I am having trouble getting Teensy 3.2 to work with WIZ850io (W5500) Ethernet module.
I have run the attached sketch on a mega2560 with Ethernet shield attached and this works fine. ( printout attached. I have connected Teensy3.2 to WIZ850io as per attached note and run the same sketch with the target processor set to Teensy 3.2. The attached printout shows that the code gets past the initialization of the WIZ859io in the case where the ethernet connector is connected to a hub and if it is not connected to a hub the code times out without a connection. However when the Ethernet is connected after passing the initialization, the code hangs at the Udp.beginPacket(address, Port); function call. It does not get past this point and nothing is received on my Ethernet monitoring.
printout and connection information:
TeensyNoEthernetConnection after waiting some time:
we have serialstarting EtherrnetFailed to configure Ethernet using DHCP
TeensyEthernetConnection:
we have serialstarting Etherrnetstarting UDPwe have local port setuprunning tic
32770 5 6 23191
running same cosde on megga2560 with W5100 shield:
we have serial
starting Etherrnet
starting UDP
we have local port setup
running tic
-32766 5 6 7 8
-32766 10 12 14 16
-32766 15 18 21 24
-32766 20 24 28 32
-32766 25 30 35 40
-32766 30 36 42 48
-32766 35 42 49 56
-32766 40 48 56 64
-32766 45 54 63 72
-32766 50 60 70 80
-32766 55 66 77 88
-32766 60 72 84 96
-32766 65 78 91 104
-32766 70 84 98 112
-32766 75 90 105 120
’
’
’ etc…
Teensy3.2 - WIZ850io connections:
GND Gnd
Vin 3.3V
12 MISO
11 MOSI
10 SCNn
13 SCLK
Here is the sketch:
/* Test for setup and running ethernet W5500 from Teensy 3.2
*/
#define ledPin 13 // LED connected to digital pin 13
#include <Ethernet.h>
//#include <EthernetUdp.h>
/*
* globals
*/
const int PACKET_SIZE = 48; //
typedef struct SYS {
// Timer system variables
unsigned long tic_next;
unsigned long tic_period;
unsigned long tic_last;
unsigned long tic_dif;
// Communication System variables
unsigned int localPort = 4000; // local port to listen for UDP packets
};
SYS S;
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; // MAC address
char broadcastAddr[] = "255.255.255.255"; // broadcast address URL
byte packetBuffer[ PACKET_SIZE]; //buffer to hold incoming and outgoing packets
byte packetBuffer3[ 8]; //buffer to hold incoming and outgoing packets
const int PACKET_SIZE_AB = 12; // size of measurement data packet 6 ints
byte pktBufA[ PACKET_SIZE_AB]; // buffer to hold measurement data
int *PtrIA; // integer pointer to buffer A
int *PtrI;
char *PtrC;
int *PtrI3;
typedef struct UDPDatStruct {
unsigned short numblocks;
unsigned short numinblock;
unsigned short data[];
} UDPDatStruct;
EthernetUDP Udp; // A UDP instance to let us send and receive packets over UDP
/*
* function prototypes
*/
void systemTic( void);
void sampleQueue( void);
void sendUDP(char* address, unsigned int Port, void * Buf, int Size);
void sendSysParams( void);
void setup() {
pinMode(ledPin, OUTPUT); // initialize digital pin LED_BUILTIN as an output.
PtrC = (char *)&packetBuffer3[0];
PtrI3 = (int *)PtrC;
PtrC = (char *)&packetBuffer[0];
PtrI = (int *)PtrC;
PtrIA = (int *)pktBufA; // set integer pointer to buffer A
// Open serial communications and wait for port to open:
Serial.begin(115200);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
Serial.println("\nwe have serial");
Serial.println("starting Etherrnet");
// start Ethernet and UDP
if (Ethernet.begin(mac) == 0) {
Serial.println("Failed to configure Ethernet using DHCP");
// no point in carrying on, so do nothing forevermore:
for (;;) // will hang if no HUB connected to ethernet switch
;
}
Serial.println("starting UDP");
Udp.begin(S.localPort);
Serial.println("we have local port setup");
Serial.println("running tic");
systemTic();
}
void loop() {
//Serial.print("lockup system:\n");
delay(10000);
}
// systemTic
//
void systemTic( void) {
S.tic_period = 500000UL; // 02 Hz
S.tic_last = micros();
for(;;) {
S.tic_next = S.tic_last + S.tic_period; // set next tic
sampleQueue();
sendSysParams();
sendUDP( broadcastAddr, 4000, PtrIA, PACKET_SIZE_AB);
for(;;) { // wait for next tic epoc
S.tic_dif = S.tic_next - micros();
if ( S.tic_dif & 0x80000000 ) {
S.tic_last = S.tic_next;
S.tic_next = S.tic_last + S.tic_period;
break;
}
}
}
}
void sendSysParams( void) {
Serial.print("\n");
Serial.print(PtrIA[0]);
Serial.print("\t");
Serial.print(PtrIA[1]);
Serial.print("\t");
Serial.print(PtrIA[2]);
Serial.print("\t");
Serial.print(PtrIA[3]);
Serial.print("\t");
Serial.print(PtrIA[4]);
}
// sampleQueue
//
void sampleQueue( void) {
PtrIA[0] = 0x8002;
PtrIA[1] = PtrIA[1] + 5;
PtrIA[2] = PtrIA[2] + 6;
PtrIA[3] = PtrIA[3] + 7;
PtrIA[4] = PtrIA[4] + 8;
}
// send UDP data
//
void sendUDP(char* address, unsigned int Port, void * Buf, int Size) {
//Serial.println("\nset address, port");
Udp.beginPacket(address, Port);
//Serial.println("write Buf, size");
Udp.write((char *)Buf, Size);
//Serial.println("end packet");
Udp.endPacket();
}
I do not know what to do to get this working.
Please help
Regards
Clem.
