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/*
* This file is part of the pastilda project.
* hosted at http://github.com/thirdpin/pastilda
*
* Copyright (C) 2016 Third Pin LLC
* Written by Anastasiia Lazareva <a.lazareva@thirdpin.ru>
*
* 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 3 of the License, 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. If not, see <http://www.gnu.org/licenses/>.
*/
#include "usbh_host.h"
constexpr hid_kbd_config_t USB_host::kbd_config;
constexpr usbh_dev_driver_t* USB_host::device_drivers[];
USB_host *usb_host_pointer;
USB_host::USB_host(redirect _redirect_callback, control_interception _control_interception_callback)
{
usb_host_pointer = this;
redirect_callback = _redirect_callback;
control_interception_callback = _control_interception_callback;
timer_setup();
oth_hs_setup();
hid_kbd_driver_init(&kbd_config);
usbh_init(usbh_lld_stm32f4_drivers, device_drivers);
}
void USB_host::poll()
{
usbh_poll(get_time_us());
delay_ms(1);
}
void USB_host::kbd_in_message_handler(uint8_t data_len, const uint8_t *data)
{
if ((data[0] == 0x03) && data[2] == 0x35) {
control_interception_callback();
}
else {
redirect_callback((uint8_t*)data, data_len);
}
}
void USB_host::timer_setup()
{
_timer = new TIMER_ext(USB_HOST_TIMER_NUMBER);
_timer->set_prescaler_value(USB_HOST_TIMER_PRESCALER);
_timer->set_autoreload_value(USB_HOST_TIMER_PERIOD);
_timer->enable_counter();
}
void USB_host::oth_hs_setup()
{
GPIO_ext uf_p(PB15);
GPIO_ext uf_m(PB14);
uf_p.mode_setup(Mode::ALTERNATE_FUNCTION, PullMode::NO_PULL);
uf_m.mode_setup(Mode::ALTERNATE_FUNCTION, PullMode::NO_PULL);
uf_p.set_af(AF_Number::AF12);
uf_m.set_af(AF_Number::AF12);
}
//convert to 1MHz less precise timer value
//units: microseconds
uint32_t USB_host::get_time_us()
{
return ((_timer->get_counter_value()) * 100);
}
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