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#include <string.h> |
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#include "ch32v30x.h" |
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#include "ch32v30x_usb.h" |
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#include "ch32v30x_usbhs_device.h" |
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#include "usb_desc.h" |
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#include "vcom_serial.h" |
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volatile VCOM Vcom = {.in_ready = 1}; |
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VCOM_LINE_CODING LineCfg = {115200, 0, 0, 8}; // Baud rate, stop bits, parity bits, data bits |
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void VCOM_Init(void) |
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{ |
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GPIO_InitTypeDef GPIO_InitStructure; |
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USART_InitTypeDef USART_InitStructure; |
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); |
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE); |
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; |
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; |
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; |
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GPIO_Init(GPIOA, &GPIO_InitStructure); // PA2 => USART2_TX |
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; |
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; |
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GPIO_Init(GPIOA, &GPIO_InitStructure); // PA3 => USART2_RX |
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USART_InitStructure.USART_BaudRate = 115200; |
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USART_InitStructure.USART_WordLength = USART_WordLength_8b; |
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USART_InitStructure.USART_StopBits = USART_StopBits_1; |
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USART_InitStructure.USART_Parity = USART_Parity_No; |
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USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; |
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USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; |
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USART_Init(USART2, &USART_InitStructure); |
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USART_Cmd(USART2, ENABLE); |
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USART_ITConfig(USART2, USART_IT_RXNE, ENABLE); |
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NVIC_EnableIRQ(USART2_IRQn); |
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} |
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void VCOM_LineCoding(VCOM_LINE_CODING * LineCfgx) |
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{ |
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USART_InitTypeDef USART_InitStructure; |
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switch(LineCfgx->u8DataBits) |
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{ |
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case 8: USART_InitStructure.USART_WordLength = USART_WordLength_8b; break; |
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default: USART_InitStructure.USART_WordLength = USART_WordLength_8b; break; |
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} |
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switch(LineCfgx->u8ParityType) |
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{ |
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case 0: USART_InitStructure.USART_Parity = USART_Parity_No; break; |
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case 1: USART_InitStructure.USART_Parity = USART_Parity_Odd; |
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USART_InitStructure.USART_WordLength = USART_WordLength_9b; break; |
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case 2: USART_InitStructure.USART_Parity = USART_Parity_Even; |
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USART_InitStructure.USART_WordLength = USART_WordLength_9b; break; |
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default: USART_InitStructure.USART_Parity = USART_Parity_No; break; |
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} |
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switch(LineCfgx->u8CharFormat) |
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{ |
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case 0: USART_InitStructure.USART_StopBits = USART_StopBits_1; break; |
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case 1: USART_InitStructure.USART_StopBits = USART_StopBits_1_5; break; |
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case 2: USART_InitStructure.USART_StopBits = USART_StopBits_2; break; |
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default: USART_InitStructure.USART_StopBits = USART_StopBits_1; break; |
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} |
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USART_InitStructure.USART_BaudRate = LineCfgx->u32DTERate; |
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USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; |
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USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; |
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__disable_irq(); |
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// Reset software FIFO |
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Vcom.rx_bytes = 0; |
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Vcom.rx_wrptr = 0; |
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Vcom.rx_rdptr = 0; |
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Vcom.tx_bytes = 0; |
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Vcom.tx_wrptr = 0; |
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Vcom.tx_rdptr = 0; |
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USART_Init(USART2, &USART_InitStructure); |
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__enable_irq(); |
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} |
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void USART2_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast"))); |
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void USART2_IRQHandler(void) |
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{ |
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if(USART_GetITStatus(USART2, USART_IT_RXNE) != RESET) |
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{ |
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uint16_t chr = USART_ReceiveData(USART2); |
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if(Vcom.rx_bytes < RX_BUFF_SIZE) |
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{ |
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Vcom.rx_buff[Vcom.rx_wrptr++] = chr; |
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if(Vcom.rx_wrptr == RX_BUFF_SIZE) |
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Vcom.rx_wrptr = 0; |
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Vcom.rx_bytes++; |
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} |
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} |
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if(USART_GetITStatus(USART2, USART_IT_TXE) != RESET) |
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{ |
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if(Vcom.tx_bytes) |
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{ |
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USART_SendData(USART2, Vcom.tx_buff[Vcom.tx_rdptr++]); |
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if(Vcom.tx_rdptr == TX_BUFF_SIZE) |
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Vcom.tx_rdptr = 0; |
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Vcom.tx_bytes--; |
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} |
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else |
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{ |
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/* No more data, just stop Tx (Stop work) */ |
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USART_ITConfig(USART2, USART_IT_TXE, DISABLE); |
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} |
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} |
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} |
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void VCOM_TransferData(void) |
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{ |
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if(Vcom.in_ready) // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> |
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{ |
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if(Vcom.rx_bytes) // <EFBFBD><EFBFBD><EFBFBD>µ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><EFBFBD>Է<EFBFBD><EFBFBD><EFBFBD> |
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{ |
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Vcom.in_bytes = Vcom.rx_bytes; |
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if(Vcom.in_bytes > CDC_BULK_IN_SZ_HS) |
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Vcom.in_bytes = CDC_BULK_IN_SZ_HS; |
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for(int i = 0; i < Vcom.in_bytes; i++) |
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{ |
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Vcom.in_buff[i] = Vcom.rx_buff[Vcom.rx_rdptr++]; |
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if(Vcom.rx_rdptr >= RX_BUFF_SIZE) |
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Vcom.rx_rdptr = 0; |
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} |
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__disable_irq(); |
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Vcom.rx_bytes -= Vcom.in_bytes; |
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__enable_irq(); |
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Vcom.in_ready = 0; |
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memcpy(USBHS_EP3_Tx_Buf, (uint8_t *)Vcom.in_buff, Vcom.in_bytes); |
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USBHSD->UEP3_TX_LEN = Vcom.in_bytes; |
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USBHSD->UEP3_TX_CTRL = (USBHSD->UEP3_TX_CTRL & ~USBHS_UEP_T_RES_MASK) | USBHS_UEP_T_RES_ACK; |
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} |
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else |
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{ |
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/* Prepare a zero packet if previous packet size is CDC_BULK_IN_SZ and |
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no more data to send at this moment to note Host the transfer has been done */ |
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if(Vcom.in_bytes == CDC_BULK_IN_SZ_HS) |
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{ |
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Vcom.in_bytes = 0; |
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USBHSD->UEP3_TX_LEN = 0; |
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USBHSD->UEP3_TX_CTRL = (USBHSD->UEP3_TX_CTRL & ~USBHS_UEP_T_RES_MASK) | USBHS_UEP_T_RES_ACK; |
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} |
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} |
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} |
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/* <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>յ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><EFBFBD><EFBFBD> tx_buff <EFBFBD>ܹ<EFBFBD>װ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */ |
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if(Vcom.out_ready && (Vcom.out_bytes <= TX_BUFF_SIZE - Vcom.tx_bytes)) |
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{ |
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for(int i = 0; i < Vcom.out_bytes; i++) |
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{ |
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Vcom.tx_buff[Vcom.tx_wrptr++] = Vcom.out_buff[i]; |
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if(Vcom.tx_wrptr >= TX_BUFF_SIZE) |
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Vcom.tx_wrptr = 0; |
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} |
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__disable_irq(); |
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Vcom.tx_bytes += Vcom.out_bytes; |
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__enable_irq(); |
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Vcom.out_ready = 0; |
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/* Ready for next BULK OUT */ |
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USBHSD->UEP3_RX_CTRL = (USBHSD->UEP3_RX_CTRL & ~USBHS_UEP_R_RES_MASK) | USBHS_UEP_R_RES_ACK; |
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} |
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if(Vcom.tx_bytes && ((USART2->CTLR1 & USART_CTLR1_TXEIE) == 0)) |
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{ |
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USART_ITConfig(USART2, USART_IT_TXE, ENABLE); |
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} |
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}
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