usb_api_operacake.c
/*
 * Copyright 2016-2022 Great Scott Gadgets <info@greatscottgadgets.com>
 * Copyright 2016 Dominic Spill <dominicgs@gmail.com>
 *
 * This file is part of HackRF.
 *
 * 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
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

#include "usb_api_operacake.h"
#include "usb_queue.h"

#include <stddef.h>
#include <operacake.h>
#include <operacake_sctimer.h>
#include <sct.h>

usb_request_status_t usb_vendor_request_operacake_get_boards(
	usb_endpoint_t* const endpoint,
	const usb_transfer_stage_t stage)
{
	if (stage == USB_TRANSFER_STAGE_SETUP) {
		operacake_get_boards(endpoint->buffer);
		usb_transfer_schedule_block(endpoint->in, endpoint->buffer, 8, NULL, NULL);
		usb_transfer_schedule_ack(endpoint->out);
	}
	return USB_REQUEST_STATUS_OK;
}

usb_request_status_t usb_vendor_request_operacake_set_ports(
	usb_endpoint_t* const endpoint,
	const usb_transfer_stage_t stage)
{
	uint8_t address, port_a, port_b;
	address = endpoint->setup.value & 0xFF;
	port_a = endpoint->setup.index & 0xFF;
	port_b = (endpoint->setup.index >> 8) & 0xFF;
	if (stage == USB_TRANSFER_STAGE_SETUP) {
		operacake_set_ports(address, port_a, port_b);
		usb_transfer_schedule_ack(endpoint->in);
	}
	return USB_REQUEST_STATUS_OK;
}

static unsigned char data[MAX_OPERACAKE_RANGES * 5];

usb_request_status_t usb_vendor_request_operacake_set_ranges(
	usb_endpoint_t* const endpoint,
	const usb_transfer_stage_t stage)
{
	uint16_t i, freq_min, freq_max, num_ranges = 0;
	uint8_t port;

	if (stage == USB_TRANSFER_STAGE_SETUP) {
		num_ranges = endpoint->setup.length / 5;
		if ((num_ranges == 0) || (num_ranges > MAX_OPERACAKE_RANGES)) {
			return USB_REQUEST_STATUS_STALL;
		}
		operacake_clear_ranges();
		usb_transfer_schedule_block(
			endpoint->out,
			&data,
			endpoint->setup.length,
			NULL,
			NULL);
	} else if (stage == USB_TRANSFER_STAGE_DATA) {
		for (i = 0; i < endpoint->setup.length; i += 5) {
			freq_min = data[i] << 8 | data[i + 1];
			freq_max = data[i + 2] << 8 | data[i + 3];
			port = data[i + 4];
			operacake_add_range(freq_min, freq_max, port);
		}
		usb_transfer_schedule_ack(endpoint->in);
	}
	return USB_REQUEST_STATUS_OK;
}

usb_request_status_t usb_vendor_request_operacake_gpio_test(
	usb_endpoint_t* const endpoint,
	const usb_transfer_stage_t stage)
{
	uint16_t test_result;
	uint8_t address = endpoint->setup.value & 0xFF;
	if (stage == USB_TRANSFER_STAGE_SETUP) {
		test_result = gpio_test(address);
		endpoint->buffer[0] = test_result & 0xff;
		endpoint->buffer[1] = test_result >> 8;
		usb_transfer_schedule_block(
			endpoint->in,
			&endpoint->buffer,
			2,
			NULL,
			NULL);
		usb_transfer_schedule_ack(endpoint->out);
	}
	return USB_REQUEST_STATUS_OK;
}

usb_request_status_t usb_vendor_request_operacake_set_mode(
	usb_endpoint_t* const endpoint,
	const usb_transfer_stage_t stage)
{
	uint8_t address, mode;
	address = endpoint->setup.value & 0xFF;
	mode = endpoint->setup.index & 0xFF;
	if (stage == USB_TRANSFER_STAGE_SETUP) {
		bool result;
		result = operacake_set_mode(address, mode);
		if (!result) {
			return USB_REQUEST_STATUS_STALL;
		}
		usb_transfer_schedule_ack(endpoint->in);
	}
	return USB_REQUEST_STATUS_OK;
}

usb_request_status_t usb_vendor_request_operacake_get_mode(
	usb_endpoint_t* const endpoint,
	const usb_transfer_stage_t stage)
{
	uint8_t address;
	address = endpoint->setup.value & 0xFF;
	if (stage == USB_TRANSFER_STAGE_SETUP) {
		endpoint->buffer[0] = operacake_get_mode(address);
		usb_transfer_schedule_block(endpoint->in, endpoint->buffer, 1, NULL, NULL);
		usb_transfer_schedule_ack(endpoint->out);
	}
	return USB_REQUEST_STATUS_OK;
}

static struct operacake_dwell_times dwell_times[SCT_EVENT_COUNT];

usb_request_status_t usb_vendor_request_operacake_set_dwell_times(
	usb_endpoint_t* const endpoint,
	const usb_transfer_stage_t stage)
{
	uint16_t count;
	uint32_t dwell;
	uint8_t port;

	if (stage == USB_TRANSFER_STAGE_SETUP) {
		count = endpoint->setup.length / 5;
		if ((count == 0) || (count > SCT_EVENT_COUNT)) {
			return USB_REQUEST_STATUS_STALL;
		}
		usb_transfer_schedule_block(
			endpoint->out,
			&data,
			endpoint->setup.length,
			NULL,
			NULL);
	} else if (stage == USB_TRANSFER_STAGE_DATA) {
		count = endpoint->setup.length / 5;

		for (int i = 0; i < count; i++) {
			dwell = data[(i * 5) + 0] | (data[(i * 5) + 1] << 8) |
				(data[(i * 5) + 2] << 16) | (data[(i * 5) + 3] << 24);
			port = data[(i * 5) + 4];
			dwell_times[i].dwell = dwell;
			dwell_times[i].port = port;
		}
		operacake_sctimer_set_dwell_times(dwell_times, count);
		usb_transfer_schedule_ack(endpoint->in);
	}
	return USB_REQUEST_STATUS_OK;
}