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From: | Michael Rolnik |
Subject: | Re: [PATCH v36 11/17] target/avr: Add limited support for USART and 16 bit timer peripherals |
Date: | Wed, 27 Nov 2019 20:46:53 +0200 |
> > +/* Offsets of registers. */
> > +#define USART_DR 0x06
> > +#define USART_CSRA 0x00
> > +#define USART_CSRB 0x01
> > +#define USART_CSRC 0x02
> > +#define USART_BRRH 0x05
> > +#define USART_BRRL 0x04
> > +
> > +/* Relevant bits in regiters. */
> > +#define USART_CSRA_RXC (1 << 7)
> > +#define USART_CSRA_TXC (1 << 6)
> > +#define USART_CSRA_DRE (1 << 5)
> > +#define USART_CSRA_MPCM (1 << 0)
> > +
> > +#define USART_CSRB_RXCIE (1 << 7)
> > +#define USART_CSRB_TXCIE (1 << 6)
> > +#define USART_CSRB_DREIE (1 << 5)
> > +#define USART_CSRB_RXEN (1 << 4)
> > +#define USART_CSRB_TXEN (1 << 3)
> > +#define USART_CSRB_CSZ2 (1 << 2)
> > +#define USART_CSRB_RXB8 (1 << 1)
> > +#define USART_CSRB_TXB8 (1 << 0)
> > +
> > +#define USART_CSRC_MSEL1 (1 << 7)
> > +#define USART_CSRC_MSEL0 (1 << 6)
> > +#define USART_CSRC_PM1 (1 << 5)
> > +#define USART_CSRC_PM0 (1 << 4)
> > +#define USART_CSRC_CSZ1 (1 << 2)
> > +#define USART_CSRC_CSZ0 (1 << 1)
>
> The previous definitions can go into hw/char/avr_usart.c.
>
Why?
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