RTEMS  5.1
at91rm9200_usart.h
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1 
9 /*
10  * Atmel AT91RM9200_USART Register definitions, used in KIT637_V6 (CSB637)
11  *
12  * Copyright (c) 2003 by Cogent Computer Systems
13  * Written by Mike Kelly <mike@cogcomp.com>
14  *
15  * Modified by Fernando Nicodemos <fgnicodemos@terra.com.br>
16  * from NCB - Sistemas Embarcados Ltda. (Brazil)
17  *
18  * The license and distribution terms for this file may be
19  * found in the file LICENSE in this distribution or at
20  * http://www.rtems.org/license/LICENSE.
21 */
22 
23 #ifndef __AT91RM9200_USART_H__
24 #define __AT91RM9200_USART_H__
25 
26 #include <bits.h>
27 
28 /* Register Offsets */
29 #define US_CR 0x00 /* Control Register */
30 #define US_MR 0x04 /* Mode Register */
31 #define US_IER 0x08 /* Interrupt Enable Register */
32 #define US_IDR 0x0C /* Interrupt Disable Register */
33 #define US_IMR 0x10 /* Interrupt Mask Register */
34 #define US_SR 0x14 /* Channel Status Register */
35 #define US_RHR 0x18 /* Receiver Holding Register */
36 #define US_THR 0x1C /* Transmitter Holding Register */
37 #define US_BRGR 0x20 /* Baud Rate Generator Register */
38 #define US_RTOR 0x24 /* Receiver Time-out Register */
39 #define US_TTGR 0x28 /* Transmitter Timeguard Register */
40 #define US_C1R 0x40 /* Chip ID1 Register - FI DI Ratio Register */
41 #define US_C2R 0x44 /* Chip ID2 Register - Number of Erros Register */
42 #define US_FNTR 0x48 /* Force NTRST Register */
43 #define US_IF 0x4C /* IrDA Filter Register */
44 
45 /* Bit Defines */
46 /* Control Register, US_CR, Offset 0x00 */
47 #define US_CR_RSTRX BIT2 /* 1 = Reset and disable receiver */
48 #define US_CR_RSTTX BIT3 /* 1 = Reset and disable transmitter */
49 #define US_CR_RXEN BIT4 /* 1 = Receiver enable */
50 #define US_CR_RXDIS BIT5 /* 1 = Receiver disable */
51 #define US_CR_TXEN BIT6 /* 1 = Transmitter enable */
52 #define US_CR_TXDIS BIT7 /* 1 = Transmitter disable */
53 #define US_CR_RSTSTA BIT8 /* 1 = Reset PARE, FRAME and OVRE in DBGU_SR. */
54 #define US_CR_STTBRK BIT9 /* 1 = Start transmission of a Break */
55 #define US_CR_STPBRK BIT10 /* 1 = Stop transmission of a Break */
56 #define US_CR_STTTO BIT11 /* 1 = Start Time-out */
57 #define US_CR_SENDA BIT12 /* 1 = Send Address - MDROP mode only */
58 #define US_CR_RSTIT BIT13 /* 1 = Reset Iteration */
59 #define US_CR_RSTNACK BIT14 /* 1 = Reset Non Acknowledge */
60 #define US_CR_RETTO BIT15 /* 1 = Restart Time-out */
61 #define US_CR_DTREN BIT16 /* 1 = Data Terminal Ready Enable - AT91RM9200 only */
62 #define US_CR_DTRDIS BIT17 /* 1 = Data Terminal Ready Disable - AT91RM9200 only */
63 #define US_CR_RTSEN BIT18 /* 1 = Request To Send Enable */
64 #define US_CR_RTSDIS BIT19 /* 1 = Request To Send Disable */
65 
66 
67 /* Mode Register. US_MR. Offset 0x04 */
68 #define US_MR_USMODE (0xF << 0) /* Mode of the USART */
69 #define US_MR_USMODE_NORMAL 0
70 #define US_MR_USMODE_RS485 1
71 #define US_MR_USMODE_HWHS 2
72 #define US_MR_USMODE_MODEM 3
73 #define US_MR_USMODE_ISO7816_T0 4
74 #define US_MR_USMODE_ISO7816_T1 6
75 #define US_MR_USMODE_IRDA 8
76 #define US_MR_USCLKS (3 << 4) /* Clock Selection */
77 #define US_MR_USCLKS_MCK (0 << 4)
78 #define US_MR_USCLKS_MCK_DIV8 (1 << 4)
79 #define US_MR_USCLKS_SCK (3 << 4)
80 #define US_MR_CHRL (3 << 6) /* Character Length */
81 #define US_MR_CHRL_5 (0 << 6)
82 #define US_MR_CHRL_6 (1 << 6)
83 #define US_MR_CHRL_7 (2 << 6)
84 #define US_MR_CHRL_8 (3 << 6)
85 #define US_MR_SYNC (1 << 8) /* Synchronous Mode Select */
86 #define US_MR_PAR (7 << 9) /* Parity Type */
87 #define US_MR_PAR_EVEN (0 << 9) /* Even Parity */
88 #define US_MR_PAR_ODD (1 << 9) /* Odd Parity */
89 #define US_MR_PAR_SPACE (2 << 9) /* Parity forced to 0 (Space) */
90 #define US_MR_PAR_MARK (3 << 9) /* Parity forced to 1 (Mark) */
91 #define US_MR_PAR_NONE (4 << 9) /* No Parity */
92 #define US_MR_PAR_MDROP (6 << 9) /* Multi-drop mode */
93 #define US_MR_NBSTOP (3 << 12) /* Number of Stop Bits */
94 #define US_MR_NBSTOP_1 (0 << 12)
95 #define US_MR_NBSTOP_1_5 (1 << 12)
96 #define US_MR_NBSTOP_2 (2 << 12)
97 #define US_MR_CHMODE (3 << 14) /* Channel Mode */
98 #define US_MR_CHMODE_NORM (0 << 14) /* Normal Mode */
99 #define US_MR_CHMODE_AUTO (1 << 14) /* Auto Echo: RXD drives TXD */
100 #define US_MR_CHMODE_LOC (2 << 14) /* Local Loopback: TXD drives RXD */
101 #define US_MR_CHMODE_REM (3 << 14) /* Remote Loopback: RXD pin connected to TXD pin. */
102 #define US_MR_MSBF (1 << 16) /* Bit Order */
103 #define US_MR_MODE9 (1 << 17) /* 9-bit Character Length */
104 #define US_MR_CLKO (1 << 18) /* Clock Output Select */
105 #define US_MR_OVER (1 << 19) /* Oversampling Mode */
106 #define US_MR_INACK (1 << 20) /* Inhibit Non Acknowledge */
107 #define US_MR_DSNACK (1 << 21) /* Disable Successive NACK */
108 #define US_MR_MAX_ITER (7 << 24) /* Max Iterations */
109 #define US_MR_FILTER (1 << 28) /* Infrared Receive Line Filter */
110 
111 /* Interrupt Enable Register, US_IER, Offset 0x08 */
112 /* Interrupt Disable Register, US_IDR, Offset 0x0C */
113 /* Interrupt Mask Register, US_IMR, Offset 0x10 */
114 /* Channel Status Register, US_SR, Offset 0x14 */
115 #define US_IER_RXRDY BIT0 /* RXRDY Interrupt */
116 #define US_IER_TXRDY BIT1 /* TXRDY Interrupt */
117 #define US_IER_RXBRK BIT2 /* End of Receive Transfer Interrupt */
118 #define US_IER_ENDRX BIT3 /* End of Receiver Transfer */
119 //#define US_IER_ENDTX BIT4 /* End of Transmit Interrupt */
120 #define US_IER_OVRE BIT5 /* Overrun Interrupt */
121 #define US_IER_FRAME BIT6 /* Framing Error Interrupt */
122 #define US_IER_PARE BIT7 /* Parity Error */
123 #define US_IER_TIMEOUT BIT8 /* Receiver Time-out */
124 #define US_IER_TXEMPTY BIT9 /* Transmitter Empty */
125 #define US_IER_ITERATION BIT10 /* Max number of Repetitions Reached */
126 #define US_IER_TXBUFE BIT11 /* Transmission Buffer Empty */
127 #define US_IER_RXBUFF BIT12 /* Reception Buffer Full */
128 #define US_IER_NACK BIT13 /* Non Acknowledge */
129 #define US_IER_RIIC BIT16 /* Ring Indicator Input Change [AT91RM9200 only] */
130 #define US_IER_DSRIC BIT17 /* Data Set Ready Input Change [AT91RM9200 only] */
131 #define US_IER_DCDIC BIT18 /* Data Carrier Detect Input Change [AT91RM9200 only] */
132 #define US_IER_CTSIC BIT19 /* Clear to Send Input Change */
133 #define US_IER_ALL 0xC0001AFB /* all assigned bits */
134 
135 /* FORCE_NTRST Register, US_FNTR, Offset 0x48 */
136 #define US_FNTR_NTRST BIT0 /* 1 = Force NTRST low in JTAG */
137 
138 typedef struct {
139  volatile uint32_t cr;
140  volatile uint32_t mr;
141  volatile uint32_t ier;
142  volatile uint32_t idr;
143  volatile uint32_t imr;
144  volatile uint32_t sr;
145  volatile uint32_t rhr;
146  volatile uint32_t thr;
147  volatile uint32_t brgr;
148  volatile uint32_t _res0[7];
149  volatile uint32_t cidr;
150  volatile uint32_t exid;
151  volatile uint32_t fnr;
152 } at91rm9200_usart_regs_t;
153 
154 #endif /* __AT91RM9200_USART_H__ */
bits.h
Contains Defined Bits.
at91rm9200_usart_regs_t
Definition: at91rm9200_usart.h:138
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