At an interrupt barrier, the host must be able to ensure that no
interrupt generated before reaching the barrier is still pending and
will be delivered after crossing the barrier.
For this, we introduce the following concept:
- interrupts have a serial number. This number is sent to the host
on EP 1 (currently bulk) to signal the interrupt, instead of the
zero byte we used previously.
- the new request ATUSB_SPI_WRITE2_SYNC returns the interrupt
serial number from after the register write (the register write
itself is the interrupt barrier).
- the host can now check if the serial indicated from bulk and the
serial from ATUSB_SPI_WRITE2_SYNC are the same. If yes, interrupts
are synchronized. If not, it has to wait for the interrupt to be
signaled on EP 1.
We should also consider the case that the interrupt serial has gotten
ahead of ATUSB_SPI_WRITE2_SYNC. But that seems to happen rarely. In
any case, it's something for the host driver to worry about, not for
the firmware.
- board.h (irq_serial), board_app.c (irq_serial, INT0_vect): count
the interrupt serial number and return it when signaling the
interrupt
- include/atusb/ep0.h (ATUSB_SPI_WRITE2_SYNC), ep0.c (my_setup):
new request ATUSB_SPI_WRITE2_SYNC that does a register write, then
returns the interrupt serial
This reverts commit 39e3d4e61a.
The log isn't so useful in its present state because we may have to
unplug/replug to get out of a troublesome condition.
- board.h (gpio_cleanup), board_app.c (gpio_cleanup): restore INT0
when done manipulating GPIOs
- board.c (gpio): updated comment explaining how to restore INT0
- include/atusb/ep0.h (enum atspi_requests), ep0.c
(ATUSB_GPIO_CLEANUP): new request to return to normal operation
after ATUSB_GPIO
- ep0.c (setup_request): store combined request code in "req", for
later reuse
- include/ep0.h (ATUSB_SPI_WRITE, ATUSB_SPI_READ1, ATUSB_SPI_READ2),
ep0.c (setup_request): new requests that translate easily into
general SPI operations
reset_rf now resets all GPIOs to their default state. This way, we
can easily recover from an incomplete or incorrect use of ATUSB_GPIO.
- atusb.c (main), board.c (reset_rf): moved call to spi_init into
reset_rf
- board.c (reset_rf, board_init): moved GPIO setup to reset_rf
- board.c (reset_rf): set GPIOs to reset defaults
- board.h (gpio), board.c: read/modify/write all settings of GPIO
ports
- include/atusb/ep0.h (enum atspi_requests): added new request
ATUSB_GPIO
- ep0.c (my_setup): ATUSB_GPIO reads/reconfigures a GPIO port
- atusb.c (main): poll the 16 bit timer for overflows
- board.h (timer_poll, timer_read), (board.c (timer_h, timer_poll,
timer_read, board_init): added support for a free-running 48 bit timer
(16 bits in hardware, 32 bits in software)
- include/atusb/ep0.h (ATUSB_TIMER), ep0.c (my_setup): new request
ATUSB_TIMER to retrieve the value of the 8 MHz counter
- include/atusb/ep0.h (enum atspi_requests): describe what the groups
of requests do
- fw/include/atusb/ep0.h (HW_TYPE_110131): defined hardware type 2 for
ATmega32U2-based boards
- fw/ep0.c: define HW_TYPE as HW_TYPE_110131, not directly as 2
- fw2/atusb.c: include atusb/ep0.h instead of declaring ep0_init locally
- at86rf230.h (REG_BATMON): address is 0x11, not 0x10
- at86rf230.h (TRX_CMD_MASK): width is 5 bits, not 3
- at86rf230.h (CLKM_CTRL_MASK): width is 3 bits, not 2
- at86rf230.h (PA_EXT_EN, IRQ_2_EXT_EN, TX_AUTO_CRC_ON_231): shifted by one
bit
- at86rf230.h (RX_BL_CTRL, AACK_DIS_ACK): added missing field
- at86rf230.h: added fields PA_BUF_LT and PA_LT
- at86rf230.h (ANT_DIV): added fields of this register
- at86rf230.h (NATMON_VTH_SHIFT, NATMON_VTH_MASK): corrected typo
- fw/Makefile: replaced "make" with $(MAKE) (just for style)
- common/Makefile.common: Makefile settings shared within project. For now,
this contains only the board version, which defaults to 2010-12-16.
- fw/common/Makefile, fw/boot/Makefile, fw/atusb/Makefile: include
common/Makefile.common
- fw/common/Makefile, fw/boot/Makefile, fw/atusb/Makefile: pass board
version to cpp and gcc
- fw/atusb/atusb.c (init_io): individually set IRQ_RF to one, LED and TST
to zero
- fw/atusb/atusb.c (init_io): added macros to set all unused pins to zero
in a way that doesn't need updating if a signal moves from one pin to
another
- include/atusb/ep0.h: added hardware type 1 (2010-12-16 design)
- common/config.h: set hardware type depending on board version
- common/io.h: assign pins depending on board version
- atusb/fw/boot/Makefile: still referred to the project as ATSPI (not ATRF)
in title comment
- atusb/fw/include/atusb/usb-ids.h: still had old atspi path in title comment
- common/io.h: TST is connected to P0_7
- include/at86rf230.h: added test mode registers REG_CONT_TX_0 (0x36) and
REG_CONT_TX_1 (0x3d), with their values
- atspi/atspi.c (set_test_mode): set or reset TST and the LED
- atspi/atspi.c (reset_rf): leave test mode
- atspi/atspi.c (test_mode): enter test mode
- atspi/atspi.c (main): flash the LED when in test mode
- include/atspi/ep0.h (enum atspi_requests), atspi/ep0.c (my_setup): new
command ATSPI_TEST to enter test mode
- include/atspi/ep0.h (EP0ATSPI_MINOR): bumped protocol to version 0.1
- include/at86rf230.h: corrected comment before TRX_CMD field to indicate
that the register is called TRX_STATE
- atrf/: rename to atusb/
- atrf/wpan-atrf.pro, atrf/wpan-atrf.sch, atrf/wpan-atrf.brd,
atrf/wpan-atrf.cmp: rename to atusb.*
- atrf/Makefile: change ben-wpan to atusb
- atrf/atusb.pro (LastNetListRead): update for name change
- tools/Makefile.common (CFLAGS): change fw/ include location from atrf/
to atusb/
