diff options
| author | Franck Jullien <franck.jullien@gmail.com> | 2013-11-03 17:31:44 +0100 |
|---|---|---|
| committer | Spencer Oliver <spen@spen-soft.co.uk> | 2014-01-20 13:28:02 +0000 |
| commit | 87e91f4db9bea66a7866261130c6152c0304bc29 (patch) | |
| tree | a7736dbbb075cf8d71d4a4ceb3ace5112ce3c6ba /src/jtag/drivers/usb_blaster/ublast_access.h | |
| parent | e18c958e8283447fc4c25a85ecea833d73d77ca9 (diff) | |
jtag/drivers: add USB-Blaster II
This patchs adds a new access driver for the existing
USB-Blaster interface driver.
This interface (as it is build-in on the sockit development
board) is composed of a Cypress EZ-USB plus a CPLD.
The Cypress chip as an embedded 8051 microcontroller.
When it's powered up, the firmware is downloaded to the
chip then the device is disconnected and reconnected with
the new firmware.
The USB-Blaster II protocol is almost identicial to
the old one. The only difference is that you need to
send a 0x5F before read TDO back. This command
seems to copy TDO buffer datas to the endpoint buffer.
Driver will be auto enabled if libusb-1.0 is detected.
Change-Id: I562a720a68cb4dcabeab791947d5d38776cb70fa
Signed-off-by: Franck Jullien <franck.jullien@gmail.com>
Reviewed-on: http://openocd.zylin.com/1791
Tested-by: jenkins
Reviewed-by: Robert Jarzmik <robert.jarzmik@free.fr>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Diffstat (limited to 'src/jtag/drivers/usb_blaster/ublast_access.h')
| -rw-r--r-- | src/jtag/drivers/usb_blaster/ublast_access.h | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/src/jtag/drivers/usb_blaster/ublast_access.h b/src/jtag/drivers/usb_blaster/ublast_access.h index e0eb059e..9a9762c8 100644 --- a/src/jtag/drivers/usb_blaster/ublast_access.h +++ b/src/jtag/drivers/usb_blaster/ublast_access.h @@ -4,6 +4,7 @@ * Inspired from original code from Kolja Waschk's USB-JTAG project * (http://www.ixo.de/info/usb_jtag/), and from openocd project. * + * Copyright (C) 2013 Franck Jullien franck.jullien@gmail.com * Copyright (C) 2012 Robert Jarzmik robert.jarzmik@free.fr * Copyright (C) 2011 Ali Lown ali@lown.me.uk * Copyright (C) 2009 Catalin Patulea cat@vv.carleton.ca @@ -21,10 +22,19 @@ * */ +#include <libusb_common.h> + +/* Low level flags */ +#define COPY_TDO_BUFFER (1 << 0) + struct ublast_lowlevel { uint16_t ublast_vid; uint16_t ublast_pid; + uint16_t ublast_vid_uninit; + uint16_t ublast_pid_uninit; char *ublast_device_desc; + struct jtag_libusb_device_handle *libusb_dev; + char *firmware_path; int (*write)(struct ublast_lowlevel *low, uint8_t *buf, int size, uint32_t *bytes_written); @@ -35,18 +45,22 @@ struct ublast_lowlevel { int (*speed)(struct ublast_lowlevel *low, int speed); void *priv; + int flags; }; /** * ublast_register_ftdi - get a lowlevel USB Blaster driver * ublast_register_ftd2xx - get a lowlevel USB Blaster driver + * ublast2_register_libusb - get a lowlevel USB Blaster II driver * - * Get a lowlevel USB-Blaster driver. In the current implementation, there are 2 + * Get a lowlevel USB-Blaster driver. In the current implementation, there are 3 * possible lowlevel drivers : * - one based on libftdi from ftdichip.com * - one based on libftdxx, the free alternative + * - one based on libusb, specific to the USB-Blaster II * * Returns the lowlevel driver structure. */ extern struct ublast_lowlevel *ublast_register_ftdi(void); extern struct ublast_lowlevel *ublast_register_ftd2xx(void); +extern struct ublast_lowlevel *ublast2_register_libusb(void); |