123 lines
3.7 KiB
C
123 lines
3.7 KiB
C
/*
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* This file is part of the libsigrok project.
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*
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* Copyright (C) 2014 Daniel Elstner <daniel.kitta@gmail.com>
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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 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef LIBSIGROK_HARDWARE_SYSCLK_LWLA_LWLA_H
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#define LIBSIGROK_HARDWARE_SYSCLK_LWLA_LWLA_H
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#include "libsigrok.h"
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#include <stdint.h>
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#include <libusb.h>
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#include <glib.h>
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struct sr_usb_dev_inst;
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/* Rotate argument n bits to the left.
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* This construct is an idiom recognized by GCC as bit rotation.
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*/
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#define LROTATE(a, n) (((a) << (n)) | ((a) >> (CHAR_BIT * sizeof(a) - (n))))
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/* Convert 16-bit little endian LWLA protocol word to machine word order. */
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#define LWLA_TO_UINT16(val) GUINT16_FROM_LE(val)
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/* Convert 32-bit mixed endian LWLA protocol word to machine word order. */
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#define LWLA_TO_UINT32(val) LROTATE(GUINT32_FROM_LE(val), 16)
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/* Convert 16-bit argument to LWLA protocol word. */
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#define LWLA_WORD(val) GUINT16_TO_LE(val)
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/* Extract 16-bit units in mixed endian order from 32/64-bit value. */
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#define LWLA_WORD_0(val) GUINT16_TO_LE(((val) >> 16) & 0xFFFF)
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#define LWLA_WORD_1(val) GUINT16_TO_LE((val) & 0xFFFF)
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#define LWLA_WORD_2(val) GUINT16_TO_LE(((val) >> 48) & 0xFFFF)
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#define LWLA_WORD_3(val) GUINT16_TO_LE(((val) >> 32) & 0xFFFF)
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/** USB device end points.
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*/
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enum {
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EP_COMMAND = 2,
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EP_BITSTREAM = 4,
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EP_REPLY = 6 | LIBUSB_ENDPOINT_IN
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};
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/** LWLA protocol command ID codes.
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*/
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enum {
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CMD_READ_REG = 1,
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CMD_WRITE_REG = 2,
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CMD_READ_MEM = 6,
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CMD_CAP_SETUP = 7,
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CMD_CAP_STATUS = 8,
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};
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/** LWLA capture state flags.
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*/
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enum {
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STATUS_CAPTURING = 1 << 1,
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STATUS_TRIGGERED = 1 << 4,
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STATUS_MEM_AVAIL = 1 << 5,
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STATUS_FLAG_MASK = 0x3F
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};
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/** LWLA register addresses.
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*/
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enum {
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REG_MEM_CTRL2 = 0x1074, /* capture buffer control ??? */
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REG_MEM_FILL = 0x1078, /* capture buffer fill level */
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REG_MEM_CTRL4 = 0x107C, /* capture buffer control ??? */
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REG_DIV_BYPASS = 0x1094, /* bypass clock divider flag */
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REG_CMD_CTRL1 = 0x10B0, /* command control ??? */
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REG_CMD_CTRL2 = 0x10B4, /* command control ??? */
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REG_CMD_CTRL3 = 0x10B8, /* command control ??? */
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REG_CMD_CTRL4 = 0x10BC, /* command control ??? */
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REG_FREQ_CH1 = 0x10C0, /* channel 1 live frequency */
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REG_FREQ_CH2 = 0x10C4, /* channel 2 live frequency */
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REG_FREQ_CH3 = 0x10C8, /* channel 3 live frequency */
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REG_FREQ_CH4 = 0x10CC, /* channel 4 live frequency */
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};
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/** Register/value pair.
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*/
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struct regval_pair {
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unsigned int reg;
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unsigned int val;
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};
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SR_PRIV int lwla_send_bitstream(const struct sr_usb_dev_inst *usb,
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const char *basename);
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SR_PRIV int lwla_send_command(const struct sr_usb_dev_inst *usb,
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const uint16_t *command, int cmd_len);
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SR_PRIV int lwla_receive_reply(const struct sr_usb_dev_inst *usb,
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uint32_t *reply, int reply_len, int expect_len);
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SR_PRIV int lwla_read_reg(const struct sr_usb_dev_inst *usb,
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uint16_t reg, uint32_t *value);
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SR_PRIV int lwla_write_reg(const struct sr_usb_dev_inst *usb,
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uint16_t reg, uint32_t value);
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SR_PRIV int lwla_write_regs(const struct sr_usb_dev_inst *usb,
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const struct regval_pair *regvals, int count);
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#endif /* !LIBSIGROK_HARDWARE_SYSCLK_LWLA_LWLA_H */
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