diff options
Diffstat (limited to 'libopencm3/lib/usb/usb_f107.c')
| -rw-r--r-- | libopencm3/lib/usb/usb_f107.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/libopencm3/lib/usb/usb_f107.c b/libopencm3/lib/usb/usb_f107.c new file mode 100644 index 0000000..32aecab --- /dev/null +++ b/libopencm3/lib/usb/usb_f107.c @@ -0,0 +1,91 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2011 Gareth McMullin <gareth@blacksphere.co.nz> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <string.h> +#include <libopencm3/cm3/common.h> +#include <libopencm3/stm32/tools.h> +#include <libopencm3/stm32/otg_fs.h> +#include <libopencm3/usb/usbd.h> +#include "usb_private.h" +#include "usb_fx07_common.h" + +/* Receive FIFO size in 32-bit words. */ +#define RX_FIFO_SIZE 128 + +static usbd_device *stm32f107_usbd_init(void); + +static struct _usbd_device usbd_dev; + +const struct _usbd_driver stm32f107_usb_driver = { + .init = stm32f107_usbd_init, + .set_address = stm32fx07_set_address, + .ep_setup = stm32fx07_ep_setup, + .ep_reset = stm32fx07_endpoints_reset, + .ep_stall_set = stm32fx07_ep_stall_set, + .ep_stall_get = stm32fx07_ep_stall_get, + .ep_nak_set = stm32fx07_ep_nak_set, + .ep_write_packet = stm32fx07_ep_write_packet, + .ep_read_packet = stm32fx07_ep_read_packet, + .poll = stm32fx07_poll, + .disconnect = stm32fx07_disconnect, + .base_address = USB_OTG_FS_BASE, + .set_address_before_status = 1, + .rx_fifo_size = RX_FIFO_SIZE, +}; + +/** Initialize the USB device controller hardware of the STM32. */ +static usbd_device *stm32f107_usbd_init(void) +{ + OTG_FS_GINTSTS = OTG_FS_GINTSTS_MMIS; + + OTG_FS_GUSBCFG |= OTG_FS_GUSBCFG_PHYSEL; + /* Enable VBUS sensing in device mode and power down the PHY. */ + OTG_FS_GCCFG |= OTG_FS_GCCFG_VBUSBSEN | OTG_FS_GCCFG_PWRDWN; + + /* Wait for AHB idle. */ + while (!(OTG_FS_GRSTCTL & OTG_FS_GRSTCTL_AHBIDL)); + /* Do core soft reset. */ + OTG_FS_GRSTCTL |= OTG_FS_GRSTCTL_CSRST; + while (OTG_FS_GRSTCTL & OTG_FS_GRSTCTL_CSRST); + + /* Force peripheral only mode. */ + OTG_FS_GUSBCFG |= OTG_FS_GUSBCFG_FDMOD | OTG_FS_GUSBCFG_TRDT_MASK; + + /* Full speed device. */ + OTG_FS_DCFG |= OTG_FS_DCFG_DSPD; + + /* Restart the PHY clock. */ + OTG_FS_PCGCCTL = 0; + + OTG_FS_GRXFSIZ = stm32f107_usb_driver.rx_fifo_size; + usbd_dev.fifo_mem_top = stm32f107_usb_driver.rx_fifo_size; + + /* Unmask interrupts for TX and RX. */ + OTG_FS_GAHBCFG |= OTG_FS_GAHBCFG_GINT; + OTG_FS_GINTMSK = OTG_FS_GINTMSK_ENUMDNEM | + OTG_FS_GINTMSK_RXFLVLM | + OTG_FS_GINTMSK_IEPINT | + OTG_FS_GINTMSK_USBSUSPM | + OTG_FS_GINTMSK_WUIM | + OTG_FS_GINTMSK_SOFM; + OTG_FS_DAINTMSK = 0xF; + OTG_FS_DIEPMSK = OTG_FS_DIEPMSK_XFRCM; + + return &usbd_dev; +} |