/*
* 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_CONFIGURE = 0x2b1a, /* Also arms the logic analyzer. */
+ CMD_STATUS = 0x4b3a,
+ CMD_GET = 0x6b5a
+};
+
+struct __attribute__((__packed__)) h4032l_status_packet {
+ uint32_t magic;
+ uint32_t values;
+ uint32_t status;
+};
+
+SR_PRIV int h4032l_receive_data(int fd, int revents, void *cb_data)
{
- const struct sr_dev_inst *sdi;
- struct dev_context *devc;
+ 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);
- if (!(sdi = cb_data))
- return TRUE;
+ return TRUE;
+}
- if (!(devc = sdi->priv))
- return TRUE;
+void LIBUSB_CALL h4032l_usb_callback(struct libusb_transfer *transfer)
+{
+ const struct sr_dev_inst *sdi = transfer->user_data;
+ struct dev_context *devc = sdi->priv;
+ struct drv_context *drvc = sdi->driver->context;
+ struct sr_usb_dev_inst *usb = sdi->conn;
+ gboolean cmd = FALSE;
+ uint32_t max_samples = 512 / sizeof(uint32_t);
+ uint32_t *buffer;
+ struct h4032l_status_packet *status;
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_logic logic;
+ uint32_t number_samples;
+ int ret;
- if (revents == G_IO_IN) {
- /* TODO */
+ if (transfer->status != LIBUSB_TRANSFER_COMPLETED) {
+ sr_err("%s error: %d.", __func__, transfer->status);
+ return;
}
- return TRUE;
+ buffer = (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_CMD_STATUS;
+ devc->cmd_pkt.cmd = CMD_STATUS;
+ cmd = TRUE;
+ } 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;
+ break;
+ case H4032L_STATUS_FIRST_TRANSFER:
+ if (buffer[0] != H4032L_START_PACKET_MAGIC) {
+ sr_err("Mismatch magic number of start poll.");
+ devc->status = H4032L_STATUS_IDLE;
+ break;
+ }
+ devc->status = H4032L_STATUS_TRANSFER;
+ max_samples--;
+ buffer++;
+ break;
+ case H4032L_STATUS_TRANSFER:
+ number_samples = (devc->remaining_samples < max_samples) ? devc->remaining_samples : max_samples;
+ devc->remaining_samples -= number_samples;
+ packet.type = SR_DF_LOGIC;
+ packet.payload = &logic;
+ logic.length = number_samples * sizeof(uint32_t);
+ logic.unitsize = sizeof(uint32_t);
+ logic.data = buffer;
+ sr_session_send(sdi, &packet);
+ sr_dbg("Remaining: %d %08X %08X.", devc->remaining_samples,
+ buffer[0], buffer[1]);
+ if (devc->remaining_samples == 0) {
+ std_session_send_df_end(sdi);
+ usb_source_remove(sdi->session, drvc->sr_ctx);
+ devc->status = H4032L_STATUS_IDLE;
+ if (buffer[number_samples] != H4032L_END_PACKET_MAGIC)
+ sr_err("Mismatch magic number of end poll.");
+ }
+ break;
+ }
+
+ 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->buffer, ARRAY_SIZE(devc->buffer),
+ 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)
+ libusb_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(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc = sdi->priv;
+ struct sr_usb_dev_inst *usb = sdi->conn;
+ struct libusb_transfer *transfer;
+ int ret;
+
+ /* Send configure command to arm the logic analyzer. */
+ 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;
+ }
+
+ std_session_send_df_header(sdi);
+
+ 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. */
+ usb_get_port_path(devlist[i], connection_id,
+ sizeof(connection_id));
+ 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;
}
projects / libsigrok.git / blobdiff