81 lines
2.3 KiB
C
81 lines
2.3 KiB
C
/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2022 Rachel Mant <git@dragonmux.network>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <libopencm3/cm3/nvic.h>
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#include <libopencm3/cm3/scs.h>
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#include <libopencm3/cm3/scb.h>
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#include <libopencm3/stm32/gpio.h>
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#include <libopencm3/stm32/rcc.h>
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#include <libopencm3/stm32/exti.h>
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#include <stdio.h>
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#include <stdbool.h>
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#include "usb-gadget0.h"
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#define ER_DEBUG
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#ifdef ER_DEBUG
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#define ER_DPRINTF(fmt, ...) \
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do { printf(fmt, ## __VA_ARGS__); } while (0)
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#else
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#define ER_DPRINTF(fmt, ...) \
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do { } while (0)
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#endif
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#define LED_PORT GPIOB
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#define LED_0 GPIO2
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#define LED_1 GPIO10
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#define LED_2 GPIO11
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#define IRQ_PRI_USB_VBUS (14 << 4)
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int main(void)
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{
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rcc_periph_clock_enable(RCC_GPIOB);
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/* LED to indicate boot process */
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gpio_set_mode(LED_PORT, GPIO_MODE_OUTPUT_2_MHZ, GPIO_CNF_OUTPUT_PUSHPULL, LED_0 | LED_1 | LED_2);
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gpio_clear(LED_PORT, LED_0 | LED_2);
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gpio_set(LED_PORT, LED_1);
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rcc_clock_setup_pll(&rcc_hse_configs[RCC_CLOCK_HSE8_72MHZ]);
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rcc_periph_clock_enable(RCC_USB);
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rcc_periph_clock_enable(RCC_GPIOA);
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/* Configure USB pull-up control */
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gpio_clear(GPIOA, GPIO8);
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gpio_set_mode(GPIOA, GPIO_MODE_INPUT, GPIO_CNF_INPUT_FLOAT, GPIO8);
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/* Make sure we don't accidentally enable the BMP target power */
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gpio_set(GPIOB, GPIO1);
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gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_2_MHZ, GPIO_CNF_OUTPUT_OPENDRAIN, GPIO1);
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usbd_device *usbd_dev = gadget0_init(&st_usbfs_v1_usb_driver, "stm32f1-blackmagic");
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gpio_set(GPIOA, GPIO8);
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gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ, GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
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ER_DPRINTF("bootup complete\n");
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gpio_clear(LED_PORT, LED_1);
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gpio_set(LED_PORT, LED_0);
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while (true) {
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gadget0_run(usbd_dev);
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}
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}
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