	InterruptManager::registerISR(OTG_IRQn, [] { HAL_PCD_IRQHandler(&hpcd); });
	InterruptControl::set_irq_priority(OTG_IRQn, 0, 0);
	InterruptControl::enable_irq(OTG_IRQn);

	USBD_RegisterClass(&USBD_Device, USBD_MSC_CLASS);
	USBD_MSC_RegisterStorage(&USBD_Device, &USBD_MSC_fops);
	USBD_Start(&USBD_Device);

	// Blink green1 light at 1Hz
	uint32_t last_tm = 0;
	bool led_state = false;
	while (1) {
		uint32_t tm = HAL_GetTick();
		if (tm > (last_tm + 500)) {
			last_tm = tm;
			if (led_state) {
				green1.off();
			} else {
				green1.on();
			}
			led_state = !led_state;
		}
	}
}