RTEMS: bsps/arm/lpc176x/include/bsp/can-defs.h Source File

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can-defs.h
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1
9/*
10 * Copyright (c) 2014 Taller Technologies.
11 *
12 * @author Diaz Marcos (marcos.diaz@tallertechnologies.com)
13 * @author Daniel Chicco (daniel.chicco@tallertechnologies.com)
14 *
15 * The license and distribution terms for this file may be
16 * found in the file LICENSE in this distribution or at
17 * http://www.rtems.org/license/LICENSE.
18 */
19
20#ifndef LPC176X_TIMER_DEFS_H
21#define LPC176X_TIMER_DEFS_H
22
23#include <bsp/common-types.h>
24#include <bsp/can.h>
25
26/* CAN ACCEPTANCE FILTER */
27#define CAN_ACCEPT_BASE_ADDR 0x4003C000
28
29#define CAN_DRIVER_IS_MINOR_VALID( minor ) ( minor < CAN_DEVICES_NUMBER )
30#define CAN_DEFAULT_BAUD_RATE 1000000u
31#define CAN_DEFAULT_INTERRUPT_CONFIGURATION 0
32
33#define MAX_NUMBER_OF_CAN_BITS 25u
34#define MIN_NUMBER_OF_CAN_BITS 4u
35#define CAN_BRP_EXTRA_BIT 1u
36#define CAN_TSEG_EXTRA_BITS 3u
37#define MAX_TSEG1_TSEG2_BITS 22u
38
39#define CAN_GSR_RBS_MASK 1u
40#define CAN_CMR_RRB_MASK 4u
41
42#define CAN_MAXIMUM_DATA_SIZE 8u
43#define CAN10_MAXIMUM_ID 0x7FFu
44
48 typedef enum {
49 CAN_TSEG1,
50 CAN_TSEG2,
51 CAN_NUMBER_OF_TSEG,
52} can_tseg_number;
53
54#define CAN_BTR_TSEG1_SHIFT 16u
55#define CAN_BTR_TSEG2_SHIFT 20u
56#define CAN_BTR_SJW_SHIFT 14u
57#define CAN_BTR_BRP_SHIFT 0u
58
59#define CAN_BTR_TSEG1_MASK 0x000F0000U
60#define CAN_BTR_TSEG2_MASK 0x00700000U
61#define CAN_BTR_SJW_MASK 0x0000C000U
62#define CAN_BTR_BRP_MASK 0x000003FFU
63
64#define WRONG_BTR_VALUE 0xFFFFFFFF
65
69 typedef enum {
70 CAN_TRANSMIT1,
71 CAN_TRANSMIT2,
72 CAN_TRANSMIT3,
73 CAN_NUMBER_OF_TRANSMIT_BUFFERS
74} can_transmit_number;
75
80 typedef struct {
81 uint32_t can_status_mask;
82 uint32_t not_cc_cmr_value;
83} can_transmit_info;
84
86 typedef struct {
87 volatile uint32_t MOD;
88 volatile uint32_t CMR;
89 volatile uint32_t GSR;
90 volatile uint32_t ICR;
91 volatile uint32_t IER;
92 volatile uint32_t BTR;
93 volatile uint32_t EWL;
94 volatile uint32_t SR;
95 volatile registers_can_message receive;
96 volatile registers_can_message transmit[ CAN_NUMBER_OF_TRANSMIT_BUFFERS ];
97} can_device;
98
102 typedef enum {
103 CAN_TX_PIN,
104 CAN_RX_PIN,
105 NUMBER_OF_CAN_PINS
106} can_pin_number;
107
111 typedef struct {
112 can_device *const device;
113 const lpc176x_module module;
114 const uint32_t pconp_pin;
115 const uint32_t pins[ NUMBER_OF_CAN_PINS ];
116 const lpc176x_pin_function pinfunction;
117} can_driver_entry;
118
120 typedef struct {
121 volatile uint32_t TX_SR;
122 volatile uint32_t RX_SR;
123 volatile uint32_t MSR;
124} can_central;
125
127 typedef struct {
128 volatile uint32_t AFMR;
129 volatile uint32_t SFF_SA;
130 volatile uint32_t SFF_GRP_SA;
131 volatile uint32_t EFF_SA;
132 volatile uint32_t EFF_GRP_SA;
133 volatile uint32_t EOT;
134 volatile uint32_t LUT_ERR_ADR;
135 volatile uint32_t LUT_ERR;
136 volatile uint32_t FCANIE;
137 volatile uint32_t FCANIC0;
138 volatile uint32_t FCANIC1;
139} can_acceptance_filter;
140
144 typedef enum {
145 CANStandard = 0,
146 CANExtended = 1,
147 CANAny = 2
148} can_format;
149
153 typedef enum {
154 CANData = 0,
155 CANRemote = 1
156} can_type;
157
158#define CAN_INTERRUPT_TYPE_MASK 0x1ffu
159
163 typedef lpc176x_can_isr lpc176x_can_isr_vector[ CAN_IRQ_NUMBER ];
164
165#define CAN_MOD_RM 0x00000001U
166
167#define CAN_ACCF_AFMR_ACCOF 0x00000001U
168#define CAN_ACCF_AFMR_ACCBP 0x00000002U
169#define CAN_ACCF_AFMR_EFCAN 0x00000004U
170
171#define CAN_IER_RIE 0x000000001U
172#define CAN_IER_TIE1 0x000000002U
173#define CAN_IER_EIE 0x000000004U
174#define CAN_IER_DOIE 0x000000008U
175#define CAN_IER_WUIE 0x000000010U
176#define CAN_IER_EPIEX 0x000000020U
177#define CAN_IER_ALIEX 0x000000040U
178#define CAN_IER_BEIEX 0x000000080U
179#define CAN_IER_IDIEX 0x000000100U
180#define CAN_IER_TIE2 0x000000200U
181#define CAN_IER_TIE3 0x000000400U
182
183#endif /*LPC176X_TIMER_DEFS_H*/
can_pin_number
can_pin_number
A TX or RX pin for each CAN device .
Definition: can-defs.h:102
lpc176x_can_isr_vector
lpc176x_can_isr lpc176x_can_isr_vector[CAN_IRQ_NUMBER]
The vector with all the callbacks for the CAN isr.
Definition: can-defs.h:163
can_type
can_type
The types of message.
Definition: can-defs.h:153
can_format
can_format
The possible CAN formats for a message.
Definition: can-defs.h:144
can_transmit_number
can_transmit_number
The transmit buffers of the CAN device.
Definition: can-defs.h:69
can_tseg_number
can_tseg_number
The Time segments of a CAN bit.
Definition: can-defs.h:48
can.h
CAN controller for the mbed lpc1768 board.
lpc176x_can_isr
void(* lpc176x_can_isr)(lpc176x_can_number number)
An isr for a CAN interrupt.
Definition: can.h:92
common-types.h
Definitions types used by some devices in common.
lpc176x_module
lpc176x_module
lpc176x module representation.
Definition: common-types.h:44
MSR
#define MSR
Modem Status Register.
Definition: uart.h:93
lpc176x_pin_function
lpc176x_pin_function
Defines the functions according to the pin.
Definition: io-defs.h:68
can_acceptance_filter
Represents the acceptance filter registers.
Definition: can-defs.h:127
can_central
Represents the CAN centralized registers.
Definition: can-defs.h:120
can_device
Represents the CAN controller registers.
Definition: can-defs.h:86
can_driver_entry
A driver entry for each low level device.
Definition: can-defs.h:111
can_transmit_info
The CAN status and control masks to send a message for each transmit buffer.
Definition: can-defs.h:80
device
Definition: rtemscompat1.h:15
registers_can_message
A CAN message represented for the registers of the device.
Definition: can.h:43