PSoC™ 5, 3 & 1 Forum Discussions

It is very easy, using the API to write a data in EEPROM.

but, i want to know write a data in EEPROM just once when i write new firmware.

maybe, it is possible write a data through miniprog3.

is it possible?

Please reply a solution.

Hello

I have CY8CKIT-030 board kit and CY8CKIT-017 CAN board, I try to listen CAN communication and for this reason, I installed on my board the CAN example.

But CAN protocol is extended (29 bits), and Bitrate=50kbit, and I don't know where I must change CAN parameter to listen correctly.

In my example, the application return me Rx errors and I think that the problem is CAN configuration.

I changed differents parameter in CAN setup, but it doesn't work ok

Thank you in advanced

Hi,

I have a design with a unprogrammed PSOC3 CY8C3444AXI-116.  I'm trying to develop a BSCAN test so I can test the device.  We have the device in a JTAG chain all by itself.  The infrastructure test works fine.  Once I try to run the interconnect test (or any other tests), all the nets fail.  the detailed JTAG diagnostics information shows that all the nets are stuck at zero.

I couldn't find any info in the data sheet.  but the BSDL file for this devcie contains this note at the end of the sheet:

"This CY8C3XXXX_XXX TQFP100 BSDL file supports 1149.1 testing only after "&
  "two of the following conditions are satisfied: "&
  "1. The JTAG port is enabled. "&
  "2. All IOs are pre-configured to drive out fast strong high/low. "&
  "JTAG access can be enabled either through programming NV-Latch "&
  "bits appropriately or through using test-port acquisition protocol. "&
  "The IOs may be pre-configuration either by writing port "&
  "configuration registers directly through a test port, or relying "&
  "on a programmed boot sequence which does that to complete automatically. "&
  "Testing other IO configurations requires changes to this file and "&
  "the pre-configured IO configuration.";

See it makes sense that this would be my problem.  I believe condition #1 is satisfied since I am using a Corelis controller which would use the TMS signal for enabling the JTAG port (since the infrastructure test passes, it would be safe to assume JTAG is enabled).  But condition #2 requires a pre-configuration...this obviously hasn't been done.  We didn't want to spend a lot of resource time creating a program so we can JTAG BSCAN test the device.  Would any one be able to lend some info on how to satisfy this conditions quickly?  Would there be a program available already?

greatly appreciate any help you can offer.

Jeff W

Hi,

I want to use CAN Controller on PSOC3 (CY8C3866AXI-040ES2). For that I have congured the CAN BUS to operate at 500Kbps, with system clcok is 24MHz and Baud Rate Prescalar set to 5 i.e. (8TQ = 5TQ (for TSEG1) + 2 TQ (TSEG2) + 1TQ(For SYN), SJW is set to 1. I have configured CAN interface for BASIC CAN ID, with all TX Mail Box configured for Basic Can IDs. CAN TX Line is mapped to P3[4], RX Line mapped to P3[5] and CAN_TX_EN mapped to P3[2].

Using the http://www.cypress.com/?docID=29942 as reference.

The code main loop is

================================================================================
    LCD_Start();
   
    can_set_acr_amr();
    CAN_GlobalIntEnable();
   
    CAN_Init ();
    CAN_Start ();
   
    CYGlobalIntEnable;  /* Uncomment this line to enable global interrupts. */
   
    LCD_Position(0,0);
    LCD_PrintString("CAN:INIT");

==================================================================================

And, the transmitting the Message using

===================================================================================

uint32 bmc_tx_handler (uint8 cmd)
{
    CAN_TX_MSG can_tx_msg;
    CAN_DATA_BYTES_MSG txmsg;
    int i;  int bcmid = cmd - 1;
   
    can_tx_msg.rtr = EMC_BCM_DISABLE_RTR;
    can_tx_msg.ide = EMC_BCM_STD_CAN_ID;
    can_tx_msg.irq = EMC_BCM_IRQ_ENABLE;
   
    /* initialize CAN MSG packet */
    for (i = 0; i < 8; i++)
            txmsg.byte = 0x00;
    can_tx_msg.id = EMC_BCM_REQUEST_ID | (bcmid & EMC_BCM_ID_MASK) ;
    can_tx_msg.dlc = EMC_BCM_REQUEST_LEN;
       
    txmsg.byte[0] = emc_bcm_request[cmd].bcm_req;  /* Data to Send */
   
       
    can_tx_msg.msg = &txmsg;
       
    if (CYRET_SUCCESS != CAN_SendMsg (&can_tx_msg))
        return CAN_FAIL;
   
    LCD_WriteControl(LCD_CLEAR_DISPLAY);
    LCD_Position(0,0);
    LCD_PrintString("CAN:TX");
    return CYRET_SUCCESS;

}

=========================================================================

I do not see any error message from SendMsg () after transmition is done. But, I do not see any data on TX line (on probing, it is pulled high level).

Please, let me know if any setting I am missing for CAN.

Thanks

Jitendra

Hi All,

im really struggeling clearing interrupt which is driven by PWM output (pwm).

once the interrupt is driven, i cant clear it and it stays on (Clear Pending isnt working).

Please help me..

Thank you 🙂

 http://www.cypress.com/?rID=2671