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vishalkashbar
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vishalkashbar
Asked: August 24, 20222022-08-24T09:49:08+05:30 2022-08-24T09:49:08+05:30In: Microcontroller

RA2A1- CAN Machine between 2 RA2A1 MCUs

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Hi

I am veritably new to CAN communication now I am working on transmitting and entering data between 2 RA2A1 MCUs but I do not know how to configure the CAN configuration on the alternate board. I have previously tested the circle- reverse mode on the first board, it’s working OK , but when I connect tx and rx of the first board to the alternate board, it wasn’t working. Here is my configuration.

and then are the lines that I used to flash into the first board and alternate board, thank you in advance.

boardcirclemachinemcusra2a1Renesas Microcontroller
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    1. Alex thomas
      2022-08-25T10:25:49+05:30Added an answer on August 25, 2022 at 10:25 am

      To receive messages you have to set up the acceptance filters, so that it knows which communication figures to receive, and where to put the received messages.

      To receive messages you have to set up the acceptance filters, so that it knows which communication figures to receive, and where to put the received messages.

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    2. Sandeep kumar
      2022-08-26T21:46:58+05:30Added an answer on August 26, 2022 at 9:46 pm

      Have you added the CGC driver, and started the Main Oscillator before calling R_CAN_Open()? err = R_CGC_Open (&g_cgc0_ctrl, &g_cgc0_cfg); if (FSP_SUCCESS != err) { __BKPT(0); //TODO better error handling } err = R_CGC_ClockStart (&g_cgc0_ctrl, CGC_CLOCK_MAIN_OSC, NULL); if (FSP_SUCCESS !Read more

      Have you added the CGC driver, and started the Main Oscillator before calling R_CAN_Open()?

      err = R_CGC_Open (&g_cgc0_ctrl, &g_cgc0_cfg);
      if (FSP_SUCCESS != err)
      {
      __BKPT(0); //TODO better error handling
      }
      err = R_CGC_ClockStart (&g_cgc0_ctrl, CGC_CLOCK_MAIN_OSC, NULL);
      if (FSP_SUCCESS != err)
      {
      __BKPT(0); //TODO better error handling
      }

      do
      {
      err = R_CGC_ClockCheck(&g_cgc0_ctrl, CGC_CLOCK_MAIN_OSC);
      }while(FSP_ERR_NOT_STABILIZED == err);
      if (FSP_SUCCESS != err)
      {
      __BKPT(0); //TODO better error handling
      }

      /* Initialize CAN module */
      err = R_CAN_Open(&g_can0_ctrl, &g_can0_cfg);
      /* Error trap */
      if(FSP_SUCCESS != err)
      {
      __BKPT(0); //TODO better error handling
      }

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