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