diff options
Diffstat (limited to 'src/class/cdc/serial')
| -rw-r--r-- | src/class/cdc/serial/ch34x.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/class/cdc/serial/ch34x.h b/src/class/cdc/serial/ch34x.h index 557e093a9..54b5b3560 100644 --- a/src/class/cdc/serial/ch34x.h +++ b/src/class/cdc/serial/ch34x.h @@ -27,6 +27,10 @@ #ifndef _CH34X_H_ #define _CH34X_H_ +// There is no official documentation for the CH34x chips. Reference can be found +// - https://github.com/WCHSoftGroup/ch341ser_linux +// - https://github.com/torvalds/linux/blob/master/drivers/usb/serial/ch341.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 @@ -41,6 +45,15 @@ #define CH34X_REQ_SERIAL_INIT 0xA1 // dec 161 #define CH34X_REQ_MODEM_CTRL 0xA4 // dev 164 +#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 + // modem control bits #define CH34X_BIT_RTS ( 1 << 6 ) #define CH34X_BIT_DTR ( 1 << 5 ) |