mirror of
https://github.com/armel/uv-k1-k5v3-firmware-custom.git
synced 2026-10-02 03:15:37 +00:00
62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/* Copyright 2025 muzkr https://github.com/muzkr
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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#include "driver/vcp.h"
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#include "usb_config.h"
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#include "py32f071_ll_bus.h"
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uint8_t VCP_RxBuf[VCP_RX_BUF_SIZE];
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volatile uint32_t VCP_RxBufPointer = 0;
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void VCP_Init()
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{
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LL_APB1_GRP2_EnableClock(LL_APB1_GRP2_PERIPH_SYSCFG);
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LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOA); // PA12:11
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LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_USBD);
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cdc_acm_rx_buf_t rx_buf = {
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.buf = VCP_RxBuf,
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.size = sizeof(VCP_RxBuf),
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.write_pointer = &VCP_RxBufPointer,
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};
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cdc_acm_init(rx_buf);
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NVIC_SetPriority(USBD_IRQn, 3);
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NVIC_EnableIRQ(USBD_IRQn);
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}
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bool VCP_ScreenshotPing(void)
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{
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static uint32_t read_ptr = 0;
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uint32_t write_ptr = VCP_RxBufPointer;
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while (read_ptr != write_ptr)
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{
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uint8_t b = VCP_RxBuf[read_ptr];
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read_ptr++;
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if (read_ptr >= VCP_RX_BUF_SIZE)
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read_ptr = 0;
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if (b == 0x55)
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{
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return true;
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}
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}
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return false;
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}
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