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/**
* @file usbserial.cpp
* @brief Wrapper for ChibiOS's SerialUSBDriver.
*
* Copyright (C) 2020 Clyne Sullivan
*
* Distributed under the GNU GPL v3 or later. You should have received a copy of
* the GNU General Public License along with this program.
* If not, see <https://www.gnu.org/licenses/>.
*/
#include "usbserial.hpp"
#include "usbcfg.h"
constexpr static const auto sdud = &SDU1;
namespace usbserial
{
void init()
{
palSetPadMode(GPIOA, 11, PAL_MODE_ALTERNATE(10));
palSetPadMode(GPIOA, 12, PAL_MODE_ALTERNATE(10));
sduObjectInit(sdud);
sduStart(sdud, &serusbcfg);
// Reconnect bus so device can re-enumerate on reset
usbDisconnectBus(serusbcfg.usbp);
chThdSleepMilliseconds(1500);
usbStart(serusbcfg.usbp, &usbcfg);
usbConnectBus(serusbcfg.usbp);
}
bool is_active()
{
return sdud->config->usbp->state == USB_ACTIVE;
}
size_t read(void *buffer, size_t count)
{
auto bss = reinterpret_cast<BaseSequentialStream *>(sdud);
return streamRead(bss, static_cast<uint8_t *>(buffer), count);
}
size_t write(const void *buffer, size_t count)
{
auto bss = reinterpret_cast<BaseSequentialStream *>(sdud);
return streamWrite(bss, static_cast<const uint8_t *>(buffer), count);
}
}
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