fw/atspi/: added application with basic EP0 protocol

fw/atspi/Makefile

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+#
+# atspi/Makefile - Makefile for USB to SPI translator (for AT86RF230)
+#
+# Written 2010 by Werner Almesberger
+# Copyright 2010 Werner Almesberger
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+
+
+MAIN = atspi
+OBJS = $(MAIN) usb descr version ep0
+
+F32XBASE = ../../../f32xbase
+
+include $(F32XBASE)/fw/common/Makefile.system
+include $(F32XBASE)/fw/common/Makefile.common
+
+CFLAGS += -I../include
+LDFLAGS += --code-size $(PAYLOAD_SIZE) --code-loc $(PAYLOAD_START)
+
+USB_ID = $(shell \
+  `( echo '#include "config.h"'; echo USB_VENDOR:USB_PRODUCT; ) | \
+  cpp | sed '/^ *$/d;/^#/d')
+
+.PHONY:		dfu
+
+dfu:
+		dfu-util -d $(USB_ID) -D $(MAIN).bin

fw/atspi/atspi.c

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+/*
+ * atspi/atspi.c - ATSPIinitialization and main loop
+ *
+ * Written 2008-2010 by Werner Almesberger
+ * Copyright 2008-2010 Werner Almesberger
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+
+#include "regs.h"
+#include "io.h"
+#include "usb.h"
+#include "atspi/ep0.h"
+#include "version.h"
+
+
+void main(void)
+{
+	usb_init();
+	ep0_init();
+
+	while (1) {
+		usb_poll();
+	}
+}

fw/atspi/descr.c

@@ -0,0 +1,88 @@
+/*
+ * atspi/descr.c - USB descriptors
+ *
+ * Written 2008-2010 by Werner Almesberger
+ * Copyright 2008-2010 Werner Almesberger
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+
+#include "usb.h"
+
+#include "config.h"
+
+
+/*
+ * Device descriptor
+ */
+
+const uint8_t device_descriptor[18] = {
+	18,			/* bLength */
+	USB_DT_DEVICE,		/* bDescriptorType */
+	LE(0x200),		/* bcdUSB */
+	USB_CLASS_VENDOR_SPEC,	/* bDeviceClass */
+	0x00,			/* bDeviceSubClass */
+	0x00,			/* bDeviceProtocol */
+	EP0_SIZE,		/* bMaxPacketSize */
+	LE(USB_VENDOR),		/* idVendor */
+	LE(USB_PRODUCT),	/* idProduct */
+	LE(0x0001),		/* bcdDevice */
+	0,			/* iManufacturer */
+	0,			/* iProduct */
+	0,			/* iSerialNumber */
+	1			/* bNumConfigurations */
+};
+
+
+/*
+ * Our configuration
+ *
+ * While in DFU mode, we're always bus-powered.
+ */
+
+const uint8_t config_descriptor[] = {
+	9,			/* bLength */
+	USB_DT_CONFIG,		/* bDescriptorType */
+	LE(9+9+7+7),		/* wTotalLength */
+	1,			/* bNumInterfaces */
+	1,			/* bConfigurationValue (> 0 !) */
+	0,			/* iConfiguration */
+//	USB_ATTR_SELF_POWERED | USB_ATTR_BUS_POWERED,
+	USB_ATTR_BUS_POWERED,	/* bmAttributes */
+	15,			/* bMaxPower */
+
+	/* Interface #0 */
+
+	9,			/* bLength */
+	USB_DT_INTERFACE,	/* bDescriptorType */
+	0,			/* bInterfaceNumber */
+	0,			/* bAlternateSetting */
+	2,			/* bNumEndpoints */
+	USB_CLASS_VENDOR_SPEC,	/* bInterfaceClass */
+	0,			/* bInterfaceSubClass */
+	0,			/* bInterfaceProtocol */
+	0,			/* iInterface */
+
+	/* EP OUT */
+
+	7,			/* bLength */
+	USB_DT_ENDPOINT,	/* bDescriptorType */
+	0x01,			/* bEndPointAddress */
+	0x02,			/* bmAttributes (bulk) */
+	LE(EP1_SIZE),		/* wMaxPacketSize */
+	0,			/* bInterval */
+
+	/* EP IN */
+
+	7,			/* bLength */
+	USB_DT_ENDPOINT,	/* bDescriptorType */
+	0x81,			/* bEndPointAddress */
+	0x02,			/* bmAttributes (bulk) */
+	LE(EP1_SIZE),		/* wMaxPacketSize */
+	0,			/* bInterval */
+
+};

fw/atspi/ep0.c

@@ -0,0 +1,77 @@
+/*
+ * atspi/ep0.c - EP0 extension protocol
+ *
+ * Written 2008-2010 by Werner Almesberger
+ * Copyright 2008-2010 Werner Almesberger
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+
+#include <stdint.h>
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+#include "regs.h"
+//#include "uart.h"
+#include "usb.h"
+#include "atspi/ep0.h"
+#include "version.h"
+
+
+#define debug(...)
+#define error(...)
+
+
+static const uint8_t id[] = { EP0ATSPI_MAJOR, EP0ATSPI_MINOR, HW_TYPE };
+
+
+static __bit my_setup(struct setup_request *setup) __reentrant
+{
+	uint8_t size;
+
+	switch (setup->bmRequestType | setup->bRequest << 8) {
+	case ATSPI_FROM_DEV(ATSPI_ID):
+		debug("ATSPI_ID\n");
+		if (setup->wLength > 3)
+			return 0;
+		usb_send(&ep0, id, setup->wLength, NULL, NULL);
+		return 1;
+	case ATSPI_FROM_DEV(ATSPI_BUILD_NUMBER):
+		debug("ATSPI_BUILD_NUMBER\n");
+		if (setup->wLength > 2)
+			return 0;
+		usb_send(&ep0, (void *) &build_number, setup->wLength,
+		    NULL, NULL);
+		return 1;
+	case ATSPI_FROM_DEV(ATSPI_BUILD_DATE):
+		debug("ATSPI_BUILD_DATE\n");
+		for (size = 0; build_date[size]; size++);
+		if (size > EP1_SIZE)
+			return 0;
+		if (size > setup->wLength)
+			return 0;
+		usb_send(&ep0, build_date, size, NULL, NULL);
+		return 1;
+	case ATSPI_TO_DEV(ATSPI_RESET):
+		debug("ATSPI_RESET\n");
+		RSTSRC = SWRSF;
+		while (1);
+
+	default:
+		error("Unrecognized SETUP: 0x%02x 0x%02x ...\n",
+		    setup->bmRequestType, setup->bRequest);
+		return 0;
+	}
+}
+
+
+void ep0_init(void)
+{
+	user_setup = my_setup;
+}

fw/atspi/io.h

@@ -0,0 +1,34 @@
+/*
+ * atspi/io.h - I/O pin assignment
+ *
+ * Written 2010 by Werner Almesberger
+ * Copyright 2010 Werner Almesberger
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+
+#ifndef IO_H
+#define IO_H
+
+/* Diagnostic LED */
+
+#define	LED	P0_1
+
+/* SPI */
+
+#define	MOSI	P2_2
+#define	MISO	P2_5
+#define	SCLK	P2_4
+#define	nSS	P2_3
+
+/* Miscellaneous RF signals */
+
+#define	nRST_RF	P2_0
+#define	IRQ_RF	P0_2
+#define	SLP_TR	P2_1
+
+#endif /* !IO_H */

fw/include/atspi/ep0.h

@@ -0,0 +1,63 @@
+/*
+ * include/atspi/ep0.h - EP0 extension protocol
+ *
+ * Written 2008-2010 by Werner Almesberger
+ * Copyright 2008-2010 Werner Almesberger
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+
+#ifndef EP0_H
+#define EP0_H
+
+/*
+ * Direction	bRequest		wValue		wIndex	wLength
+ *
+ * ->host	ATSPI_ID		0		0	3
+ * host->	ATSPI_RESET		0		0	0
+ * ->host	ATSPI_BUILD_NUMBER	-		-	2
+ * ->host	ATSPI_BUILD_DATE	-		-	#bytes
+ */
+
+/*
+ * EP0 protocol:
+ *
+ * 0.0	initial release
+ */
+
+#define EP0ATSPI_MAJOR	0	/* EP0 protocol, major revision */
+#define EP0ATSPI_MINOR	0	/* EP0 protocol, minor revision */
+
+#define	HW_TYPE_100813	0	/* 100813 */
+
+
+/*
+ * bmRequestType:
+ *
+ * D7 D6..5 D4...0
+ * |  |     |
+ * direction (0 = host->dev)
+ *    type (2 = vendor)
+ *          recipient (0 = device)
+ */
+
+
+#define	ATSPI_TO_DEV(req)	(0x40 | (req) << 8)
+#define	ATSPI_FROM_DEV(req)	(0xc0 | (req) << 8)
+
+
+enum atspi_requests {
+	ATSPI_ID			= 0x00,
+	ATSPI_RESET,
+	ATSPI_BUILD_NUMBER,
+	ATSPI_BUILD_DATE,
+};
+
+
+void ep0_init(void);
+
+#endif /* !EP0_H */