TinyUSB Library
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Outline
#define _CH34X_H_
#define CFG_TUH_CDC_LINE_CODING_ON_ENUM_CH34X
#define CFG_TUH_CDC_LINE_CODING_ON_ENUM_CH34X
#define CH34X_REQ_READ_VERSION
#define CH34X_REQ_WRITE_REG
#define CH34X_REQ_READ_REG
#define CH34X_REQ_SERIAL_INIT
#define CH34X_REQ_MODEM_CTRL
#define CH34X_REG_BREAK
#define CH34X_REG_PRESCALER
#define CH34X_REG_DIVISOR
#define CH34X_REG_LCR
#define CH34X_REG_LCR2
#define CH34X_REG_MCR_MSR
#define CH34X_REG_MCR_MSR2
#define CH34X_NBREAK_BITS
#define CH341_REG_0x0F
#define CH341_REG_0x2C
#define CH341_REG_0x27
#define CH34X_REG16_DIVISOR_PRESCALER
#define CH32X_REG16_LCR2_LCR
#define CH34X_BIT_RTS
#define CH34X_BIT_DTR
#define CH34X_LCR_ENABLE_RX
#define CH34X_LCR_ENABLE_TX
#define CH34X_LCR_MARK_SPACE
#define CH34X_LCR_PAR_EVEN
#define CH34X_LCR_ENABLE_PAR
#define CH34X_LCR_PAR_MASK
#define CH34X_LCR_STOP_BITS_2
#define CH34X_LCR_CS8
#define CH34X_LCR_CS7
#define CH34X_LCR_CS6
#define CH34X_LCR_CS5
#define CH34X_LCR_CS_MASK
Files
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SourceVuRaspberry Pi Pico SDK and ExamplesTinyUSB Librarysrc/class/cdc/serial/ch34x.h
 
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/* * The MIT License (MIT) * * Copyright (c) 2023 Heiko Kuester * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * * This file is part of the TinyUSB stack. *//* ... */ #ifndef _CH34X_H_ #define _CH34X_H_ // There is no official documentation for the CH34x (CH340, CH341) chips. Reference can be found // - https://github.com/WCHSoftGroup/ch341ser_linux // - https://github.com/torvalds/linux/blob/master/drivers/usb/serial/ch341.c // - https://github.com/freebsd/freebsd-src/blob/main/sys/dev/usb/serial/uchcom.c // set line_coding @ enumeration #ifdef CFG_TUH_CDC_LINE_CODING_ON_ENUM #define CFG_TUH_CDC_LINE_CODING_ON_ENUM_CH34X CFG_TUH_CDC_LINE_CODING_ON_ENUM #else // this default is necessary to work properly #define CFG_TUH_CDC_LINE_CODING_ON_ENUM_CH34X { 9600, CDC_LINE_CONDING_STOP_BITS_1, CDC_LINE_CODING_PARITY_NONE, 8 } #endif // USB requests #define CH34X_REQ_READ_VERSION 0x5F // dec 95 #define CH34X_REQ_WRITE_REG 0x9A // dec 154 #define CH34X_REQ_READ_REG 0x95 // dec 149 #define CH34X_REQ_SERIAL_INIT 0xA1 // dec 161 #define CH34X_REQ_MODEM_CTRL 0xA4 // dev 164 // registers #define CH34X_REG_BREAK 0x05 #define CH34X_REG_PRESCALER 0x12 #define CH34X_REG_DIVISOR 0x13 #define CH34X_REG_LCR 0x18 #define CH34X_REG_LCR2 0x25 #define CH34X_REG_MCR_MSR 0x06 #define CH34X_REG_MCR_MSR2 0x07 #define CH34X_NBREAK_BITS 0x01 #define CH341_REG_0x0F 0x0F // undocumented register #define CH341_REG_0x2C 0x2C // undocumented register #define CH341_REG_0x27 0x27 // hardware flow control (cts/rts) #define CH34X_REG16_DIVISOR_PRESCALER TU_U16(CH34X_REG_DIVISOR, CH34X_REG_PRESCALER) #define CH32X_REG16_LCR2_LCR TU_U16(CH34X_REG_LCR2, CH34X_REG_LCR) // modem control bits #define CH34X_BIT_RTS ( 1 << 6 ) #define CH34X_BIT_DTR ( 1 << 5 ) // line control bits #define CH34X_LCR_ENABLE_RX 0x80 #define CH34X_LCR_ENABLE_TX 0x40 #define CH34X_LCR_MARK_SPACE 0x20 #define CH34X_LCR_PAR_EVEN 0x10 #define CH34X_LCR_ENABLE_PAR 0x08 #define CH34X_LCR_PAR_MASK 0x38 // all parity bits #define CH34X_LCR_STOP_BITS_2 0x04 #define CH34X_LCR_CS8 0x03 #define CH34X_LCR_CS7 0x02 #define CH34X_LCR_CS6 0x01 #define CH34X_LCR_CS5 0x00 #define CH34X_LCR_CS_MASK 0x03 // all CSx bits 32 defines /* ... */#endif /* _CH34X_H_ */
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