Opening serial.device unit 1 q 38400

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Fri, 2021-02-19 15:04
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Seventhwonder
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Opening serial.device unit 1 q 38400

Hi all

I am trying to serial.device unit 1 at 38400 baud and I am trying to send commands to it, but following code should shutdown A1222, but nothing happens. What am I doing wrong ?

(I used serial device example on AmigaOS4 Wiki)

  1. #include <exec/types.h>
  2. #include <exec/memory.h>
  3. #include <exec/io.h>
  4. #include <devices/serial.h>
  5.  
  6. #include <proto/exec.h>
  7. #include <proto/dos.h>
  8.  
  9. int main()
  10. {
  11. struct MsgPort *SerialMP = IExec->AllocSysObjectTags(ASOT_PORT, TAG_END);
  12.  
  13. /* Create the message port */
  14. if (SerialMP != NULL)
  15.     {
  16.     /* Create the IORequest */
  17.     struct IOExtSer *SerialIO = IExec->AllocSysObjectTags(ASOT_IOREQUEST,
  18.         ASOIOR_ReplyPort, SerialMP,
  19.         ASOIOR_Size, sizeof(struct IOExtSer),
  20.         TAG_END);
  21.  
  22.     if (SerialIO != NULL)
  23.         {
  24.         /* Open the serial device */
  25.         if (IExec->OpenDevice(SERIALNAME, 1, (struct IORequest *)SerialIO, 0))
  26.  
  27.             /* Inform user that it could not be opened */
  28.             IDOS->Printf("Error: %s did not open\n",SERIALNAME);
  29.         else
  30.             {
  31.  
  32.             SerialIO->io_Baud           = 38400;             /* set 38400 baud */
  33. 			SerialIO->IOSer.io_Length   = 512;
  34.             SerialIO->IOSer.io_Data     = "#s\n";
  35.             SerialIO->IOSer.io_Command  = CMD_WRITE;
  36.             if (IExec->DoIO((struct IORequest *)SerialIO))     /* execute write */
  37.                 IDOS->Printf("Write failed.  Error - %ld\n", SerialIO->IOSer.io_Error);
  38.  
  39.             /* Close the serial device */
  40. 			IDOS->Printf("Shutdown command given\n");
  41.             IExec->CloseDevice((struct IORequest *)SerialIO);
  42.             }
  43.         /* Delete the IORequest */
  44.         IExec->FreeSysObject(ASOT_IOREQUEST, SerialIO);
  45.         }
  46.     else
  47.         /* Inform user that the IORequest could be created */
  48.         IDOS->Printf("Error: Could create IORequest\n");
  49.  
  50.     /* Delete the message port */
  51.     IExec->FreeSysObject(ASOT_PORT, SerialMP);
  52.     }
  53. else
  54.     /* Inform user that the message port could not be created */
  55.     IDOS->Printf("Error: Could not create message port\n");
  56.  
  57.     return 0;
  58. }
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Fri, 2021-02-19 18:58
hypex
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Re: Opening serial.device unit 1 q 38400

It can be shut down that way? Well what a strange setup!

Maybe you gave it too many commands. You set the write length to 512, then send a string of 3 characters. You can set length to -1 for a arbitrary string.

You may need to use the SDCMD_SETPARAMS to set the baud rate.

https://wiki.amigaos.net/wiki/Serial_Device

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Sat, 2021-02-20 01:00
jabirulo
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Last seen: 2 weeks 6 days ago
Joined: 2013-05-30 00:53
Re: Opening serial.device unit 1 q 38400

On X5000 this sequence is used (for querying temp, "shutdown", if working, should be same but "#s\n"):

  1. ...
  2. 	port = IExec->AllocSysObject(ASOT_PORT, NULL);
  3. 	if(!port)
  4. 	{
  5. 		printf("No port\n");
  6. 		cleanup_stuff();
  7. 	}
  8. 	req = IExec->AllocSysObjectTags(ASOT_IOREQUEST, ASOIOR_Size, sizeof(struct IOExtSer),
  9. 									ASOIOR_ReplyPort, port,
  10. 								TAG_DONE);
  11. 	if(!req)
  12. 	{
  13. 		printf("No Request\n");
  14. 		cleanup_stuff();
  15. 	}
  16.  
  17. 	//serialOpenConfig();
  18. 	err = IExec->OpenDevice("serial.device", 1, (struct IORequest*)req, 0);
  19. 	if(err)
  20. 	{
  21. 		dev = 0;
  22. 		printf("OpenDevice failed: %d\n", err);
  23. 		cleanup_stuff();
  24. 	}
  25.  
  26. 	// Set parameters to address MCU 
  27. 	req->IOSer.io_Command = SDCMD_SETPARAMS;
  28. 	req->io_Baud = 38400; // 38400 Baud
  29. 	req->io_ReadLen = 8; // 8 bit data
  30. 	req->io_WriteLen = 8; // 8 bit data
  31. 	req->io_StopBits = 1; // 1 Stop bit
  32. 	req->io_SerFlags &= ~SERF_PARTY_ON; // No Parity
  33. 	req->io_SerFlags |= SERF_XDISABLED; // No Flow Control
  34. 	err = IExec->DoIO((struct IORequest*)req);
  35. 	if(err != IOERR_SUCCESS)
  36. 	{
  37. 		printf("Setting parameters to serial failed. Code: %d\n", err);
  38. 			cleanup_stuff();
  39. 	}
  40.  
  41. 	while(1)
  42. 	{
  43. 		// Temperatures
  44. 		req->IOSer.io_Length  = 3;
  45. 		req->IOSer.io_Data    = (APTR)"#t\n";//X5K_MCU_CMD_GET_TEMP;
  46. 		req->IOSer.io_Command = CMD_WRITE;
  47. 		IExec->DoIO((struct IORequest*)req);
  48. ...

BTW you can take a look at acpi.resource autodoc, maybe is valid for A1222 too.

AOS4.1/SAM460ex/PPC460EX-1155MHZ/2048MB/RadeonHD6570/SSD120GB/DVDRW :-P

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