[stm32f429i-discovery] Added usb mass storage example.

2015-01-14 18:40:22 -08:00
parent 92c228bc63
commit 1346cd0156
5 changed files with 372 additions and 0 deletions
--- a/examples/stm32/f4/stm32f429i-discovery/usb_msc/msc.c
+++ b/examples/stm32/f4/stm32f429i-discovery/usb_msc/msc.c
@@ -0,0 +1,127 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2013 Weston Schmidt <weston_schmidt@alumni.purdue.edu>
+ * Copyright (C) 2013 Pavol Rusnak <stick@gk2.sk>
+ *
+ * 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 <stdlib.h>
+
+#include <libopencm3/stm32/rcc.h>
+#include <libopencm3/stm32/gpio.h>
+#include <libopencm3/usb/usbd.h>
+#include <libopencm3/usb/msc.h>
+
+#include "ramdisk.h"
+
+static const struct usb_device_descriptor dev_descr = {
+	.bLength = USB_DT_DEVICE_SIZE,
+	.bDescriptorType = USB_DT_DEVICE,
+	.bcdUSB = 0x0110,
+	.bDeviceClass = 0,
+	.bDeviceSubClass = 0,
+	.bDeviceProtocol = 0,
+	.bMaxPacketSize0 = 64,
+	.idVendor = 0x0483,
+	.idProduct = 0x5741,
+	.bcdDevice = 0x0200,
+	.iManufacturer = 1,
+	.iProduct = 2,
+	.iSerialNumber = 3,
+	.bNumConfigurations = 1,
+};
+
+static const struct usb_endpoint_descriptor msc_endp[] = {{
+	.bLength = USB_DT_ENDPOINT_SIZE,
+	.bDescriptorType = USB_DT_ENDPOINT,
+	.bEndpointAddress = 0x01,
+	.bmAttributes = USB_ENDPOINT_ATTR_BULK,
+	.wMaxPacketSize = 64,
+	.bInterval = 0,
+}, {
+	.bLength = USB_DT_ENDPOINT_SIZE,
+	.bDescriptorType = USB_DT_ENDPOINT,
+	.bEndpointAddress = 0x82,
+	.bmAttributes = USB_ENDPOINT_ATTR_BULK,
+	.wMaxPacketSize = 64,
+	.bInterval = 0,
+}};
+
+static const struct usb_interface_descriptor msc_iface[] = {{
+	.bLength = USB_DT_INTERFACE_SIZE,
+	.bDescriptorType = USB_DT_INTERFACE,
+	.bInterfaceNumber = 0,
+	.bAlternateSetting = 0,
+	.bNumEndpoints = 2,
+	.bInterfaceClass = USB_CLASS_MSC,
+	.bInterfaceSubClass = USB_MSC_SUBCLASS_SCSI,
+	.bInterfaceProtocol = USB_MSC_PROTOCOL_BBB,
+	.iInterface = 0,
+	.endpoint = msc_endp,
+	.extra = NULL,
+	.extralen = 0
+}};
+
+static const struct usb_interface ifaces[] = {{
+	.num_altsetting = 1,
+	.altsetting = msc_iface,
+}};
+
+static const struct usb_config_descriptor config_descr = {
+	.bLength = USB_DT_CONFIGURATION_SIZE,
+	.bDescriptorType = USB_DT_CONFIGURATION,
+	.wTotalLength = 0,
+	.bNumInterfaces = 1,
+	.bConfigurationValue = 1,
+	.iConfiguration = 0,
+	.bmAttributes = 0x80,
+	.bMaxPower = 0x32,
+	.interface = ifaces,
+};
+
+static const char *usb_strings[] = {
+	"Black Sphere Technologies",
+	"MSC Demo",
+	"DEMO",
+};
+
+static usbd_device *msc_dev;
+/* Buffer to be used for control requests. */
+static uint8_t usbd_control_buffer[128];
+
+int main(void)
+{
+	rcc_clock_setup_hse_3v3(&hse_8mhz_3v3[CLOCK_3V3_120MHZ]);
+
+	rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPBEN);
+	rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_OTGHSEN);
+
+	gpio_mode_setup(GPIOB, GPIO_MODE_AF, GPIO_PUPD_NONE,
+			GPIO13 | GPIO14 | GPIO15);
+	gpio_set_af(GPIOB, GPIO_AF12, GPIO13 | GPIO14 | GPIO15);
+
+	msc_dev = usbd_init(&otghs_usb_driver, &dev_descr, &config_descr,
+			    usb_strings, 3,
+			    usbd_control_buffer, sizeof(usbd_control_buffer));
+
+	ramdisk_init();
+	usb_msc_init(msc_dev, 0x82, 64, 0x01, 64, "VendorID", "ProductID",
+		"0.00", ramdisk_blocks(), ramdisk_read, ramdisk_write);
+
+	for (;;) {
+		usbd_poll(msc_dev);
+	}
+}