2 * Copyright (c) 2005 Olivier Houchard. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #ifndef AT91USARTREG_H_
28 #define AT91USARTREG_H_
30 #define USART_CR 0x00 /* Control register */
31 #define USART_CR_RSTRX (1UL << 2) /* Reset Receiver */
32 #define USART_CR_RSTTX (1UL << 3) /* Reset Transmitter */
33 #define USART_CR_RXEN (1UL << 4) /* Receiver Enable */
34 #define USART_CR_RXDIS (1UL << 5) /* Receiver Disable */
35 #define USART_CR_TXEN (1UL << 6) /* Transmitter Enable */
36 #define USART_CR_TXDIS (1UL << 7) /* Transmitter Disable */
37 #define USART_CR_RSTSTA (1UL << 8) /* Reset Status Bits */
38 #define USART_CR_STTBRK (1UL << 9) /* Start Break */
39 #define USART_CR_STPBRK (1UL << 10) /* Stop Break */
40 #define USART_CR_STTTO (1UL << 11) /* Start Time-out */
41 #define USART_CR_SENDA (1UL << 12) /* Send Address */
42 #define USART_CR_RSTIT (1UL << 13) /* Reset Iterations */
43 #define USART_CR_RSTNACK (1UL << 14) /* Reset Non Acknowledge */
44 #define USART_CR_RETTO (1UL << 15) /* Rearm Time-out */
45 #define USART_CR_DTREN (1UL << 16) /* Data Terminal ready Enable */
46 #define USART_CR_DTRDIS (1UL << 17) /* Data Terminal ready Disable */
47 #define USART_CR_RTSEN (1UL << 18) /* Request to Send enable */
48 #define USART_CR_RTSDIS (1UL << 19) /* Request to Send Disable */
50 #define USART_MR 0x04 /* Mode register */
51 #define USART_MR_MODE_NORMAL 0 /* Normal/Async/3-wire rs-232 */
52 #define USART_MR_MODE_RS485 1 /* RS485 */
53 #define USART_MR_MODE_HWFLOW 2 /* Hardware flow control/handshake */
54 #define USART_MR_MODE_MODEM 3 /* Full modem protocol */
55 #define USART_MR_MODE_ISO7816T0 4 /* ISO7816 T=0 */
56 #define USART_MR_MODE_ISO7816T1 6 /* ISO7816 T=1 */
57 #define USART_MR_MODE_IRDA 8 /* IrDA mode */
58 #define USART_MR_USCLKS_MCK (0U << 4) /* use MCK for baudclock */
59 #define USART_MR_USCLKS_MCKDIV (1U << 4) /* use MCK/DIV for baudclock */
60 #define USART_MR_USCLKS_SCK (3U << 4) /* use SCK (ext) for baudclock */
61 #define USART_MR_CHRL_5BITS (0U << 6)
62 #define USART_MR_CHRL_6BITS (1U << 6)
63 #define USART_MR_CHRL_7BITS (2U << 6)
64 #define USART_MR_CHRL_8BITS (3U << 6)
65 #define USART_MR_SYNC (1U << 8) /* 1 -> sync 0 -> async */
66 #define USART_MR_PAR_EVEN (0U << 9)
67 #define USART_MR_PAR_ODD (1U << 9)
68 #define USART_MR_PAR_SPACE (2U << 9)
69 #define USART_MR_PAR_MARK (3U << 9)
70 #define USART_MR_PAR_NONE (4U << 9)
71 #define USART_MR_PAR_MULTIDROP (6U << 9)
72 #define USART_MR_NBSTOP_1 (0U << 12)
73 #define USART_MR_NBSTOP_1_5 (1U << 12)
74 #define USART_MR_NBSTOP_2 (2U << 12)
75 #define USART_MR_CHMODE_NORMAL (0U << 14)
76 #define USART_MR_CHMODE_ECHO (1U << 14)
77 #define USART_MR_CHMODE_LOOP (2U << 14)
78 #define USART_MR_CHMODE_REMLOOP (3U << 14)
79 #define USART_MR_MSBF (1U << 16)
80 #define USART_MR_MODE9 (1U << 17)
81 #define USART_MR_CKLO_SCK (1U << 18)
82 #define USART_MR_OVER16 0
83 #define USART_MR_OVER8 (1U << 19)
84 #define USART_MR_INACK (1U << 20) /* Inhibit NACK generation */
85 #define USART_MR_DSNACK (1U << 21) /* Disable Successive NACK */
86 #define USART_MR_MAXITERATION(x) ((x) << 24)
87 #define USART_MR_FILTER (1U << 28) /* Filters for Ir lines */
89 #define USART_IER 0x08 /* Interrupt enable register */
90 #define USART_IDR 0x0c /* Interrupt disable register */
91 #define USART_IMR 0x10 /* Interrupt mask register */
92 #define USART_CSR 0x14 /* Channel status register */
94 #define USART_CSR_RXRDY (1UL << 0) /* Receiver ready */
95 #define USART_CSR_TXRDY (1UL << 1) /* Transmitter ready */
96 #define USART_CSR_RXBRK (1UL << 2) /* Break received */
97 #define USART_CSR_ENDRX (1UL << 3) /* End of Transfer RX from PDC */
98 #define USART_CSR_ENDTX (1UL << 4) /* End of Transfer TX from PDC */
99 #define USART_CSR_OVRE (1UL << 5) /* Overrun error */
100 #define USART_CSR_FRAME (1UL << 6) /* Framing error */
101 #define USART_CSR_PARE (1UL << 7) /* Parity Error */
102 #define USART_CSR_TIMEOUT (1UL << 8) /* Timeout since start-timeout */
103 #define USART_CSR_TXEMPTY (1UL << 9) /* Transmitter empty */
104 #define USART_CSR_ITERATION (1UL << 10) /* max repetitions since RSIT */
105 #define USART_CSR_TXBUFE (1UL << 11) /* Buffer empty from PDC */
106 #define USART_CSR_RXBUFF (1UL << 12) /* Buffer full from PDC */
107 #define USART_CSR_NACK (1UL << 13) /* NACK since last RSTNACK */
108 #define USART_CSR_RIIC (1UL << 16) /* RI delta since last csr read */
109 #define USART_CSR_DSRIC (1UL << 17) /* DSR delta */
110 #define USART_CSR_DCDIC (1UL << 18) /* DCD delta */
111 #define USART_CSR_CTSIC (1UL << 19) /* CTS delta */
112 #define USART_CSR_RI (1UL << 20) /* RI status */
113 #define USART_CSR_DSR (1UL << 21) /* DSR status */
114 #define USART_CSR_DCD (1UL << 22) /* DCD status */
115 #define USART_CSR_CTS (1UL << 23) /* CTS status */
117 #define USART_RHR 0x18 /* Receiver holding register */
118 #define USART_THR 0x1c /* Transmitter holding register */
119 #define USART_BRGR 0x20 /* Baud rate generator register */
120 #define USART_RTOR 0x24 /* Receiver time-out register */
121 #define USART_TTR 0x28 /* Transmitter timeguard register */
122 /* 0x2c to 0x3c reserved */
123 #define USART_FDRR 0x40 /* FI DI ratio register */
124 #define USART_NER 0x44 /* Number of errors register */
126 #define USART_IFR 0x48 /* IrDA filter register */
128 #endif /* AT91RM92REG_H_ */