mirror of
git://projects.qi-hardware.com/ben-wpan.git
synced 2024-11-26 04:56:16 +02:00
atusb/fw3/: adaptation of the f32xbase USB stack
This commit is contained in:
Werner Almesberger
parent
f4d299d22b
commit
da6677b3d9
108
atusb/fw3/Makefile
Normal file
108
atusb/fw3/Makefile
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@ -0,0 +1,108 @@
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#
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# Makefile - Makefile of the ATUSB firmware
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#
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# Written 2010-2011 by Werner Almesberger
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# Copyright 2010-2011 by Werner Almesberger
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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SHELL = /bin/bash
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NAME = atusb
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CFLAGS = -g -Wall -Wextra -Wshadow -Werror -Wno-unused \
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-Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes
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CHIP=atmega32u2
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AVR_PREFIX = $(BIN_PATH) avr-
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CC = $(AVR_PREFIX)gcc
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OBJCOPY = $(AVR_PREFIX)objcopy
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#OBJDUMP = $(AVR_PREFIX)objdump
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FreakUSB = usb
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#USB_OBJS = usb.o ctrl.o usb_buf.o ep.o hw.o isr.o
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USB_OBJS = usb.o
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OBJS = atusb.o board.o spi.o descr.o ep0.o $(USB_OBJS)
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#vpath %.c $(FreakUSB)/usb/
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#vpath %.c $(FreakUSB)/hw/at90usbxx2/
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vpath %.c usb2/
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CFLAGS += -I../fw/include \
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-Iusb2
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-DNUM_EPS=1
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# -I$(FreakUSB)/usb -I$(FreakUSB)/hw/at90usbxx2 \
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# ----- Verbosity control -----------------------------------------------------
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CC_normal := $(CC)
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BUILD_normal :=
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DEPEND_normal := $(CPP) $(CFLAGS) -MM -MG
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CC_quiet = @echo " CC " $@ && $(CC_normal)
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BUILD_quiet = @echo " BUILD " $@ && $(BUILD_normal)
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DEPEND_quiet = @$(DEPEND_normal)
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ifeq ($(V),1)
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CC = $(CC_normal)
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BUILD = $(BUILD_normal)
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DEPEND = $(DEPEND_normal)
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else
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CC = $(CC_quiet)
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BUILD = $(BUILD_quiet)
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DEPEND = $(DEPEND_quiet)
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endif
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# ----- Rules -----------------------------------------------------------------
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.PHONY: all clean upload prog
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all: $(NAME).bin
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$(NAME).elf: $(OBJS)
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$(CC) $(CFLAGS) -mmcu=$(CHIP) -o $@ $(OBJS)
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%.bin: %.elf
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$(BUILD) $(OBJCOPY) -j .text -j .data -O binary $< $@
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# ----- Cleanup ---------------------------------------------------------------
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clean:
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rm -f $(NAME).bin $(NAME).elf $(OBJS) $(OBJS:.o=.d)
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# ----- Dependencies ----------------------------------------------------------
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%.o: %.c
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$(CC) $(CFLAGS) -mmcu=$(CHIP) -Os -c $<
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$(DEPEND) $< | \
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sed -e \
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'/^\(.*:\)\? */{p;s///;s/ *\\\?$$/ /;s/ */:\n/g;H;}' \
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-e '$${g;p;}' -e d >$*.d; \
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[ "$${PIPESTATUS[*]}" = "0 0" ] || { rm -f $*.d; exit 1; }
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-include $(OBJS:.o=.d)
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# ----- Programming and device control ----------------------------------------
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upload: $(NAME).bin
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scp $(NAME).bin jlime:
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prog:
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ssh jlime avrdude -F -p $(CHIP) -c nanonote_atusb -e \
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-U flash:w:$(NAME).bin:r \
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-U lfuse:w:0x60:m # external clock, slow start-up
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on:
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ssh jlime poke 0x10010318 4
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off:
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ssh jlime poke 0x10010314 4
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reset:
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ssh jlime poke 0x10010318 2048
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ssh jlime poke 0x10010314 2048
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34
atusb/fw3/atusb.c
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34
atusb/fw3/atusb.c
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@ -0,0 +1,34 @@
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#include <stdint.h>
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#include <avr/io.h>
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#define F_CPU 8000000UL
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#include <util/delay.h>
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#include "usb.h"
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#include "board.h"
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#include "spi.h"
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#include "atusb/ep0.h"
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int main(void)
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{
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board_init();
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spi_init();
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reset_rf();
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/* now we should be at 8 MHz */
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#if 0
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led(1);
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_delay_ms(100);
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led(0);
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#endif
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usb_init();
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ep0_init();
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while (1)
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usb_poll();
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}
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54
atusb/fw3/board.h
Normal file
54
atusb/fw3/board.h
Normal file
@ -0,0 +1,54 @@
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#ifndef BOARD_H
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#define BOARD_H
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#include <stdint.h>
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#define LED_PORT B
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#define LED_BIT 6
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#define nRST_RF_PORT C
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#define nRST_RF_BIT 7
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#define SLP_TR_PORT B
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#define SLP_TR_BIT 4
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#define SCLK_PORT D
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#define SCLK_BIT 5
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#define MOSI_PORT D
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#define MOSI_BIT 3
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#define MISO_PORT D
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#define MISO_BIT 2
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#define nSS_PORT D
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#define nSS_BIT 1
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#define IRQ_RF_PORT D
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#define IRQ_RF_BIT 0
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#define SET_2(p, b) PORT##p |= 1 << (b)
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#define CLR_2(p, b) PORT##p &= ~(1 << (b))
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#define IN_2(p, b) DDR##p &= ~(1 << (b))
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#define OUT_2(p, b) DDR##p |= 1 << (b)
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#define PIN_2(p, b) ((PIN##p >> (b)) & 1)
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#define SET_1(p, b) SET_2(p, b)
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#define CLR_1(p, b) CLR_2(p, b)
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#define IN_1(p, b) IN_2(p, b)
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#define OUT_1(p, b) OUT_2(p, b)
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#define PIN_1(p, b) PIN_2(p, b)
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#define SET(n) SET_1(n##_PORT, n##_BIT)
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#define CLR(n) CLR_1(n##_PORT, n##_BIT)
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#define IN(n) IN_1(n##_PORT, n##_BIT)
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#define OUT(n) OUT_1(n##_PORT, n##_BIT)
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#define PIN(n) PIN_1(n##_PORT, n##_BIT)
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void reset_rf(void);
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uint8_t read_irq(void);
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void led(int on);
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void panic(void);
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void board_init(void);
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void rf_init(void);
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void rf_send(const char *s);
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#endif /* !BOARD_H */
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99
atusb/fw3/descr.c
Normal file
99
atusb/fw3/descr.c
Normal file
@ -0,0 +1,99 @@
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/*
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* atspi/descr.c - USB descriptors
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*
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* Written 2008-2011 by Werner Almesberger
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* Copyright 2008-2011 Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include "usb.h"
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#define USB_VENDOR 0x20b7 /* Qi Hardware */
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#define USB_PRODUCT 0x1540 /* ben-wpan atusb */
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#define LE(x) ((uint16_t) (x) & 0xff), ((uint16_t) (x) >> 8)
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/*
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* Device descriptor
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*/
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const uint8_t device_descriptor[18] = {
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18, /* bLength */
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USB_DT_DEVICE, /* bDescriptorType */
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LE(0x200), /* bcdUSB */
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USB_CLASS_VENDOR_SPEC, /* bDeviceClass */
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0x00, /* bDeviceSubClass */
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0x00, /* bDeviceProtocol */
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EP0_SIZE, /* bMaxPacketSize */
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LE(USB_VENDOR), /* idVendor */
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LE(USB_PRODUCT), /* idProduct */
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LE(0x0001), /* bcdDevice */
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0, /* iManufacturer */
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0, /* iProduct */
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0, /* iSerialNumber */
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1 /* bNumConfigurations */
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};
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/*
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* Our configuration
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*
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* We're always bus-powered.
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*/
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const uint8_t config_descriptor[] = {
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9, /* bLength */
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USB_DT_CONFIG, /* bDescriptorType */
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#if 0
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LE(9+9+7+7), /* wTotalLength */
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#else
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LE(9+9), /* wTotalLength */
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#endif
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1, /* bNumInterfaces */
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1, /* bConfigurationValue (> 0 !) */
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0, /* iConfiguration */
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USB_ATTR_BUS_POWERED, /* bmAttributes */
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50/2, /* bMaxPower (50 mA) */
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/* Interface #0 */
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9, /* bLength */
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USB_DT_INTERFACE, /* bDescriptorType */
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0, /* bInterfaceNumber */
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0, /* bAlternateSetting */
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#if 0
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2, /* bNumEndpoints */
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#else
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0,
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#endif
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USB_CLASS_VENDOR_SPEC, /* bInterfaceClass */
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0, /* bInterfaceSubClass */
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0, /* bInterfaceProtocol */
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0, /* iInterface */
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#if 0
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/* EP OUT */
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7, /* bLength */
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USB_DT_ENDPOINT, /* bDescriptorType */
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0x01, /* bEndPointAddress */
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0x02, /* bmAttributes (bulk) */
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LE(EP1_SIZE), /* wMaxPacketSize */
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0, /* bInterval */
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/* EP IN */
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7, /* bLength */
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USB_DT_ENDPOINT, /* bDescriptorType */
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0x81, /* bEndPointAddress */
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0x02, /* bmAttributes (bulk) */
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LE(EP1_SIZE), /* wMaxPacketSize */
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0, /* bInterval */
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#endif
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};
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194
atusb/fw3/ep0.c
Normal file
194
atusb/fw3/ep0.c
Normal file
@ -0,0 +1,194 @@
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/*
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* atspi/ep0.c - EP0 extension protocol
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*
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* Written 2008-2010 by Werner Almesberger
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* Copyright 2008-2010 Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <stdint.h>
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#include <avr/io.h>
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#ifndef NULL
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#define NULL 0
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#endif
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//#include "regs.h"
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//#include "uart.h"
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//#include "usb.h"
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#include "usb.h"
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#include "at86rf230.h"
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#include "atusb/ep0.h"
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//#include "version.h"
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#include "board.h"
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#include "spi.h"
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#define HW_TYPE HW_TYPE_110131
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static const char *build_date = "today";
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static unsigned build_number = 42;
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#define debug(...)
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#define error(...)
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static const uint8_t id[] = { EP0ATUSB_MAJOR, EP0ATUSB_MINOR, HW_TYPE };
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static uint8_t buf[MAX_PSDU+3]; /* command, PHDR, and LQI */
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static uint8_t size;
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static void do_buf_write(void *user)
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{
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uint8_t i;
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spi_begin();
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for (i = 0; i != size; i++)
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spi_send(buf[i]);
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spi_end();
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}
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#define BUILD_OFFSET 7 /* '#' plus "65535" plus ' ' */
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static int my_setup(struct setup_request *setup)
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{
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unsigned tmp;
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uint8_t i;
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switch (setup->bmRequestType | setup->bRequest << 8) {
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case ATUSB_FROM_DEV(ATUSB_ID):
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debug("ATUSB_ID\n");
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if (setup->wLength > 3)
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return 0;
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usb_send(&eps[0], id, setup->wLength, NULL, NULL);
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return 1;
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case ATUSB_FROM_DEV(ATUSB_BUILD):
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debug("ATUSB_BUILD\n");
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tmp = build_number;
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for (i = BUILD_OFFSET-2; tmp; i--) {
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buf[i] = (tmp % 10)+'0';
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tmp /= 10;
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}
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buf[i] = '#';
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buf[BUILD_OFFSET-1] = ' ';
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for (size = 0; build_date[size]; size++)
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buf[BUILD_OFFSET+size] = build_date[size];
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size += BUILD_OFFSET-i;
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if (size > setup->wLength)
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return 0;
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usb_send(&eps[0], buf+i, size, NULL, NULL);
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return 1;
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#ifdef NOTYET
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case ATUSB_TO_DEV(ATUSB_RESET):
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debug("ATUSB_RESET\n");
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RSTSRC = SWRSF;
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while (1);
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#endif
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case ATUSB_TO_DEV(ATUSB_RF_RESET):
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debug("ATUSB_RF_RESET\n");
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reset_rf();
|
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//ep_send_zlp(EP_CTRL);
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return 1;
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|
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case ATUSB_FROM_DEV(ATUSB_POLL_INT):
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debug("ATUSB_POLL_INT\n");
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if (setup->wLength < 1)
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return 0;
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*buf = read_irq();
|
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usb_send(&eps[0], buf, 1, NULL, NULL);
|
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return 1;
|
||||
|
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case ATUSB_TO_DEV(ATUSB_REG_WRITE):
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debug("ATUSB_REG_WRITE\n");
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spi_begin();
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spi_send(AT86RF230_REG_WRITE | setup->wIndex);
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spi_send(setup->wValue);
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spi_end();
|
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//ep_send_zlp(EP_CTRL);
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return 1;
|
||||
case ATUSB_FROM_DEV(ATUSB_REG_READ):
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debug("ATUSB_REG_READ\n");
|
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spi_begin();
|
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spi_send(AT86RF230_REG_READ | setup->wIndex);
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*buf = spi_recv();
|
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spi_end();
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usb_send(&eps[0], buf, 1, NULL, NULL);
|
||||
return 1;
|
||||
|
||||
case ATUSB_TO_DEV(ATUSB_BUF_WRITE):
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debug("ATUSB_BUF_WRITE\n");
|
||||
if (setup->wLength < 1)
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return 0;
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||||
if (setup->wLength > MAX_PSDU)
|
||||
return 0;
|
||||
buf[0] = AT86RF230_BUF_WRITE;
|
||||
buf[1] = setup->wLength;
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||||
size = setup->wLength+2;
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||||
usb_recv(&eps[0], buf+2, setup->wLength, do_buf_write, NULL);
|
||||
return 1;
|
||||
case ATUSB_FROM_DEV(ATUSB_BUF_READ):
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||||
debug("ATUSB_BUF_READ\n");
|
||||
if (setup->wLength < 2) /* PHR+LQI */
|
||||
return 0;
|
||||
if (setup->wLength > MAX_PSDU+2) /* PHR+PSDU+LQI */
|
||||
return 0;
|
||||
spi_begin();
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spi_send(AT86RF230_BUF_READ);
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size = spi_recv();
|
||||
if (size >= setup->wLength)
|
||||
size = setup->wLength-1;
|
||||
for (i = 0; i != size+1; i++)
|
||||
buf[i] = spi_recv();
|
||||
spi_end();
|
||||
usb_send(&eps[0], buf, size+1, NULL, NULL);
|
||||
return 1;
|
||||
|
||||
case ATUSB_TO_DEV(ATUSB_SRAM_WRITE):
|
||||
debug("ATUSB_SRAM_WRITE\n");
|
||||
if (setup->wIndex > SRAM_SIZE)
|
||||
return 0;
|
||||
if (setup->wIndex+setup->wLength > SRAM_SIZE)
|
||||
return 0;
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||||
buf[0] = AT86RF230_SRAM_WRITE;
|
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buf[1] = setup->wIndex;
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||||
size = setup->wLength+2;
|
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usb_recv(&eps[0], buf+2, setup->wLength, do_buf_write, NULL);
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||||
return 1;
|
||||
case ATUSB_TO_DEV(ATUSB_SRAM_READ):
|
||||
debug("ATUSB_SRAM_READ\n");
|
||||
if (setup->wIndex > SRAM_SIZE)
|
||||
return 0;
|
||||
if (setup->wIndex+setup->wLength > SRAM_SIZE)
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||||
return 0;
|
||||
spi_begin();
|
||||
spi_send(AT86RF230_SRAM_READ);
|
||||
spi_send(setup->wIndex);
|
||||
for (i = 0; i != size; i++)
|
||||
buf[i] = spi_recv();
|
||||
spi_end();
|
||||
usb_send(&eps[0], buf, size, NULL, NULL);
|
||||
return 1;
|
||||
|
||||
default:
|
||||
error("Unrecognized SETUP: 0x%02x 0x%02x ...\n",
|
||||
setup->bmRequestType, setup->bRequest);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void ep0_init(void)
|
||||
{
|
||||
user_setup = my_setup;
|
||||
}
|
||||
45
atusb/fw3/spi.c
Normal file
45
atusb/fw3/spi.c
Normal file
@ -0,0 +1,45 @@
|
||||
#include <stdint.h>
|
||||
|
||||
#include <avr/io.h>
|
||||
|
||||
#include "board.h"
|
||||
#include "spi.h"
|
||||
|
||||
|
||||
void spi_begin(void)
|
||||
{
|
||||
CLR(nSS);
|
||||
}
|
||||
|
||||
|
||||
uint8_t spi_io(uint8_t v)
|
||||
{
|
||||
// while (!(UCSR1A & 1 << UDRE1));
|
||||
UDR1 = v;
|
||||
while (!(UCSR1A & 1 << RXC1));
|
||||
return UDR1;
|
||||
}
|
||||
|
||||
|
||||
void spi_end(void)
|
||||
{
|
||||
// while (!(UCSR1A & 1 << TXC1));
|
||||
SET(nSS);
|
||||
}
|
||||
|
||||
|
||||
void spi_init(void)
|
||||
{
|
||||
SET(nSS);
|
||||
OUT(SCLK);
|
||||
OUT(MOSI);
|
||||
OUT(nSS);
|
||||
IN(MISO);
|
||||
|
||||
UBRR1 = 0; /* set bit rate to zero to begin */
|
||||
UCSR1C = 1 << UMSEL11 | 1 << UMSEL10;
|
||||
/* set MSPI, MSB first, SPI data mode 0 */
|
||||
UCSR1B = 1 << RXEN1 | 1 << TXEN1;
|
||||
/* enable receiver and transmitter */
|
||||
UBRR1 = 0; /* reconfirm the bit rate */
|
||||
}
|
||||
15
atusb/fw3/spi.h
Normal file
15
atusb/fw3/spi.h
Normal file
@ -0,0 +1,15 @@
|
||||
#ifndef SPI_H
|
||||
#define SPI_H
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
|
||||
void spi_begin(void);
|
||||
uint8_t spi_io(uint8_t v);
|
||||
void spi_end(void);
|
||||
void spi_init(void);
|
||||
|
||||
#define spi_send(v) (void) spi_io(v)
|
||||
#define spi_recv(v) spi_io(0)
|
||||
|
||||
#endif /* !SPI_H */
|
||||
349
atusb/fw3/usb2/usb.c
Normal file
349
atusb/fw3/usb2/usb.c
Normal file
@ -0,0 +1,349 @@
|
||||
/*
|
||||
* u/usb.c - USB hardware setup and standard device requests
|
||||
*
|
||||
* Written 2008-2011 by Werner Almesberger
|
||||
* Copyright 2008-2011 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.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Known issues:
|
||||
* - no suspend/resume
|
||||
* - EP0-sized packets cause an (otherwise harmless) SUEND at the end of the
|
||||
* packet
|
||||
* - #ifdef hell
|
||||
*/
|
||||
|
||||
/*
|
||||
* This code follows the register read/write sequences from the examples in
|
||||
* SiLabs/MCU/Examples/C8051F326_7/USB_Interrupt/Firmware/F326_USB_Main.c and
|
||||
* SiLabs/MCU/Examples/C8051F326_7/USB_Interrupt/Firmware/F326_USB_ISR.c
|
||||
*
|
||||
* More resources:
|
||||
* http://www.beyondlogic.org/usbnutshell/usb1.htm
|
||||
*/
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
#define F_CPU 8000000UL
|
||||
#include <util/delay.h>
|
||||
|
||||
#include <avr/io.h>
|
||||
#include "usb.h"
|
||||
#include "../board.h"
|
||||
|
||||
|
||||
#ifndef NULL
|
||||
#define NULL 0
|
||||
#endif
|
||||
|
||||
#define NUM_EPS 1
|
||||
|
||||
#if 1
|
||||
extern void panic(void);
|
||||
#define BUG_ON(cond) do { if (cond) panic(); } while (0)
|
||||
#else
|
||||
#define BUG_ON(cond)
|
||||
#endif
|
||||
|
||||
struct ep_descr eps[5];
|
||||
|
||||
int (*user_setup)(struct setup_request *setup);
|
||||
int (*user_get_descriptor)(uint8_t type, uint8_t index,
|
||||
const uint8_t * const *reply, uint8_t *size);
|
||||
void (*user_reset)(void);
|
||||
|
||||
|
||||
static uint8_t addr;
|
||||
|
||||
|
||||
void usb_io(struct ep_descr *ep, enum ep_state state, uint8_t *buf,
|
||||
uint8_t size, void (*callback)(void *user), void *user)
|
||||
{
|
||||
BUG_ON(ep->state);
|
||||
ep->state = state;
|
||||
ep->buf = buf;
|
||||
ep->end = buf+size;
|
||||
ep->callback = callback;
|
||||
ep->user = user;
|
||||
}
|
||||
|
||||
|
||||
static uint16_t usb_read_word(void)
|
||||
{
|
||||
uint8_t low;
|
||||
|
||||
low = UEDATX;
|
||||
return low | UEDATX << 8;
|
||||
}
|
||||
|
||||
|
||||
static int get_descriptor(uint8_t type, uint8_t index, uint16_t length)
|
||||
{
|
||||
const uint8_t *reply;
|
||||
uint8_t size;
|
||||
|
||||
switch (type) {
|
||||
case USB_DT_DEVICE:
|
||||
reply = device_descriptor;
|
||||
size = reply[0];
|
||||
break;
|
||||
case USB_DT_CONFIG:
|
||||
if (index)
|
||||
return 0;
|
||||
reply = config_descriptor;
|
||||
size = reply[2];
|
||||
break;
|
||||
default:
|
||||
if (!user_get_descriptor)
|
||||
return 0;
|
||||
if (!user_get_descriptor(type, index, &reply, &size))
|
||||
return 0;
|
||||
}
|
||||
if (length < size)
|
||||
size = length;
|
||||
usb_send(&eps[0], reply, size, NULL, NULL);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static void enable_addr(void *user)
|
||||
{
|
||||
while (!(UEINTX & (1 << TXINI)));
|
||||
UDADDR = addr | 1 << ADDEN;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Process a SETUP packet. Hardware ensures that length is 8 bytes.
|
||||
*/
|
||||
|
||||
|
||||
static int handle_setup(void)
|
||||
{
|
||||
struct setup_request setup;
|
||||
|
||||
BUG_ON(UEBCLX < 8);
|
||||
|
||||
setup.bmRequestType = UEDATX;
|
||||
setup.bRequest = UEDATX;
|
||||
setup.wValue = usb_read_word();
|
||||
setup.wIndex = usb_read_word();
|
||||
setup.wLength = usb_read_word();
|
||||
|
||||
// UEINTX &= ~(1 << RXSTPI);
|
||||
|
||||
switch (setup.bmRequestType | setup.bRequest << 8) {
|
||||
|
||||
/*
|
||||
* Device request
|
||||
*
|
||||
* See http://www.beyondlogic.org/usbnutshell/usb6.htm
|
||||
*/
|
||||
|
||||
case FROM_DEVICE(GET_STATUS):
|
||||
if (setup.wLength != 2)
|
||||
return 0;
|
||||
usb_send(&eps[0], "\000", 2, NULL, NULL);
|
||||
break;
|
||||
case TO_DEVICE(CLEAR_FEATURE):
|
||||
break;
|
||||
case TO_DEVICE(SET_FEATURE):
|
||||
return 0;
|
||||
case TO_DEVICE(SET_ADDRESS):
|
||||
addr = setup.wValue;
|
||||
UDADDR = addr;
|
||||
usb_send(&eps[0], NULL, 0, enable_addr, NULL);
|
||||
break;
|
||||
case FROM_DEVICE(GET_DESCRIPTOR):
|
||||
if (!get_descriptor(setup.wValue >> 8, setup.wValue,
|
||||
setup.wLength))
|
||||
return 0;
|
||||
break;
|
||||
case TO_DEVICE(SET_DESCRIPTOR):
|
||||
return 0;
|
||||
case FROM_DEVICE(GET_CONFIGURATION):
|
||||
usb_send(&eps[0], "", 1, NULL, NULL);
|
||||
break;
|
||||
case TO_DEVICE(SET_CONFIGURATION):
|
||||
if (setup.wValue != config_descriptor[5])
|
||||
return 0;
|
||||
break;
|
||||
|
||||
/*
|
||||
* Interface request
|
||||
*/
|
||||
|
||||
case FROM_INTERFACE(GET_STATUS):
|
||||
return 0;
|
||||
case TO_INTERFACE(CLEAR_FEATURE):
|
||||
return 0;
|
||||
case TO_INTERFACE(SET_FEATURE):
|
||||
return 0;
|
||||
case FROM_INTERFACE(GET_INTERFACE):
|
||||
return 0;
|
||||
case TO_INTERFACE(SET_INTERFACE):
|
||||
{
|
||||
const uint8_t *interface_descriptor =
|
||||
config_descriptor+9;
|
||||
|
||||
if (setup.wIndex != interface_descriptor[2] ||
|
||||
setup.wValue != interface_descriptor[3])
|
||||
return 0;
|
||||
}
|
||||
break;
|
||||
|
||||
/*
|
||||
* Endpoint request
|
||||
*/
|
||||
|
||||
case FROM_ENDPOINT(GET_STATUS):
|
||||
return 0;
|
||||
case TO_ENDPOINT(CLEAR_FEATURE):
|
||||
return 0;
|
||||
case TO_ENDPOINT(SET_FEATURE):
|
||||
return 0;
|
||||
case FROM_ENDPOINT(SYNCH_FRAME):
|
||||
return 0;
|
||||
|
||||
default:
|
||||
if (!user_setup)
|
||||
return 0;
|
||||
if (!user_setup(&setup))
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (!(setup.bmRequestType & 0x80) && eps[0].state == EP_IDLE)
|
||||
usb_send(&eps[0], NULL, 0, NULL, NULL);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int ep_rx(struct ep_descr *ep)
|
||||
{
|
||||
uint8_t size;
|
||||
|
||||
size = UEBCLX;
|
||||
if (size > ep->end-ep->buf)
|
||||
return 0;
|
||||
while (size--)
|
||||
*ep->buf++ = UEDATX;
|
||||
if (ep->buf == ep->end) {
|
||||
ep->state = EP_IDLE;
|
||||
if (ep->callback)
|
||||
ep->callback(ep->user);
|
||||
if (ep == &eps[0])
|
||||
usb_send(ep, NULL, 0, NULL, NULL);
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static void ep_tx(struct ep_descr *ep)
|
||||
{
|
||||
uint8_t size = ep->end-ep->buf;
|
||||
uint8_t left;
|
||||
|
||||
if (size > ep->size)
|
||||
size = ep->size;
|
||||
for (left = size; left; left--)
|
||||
UEDATX = *ep->buf++;
|
||||
if (size == ep->size)
|
||||
return;
|
||||
ep->state = EP_IDLE;
|
||||
}
|
||||
|
||||
|
||||
static void handle_ep(int n)
|
||||
{
|
||||
struct ep_descr *ep = eps+n;
|
||||
int res;
|
||||
|
||||
UENUM = n;
|
||||
if (UEINTX & (1 << RXSTPI)) {
|
||||
/* @@@ EP_RX. EP_TX: cancel */
|
||||
if (!handle_setup())
|
||||
goto stall;
|
||||
UEINTX &= ~(1 << RXSTPI);
|
||||
}
|
||||
if (UEINTX & (1 << RXOUTI)) {
|
||||
/* @@ EP_TX: cancel */
|
||||
if (ep->state != EP_RX)
|
||||
goto stall;
|
||||
if (!ep_rx(ep))
|
||||
goto stall;
|
||||
// UEINTX &= ~(1 << RXOUTI);
|
||||
UEINTX &= ~(1 << RXOUTI | 1 << FIFOCON);
|
||||
}
|
||||
if (UEINTX & (1 << STALLEDI)) {
|
||||
ep->state = EP_IDLE;
|
||||
UEINTX &= ~(1 << STALLEDI);
|
||||
}
|
||||
if (UEINTX & (1 << TXINI)) {
|
||||
/* @@ EP_RX: cancel */
|
||||
if (ep->state == EP_TX) {
|
||||
ep_tx(ep);
|
||||
UEINTX &= ~(1 << TXINI);
|
||||
if (ep->state == EP_IDLE && ep->callback)
|
||||
ep->callback(ep->user);
|
||||
}
|
||||
}
|
||||
return;
|
||||
|
||||
stall:
|
||||
UEINTX &= ~(1 << RXSTPI | 1 << RXOUTI | 1 << STALLEDI);
|
||||
ep->state = EP_IDLE;
|
||||
UECONX |= 1 << STALLRQ;
|
||||
}
|
||||
|
||||
|
||||
void usb_poll(void)
|
||||
{
|
||||
uint8_t flags, i;
|
||||
|
||||
flags = UEINT;
|
||||
for (i = 0; i != NUM_EPS; i++)
|
||||
if (1 || flags & (1 << i))
|
||||
handle_ep(i);
|
||||
/* @@@ USB bus reset */
|
||||
}
|
||||
|
||||
|
||||
static void ep_init(void)
|
||||
{
|
||||
UENUM = 0;
|
||||
UECONX = (1 << RSTDT) | (1 << EPEN); /* enable */
|
||||
UECFG0X = 0; /* control, direction is ignored */
|
||||
UECFG1X = 3 << EPSIZE0; /* 64 bytes */
|
||||
UECFG1X |= 1 << ALLOC;
|
||||
|
||||
while (!(UESTA0X & (1 << CFGOK)));
|
||||
|
||||
eps[0].state = EP_IDLE;
|
||||
eps[0].size = 64;
|
||||
}
|
||||
|
||||
|
||||
void usb_init(void)
|
||||
{
|
||||
USBCON |= 1 << FRZCLK; /* freeze the clock */
|
||||
|
||||
/* enable the PLL and wait for it to lock */
|
||||
PLLCSR &= ~(1 << PLLP2 | 1 << PLLP1 | 1 << PLLP0);
|
||||
PLLCSR |= 1 << PLLE;
|
||||
while (!(PLLCSR & (1 << PLOCK)));
|
||||
|
||||
USBCON &= ~(1 << USBE); /* reset the controller */
|
||||
USBCON |= 1 << USBE;
|
||||
|
||||
USBCON &= ~(1 << FRZCLK); /* thaw the clock */
|
||||
|
||||
UDCON &= ~(1 << DETACH); /* attach the pull-up */
|
||||
UDCON |= 1 << RSTCPU; /* reset CPU on bus reset */
|
||||
|
||||
ep_init();
|
||||
}
|
||||
146
atusb/fw3/usb2/usb.h
Normal file
146
atusb/fw3/usb2/usb.h
Normal file
@ -0,0 +1,146 @@
|
||||
/*
|
||||
* common/usb.h - USB hardware setup and standard device requests
|
||||
*
|
||||
* Written 2008, 2009 by Werner Almesberger
|
||||
* Copyright 2008, 2009 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 USB_H
|
||||
#define USB_H
|
||||
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
|
||||
/*
|
||||
* Descriptor types
|
||||
*
|
||||
* Reuse libusb naming scheme (/usr/include/usb.h)
|
||||
*/
|
||||
|
||||
#define USB_DT_DEVICE 1
|
||||
#define USB_DT_CONFIG 2
|
||||
#define USB_DT_STRING 3
|
||||
#define USB_DT_INTERFACE 4
|
||||
#define USB_DT_ENDPOINT 5
|
||||
|
||||
/*
|
||||
* Device classes
|
||||
*
|
||||
* Reuse libusb naming scheme (/usr/include/usb.h)
|
||||
*/
|
||||
|
||||
#define USB_CLASS_PER_INTERFACE 0xfe
|
||||
#define USB_CLASS_VENDOR_SPEC 0xff
|
||||
|
||||
/*
|
||||
* Configuration attributes
|
||||
*/
|
||||
|
||||
#define USB_ATTR_BUS_POWERED 0x80
|
||||
#define USB_ATTR_SELF_POWERED 0x40
|
||||
#define USB_ATTR_REMOTE_WAKEUP 0x20
|
||||
|
||||
/*
|
||||
* Setup request types
|
||||
*/
|
||||
|
||||
#define TO_DEVICE(req) (0x00 | (req) << 8)
|
||||
#define FROM_DEVICE(req) (0x80 | (req) << 8)
|
||||
#define TO_INTERFACE(req) (0x01 | (req) << 8)
|
||||
#define FROM_INTERFACE(req) (0x81 | (req) << 8)
|
||||
#define TO_ENDPOINT(req) (0x02 | (req) << 8)
|
||||
#define FROM_ENDPOINT(req) (0x82 | (req) << 8)
|
||||
|
||||
/*
|
||||
* Setup requests
|
||||
*/
|
||||
|
||||
#define GET_STATUS 0x00
|
||||
#define CLEAR_FEATURE 0x01
|
||||
#define SET_FEATURE 0x03
|
||||
#define SET_ADDRESS 0x05
|
||||
#define GET_DESCRIPTOR 0x06
|
||||
#define SET_DESCRIPTOR 0x07
|
||||
#define GET_CONFIGURATION 0x08
|
||||
#define SET_CONFIGURATION 0x09
|
||||
#define GET_INTERFACE 0x0a
|
||||
#define SET_INTERFACE 0x0b
|
||||
#define SYNCH_FRAME 0x0c
|
||||
|
||||
|
||||
/*
|
||||
* Odd. sdcc seems to think "x" assumes the size of the destination, i.e.,
|
||||
* uint8_t. Hence the cast.
|
||||
*/
|
||||
|
||||
#define LE(x) ((uint16_t) (x) & 0xff), ((uint16_t) (x) >> 8)
|
||||
|
||||
#define LO(x) (((uint8_t *) &(x))[0])
|
||||
#define HI(x) (((uint8_t *) &(x))[1])
|
||||
|
||||
|
||||
#ifdef LOW_SPEED
|
||||
#define EP0_SIZE 8
|
||||
#else
|
||||
#define EP0_SIZE 64
|
||||
#endif
|
||||
|
||||
#define EP1_SIZE 64 /* simplify */
|
||||
|
||||
|
||||
enum ep_state {
|
||||
EP_IDLE,
|
||||
EP_RX,
|
||||
EP_TX,
|
||||
EP_STALL,
|
||||
};
|
||||
|
||||
struct ep_descr {
|
||||
enum ep_state state;
|
||||
uint8_t *buf;
|
||||
uint8_t *end;
|
||||
uint8_t size;
|
||||
void (*callback)(void *user);
|
||||
void *user;
|
||||
};
|
||||
|
||||
struct setup_request {
|
||||
uint8_t bmRequestType;
|
||||
uint8_t bRequest;
|
||||
uint16_t wValue;
|
||||
uint16_t wIndex;
|
||||
uint16_t wLength;
|
||||
};
|
||||
|
||||
|
||||
extern const uint8_t device_descriptor[];
|
||||
extern const uint8_t config_descriptor[];
|
||||
extern struct ep_descr eps[];
|
||||
|
||||
extern int (*user_setup)(struct setup_request *setup);
|
||||
extern int (*user_get_descriptor)(uint8_t type, uint8_t index,
|
||||
const uint8_t * const *reply, uint8_t *size);
|
||||
extern void (*user_reset)(void);
|
||||
|
||||
|
||||
#define usb_left(ep) ((ep)->end-(ep)->buf)
|
||||
#define usb_send(ep, buf, size, callback, user) \
|
||||
usb_io(ep, EP_TX, (void *) buf, size, callback, user)
|
||||
#define usb_recv(ep, buf, size, callback, user) \
|
||||
usb_io(ep, EP_RX, buf, size, callback, user)
|
||||
|
||||
void usb_io(struct ep_descr *ep, enum ep_state state, uint8_t *buf,
|
||||
uint8_t size, void (*callback)(void *user), void *user);
|
||||
|
||||
|
||||
void usb_init(void);
|
||||
void usb_poll(void);
|
||||
|
||||
#endif /* !USB_H */
|
||||
Loading…
Reference in New Issue
Block a user