Revision 9:a35b78afe3e3, committed 2022-01-11

Comitter:

yezhong

Date:

Tue Jan 11 02:18:01 2022 +0000

Parent:

8:872137b3a8a8

Commit message:

1

Changed in this revision

diff -r 872137b3a8a8 -r a35b78afe3e3 CAN3.cpp
--- a/CAN3.cpp	Mon Oct 18 13:40:02 2010 +0000
+++ b/CAN3.cpp	Tue Jan 11 02:18:01 2022 +0000
@@ -6,8 +6,8 @@
 #include "mcp2515_defs.h"
 
 
-CAN3::CAN3(SPI& _spi, PinName ncs, PinName itr)
-        : spi(_spi), _mcp(spi, ncs), _itr(itr) {
+CAN3::CAN3(SPI& _spi, PinName ncs)//, PinName itr)
+        : spi(_spi), _mcp(spi, ncs) {//, _itr(itr) {
     printf("\n\rcan = %d",this);
 
 }
@@ -53,11 +53,11 @@
 }
 
 void CAN3::rise(void (*fptr)(void)) {
-    _itr.rise(fptr);
+//    _itr.rise(fptr);
 }
 
 void CAN3::fall(void (*fptr2)(void)) {
-    _itr.fall(fptr2);
+//    _itr.fall(fptr2);
 }
 
 int CAN3::frequency(int canSpeed) {
@@ -81,7 +81,8 @@
     if ( _mcp.setCANCTRL_Mode(MODE_NORMAL) == MCP2515_OK) { //MODE_NORMAL MODE_LOOPBACK
         //     printf("OK\n\r");
     } else {
-        error("failed\n\r");
+        printf("failed\n\r");
+        return -1;
     }
 
     _mcp.dumpExtendedStatus();

diff -r 872137b3a8a8 -r a35b78afe3e3 CAN3.h
--- a/CAN3.h	Mon Oct 18 13:40:02 2010 +0000
+++ b/CAN3.h	Tue Jan 11 02:18:01 2022 +0000
@@ -14,10 +14,10 @@
 
 class CAN3  {
     SPI& spi;
-    InterruptIn _itr;
+    //InterruptIn _itr;
     mcp2515 _mcp;
 public:
-    CAN3(SPI& _spi, PinName ncs, PinName itr);
+    CAN3(SPI& _spi, PinName ncs);//, PinName itr);
     
     uint8_t read(CANMessage *msg); //    int read(CANMessage&    msg);
     void write(CANMessage* test);   //int write(CANMessage     msg);
@@ -31,9 +31,6 @@
     void rise(void (*fptr)(void));
     void fall(void (*fptr2)(void));
 
-
-
-
     // Private functions
 private :
     uint8_t checkReceive(void);
@@ -41,4 +38,4 @@
 
 };
 
-#endif // _MCP2515_H_
+#endif // _CAN3_H_

diff -r 872137b3a8a8 -r a35b78afe3e3 mcp2515.cpp
--- a/mcp2515.cpp	Mon Oct 18 13:40:02 2010 +0000
+++ b/mcp2515.cpp	Tue Jan 11 02:18:01 2022 +0000
@@ -27,7 +27,7 @@
  * Version : 0.1
  *
  * All credits to the nerds above, this source has been adapted for the
- * LPC1768 platform by J.Engelman. And does'nt require and of the copyrighted
+ * LPC1768 platform by J.Engelman. And doesn't require and of the copyrighted
  * SPI or AVR controller code that Martin or co have excluded copyright.
  * This module remains free.
  *
@@ -89,25 +89,31 @@
 
     switch (canSpeed) {
         case (CAN_500KBPS_8MHZ) :
-                        cfg1 = 0x04;
+            cfg1 = 0x04;
             cfg2 = 0xA0;
             cfg3 = 0x02;
         case (CAN_50KBPS_8MHZ) :
-                        cfg1 = 0x04; //0x09;
+            cfg1 = 0x04; //0x09;
             cfg2 = 0xB8; //0x90;
             cfg3 = 0x05; //0x02;
         case (CAN_125KBPS) :
-                        cfg1 = MCP_4MHz_125kBPS_CFG1 ;
+            cfg1 = MCP_4MHz_125kBPS_CFG1 ;
             cfg2 = MCP_4MHz_125kBPS_CFG2 ;
             cfg3 = MCP_4MHz_125kBPS_CFG3 ;
             set = 1;
             break;
         case (CAN_20KBPS) :
-                        cfg1 = MCP_4MHz_20kBPS_CFG1 ;
+            cfg1 = MCP_4MHz_20kBPS_CFG1 ;
             cfg2 = MCP_4MHz_20kBPS_CFG2 ;
             cfg3 = MCP_4MHz_20kBPS_CFG3 ;
             set = 1;
             break;
+        case (CAN_500KBPS_10MHz) :
+            cfg1 = 0x00;
+            cfg2 = 0x92;
+            cfg3 = 0x02;
+            set = 1;
+            break;            
         default:
             set = 0;
             break;
@@ -128,9 +134,8 @@
     //struct spi_device *spi = to_spi_device(can->cdev.dev);
     //struct mcp251x *chip = dev_get_drvdata(&spi->dev);
     //struct mcp251x_platform_data *pdata = spi->dev.platform_data;
-    
         printf("\n\rcanspeed=%d",bit_rate);
-    int f_osc = 16000000; //4000000; //4Mhz
+    int f_osc = 8000000;
     int tqs; /* tbit/TQ */
     int brp;
     int ps1, ps2, propseg, sjw;
@@ -455,7 +460,7 @@
     //setRegister(MCP_RXB1CTRL, 0);
 }
 
-uint8_t mcp2515::init(  int canSpeed) {
+uint8_t mcp2515::init(int canSpeed) {
     uint8_t res;
 
     _deselect();
@@ -471,11 +476,11 @@
         return res;  /* function exit on error */
     }
     res = configRate2(canSpeed);
+    //res = configRate(CAN_500KBPS_10MHz);
 
     if ( res == MCP2515_OK ) {
         initCANBuffers();
 
-
         // enable both receive-buffers to receive messages
         // with std. and ext. identifiers
         // and enable rollover

diff -r 872137b3a8a8 -r a35b78afe3e3 mcp2515_can.h
--- a/mcp2515_can.h	Mon Oct 18 13:40:02 2010 +0000
+++ b/mcp2515_can.h	Tue Jan 11 02:18:01 2022 +0000
@@ -21,6 +21,7 @@
 #define CAN_20KBPS   (1)
 #define CAN_125KBPS  (CAN_20KBPS+1)
 
+#define CAN_500KBPS_10MHz (59)
 #define CAN_1MBPS_8MHZ (58)
 #define CAN_500KBPS_8MHZ (57)
 #define CAN_250KBPS_8MHZ (56)