/*
* This file is part of the libsigrok project.
*
- * Copyright (C) 2016 Andreas Zschunke <andreasz77@gmx.net>
+ * Copyright (C) 2016 Andreas Zschunke <andreas.zschunke@gmx.net>
+ * Copyright (C) 2017 Andrej Valek <andy@skyrain.eu>
+ * Copyright (C) 2017 Uwe Hermann <uwe@hermann-uwe.de>
*
* 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
#include <config.h>
#include "protocol.h"
-SR_PRIV int hantek_4032l_receive_data(int fd, int revents, void *cb_data)
+#define H4032L_USB_TIMEOUT 500
+
+enum h4032l_cmd {
+ CMD_RESET = 0x00b3, /* Also arms the logic analyzer. */
+ CMD_CONFIGURE = 0x2b1a,
+ CMD_STATUS = 0x4b3a,
+ CMD_GET = 0x6b5a
+};
+
+struct h4032l_status_packet {
+ uint32_t magic;
+ uint32_t values;
+ uint32_t status;
+ uint32_t usbxi_data;
+ uint32_t fpga_version;
+};
+
+static void abort_acquisition(struct dev_context *devc)
{
- const struct sr_dev_inst *sdi;
- struct dev_context *devc;
+ int i;
- (void)fd;
+ devc->acq_aborted = TRUE;
+
+ for (i = devc->num_transfers - 1; i >= 0; i--) {
+ if (devc->transfers[i])
+ libusb_cancel_transfer(devc->transfers[i]);
+ }
+
+ devc->status = H4032L_STATUS_IDLE;
+}
+
+static void finish_acquisition(struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc = sdi->priv;
+ struct drv_context *drvc = sdi->driver->context;
+
+ std_session_send_df_end(sdi);
+ usb_source_remove(sdi->session, drvc->sr_ctx);
+
+ devc->num_transfers = 0;
+ g_free(devc->transfers);
+}
+
+static void free_transfer(struct libusb_transfer *transfer)
+{
+ struct sr_dev_inst *sdi = transfer->user_data;
+ struct dev_context *devc = sdi->priv;
+ unsigned int i;
- if (!(sdi = cb_data))
- return TRUE;
+ if ((transfer->buffer != (unsigned char *)&devc->cmd_pkt) &&
+ (transfer->buffer != devc->buf)) {
+ g_free(transfer->buffer);
+ }
- if (!(devc = sdi->priv))
- return TRUE;
+ transfer->buffer = NULL;
+ libusb_free_transfer(transfer);
- if (revents == G_IO_IN) {
- /* TODO */
+ for (i = 0; i < devc->num_transfers; i++) {
+ if (devc->transfers[i] == transfer) {
+ devc->transfers[i] = NULL;
+ break;
+ }
}
+ if (--devc->submitted_transfers == 0)
+ finish_acquisition(sdi);
+}
+
+static void resubmit_transfer(struct libusb_transfer *transfer)
+{
+ int ret;
+
+ if ((ret = libusb_submit_transfer(transfer)) == LIBUSB_SUCCESS)
+ return;
+
+ sr_err("%s: %s", __func__, libusb_error_name(ret));
+ free_transfer(transfer);
+}
+
+static void send_data(struct sr_dev_inst *sdi,
+ uint32_t *data, size_t sample_count)
+{
+ struct dev_context *devc = sdi->priv;
+ struct sr_datafeed_logic logic = {
+ .length = sample_count * sizeof(uint32_t),
+ .unitsize = sizeof(uint32_t),
+ .data = data
+ };
+ const struct sr_datafeed_packet packet = {
+ .type = SR_DF_LOGIC,
+ .payload = &logic
+ };
+ size_t trigger_offset;
+
+ if (devc->trigger_pos >= devc->sent_samples &&
+ devc->trigger_pos < (devc->sent_samples + sample_count)) {
+ /* Get trigger position. */
+ trigger_offset = devc->trigger_pos - devc->sent_samples;
+ logic.length = trigger_offset * sizeof(uint32_t);
+ if (logic.length)
+ sr_session_send(sdi, &packet);
+
+ /* Send trigger position. */
+ std_session_send_df_trigger(sdi);
+
+ /* Send rest of data. */
+ logic.length = (sample_count - trigger_offset) * sizeof(uint32_t);
+ logic.data = data + trigger_offset;
+ if (logic.length)
+ sr_session_send(sdi, &packet);
+ } else {
+ sr_session_send(sdi, &packet);
+ }
+
+ devc->sent_samples += sample_count;
+}
+
+SR_PRIV int h4032l_receive_data(int fd, int revents, void *cb_data)
+{
+ struct timeval tv;
+ struct drv_context *drvc;
+
+ (void)fd;
+ (void)revents;
+
+ drvc = (struct drv_context *)cb_data;
+
+ tv.tv_sec = tv.tv_usec = 0;
+ libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
+
return TRUE;
}
+
+void LIBUSB_CALL h4032l_data_transfer_callback(struct libusb_transfer *transfer)
+{
+ struct sr_dev_inst *const sdi = transfer->user_data;
+ struct dev_context *const devc = sdi->priv;
+ uint32_t max_samples = transfer->actual_length / sizeof(uint32_t);
+ uint32_t *buf;
+ uint32_t num_samples;
+
+ /*
+ * If acquisition has already ended, just free any queued up
+ * transfer that come in.
+ */
+ if (devc->acq_aborted) {
+ free_transfer(transfer);
+ return;
+ }
+
+ if (transfer->status != LIBUSB_TRANSFER_COMPLETED)
+ sr_dbg("%s error: %d.", __func__, transfer->status);
+
+ /* Cancel pending transfers. */
+ if (transfer->actual_length == 0) {
+ resubmit_transfer(transfer);
+ return;
+ }
+
+ buf = (uint32_t *)transfer->buffer;
+
+ num_samples = MIN(devc->remaining_samples, max_samples);
+ devc->remaining_samples -= num_samples;
+ send_data(sdi, buf, num_samples);
+ sr_dbg("Remaining: %d %08X %08X.", devc->remaining_samples,
+ buf[0], buf[1]);
+
+ /* Close data receiving. */
+ if (devc->remaining_samples == 0) {
+ if (buf[num_samples] != H4032L_END_PACKET_MAGIC)
+ sr_err("Mismatch magic number of end poll.");
+
+ abort_acquisition(devc);
+ free_transfer(transfer);
+ } else {
+ if (((devc->submitted_transfers - 1) * H4032L_DATA_BUFFER_SIZE) <
+ (int32_t)(devc->remaining_samples * sizeof(uint32_t)))
+ resubmit_transfer(transfer);
+ else
+ free_transfer(transfer);
+ }
+}
+
+void LIBUSB_CALL h4032l_usb_callback(struct libusb_transfer *transfer)
+{
+ struct sr_dev_inst *const sdi = transfer->user_data;
+ struct dev_context *const devc = sdi->priv;
+ struct sr_usb_dev_inst *usb = sdi->conn;
+ gboolean cmd = FALSE;
+ uint32_t max_samples = transfer->actual_length / sizeof(uint32_t);
+ uint32_t *buf;
+ struct h4032l_status_packet *status;
+ uint32_t num_samples;
+ int ret;
+
+ /*
+ * If acquisition has already ended, just free any queued up
+ * transfers that come in.
+ */
+ if (devc->acq_aborted) {
+ free_transfer(transfer);
+ return;
+ }
+
+ if (transfer->status != LIBUSB_TRANSFER_COMPLETED)
+ sr_dbg("%s error: %d.", __func__, transfer->status);
+
+ buf = (uint32_t *)transfer->buffer;
+
+ switch (devc->status) {
+ case H4032L_STATUS_IDLE:
+ sr_err("USB callback called in idle.");
+ break;
+ case H4032L_STATUS_CMD_CONFIGURE:
+ /* Select status request as next. */
+ cmd = TRUE;
+ devc->cmd_pkt.cmd = CMD_STATUS;
+ devc->status = H4032L_STATUS_CMD_STATUS;
+ break;
+ case H4032L_STATUS_CMD_STATUS:
+ /* Select status request as next. */
+ devc->status = H4032L_STATUS_RESPONSE_STATUS;
+ break;
+ case H4032L_STATUS_RESPONSE_STATUS:
+ /*
+ * Check magic and if status is complete, then select
+ * First Transfer as next.
+ */
+ status = (struct h4032l_status_packet *)transfer->buffer;
+ if (status->magic != H4032L_STATUS_PACKET_MAGIC)
+ devc->status = H4032L_STATUS_RESPONSE_STATUS;
+ else if (status->status == 2)
+ devc->status = H4032L_STATUS_RESPONSE_STATUS_CONTINUE;
+ else
+ devc->status = H4032L_STATUS_RESPONSE_STATUS_RETRY;
+ break;
+ case H4032L_STATUS_RESPONSE_STATUS_RETRY:
+ devc->status = H4032L_STATUS_CMD_STATUS;
+ devc->cmd_pkt.cmd = CMD_STATUS;
+ cmd = TRUE;
+ break;
+ case H4032L_STATUS_RESPONSE_STATUS_CONTINUE:
+ devc->status = H4032L_STATUS_CMD_GET;
+ devc->cmd_pkt.cmd = CMD_GET;
+ cmd = TRUE;
+ break;
+ case H4032L_STATUS_CMD_GET:
+ devc->status = H4032L_STATUS_FIRST_TRANSFER;
+ /* Trigger has been captured. */
+ std_session_send_df_header(sdi);
+ break;
+ case H4032L_STATUS_FIRST_TRANSFER:
+ /* Drop packets until H4032L_START_PACKET_MAGIC. */
+ if (buf[0] != H4032L_START_PACKET_MAGIC) {
+ sr_dbg("Mismatch magic number of start poll.");
+ break;
+ }
+ devc->status = H4032L_STATUS_TRANSFER;
+ max_samples--;
+ buf++;
+ /* Fallthrough. */
+ case H4032L_STATUS_TRANSFER:
+ num_samples = MIN(devc->remaining_samples, max_samples);
+ devc->remaining_samples -= num_samples;
+ send_data(sdi, buf, num_samples);
+ sr_dbg("Remaining: %d %08X %08X.", devc->remaining_samples,
+ buf[0], buf[1]);
+ break;
+ }
+
+ /* Start data receiving. */
+ if (devc->status == H4032L_STATUS_TRANSFER) {
+ if ((ret = h4032l_start_data_transfers(sdi)) != SR_OK) {
+ sr_err("Can not start data transfers: %d", ret);
+ devc->status = H4032L_STATUS_IDLE;
+ }
+ } else if (devc->status != H4032L_STATUS_IDLE) {
+ if (cmd) {
+ /* Setup new USB cmd packet, reuse transfer object. */
+ sr_dbg("New command: %d.", devc->status);
+ libusb_fill_bulk_transfer(transfer, usb->devhdl,
+ 2 | LIBUSB_ENDPOINT_OUT,
+ (unsigned char *)&devc->cmd_pkt,
+ sizeof(struct h4032l_cmd_pkt),
+ h4032l_usb_callback,
+ (void *)sdi, H4032L_USB_TIMEOUT);
+ } else {
+ /* Setup new USB poll packet, reuse transfer object. */
+ sr_dbg("Poll: %d.", devc->status);
+ libusb_fill_bulk_transfer(transfer, usb->devhdl,
+ 6 | LIBUSB_ENDPOINT_IN,
+ devc->buf, ARRAY_SIZE(devc->buf),
+ h4032l_usb_callback,
+ (void *)sdi, H4032L_USB_TIMEOUT);
+ }
+ /* Send prepared USB packet. */
+ if ((ret = libusb_submit_transfer(transfer)) != 0) {
+ sr_err("Failed to submit transfer: %s.",
+ libusb_error_name(ret));
+ devc->status = H4032L_STATUS_IDLE;
+ }
+ } else {
+ sr_dbg("Now idle.");
+ }
+
+ if (devc->status == H4032L_STATUS_IDLE)
+ free_transfer(transfer);
+}
+
+uint16_t h4032l_voltage2pwm(double voltage)
+{
+ /*
+ * word PwmA - channel A Vref PWM value, pseudocode:
+ * -6V < ThresholdVoltage < +6V
+ * Vref = 1.8 - ThresholdVoltage
+ * if Vref > 10.0
+ * Vref = 10.0
+ * if Vref < -5.0
+ * Vref = -5.0
+ * pwm = ToInt((Vref + 5.0) / 15.0 * 4096.0)
+ * if pwm > 4095
+ * pwm = 4095
+ */
+ voltage = 1.8 - voltage;
+ if (voltage > 10.0)
+ voltage = 10.0;
+ else if (voltage < -5.0)
+ voltage = -5.0;
+
+ return (uint16_t) ((voltage + 5.0) * (4096.0 / 15.0));
+}
+
+SR_PRIV int h4032l_start_data_transfers(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc = sdi->priv;
+ struct sr_usb_dev_inst *usb = sdi->conn;
+ struct libusb_transfer *transfer;
+ uint8_t *buf;
+ unsigned int num_transfers;
+ unsigned int i;
+ int ret;
+
+ devc->submitted_transfers = 0;
+
+ /*
+ * Set number of data transfers regarding to size of buffer.
+ * FPGA version 0 can't transfer multiple transfers at once.
+ */
+ if ((num_transfers = MIN(devc->remaining_samples * sizeof(uint32_t) /
+ H4032L_DATA_BUFFER_SIZE, devc->fpga_version ?
+ H4032L_DATA_TRANSFER_MAX_NUM : 1)) == 0)
+ num_transfers = 1;
+
+ g_free(devc->transfers);
+ devc->transfers = g_malloc(sizeof(*devc->transfers) * num_transfers);
+ devc->num_transfers = num_transfers;
+
+ for (i = 0; i < num_transfers; i++) {
+ buf = g_malloc(H4032L_DATA_BUFFER_SIZE);
+ transfer = libusb_alloc_transfer(0);
+
+ libusb_fill_bulk_transfer(transfer, usb->devhdl,
+ 6 | LIBUSB_ENDPOINT_IN,
+ buf, H4032L_DATA_BUFFER_SIZE,
+ h4032l_data_transfer_callback,
+ (void *)sdi, H4032L_USB_TIMEOUT);
+
+ /* Send prepared usb packet. */
+ if ((ret = libusb_submit_transfer(transfer)) != 0) {
+ sr_err("Failed to submit transfer: %s.",
+ libusb_error_name(ret));
+ libusb_free_transfer(transfer);
+ g_free(buf);
+ abort_acquisition(devc);
+ return SR_ERR;
+ }
+ devc->transfers[i] = transfer;
+ devc->submitted_transfers++;
+ }
+
+ return SR_OK;
+}
+
+SR_PRIV int h4032l_start(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc = sdi->priv;
+ struct sr_usb_dev_inst *usb = sdi->conn;
+ struct libusb_transfer *transfer;
+ unsigned char buf[] = {0x0f, 0x03, 0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+ int ret;
+
+ /* Send reset command to arm the logic analyzer. */
+ if ((ret = libusb_control_transfer(usb->devhdl,
+ LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT, CMD_RESET,
+ 0x00, 0x00, buf, ARRAY_SIZE(buf), H4032L_USB_TIMEOUT)) < 0) {
+ sr_err("Failed to send vendor request %s.",
+ libusb_error_name(ret));
+ return SR_ERR;
+ }
+
+ /* Wait for reset vendor request. */
+ g_usleep(20 * 1000);
+
+ /* Send configure command. */
+ devc->cmd_pkt.cmd = CMD_CONFIGURE;
+ devc->status = H4032L_STATUS_CMD_CONFIGURE;
+ devc->remaining_samples = devc->cmd_pkt.sample_size;
+
+ transfer = libusb_alloc_transfer(0);
+
+ libusb_fill_bulk_transfer(transfer, usb->devhdl,
+ 2 | LIBUSB_ENDPOINT_OUT, (unsigned char *)&devc->cmd_pkt,
+ sizeof(struct h4032l_cmd_pkt), h4032l_usb_callback,
+ (void *)sdi, H4032L_USB_TIMEOUT);
+
+ if ((ret = libusb_submit_transfer(transfer)) != 0) {
+ sr_err("Failed to submit transfer: %s.",
+ libusb_error_name(ret));
+ libusb_free_transfer(transfer);
+ return SR_ERR;
+ }
+
+ devc->transfers = g_malloc0(sizeof(*devc->transfers));
+ devc->submitted_transfers++;
+ devc->num_transfers = 1;
+ devc->transfers[0] = transfer;
+
+ return SR_OK;
+}
+
+SR_PRIV int h4032l_stop(struct sr_dev_inst *sdi)
+{
+ abort_acquisition(sdi->priv);
+
+ return SR_OK;
+}
+
+SR_PRIV int h4032l_dev_open(struct sr_dev_inst *sdi)
+{
+ struct drv_context *drvc = sdi->driver->context;
+ struct sr_usb_dev_inst *usb = sdi->conn;
+ struct libusb_device_descriptor des;
+ libusb_device **devlist;
+ int ret = SR_ERR, i, device_count;
+ char connection_id[64];
+
+ device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
+ if (device_count < 0) {
+ sr_err("Failed to get device list: %s.",
+ libusb_error_name(device_count));
+ return SR_ERR;
+ }
+
+ for (i = 0; i < device_count; i++) {
+ libusb_get_device_descriptor(devlist[i], &des);
+
+ if (des.idVendor != H4032L_USB_VENDOR ||
+ des.idProduct != H4032L_USB_PRODUCT)
+ continue;
+
+ if ((sdi->status == SR_ST_INITIALIZING) ||
+ (sdi->status == SR_ST_INACTIVE)) {
+ /* Check device by its physical USB bus/port address. */
+ if (usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)) < 0)
+ continue;
+
+ if (strcmp(sdi->connection_id, connection_id))
+ /* This is not the one. */
+ continue;
+ }
+
+ if (!(ret = libusb_open(devlist[i], &usb->devhdl))) {
+ if (usb->address == 0xff)
+ /*
+ * First time we touch this device after FW
+ * upload, so we don't know the address yet.
+ */
+ usb->address =
+ libusb_get_device_address(devlist[i]);
+ } else {
+ sr_err("Failed to open device: %s.",
+ libusb_error_name(ret));
+ ret = SR_ERR;
+ break;
+ }
+
+ ret = SR_OK;
+ break;
+ }
+
+ libusb_free_device_list(devlist, 1);
+ return ret;
+}
+
+SR_PRIV int h4032l_get_fpga_version(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc = sdi->priv;
+ struct sr_usb_dev_inst *usb = sdi->conn;
+ struct h4032l_status_packet *status;
+ int transferred;
+ int i, ret;
+
+ /* Set command to status. */
+ devc->cmd_pkt.magic = H4032L_CMD_PKT_MAGIC;
+ devc->cmd_pkt.cmd = CMD_STATUS;
+
+ /* Send status request. */
+ if ((ret = libusb_bulk_transfer(usb->devhdl,
+ 2 | LIBUSB_ENDPOINT_OUT, (unsigned char *)&devc->cmd_pkt,
+ sizeof(struct h4032l_cmd_pkt), &transferred, H4032L_USB_TIMEOUT)) < 0) {
+ sr_err("Unable to send FPGA version request: %s.",
+ libusb_error_name(ret));
+ return SR_ERR;
+ }
+
+ /* Attempt to get FGPA version. */
+ for (i = 0; i < 10; i++) {
+ if ((ret = libusb_bulk_transfer(usb->devhdl,
+ 6 | LIBUSB_ENDPOINT_IN, devc->buf,
+ ARRAY_SIZE(devc->buf), &transferred, H4032L_USB_TIMEOUT)) < 0) {
+ sr_err("Unable to receive FPGA version: %s.",
+ libusb_error_name(ret));
+ return SR_ERR;
+ }
+ status = (struct h4032l_status_packet *)devc->buf;
+ if (status->magic == H4032L_STATUS_PACKET_MAGIC) {
+ sr_dbg("FPGA version: 0x%x.", status->fpga_version);
+ devc->fpga_version = status->fpga_version;
+ return SR_OK;
+ }
+ }
+
+ sr_err("Unable to get FPGA version.");
+
+ return SR_ERR;
+}
projects / libsigrok.git / blobdiff