diff options
| author | IngHK <[email protected]> | 2024-01-17 16:04:31 +0100 |
|---|---|---|
| committer | IngHK <[email protected]> | 2024-01-17 16:04:31 +0100 |
| commit | 3968a0fff87c794266284af7901e334d122e894c (patch) | |
| tree | e169f9f728b41d62845de528527c591ccce6e8ea /src/class/cdc/serial | |
| parent | f221c0fb6683fc552febbb9a52300d66f031d275 (diff) | |
implemented ch34x_set_line_coding() and some code cleanup
Diffstat (limited to 'src/class/cdc/serial')
| -rw-r--r-- | src/class/cdc/serial/ch34x.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/class/cdc/serial/ch34x.h b/src/class/cdc/serial/ch34x.h index 54b5b3560..b4ed7420c 100644 --- a/src/class/cdc/serial/ch34x.h +++ b/src/class/cdc/serial/ch34x.h @@ -27,9 +27,13 @@ #ifndef _CH34X_H_ #define _CH34X_H_ +// For simplicity, only the name CH34X is used here, +// but specifically only CH340 and CH341 are supported. + // 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 +// - 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 @@ -45,6 +49,7 @@ #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 @@ -64,10 +69,12 @@ #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 #endif /* _CH34X_H_ */ |