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view src/cs/drivers/drv_app/pwr/pwr_process.c @ 629:3231dd9b38c1

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armio.c: make GPIOs 8 & 13 outputs driving 1 on all "classic" targets Calypso GPIOs 8 & 13 are pinmuxed with MCUEN1 & MCUEN2, respectively, and on powerup these pins are MCUEN, i.e., outputs driving 1. TI's code for C-Sample and earlier turns them into GPIOs configured as outputs also driving 1 - so far, so good - but TI's code for BOARD 41 (which covers D-Sample, Leonardo and all real world Calypso devices derived from the latter) switches them from MCUEN to GPIOs, but then leaves them as inputs. Given that the hardware powerup state of these two pins is outputs driving 1, every Calypso board design MUST be compatible with such driving; typically these GPIO signals will be either unused and unconnected or connected as outputs driving some peripheral. Turning these pins into GPIO inputs will result in floating inputs on every reasonably-wired board, thus I am convinced that this configuration is nothing but a bug on the part of whoever wrote this code at TI. This floating input bug had already been fixed earlier for GTA modem and FCDEV3B targets; the present change makes the fix unconditional for all "classic" targets. The newly affected targets are D-Sample, Leonardo, Tango and GTM900.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 02 Jan 2020 05:38:26 +0000
parents c93a236e0d50
children
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/*****************************************************************************/
/*                                                                           */
/*  Name       pwr_process.c                                                 */
/*                                                                           */
/*  Function   this file contains the pwr_process function, used to          */
/*			   handle messages received in the SPI task mailbox.             */
/*                                                                           */
/*  Version    0.1                                                           */
/*                                                                           */
/*  Date       Modification                                                  */
/*  ------------------------------------                                     */
/*                                                                           */
/* Author      Candice Bazanegue                                             */
/*                                                                           */
/* (C) Copyright 2000 by Texas Instruments Incorporated, All Rights Reserved */
/*****************************************************************************/

#include "rv/rv_defined_swe.h"	   // for RVM_PWR_SWE

#ifdef RVM_PWR_SWE

#include "abb/abb.h"
#include "rvm/rvm_use_id_list.h"
#include "rvf/rvf_api.h"
#include "pwr/pwr_messages_i.h"
#include "spi/spi_env.h"


/*******************************************************************************
** Function         pwr_process
**
** Description     It is called by the spi task core.                                        
**                 Messages can be related to ABB interrupt handling, or        
**                 battery charge management. 
**
*******************************************************************************/
void pwr_process(T_RV_HDR * msg_ptr)
{
   void *ptr = NULL;

   if (msg_ptr != NULL)
   {
      switch (msg_ptr->msg_id)
      {
         case PWR_SPI_INFO_BATTERY_EVT:
		 {
            /* Battery voltage and charger current */
            if (SPI_GBL_INFO_PTR->is_adc_on == FALSE)
            {
               /* start the channels conversion */
               ABB_Write_Register_on_page(PAGE0, VBATREG, 0x0000);
            }

            /* Callback function */
            if(((T_RV_HDR *)msg_ptr)->callback_func != NULL)
            {
               ((T_RV_HDR *)msg_ptr)->callback_func(ptr);
            }

            rvf_free_buf ((void *) msg_ptr);

            break;
		 }

         default:
	     {
            /* Unknow message has been received */
            rvf_send_trace("PWR_task : Received an unknown message",38, NULL_PARAM ,
                           RV_TRACE_LEVEL_DEBUG_HIGH, PWR_USE_ID);

            rvf_free_buf ((void *) msg_ptr);

            break;
         } 
      }   // end of switch
   }   // end of if
   return;
}

#endif /* #ifdef RVM_PWR_SWE */