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Merge pull request #22 from autowp/master

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Add "const" to pData
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Lowaichung
2016-01-20 09:12:57 +08:00
parent c73fb02107 3adc45eca9
commit bb5e32ae0a
15 changed files with 900 additions and 1793 deletions
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License.txt → LICENSE.md
+5 -4
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@@ -1,6 +1,7 @@
The MIT License (MIT)
Copyright (c) 2013 Seeed Technology Inc.
Copyright (c) 2016 Dmitry
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
@@ -9,13 +10,13 @@ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
README.md
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@@ -1,7 +1,5 @@
CAN BUS Shield
Arduino MCP2515 CAN interface library
---------------------------------------------------------
[![CAN BUS Shield](http://www.seeedstudio.com/depot/images/1130300211.jpg)](http://www.seeedstudio.com/depot/CANBUS-Shield-p-2256.html?cPath=19_88)
<br>
@@ -11,9 +9,6 @@ CAN-BUS is a common industrial bus because of its long travel distance, medium c
- SPI Interface up to 10 MHz
- Standard (11 bit) and extended (29 bit) data and remote frames
- Two receive buffers with prioritized message storage
- Industrial standard 9 pin sub-D connector
- Two LED indicators
<br>
@@ -21,40 +16,71 @@ CAN-BUS is a common industrial bus because of its long travel distance, medium c
## 1. Set the BaudRate
## 1. Initialization
This function is used to initialize the baudrate of the CAN Bus system.
The available baudrates are listed as follws:
#define CAN_5KBPS 1
#define CAN_10KBPS 2
#define CAN_20KBPS 3
#define CAN_31K25BPS 4
#define CAN_33KBPS 5
#define CAN_40KBPS 6
#define CAN_50KBPS 7
#define CAN_80KBPS 8
#define CAN_83K3BPS 9
#define CAN_95KBPS 10
#define CAN_100KBPS 11
#define CAN_125KBPS 12
#define CAN_200KBPS 13
#define CAN_250KBPS 14
#define CAN_500KBPS 15
#define CAN_1000KBPS 16
To create connection with MCP2515 provide pin number where SPI CS is connected (10 by default) and mode
The available modes are listed as follows:
```C++
MCP_CAN::MODE_NORMAL,
MCP_CAN::MODE_LOOPBACK,
MCP_CAN::MODE_LISTENONLY
```
To work with network set baudrate.
The available baudrates are listed as follows:
```C++
enum CAN_SPEED {
CAN_5KBPS,
CAN_10KBPS,
CAN_20KBPS,
CAN_31K25BPS,
CAN_33KBPS,
CAN_40KBPS,
CAN_50KBPS,
CAN_80KBPS,
CAN_83K3BPS,
CAN_95KBPS,
CAN_100KBPS,
CAN_125KBPS,
CAN_200KBPS,
CAN_250KBPS,
CAN_500KBPS,
CAN_1000KBPS
};
```
<br>
Example of initialization
```C++
MCP_CAN mcp2515(10, MCP_CAN::MODE_LOOPBACK);
mcp2515.begin(CAN_125KBPS);
```
<br>
##2. Set Receive Mask and Filter
Note: To transfer data on high speed of CAN interface via UART dont forget to update UART baudrate as necessary.
##2. Frame data format
Library uses Linux-like structure to store can frames;
```C++
struct can_frame {
uint32_t can_id; /* 32 bit CAN_ID + EFF/RTR/ERR flags */
uint8_t can_dlc;
uint8_t data[8];
};
```
For additional information see [SocketCAN](https://www.kernel.org/doc/Documentation/networking/can.txt)
##3. Set Receive Mask and Filter
There are 2 receive mask registers and 5 filter registers on the controller chip that guarantee you get data from the target device. They are useful especially in a large network consisting of numerous nodes.
We provide two functions for you to utilize these mask and filter registers. They are:
init_Mask(unsigned char num, unsigned char ext, unsigned char ulData);
init_Filt(unsigned char num, unsigned char ext, unsigned char ulData);
```C++
init_Mask(unsigned char num, unsigned char ext, unsigned char ulData);
init_Filt(unsigned char num, unsigned char ext, unsigned char ulData);
```
**num** represents which register to use. You can fill 0 or 1 for mask and 0 to 5 for filter.
@@ -65,72 +91,107 @@ We provide two functions for you to utilize these mask and filter registers. The
<br>
## 3. Check Receive
The MCP2515 can operate in either a polled mode, where the software checks for a received frame, or using additional pins to signal that a frame has been received or transmit completed. Use the following function to poll for received frames.
## 4. Send Data
```C++
MCP_CAN::ERROR sendMessage(const MCP_CAN::TXBn txbn, const struct can_frame *frame);
MCP_CAN::ERROR sendMessage(const struct can_frame *frame);
```
INT8U MCP_CAN::checkReceive(void);
The function will return 1 if a frame arrives, and 0 if nothing arrives.
<br>
## 4. Get CAN ID
When some data arrive, you can use the following function to get the CAN ID of the "send" node.
INT32U MCP_CAN::getCanId(void);
<br>
## 5. Send Data
CAN.sendMsgBuf(INT8U id, INT8U ext, INT8U len, data_buf);
This is a function to send data onto the bus. In which:
**id** represents where the data come from.
**ext** represents the status of the frame. '0' means standard frame. '1' means extended frame.
**len** represents the length of this frame.
**data_buf** is the content of this message.
This is a function to send data onto the bus.
For example, In the 'send' example, we have:
<pre>
unsigned char stmp[8] = {0, 1, 2, 3, 4, 5, 6, 7};
```C++
struct can_frame frame;
frame.can_id = 0x000;
frame.can_dlc = 4;
frame.data[0] = 0xFF;
frame.data[1] = 0xFF;
frame.data[2] = 0xFF;
frame.data[3] = 0xFF;
CAN.sendMsgBuf(0x00, 0, 8, stmp); //send out the message 'stmp' to the bus and tell other devices this is a standard frame from 0x00.
</pre>
/* send out the message to the bus and
tell other devices this is a standard frame from 0x00. */
mcp2515.sendMessage(&frame);
```
```C++
struct can_frame frame;
frame.can_id = 0x12345678 | CAN_EFF_MASK;
frame.can_dlc = 2;
frame.data[0] = 0xFF;
frame.data[1] = 0xFF;
/* send out the message to the bus using second TX buffer and
tell other devices this is a extended frame from 0x12345678. */
mcp2515.sendMessage(MCP_CAN::TXB1, &frame);
```
<br>
## 6. Receive Data
## 5. Receive Data
The following function is used to receive data on the 'receive' node:
CAN.readMsgBuf(unsigned char len, unsigned char buf);
```C++
MCP_CAN::ERROR readMessage(const MCP_CAN::RXBn rxbn, struct can_frame *frame);
MCP_CAN::ERROR readMessage(struct can_frame *frame);
```
In conditions that masks and filters have been set. This function can only get frames that meet the requirements of masks and filters.
**len** represents the data length.
You can choise one of two method to receive: interrup-based and polling
**buf** is where you store the data.
Example of poll read
```C++
struct can_frame frame;
void loop() {
if (mcp2515.readMessage(&frame) == MCP_CAN::ERROR_OK) {
// frame contains received message
}
}
```
Example of interrupt based read
```C++
bool interrupt = false;
struct can_frame frame;
void irqHandler() {
interrupt = true;
}
void setup() {
...
attachInterrupt(0, irqHandler, FALLING);
}
void loop() {
if (interrupt) {
interrupt = false;
uint8_t irq = mcp2515.getInterrupts();
if (irq & MCP_CAN::CANINTF_RX0IF) {
if (mcp2515.readMessage(MCP_CAN::RXB0, &frame) == MCP_CAN::ERROR_OK) {
// frame contains received from RXB0 message
}
}
if (irq & MCP_CAN::CANINTF_RX1IF) {
if (mcp2515.readMessage(MCP_CAN::RXB1, &frame) == MCP_CAN::ERROR_OK) {
// frame contains received from RXB1 message
}
}
}
}
```
<br>
## 7. Check additional flags
When frame is received you may check whether it was remote request and whether it was an extended (29bit) frame.
CAN.isRemoteRequest();
CAN.isExtendedFrame();
**return value** is '0' for a negative response and '1' for a positive
## 6. Examples
Example implementation of CanHacker (lawicel) protocol based device: [https://github.com/autowp/can-usb](https://github.com/autowp/can-usb)
<br>
For more information, please refer to [wiki page](http://www.seeedstudio.com/wiki/CAN-BUS_Shield).
@@ -138,8 +199,9 @@ For more information, please refer to [wiki page](http://www.seeedstudio.com/wik
----
This software is written by loovee ([luweicong@seeed.cc](luweicong@seeed.cc "luweicong@seeed.cc")) for seeed studio<br>
and is licensed under [The MIT License](http://opensource.org/licenses/mit-license.php). Check License.txt for more information.<br>
This software is written by loovee ([luweicong@seeed.cc](luweicong@seeed.cc "luweicong@seeed.cc")) for seeed studio,<br>
Updated by Dmitry ([https://github.com/autowp](https://github.com/autowp "https://github.com/autowp"))<br>
and is licensed under [The MIT License](http://opensource.org/licenses/mit-license.php). Check [LICENSE.md](LICENSE.md) for more information.<br>
Contributing to this software is warmly welcomed. You can do this basically by<br>
[forking](https://help.github.com/articles/fork-a-repo), committing modifications and then [pulling requests](https://help.github.com/articles/using-pull-requests) (follow the links above<br>
@@ -150,22 +212,3 @@ Seeed Studio is an open hardware facilitation company based in Shenzhen, China.
Benefiting from local manufacture power and convenient global logistic system, <br>
we integrate resources to serve new era of innovation. Seeed also works with <br>
global distributors and partners to push open hardware movement.<br>
[![Analytics](https://ga-beacon.appspot.com/UA-46589105-3/CAN_BUS_Shield)](https://github.com/igrigorik/ga-beacon)
<script>
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
})(window,document,'script','//www.google-analytics.com/analytics.js','ga');
ga('create', 'UA-65075738-1', 'auto');
ga('send', 'pageview');
</script>
can.h
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#ifndef CAN_H_
#define CAN_H_
#include <stdint.h>
typedef unsigned char __u8;
typedef unsigned short __u16;
typedef unsigned long __u32;
/* special address description flags for the CAN_ID */
#define CAN_EFF_FLAG 0x80000000UL /* EFF/SFF is set in the MSB */
#define CAN_RTR_FLAG 0x40000000UL /* remote transmission request */
#define CAN_ERR_FLAG 0x20000000UL /* error message frame */
/* valid bits in CAN ID for frame formats */
#define CAN_SFF_MASK 0x000007FFUL /* standard frame format (SFF) */
#define CAN_EFF_MASK 0x1FFFFFFFUL /* extended frame format (EFF) */
#define CAN_ERR_MASK 0x1FFFFFFFUL /* omit EFF, RTR, ERR flags */
/*
* Controller Area Network Identifier structure
*
* bit 0-28 : CAN identifier (11/29 bit)
* bit 29 : error message frame flag (0 = data frame, 1 = error message)
* bit 30 : remote transmission request flag (1 = rtr frame)
* bit 31 : frame format flag (0 = standard 11 bit, 1 = extended 29 bit)
*/
typedef __u32 canid_t;
#define CAN_SFF_ID_BITS 11
#define CAN_EFF_ID_BITS 29
/* CAN payload length and DLC definitions according to ISO 11898-1 */
#define CAN_MAX_DLC 8
#define CAN_MAX_DLEN 8
struct can_frame {
canid_t can_id; /* 32 bit CAN_ID + EFF/RTR/ERR flags */
__u8 can_dlc; /* frame payload length in byte (0 .. CAN_MAX_DLEN) */
__u8 data[CAN_MAX_DLEN] __attribute__((aligned(8)));
};
#endif /* CAN_H_ */
examples/CAN_read/CAN_read.ino
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@@ -0,0 +1,34 @@
#include <SPI.h>
#include <mcp_can.h>
struct can_frame canMsg;
MCP_CAN mcp2515(10, MCP_CAN::MODE_NORMAL);
void setup() {
Serial.begin(115200);
mcp2515.begin(CAN_125KBPS);
Serial.println("------- CAN Read ----------");
Serial.println("ID DLC DATA");
}
void loop() {
if (mcp2515.readMessage(&canMsg) == MCP_CAN::ERROR_OK) {
Serial.print(canMsg.can_id, HEX); // print ID
Serial.print(" ");
Serial.print(canMsg.can_dlc,HEX); // print DLC
Serial.print(" ");
for (int i = 0; i<canMsg.can_dlc; i++) { // print the data
Serial.print(canMsg.data[i],HEX);
Serial.print(" ");
}
Serial.println();
}
}
examples/receive_Blink/receive_Blink.ino
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@@ -1,78 +0,0 @@
// demo: CAN-BUS Shield, receive data with check mode
// send data coming to fast, such as less than 10ms, you can use this way
// loovee, 2014-6-13
#include <SPI.h>
#include "mcp_can.h"
// the cs pin of the version after v1.1 is default to D9
// v0.9b and v1.0 is default D10
const int SPI_CS_PIN = 9;
const int LED=8;
boolean ledON=1;
MCP_CAN CAN(SPI_CS_PIN); // Set CS pin
void setup()
{
Serial.begin(115200);
pinMode(LED,OUTPUT);
START_INIT:
if(CAN_OK == CAN.begin(CAN_500KBPS)) // init can bus : baudrate = 500k
{
Serial.println("CAN BUS Shield init ok!");
}
else
{
Serial.println("CAN BUS Shield init fail");
Serial.println("Init CAN BUS Shield again");
delay(100);
goto START_INIT;
}
}
void loop()
{
unsigned char len = 0;
unsigned char buf[8];
if(CAN_MSGAVAIL == CAN.checkReceive()) // check if data coming
{
CAN.readMsgBuf(&len, buf); // read data, len: data length, buf: data buf
unsigned char canId = CAN.getCanId();
Serial.println("-----------------------------");
Serial.println("get data from ID: ");
Serial.println(canId);
for(int i = 0; i<len; i++) // print the data
{
Serial.print(buf[i]);
Serial.print("\t");
if(ledON && i==0)
{
digitalWrite(LED,buf[i]);
ledON=0;
delay(500);
}
else if((!(ledON)) && i==4){
digitalWrite(LED,buf[i]);
ledON=1;
}
}
Serial.println();
}
}
/*********************************************************************************************************
END FILE
*********************************************************************************************************/
examples/receive_check/receive_check.ino
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@@ -1,62 +0,0 @@
// demo: CAN-BUS Shield, receive data with check mode
// send data coming to fast, such as less than 10ms, you can use this way
// loovee, 2014-6-13
#include <SPI.h>
#include "mcp_can.h"
// the cs pin of the version after v1.1 is default to D9
// v0.9b and v1.0 is default D10
const int SPI_CS_PIN = 9;
MCP_CAN CAN(SPI_CS_PIN); // Set CS pin
void setup()
{
Serial.begin(115200);
START_INIT:
if(CAN_OK == CAN.begin(CAN_500KBPS)) // init can bus : baudrate = 500k
{
Serial.println("CAN BUS Shield init ok!");
}
else
{
Serial.println("CAN BUS Shield init fail");
Serial.println("Init CAN BUS Shield again");
delay(100);
goto START_INIT;
}
}
void loop()
{
unsigned char len = 0;
unsigned char buf[8];
if(CAN_MSGAVAIL == CAN.checkReceive()) // check if data coming
{
CAN.readMsgBuf(&len, buf); // read data, len: data length, buf: data buf
unsigned long canId = CAN.getCanId();
Serial.println("-----------------------------");
Serial.print("get data from ID: ");
Serial.println(canId, HEX);
for(int i = 0; i<len; i++) // print the data
{
Serial.print(buf[i]);
Serial.print("\t");
}
Serial.println();
}
}
/*********************************************************************************************************
END FILE
*********************************************************************************************************/
examples/receive_interrupt/receive_interrupt.ino
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// demo: CAN-BUS Shield, receive data with interrupt mode
// when in interrupt mode, the data coming can't be too fast, must >20ms, or else you can use check mode
// loovee, 2014-6-13
#include <SPI.h>
#include "mcp_can.h"
// the cs pin of the version after v1.1 is default to D9
// v0.9b and v1.0 is default D10
const int SPI_CS_PIN = 9;
MCP_CAN CAN(SPI_CS_PIN); // Set CS pin
unsigned char flagRecv = 0;
unsigned char len = 0;
unsigned char buf[8];
char str[20];
void setup()
{
Serial.begin(115200);
START_INIT:
if(CAN_OK == CAN.begin(CAN_500KBPS)) // init can bus : baudrate = 500k
{
Serial.println("CAN BUS Shield init ok!");
}
else
{
Serial.println("CAN BUS Shield init fail");
Serial.println("Init CAN BUS Shield again");
delay(100);
goto START_INIT;
}
attachInterrupt(0, MCP2515_ISR, FALLING); // start interrupt
}
void MCP2515_ISR()
{
flagRecv = 1;
}
void loop()
{
if(flagRecv)
{ // check if get data
flagRecv = 0; // clear flag
// iterate over all pending messages
// If either the bus is saturated or the MCU is busy,
// both RX buffers may be in use and reading a single
// message does not clear the IRQ conditon.
while (CAN_MSGAVAIL == CAN.checkReceive())
{
// read data, len: data length, buf: data buf
CAN.readMsgBuf(&len, buf);
// print the data
for(int i = 0; i<len; i++)
{
Serial.print(buf[i]);Serial.print("\t");
}
Serial.println();
}
}
}
/*********************************************************************************************************
END FILE
*********************************************************************************************************/
examples/send/send.ino
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@@ -1,40 +0,0 @@
// demo: CAN-BUS Shield, send data
#include <mcp_can.h>
#include <SPI.h>
// the cs pin of the version after v1.1 is default to D9
// v0.9b and v1.0 is default D10
const int SPI_CS_PIN = 9;
MCP_CAN CAN(SPI_CS_PIN); // Set CS pin
void setup()
{
Serial.begin(115200);
START_INIT:
if(CAN_OK == CAN.begin(CAN_500KBPS)) // init can bus : baudrate = 500k
{
Serial.println("CAN BUS Shield init ok!");
}
else
{
Serial.println("CAN BUS Shield init fail");
Serial.println("Init CAN BUS Shield again");
delay(100);
goto START_INIT;
}
}
unsigned char stmp[8] = {0, 1, 2, 3, 4, 5, 6, 7};
void loop()
{
// send data: id = 0x00, standrad frame, data len = 8, stmp: data buf
CAN.sendMsgBuf(0x00, 0, 8, stmp);
delay(100); // send data per 100ms
}
/*********************************************************************************************************
END FILE
*********************************************************************************************************/
examples/send_Blink/send_Blink.ino
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@@ -1,43 +0,0 @@
// demo: CAN-BUS Shield, send data
#include <mcp_can.h>
#include <SPI.h>
// the cs pin of the version after v1.1 is default to D9
// v0.9b and v1.0 is default D10
const int SPI_CS_PIN = 9;
const int ledHIGH = 1;
const int ledLOW = 0;
MCP_CAN CAN(SPI_CS_PIN); // Set CS pin
void setup()
{
Serial.begin(115200);
START_INIT:
if(CAN_OK == CAN.begin(CAN_500KBPS)) // init can bus : baudrate = 500k
{
Serial.println("CAN BUS Shield init ok!");
}
else
{
Serial.println("CAN BUS Shield init fail");
Serial.println("Init CAN BUS Shield again");
delay(100);
goto START_INIT;
}
}
unsigned char stmp[8] = {ledHIGH, 1, 2, 3, ledLOW, 5, 6, 7};
void loop()
{ Serial.println("In loop");
// send data: id = 0x00, standrad frame, data len = 8, stmp: data buf
CAN.sendMsgBuf(0x70,0, 8, stmp);
delay(1000); // send data per 100ms
}
/*********************************************************************************************************
END FILE
*********************************************************************************************************/
examples/send_Blink_ROS/send_Blink_ROS.ino
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@@ -1,73 +0,0 @@
// demo: CAN-BUS Shield, send data
// Hardware: TWO ArduinoMega with CAN-SHIELDS
// Run this send_Blink_ROS.ino file on one of the Arduinos
// Run receive_Blink on the other
// ***ROS commands to be followe***//
// roscore
// rosrun roial_python serial_node.py /dev/ttyACM1 _baud:=57600
// rostopic pub toggle_led std_msgs/Empty -r 100
// Jaghvi: jaghvim@andrew.cmu.edu
#include <mcp_can.h>
#include <SPI.h>
//ROS
#include <ros.h>
#include <std_msgs/Empty.h>
ros::NodeHandle nh;
const int SPI_CS_PIN = 9;
const int ledHIGH=1;
const int ledLOW=0;
unsigned char stmp[8] = {ledHIGH, 1, 2, 3, ledLOW, 5, 6, 7};
MCP_CAN CAN(SPI_CS_PIN); // Set CS pin
void messageCb( const std_msgs::Empty& toggle_msg){
//digitalWrite(13, HIGH-digitalRead(13)); // blink the led
// send data: id = 0x00, standrad frame, data len = 8, stmp: data buf
CAN.sendMsgBuf(0x70,0, 8, stmp);
delay(1000); // send data per 100ms
}
ros::Subscriber<std_msgs::Empty> sub("toggle_led", &messageCb );
// the cs pin of the version after v1.1 is default to D9
// v0.9b and v1.0 is default D10
void setup()
{
Serial.begin(115200);
nh.initNode();
nh.subscribe(sub);
START_INIT:
if(CAN_OK == CAN.begin(CAN_500KBPS)) // init can bus : baudrate = 500k
{
Serial.println("CAN BUS Shield init ok!");
}
else
{
Serial.println("CAN BUS Shield init fail");
Serial.println("Init CAN BUS Shield again");
delay(100);
goto START_INIT;
}
}
void loop()
{
nh.spinOnce();
delay(1);
}
/*********************************************************************************************************
END FILE
*********************************************************************************************************/
examples/set_mask_filter_recv/set_mask_filter_recv.ino
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// demo: CAN-BUS Shield, receive data with interrupt mode, and set mask and filter
//
// when in interrupt mode, the data coming can't be too fast, must >20ms, or else you can use check mode
// loovee, 2014-7-8
#include <SPI.h>
#include "mcp_can.h"
// the cs pin of the version after v1.1 is default to D9
// v0.9b and v1.0 is default D10
const int SPI_CS_PIN = 9;
MCP_CAN CAN(SPI_CS_PIN); // Set CS pin
unsigned char flagRecv = 0;
unsigned char len = 0;
unsigned char buf[8];
char str[20];
void setup()
{
Serial.begin(115200);
START_INIT:
if(CAN_OK == CAN.begin(CAN_500KBPS)) // init can bus : baudrate = 500k
{
Serial.println("CAN BUS Shield init ok!");
}
else
{
Serial.println("CAN BUS Shield init fail");
Serial.println("Init CAN BUS Shield again");
delay(100);
goto START_INIT;
}
attachInterrupt(0, MCP2515_ISR, FALLING); // start interrupt
/*
* set mask, set both the mask to 0x3ff
*/
CAN.init_Mask(0, 0, 0x3ff); // there are 2 mask in mcp2515, you need to set both of them
CAN.init_Mask(1, 0, 0x3ff);
/*
* set filter, we can receive id from 0x04 ~ 0x09
*/
CAN.init_Filt(0, 0, 0x04); // there are 6 filter in mcp2515
CAN.init_Filt(1, 0, 0x05); // there are 6 filter in mcp2515
CAN.init_Filt(2, 0, 0x06); // there are 6 filter in mcp2515
CAN.init_Filt(3, 0, 0x07); // there are 6 filter in mcp2515
CAN.init_Filt(4, 0, 0x08); // there are 6 filter in mcp2515
CAN.init_Filt(5, 0, 0x09); // there are 6 filter in mcp2515
}
void MCP2515_ISR()
{
flagRecv = 1;
}
void loop()
{
if(flagRecv) // check if get data
{
flagRecv = 0; // clear flag
CAN.readMsgBuf(&len, buf); // read data, len: data length, buf: data buf
Serial.println("\r\n------------------------------------------------------------------");
Serial.print("Get Data From id: ");
Serial.println(CAN.getCanId());
for(int i = 0; i<len; i++) // print the data
{
Serial.print("0x");
Serial.print(buf[i], HEX);
Serial.print("\t");
}
Serial.println();
}
}
/*********************************************************************************************************
END FILE
*********************************************************************************************************/
examples/set_mask_filter_send/set_mask_filter_send.ino
-46
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@@ -1,46 +0,0 @@
// demo: set_mask_filter_send
// this demo will show you how to use mask and filter
#include <mcp_can.h>
#include <SPI.h>
// the cs pin of the version after v1.1 is default to D9
// v0.9b and v1.0 is default D10
const int SPI_CS_PIN = 9;
MCP_CAN CAN(SPI_CS_PIN); // Set CS pin
void setup()
{
Serial.begin(115200);
START_INIT:
if(CAN_OK == CAN.begin(CAN_500KBPS)) // init can bus : baudrate = 500k
{
Serial.println("CAN BUS Shield init ok!");
}
else
{
Serial.println("CAN BUS Shield init fail");
Serial.println("Init CAN BUS Shield again");
delay(100);
goto START_INIT;
}
}
unsigned char stmp[8] = {0, 1, 2, 3, 4, 5, 6, 7};
void loop()
{
for(int id=0; id<10; id++)
{
memset(stmp, id, sizeof(stmp)); // set id to send data buff
CAN.sendMsgBuf(id, 0, sizeof(stmp), stmp);
delay(100);
}
}
/*********************************************************************************************************
END FILE
*********************************************************************************************************/
mcp_can.cpp
+326 -692
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File diff suppressed because it is too large Load Diff
mcp_can.h
+349 -104
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@@ -1,117 +1,362 @@
/*
mcp_can.h
2012 Copyright (c) Seeed Technology Inc. All right reserved.
Author:Loovee
Contributor: Cory J. Fowler
2014-1-16
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-
1301 USA
*/
#ifndef _MCP2515_H_
#define _MCP2515_H_
#include "mcp_can_dfs.h"
#include <SPI.h>
#include "can.h"
#define MAX_CHAR_IN_MESSAGE 8
/*
* speed 16M
*/
#define MCP_16MHz_1000kBPS_CFG1 (0x00)
#define MCP_16MHz_1000kBPS_CFG2 (0xD0)
#define MCP_16MHz_1000kBPS_CFG3 (0x82)
#define MCP_16MHz_500kBPS_CFG1 (0x00)
#define MCP_16MHz_500kBPS_CFG2 (0xF0)
#define MCP_16MHz_500kBPS_CFG3 (0x86)
#define MCP_16MHz_250kBPS_CFG1 (0x41)
#define MCP_16MHz_250kBPS_CFG2 (0xF1)
#define MCP_16MHz_250kBPS_CFG3 (0x85)
#define MCP_16MHz_200kBPS_CFG1 (0x01)
#define MCP_16MHz_200kBPS_CFG2 (0xFA)
#define MCP_16MHz_200kBPS_CFG3 (0x87)
#define MCP_16MHz_125kBPS_CFG1 (0x03)
#define MCP_16MHz_125kBPS_CFG2 (0xF0)
#define MCP_16MHz_125kBPS_CFG3 (0x86)
#define MCP_16MHz_100kBPS_CFG1 (0x03)
#define MCP_16MHz_100kBPS_CFG2 (0xFA)
#define MCP_16MHz_100kBPS_CFG3 (0x87)
/*
#define MCP_16MHz_100kBPS_CFG1 (0x03)
#define MCP_16MHz_100kBPS_CFG2 (0xBA)
#define MCP_16MHz_100kBPS_CFG3 (0x07)
*/
#define MCP_16MHz_95kBPS_CFG1 (0x03)
#define MCP_16MHz_95kBPS_CFG2 (0xAD)
#define MCP_16MHz_95kBPS_CFG3 (0x07)
#define MCP_16MHz_83k3BPS_CFG1 (0x03)
#define MCP_16MHz_83k3BPS_CFG2 (0xBE)
#define MCP_16MHz_83k3BPS_CFG3 (0x07)
#define MCP_16MHz_80kBPS_CFG1 (0x03)
#define MCP_16MHz_80kBPS_CFG2 (0xFF)
#define MCP_16MHz_80kBPS_CFG3 (0x87)
#define MCP_16MHz_50kBPS_CFG1 (0x07)
#define MCP_16MHz_50kBPS_CFG2 (0xFA)
#define MCP_16MHz_50kBPS_CFG3 (0x87)
#define MCP_16MHz_40kBPS_CFG1 (0x07)
#define MCP_16MHz_40kBPS_CFG2 (0xFF)
#define MCP_16MHz_40kBPS_CFG3 (0x87)
#define MCP_16MHz_33kBPS_CFG1 (0x09)
#define MCP_16MHz_33kBPS_CFG2 (0xBE)
#define MCP_16MHz_33kBPS_CFG3 (0x07)
#define MCP_16MHz_31k25BPS_CFG1 (0x0F)
#define MCP_16MHz_31k25BPS_CFG2 (0xF1)
#define MCP_16MHz_31k25BPS_CFG3 (0x85)
#define MCP_16MHz_20kBPS_CFG1 (0x0F)
#define MCP_16MHz_20kBPS_CFG2 (0xFF)
#define MCP_16MHz_20kBPS_CFG3 (0x87)
#define MCP_16MHz_10kBPS_CFG1 (0x1F)
#define MCP_16MHz_10kBPS_CFG2 (0xFF)
#define MCP_16MHz_10kBPS_CFG3 (0x87)
#define MCP_16MHz_5kBPS_CFG1 (0x3F)
#define MCP_16MHz_5kBPS_CFG2 (0xFF)
#define MCP_16MHz_5kBPS_CFG3 (0x87)
enum CAN_SPEED {
CAN_5KBPS,
CAN_10KBPS,
CAN_20KBPS,
CAN_31K25BPS,
CAN_33KBPS,
CAN_40KBPS,
CAN_50KBPS,
CAN_80KBPS,
CAN_83K3BPS,
CAN_95KBPS,
CAN_100KBPS,
CAN_125KBPS,
CAN_200KBPS,
CAN_250KBPS,
CAN_500KBPS,
CAN_1000KBPS
};
class MCP_CAN
{
public:
enum ERROR {
ERROR_OK = 0,
ERROR_FAIL = 1,
ERROR_ALLTXBUSY = 2,
ERROR_FAILINIT = 3,
ERROR_FAILTX = 4,
ERROR_NOMSG = 5
};
enum RXBn {
RXB0 = 0,
RXB1 = 1
};
enum TXBn {
TXB0 = 0,
TXB1 = 1,
TXB2 = 2
};
enum /*class*/ MODE : uint8_t {
MODE_NORMAL = 0x00,
MODE_SLEEP = 0x20,
MODE_LOOPBACK = 0x40,
MODE_LISTENONLY = 0x60,
MODE_CONFIG = 0x80,
MODE_POWERUP = 0xE0
};
enum /*class*/ CANINTF : uint8_t {
CANINTF_RX0IF = 0x01,
CANINTF_RX1IF = 0x02,
CANINTF_TX0IF = 0x04,
CANINTF_TX1IF = 0x08,
CANINTF_TX2IF = 0x10,
CANINTF_ERRIF = 0x20,
CANINTF_WAKIF = 0x40,
CANINTF_MERRF = 0x80
};
private:
static const uint8_t MODE_MASK = 0xE0;
static const uint8_t TXB_EXIDE_MASK = 0x08;
static const uint8_t DLC_MASK = 0x0F;
static const uint8_t RTR_MASK = 0x40;
static const uint8_t RXBnCTRL_RXM_STD = 0x20;
static const uint8_t RXBnCTRL_RXM_EXT = 0x40;
static const uint8_t RXBnCTRL_RXM_STDEXT = 0x00;
static const uint8_t RXBnCTRL_RXM_MASK = 0x60;
static const uint8_t RXBnCTRL_RTR = 0x80;
static const uint8_t RXB0CTRL_BUKT = 0x40;
static const uint8_t MCP_SIDH = 0;
static const uint8_t MCP_SIDL = 1;
static const uint8_t MCP_EID8 = 2;
static const uint8_t MCP_EID0 = 3;
static const uint8_t MCP_DLC = 4;
static const uint8_t MCP_DATA = 5;
enum RXF {
RXF0 = 0,
RXF1 = 1,
RXF2 = 2,
RXF3 = 3,
RXF4 = 4,
RXF5 = 5
};
enum /*class*/ STAT : uint8_t {
STAT_RX0IF = (1<<0),
STAT_RX1IF = (1<<1)
};
static const uint8_t STAT_RXIF_MASK = STAT_RX0IF | STAT_RX1IF;
enum /*class*/ TXBnCTRL : uint8_t {
TXB_ABTF = 0x40,
TXB_MLOA = 0x20,
TXB_TXERR = 0x10,
TXB_TXREQ = 0x08,
TXB_TXIE = 0x04,
TXB_TXP = 0x03
};
enum /*class*/ EFLG : uint8_t {
EFLG_RX1OVR = (1<<7),
EFLG_RX0OVR = (1<<6),
EFLG_TXBO = (1<<5),
EFLG_TXEP = (1<<4),
EFLG_RXEP = (1<<3),
EFLG_TXWAR = (1<<2),
EFLG_RXWAR = (1<<1),
EFLG_EWARN = (1<<0)
};
static const uint8_t EFLG_ERRORMASK = EFLG_RX1OVR
| EFLG_RX0OVR
| EFLG_TXBO
| EFLG_TXEP
| EFLG_RXEP;
enum /*class*/ INSTRUCTION : uint8_t {
INSTRUCTION_WRITE = 0x02,
INSTRUCTION_READ = 0x03,
INSTRUCTION_BITMOD = 0x05,
INSTRUCTION_LOAD_TX0 = 0x40,
INSTRUCTION_LOAD_TX1 = 0x42,
INSTRUCTION_LOAD_TX2 = 0x44,
INSTRUCTION_RTS_TX0 = 0x81,
INSTRUCTION_RTS_TX1 = 0x82,
INSTRUCTION_RTS_TX2 = 0x84,
INSTRUCTION_RTS_ALL = 0x87,
INSTRUCTION_READ_RX0 = 0x90,
INSTRUCTION_READ_RX1 = 0x94,
INSTRUCTION_READ_STATUS = 0xA0,
INSTRUCTION_RX_STATUS = 0xB0,
INSTRUCTION_RESET = 0xC0
};
enum /*class*/ REGISTER : uint8_t {
MCP_RXF0SIDH = 0x00,
MCP_RXF0SIDL = 0x01,
MCP_RXF0EID8 = 0x02,
MCP_RXF0EID0 = 0x03,
MCP_RXF1SIDH = 0x04,
MCP_RXF1SIDL = 0x05,
MCP_RXF1EID8 = 0x06,
MCP_RXF1EID0 = 0x07,
MCP_RXF2SIDH = 0x08,
MCP_RXF2SIDL = 0x09,
MCP_RXF2EID8 = 0x0A,
MCP_RXF2EID0 = 0x0B,
MCP_CANSTAT = 0x0E,
MCP_CANCTRL = 0x0F,
MCP_RXF3SIDH = 0x10,
MCP_RXF3SIDL = 0x11,
MCP_RXF3EID8 = 0x12,
MCP_RXF3EID0 = 0x13,
MCP_RXF4SIDH = 0x14,
MCP_RXF4SIDL = 0x15,
MCP_RXF4EID8 = 0x16,
MCP_RXF4EID0 = 0x17,
MCP_RXF5SIDH = 0x18,
MCP_RXF5SIDL = 0x19,
MCP_RXF5EID8 = 0x1A,
MCP_RXF5EID0 = 0x1B,
MCP_TEC = 0x1C,
MCP_REC = 0x1D,
MCP_RXM0SIDH = 0x20,
MCP_RXM0SIDL = 0x21,
MCP_RXM0EID8 = 0x22,
MCP_RXM0EID0 = 0x23,
MCP_RXM1SIDH = 0x24,
MCP_RXM1SIDL = 0x25,
MCP_RXM1EID8 = 0x26,
MCP_RXM1EID0 = 0x27,
MCP_CNF3 = 0x28,
MCP_CNF2 = 0x29,
MCP_CNF1 = 0x2A,
MCP_CANINTE = 0x2B,
MCP_CANINTF = 0x2C,
MCP_EFLG = 0x2D,
MCP_TXB0CTRL = 0x30,
MCP_TXB0SIDH = 0x31,
MCP_TXB0SIDL = 0x32,
MCP_TXB0EID8 = 0x33,
MCP_TXB0EID0 = 0x34,
MCP_TXB0DLC = 0x35,
MCP_TXB0DATA = 0x36,
MCP_TXB1CTRL = 0x40,
MCP_TXB1SIDH = 0x41,
MCP_TXB1SIDL = 0x42,
MCP_TXB1EID8 = 0x43,
MCP_TXB1EID0 = 0x44,
MCP_TXB1DLC = 0x45,
MCP_TXB1DATA = 0x46,
MCP_TXB2CTRL = 0x50,
MCP_TXB2SIDH = 0x51,
MCP_TXB2SIDL = 0x52,
MCP_TXB2EID8 = 0x53,
MCP_TXB2EID0 = 0x54,
MCP_TXB2DLC = 0x55,
MCP_TXB2DATA = 0x56,
MCP_RXB0CTRL = 0x60,
MCP_RXB0SIDH = 0x61,
MCP_RXB0SIDL = 0x62,
MCP_RXB0EID8 = 0x63,
MCP_RXB0EID0 = 0x64,
MCP_RXB0DLC = 0x65,
MCP_RXB0DATA = 0x66,
MCP_RXB1CTRL = 0x70,
MCP_RXB1SIDH = 0x71,
MCP_RXB1SIDL = 0x72,
MCP_RXB1EID8 = 0x73,
MCP_RXB1EID0 = 0x74,
MCP_RXB1DLC = 0x75,
MCP_RXB1DATA = 0x76
};
static const uint32_t SPI_CLOCK = 10000000; // 10MHz
static const int N_TXBUFFERS = 3;
static const int N_RXBUFFERS = 2;
static const struct TXBn_REGS {
REGISTER CTRL;
REGISTER SIDH;
REGISTER DATA;
} TXB[N_TXBUFFERS];
static const struct RXBn_REGS {
REGISTER CTRL;
REGISTER SIDH;
REGISTER DATA;
CANINTF CANINTF_RXnIF;
} RXB[N_RXBUFFERS];
uint8_t SPICS;
MODE m_mode;
private:
void reset(void);
ERROR setCANCTRL_Mode(const MODE newmode);
ERROR configRate(const CAN_SPEED canSpeed);
ERROR init(const CAN_SPEED canSpeed);
void startSPI();
void endSPI();
uint8_t readRegister(const REGISTER reg);
void readRegisterS(const REGISTER reg, uint8_t values[], const uint8_t n);
void setRegister(const REGISTER reg, const uint8_t value);
void setRegisterS(const REGISTER reg, const uint8_t values[], const uint8_t n);
void modifyRegister(const REGISTER reg, const uint8_t mask, const uint8_t data);
void write_id(const REGISTER reg, const bool ext, const uint32_t id);
INT8U m_nExtFlg; /* identifier xxxID */
/* either extended (the 29 LSB) */
/* or standard (the 11 LSB) */
INT32U m_nID; /* can id */
INT8U m_nDlc; /* data length: */
INT8U m_nDta[MAX_CHAR_IN_MESSAGE]; /* data */
INT8U m_nRtr; /* rtr */
INT8U m_nfilhit;
INT8U SPICS;
/*
* mcp2515 driver function
*/
// private:
private:
void mcp2515_reset(void); /* reset mcp2515 */
INT8U mcp2515_readRegister(const INT8U address); /* read mcp2515's register */
void prepareId(uint8_t *buffer, const bool ext, const uint32_t id);
void mcp2515_readRegisterS(const INT8U address,
INT8U values[],
const INT8U n);
void mcp2515_setRegister(const INT8U address, /* set mcp2515's register */
const INT8U value);
void mcp2515_setRegisterS(const INT8U address, /* set mcp2515's registers */
const INT8U values[],
const INT8U n);
void mcp2515_initCANBuffers(void);
void mcp2515_modifyRegister(const INT8U address, /* set bit of one register */
const INT8U mask,
const INT8U data);
INT8U mcp2515_readStatus(void); /* read mcp2515's Status */
INT8U mcp2515_setCANCTRL_Mode(const INT8U newmode); /* set mode */
INT8U mcp2515_configRate(const INT8U canSpeed); /* set boadrate */
INT8U mcp2515_init(const INT8U canSpeed); /* mcp2515init */
void mcp2515_write_id( const INT8U mcp_addr, /* write can id */
const INT8U ext,
const INT32U id );
void mcp2515_read_id( const INT8U mcp_addr, /* read can id */
INT8U* ext,
INT32U* id );
void mcp2515_write_canMsg( const INT8U buffer_sidh_addr ); /* write can msg */
void mcp2515_read_canMsg( const INT8U buffer_sidh_addr); /* read can msg */
void mcp2515_start_transmit(const INT8U mcp_addr); /* start transmit */
INT8U mcp2515_getNextFreeTXBuf(INT8U *txbuf_n); /* get Next free txbuf */
/*
* can operator function
*/
INT8U setMsg(INT32U id, INT8U ext, INT8U len, INT8U rtr, INT8U *pData); /* set message */
INT8U setMsg(INT32U id, INT8U ext, INT8U len, INT8U *pData); /* set message */
INT8U clearMsg(); /* clear all message to zero */
INT8U readMsg(); /* read message */
INT8U sendMsg(); /* send message */
public:
MCP_CAN(INT8U _CS);
INT8U begin(INT8U speedset); /* init can */
INT8U init_Mask(INT8U num, INT8U ext, INT32U ulData); /* init Masks */
INT8U init_Filt(INT8U num, INT8U ext, INT32U ulData); /* init filters */
INT8U sendMsgBuf(INT32U id, INT8U ext, INT8U rtr, INT8U len, INT8U *buf); /* send buf */
INT8U sendMsgBuf(INT32U id, INT8U ext, INT8U len, INT8U *buf); /* send buf */
INT8U readMsgBuf(INT8U *len, INT8U *buf); /* read buf */
INT8U readMsgBufID(INT32U *ID, INT8U *len, INT8U *buf); /* read buf with object ID */
INT8U checkReceive(void); /* if something received */
INT8U checkError(void); /* if something error */
INT32U getCanId(void); /* get can id when receive */
INT8U isRemoteRequest(void); /* get RR flag when receive */
INT8U isExtendedFrame(void); /* did we recieve 29bit frame? */
public:
MCP_CAN(const uint8_t _CS, const MODE mode);
ERROR begin(const CAN_SPEED speedset);
ERROR initMask(const uint8_t num, const bool ext, const uint32_t ulData);
ERROR initFilt(const RXF num, const bool ext, const uint32_t ulData);
ERROR sendMessage(const TXBn txbn, const struct can_frame *frame);
ERROR sendMessage(const struct can_frame *frame);
ERROR readMessage(const RXBn rxbn, struct can_frame *frame);
ERROR readMessage(struct can_frame *frame);
bool checkReceive(void);
bool checkError(void);
uint8_t getInterrupts(void);
uint8_t getInterruptMask(void);
void clearInterrupts(void);
void clearTXInterrupts(void);
uint8_t getStatus(void);
};
#endif
/*********************************************************************************************************
END FILE
*********************************************************************************************************/
mcp_can_dfs.h
-388
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@@ -1,388 +0,0 @@
/*
mcp_can_dfs.h
2012 Copyright (c) Seeed Technology Inc. All right reserved.
Author:Loovee
Contributor: Cory J. Fowler
2014-1-16
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-
1301 USA
*/
#ifndef _MCP2515DFS_H_
#define _MCP2515DFS_H_
#include <Arduino.h>
#include <SPI.h>
#include <inttypes.h>
#ifndef INT32U
#define INT32U unsigned long
#endif
#ifndef INT8U
#define INT8U byte
#endif
// if print debug information
#define DEBUG_MODE 0
/*
* Begin mt
*/
#define TIMEOUTVALUE 50
#define MCP_SIDH 0
#define MCP_SIDL 1
#define MCP_EID8 2
#define MCP_EID0 3
#define MCP_TXB_EXIDE_M 0x08 /* In TXBnSIDL */
#define MCP_DLC_MASK 0x0F /* 4 LSBits */
#define MCP_RTR_MASK 0x40 /* (1<<6) Bit 6 */
#define MCP_RXB_RX_ANY 0x60
#define MCP_RXB_RX_EXT 0x40
#define MCP_RXB_RX_STD 0x20
#define MCP_RXB_RX_STDEXT 0x00
#define MCP_RXB_RX_MASK 0x60
#define MCP_RXB_BUKT_MASK (1<<2)
/*
** Bits in the TXBnCTRL registers.
*/
#define MCP_TXB_TXBUFE_M 0x80
#define MCP_TXB_ABTF_M 0x40
#define MCP_TXB_MLOA_M 0x20
#define MCP_TXB_TXERR_M 0x10
#define MCP_TXB_TXREQ_M 0x08
#define MCP_TXB_TXIE_M 0x04
#define MCP_TXB_TXP10_M 0x03
#define MCP_TXB_RTR_M 0x40 /* In TXBnDLC */
#define MCP_RXB_IDE_M 0x08 /* In RXBnSIDL */
#define MCP_RXB_RTR_M 0x40 /* In RXBnDLC */
#define MCP_STAT_RXIF_MASK (0x03)
#define MCP_STAT_RX0IF (1<<0)
#define MCP_STAT_RX1IF (1<<1)
#define MCP_EFLG_RX1OVR (1<<7)
#define MCP_EFLG_RX0OVR (1<<6)
#define MCP_EFLG_TXBO (1<<5)
#define MCP_EFLG_TXEP (1<<4)
#define MCP_EFLG_RXEP (1<<3)
#define MCP_EFLG_TXWAR (1<<2)
#define MCP_EFLG_RXWAR (1<<1)
#define MCP_EFLG_EWARN (1<<0)
#define MCP_EFLG_ERRORMASK (0xF8) /* 5 MS-Bits */
/*
* Define MCP2515 register addresses
*/
#define MCP_RXF0SIDH 0x00
#define MCP_RXF0SIDL 0x01
#define MCP_RXF0EID8 0x02
#define MCP_RXF0EID0 0x03
#define MCP_RXF1SIDH 0x04
#define MCP_RXF1SIDL 0x05
#define MCP_RXF1EID8 0x06
#define MCP_RXF1EID0 0x07
#define MCP_RXF2SIDH 0x08
#define MCP_RXF2SIDL 0x09
#define MCP_RXF2EID8 0x0A
#define MCP_RXF2EID0 0x0B
#define MCP_CANSTAT 0x0E
#define MCP_CANCTRL 0x0F
#define MCP_RXF3SIDH 0x10
#define MCP_RXF3SIDL 0x11
#define MCP_RXF3EID8 0x12
#define MCP_RXF3EID0 0x13
#define MCP_RXF4SIDH 0x14
#define MCP_RXF4SIDL 0x15
#define MCP_RXF4EID8 0x16
#define MCP_RXF4EID0 0x17
#define MCP_RXF5SIDH 0x18
#define MCP_RXF5SIDL 0x19
#define MCP_RXF5EID8 0x1A
#define MCP_RXF5EID0 0x1B
#define MCP_TEC 0x1C
#define MCP_REC 0x1D
#define MCP_RXM0SIDH 0x20
#define MCP_RXM0SIDL 0x21
#define MCP_RXM0EID8 0x22
#define MCP_RXM0EID0 0x23
#define MCP_RXM1SIDH 0x24
#define MCP_RXM1SIDL 0x25
#define MCP_RXM1EID8 0x26
#define MCP_RXM1EID0 0x27
#define MCP_CNF3 0x28
#define MCP_CNF2 0x29
#define MCP_CNF1 0x2A
#define MCP_CANINTE 0x2B
#define MCP_CANINTF 0x2C
#define MCP_EFLG 0x2D
#define MCP_TXB0CTRL 0x30
#define MCP_TXB1CTRL 0x40
#define MCP_TXB2CTRL 0x50
#define MCP_RXB0CTRL 0x60
#define MCP_RXB0SIDH 0x61
#define MCP_RXB1CTRL 0x70
#define MCP_RXB1SIDH 0x71
#define MCP_TX_INT 0x1C // Enable all transmit interrup ts
#define MCP_TX01_INT 0x0C // Enable TXB0 and TXB1 interru pts
#define MCP_RX_INT 0x03 // Enable receive interrupts
#define MCP_NO_INT 0x00 // Disable all interrupts
#define MCP_TX01_MASK 0x14
#define MCP_TX_MASK 0x54
/*
* Define SPI Instruction Set
*/
#define MCP_WRITE 0x02
#define MCP_READ 0x03
#define MCP_BITMOD 0x05
#define MCP_LOAD_TX0 0x40
#define MCP_LOAD_TX1 0x42
#define MCP_LOAD_TX2 0x44
#define MCP_RTS_TX0 0x81
#define MCP_RTS_TX1 0x82
#define MCP_RTS_TX2 0x84
#define MCP_RTS_ALL 0x87
#define MCP_READ_RX0 0x90
#define MCP_READ_RX1 0x94
#define MCP_READ_STATUS 0xA0
#define MCP_RX_STATUS 0xB0
#define MCP_RESET 0xC0
/*
* CANCTRL Register Values
*/
#define MODE_NORMAL 0x00
#define MODE_SLEEP 0x20
#define MODE_LOOPBACK 0x40
#define MODE_LISTENONLY 0x60
#define MODE_CONFIG 0x80
#define MODE_POWERUP 0xE0
#define MODE_MASK 0xE0
#define ABORT_TX 0x10
#define MODE_ONESHOT 0x08
#define CLKOUT_ENABLE 0x04
#define CLKOUT_DISABLE 0x00
#define CLKOUT_PS1 0x00
#define CLKOUT_PS2 0x01
#define CLKOUT_PS4 0x02
#define CLKOUT_PS8 0x03
/*
* CNF1 Register Values
*/
#define SJW1 0x00
#define SJW2 0x40
#define SJW3 0x80
#define SJW4 0xC0
/*
* CNF2 Register Values
*/
#define BTLMODE 0x80
#define SAMPLE_1X 0x00
#define SAMPLE_3X 0x40
/*
* CNF3 Register Values
*/
#define SOF_ENABLE 0x80
#define SOF_DISABLE 0x00
#define WAKFIL_ENABLE 0x40
#define WAKFIL_DISABLE 0x00
/*
* CANINTF Register Bits
*/
#define MCP_RX0IF 0x01
#define MCP_RX1IF 0x02
#define MCP_TX0IF 0x04
#define MCP_TX1IF 0x08
#define MCP_TX2IF 0x10
#define MCP_ERRIF 0x20
#define MCP_WAKIF 0x40
#define MCP_MERRF 0x80
/*
* speed 16M
*/
#define MCP_16MHz_1000kBPS_CFG1 (0x00)
#define MCP_16MHz_1000kBPS_CFG2 (0xD0)
#define MCP_16MHz_1000kBPS_CFG3 (0x82)
#define MCP_16MHz_500kBPS_CFG1 (0x00)
#define MCP_16MHz_500kBPS_CFG2 (0xF0)
#define MCP_16MHz_500kBPS_CFG3 (0x86)
#define MCP_16MHz_250kBPS_CFG1 (0x41)
#define MCP_16MHz_250kBPS_CFG2 (0xF1)
#define MCP_16MHz_250kBPS_CFG3 (0x85)
#define MCP_16MHz_200kBPS_CFG1 (0x01)
#define MCP_16MHz_200kBPS_CFG2 (0xFA)
#define MCP_16MHz_200kBPS_CFG3 (0x87)
#define MCP_16MHz_125kBPS_CFG1 (0x03)
#define MCP_16MHz_125kBPS_CFG2 (0xF0)
#define MCP_16MHz_125kBPS_CFG3 (0x86)
#define MCP_16MHz_100kBPS_CFG1 (0x03)
#define MCP_16MHz_100kBPS_CFG2 (0xFA)
#define MCP_16MHz_100kBPS_CFG3 (0x87)
/*
#define MCP_16MHz_100kBPS_CFG1 (0x03)
#define MCP_16MHz_100kBPS_CFG2 (0xBA)
#define MCP_16MHz_100kBPS_CFG3 (0x07)
*/
#define MCP_16MHz_95kBPS_CFG1 (0x03)
#define MCP_16MHz_95kBPS_CFG2 (0xAD)
#define MCP_16MHz_95kBPS_CFG3 (0x07)
#define MCP_16MHz_83k3BPS_CFG1 (0x03)
#define MCP_16MHz_83k3BPS_CFG2 (0xBE)
#define MCP_16MHz_83k3BPS_CFG3 (0x07)
#define MCP_16MHz_80kBPS_CFG1 (0x03)
#define MCP_16MHz_80kBPS_CFG2 (0xFF)
#define MCP_16MHz_80kBPS_CFG3 (0x87)
#define MCP_16MHz_50kBPS_CFG1 (0x07)
#define MCP_16MHz_50kBPS_CFG2 (0xFA)
#define MCP_16MHz_50kBPS_CFG3 (0x87)
#define MCP_16MHz_40kBPS_CFG1 (0x07)
#define MCP_16MHz_40kBPS_CFG2 (0xFF)
#define MCP_16MHz_40kBPS_CFG3 (0x87)
#define MCP_16MHz_33kBPS_CFG1 (0x09)
#define MCP_16MHz_33kBPS_CFG2 (0xBE)
#define MCP_16MHz_33kBPS_CFG3 (0x07)
#define MCP_16MHz_31k25BPS_CFG1 (0x0F)
#define MCP_16MHz_31k25BPS_CFG2 (0xF1)
#define MCP_16MHz_31k25BPS_CFG3 (0x85)
#define MCP_16MHz_20kBPS_CFG1 (0x0F)
#define MCP_16MHz_20kBPS_CFG2 (0xFF)
#define MCP_16MHz_20kBPS_CFG3 (0x87)
#define MCP_16MHz_10kBPS_CFG1 (0x1F)
#define MCP_16MHz_10kBPS_CFG2 (0xFF)
#define MCP_16MHz_10kBPS_CFG3 (0x87)
#define MCP_16MHz_5kBPS_CFG1 (0x3F)
#define MCP_16MHz_5kBPS_CFG2 (0xFF)
#define MCP_16MHz_5kBPS_CFG3 (0x87)
#define MCPDEBUG (0)
#define MCPDEBUG_TXBUF (0)
#define MCP_N_TXBUFFERS (3)
#define MCP_RXBUF_0 (MCP_RXB0SIDH)
#define MCP_RXBUF_1 (MCP_RXB1SIDH)
//#define SPICS 10
#define MCP2515_SELECT() digitalWrite(SPICS, LOW)
#define MCP2515_UNSELECT() digitalWrite(SPICS, HIGH)
#define MCP2515_OK (0)
#define MCP2515_FAIL (1)
#define MCP_ALLTXBUSY (2)
#define CANDEBUG 1
#define CANUSELOOP 0
#define CANSENDTIMEOUT (200) /* milliseconds */
/*
* initial value of gCANAutoProcess
*/
#define CANAUTOPROCESS (1)
#define CANAUTOON (1)
#define CANAUTOOFF (0)
#define CAN_STDID (0)
#define CAN_EXTID (1)
#define CANDEFAULTIDENT (0x55CC)
#define CANDEFAULTIDENTEXT (CAN_EXTID)
#define CAN_5KBPS 1
#define CAN_10KBPS 2
#define CAN_20KBPS 3
#define CAN_31K25BPS 4
#define CAN_33KBPS 5
#define CAN_40KBPS 6
#define CAN_50KBPS 7
#define CAN_80KBPS 8
#define CAN_83K3BPS 9
#define CAN_95KBPS 10
#define CAN_100KBPS 11
#define CAN_125KBPS 12
#define CAN_200KBPS 13
#define CAN_250KBPS 14
#define CAN_500KBPS 15
#define CAN_1000KBPS 16
#define CAN_OK (0)
#define CAN_FAILINIT (1)
#define CAN_FAILTX (2)
#define CAN_MSGAVAIL (3)
#define CAN_NOMSG (4)
#define CAN_CTRLERROR (5)
#define CAN_GETTXBFTIMEOUT (6)
#define CAN_SENDMSGTIMEOUT (7)
#define CAN_FAIL (0xff)
#define CAN_MAX_CHAR_IN_MESSAGE (8)
#endif
/*********************************************************************************************************
END FILE
*********************************************************************************************************/