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view src/cs/drivers/drv_app/pwr/pwr_messages_i.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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/*******************************************************************************
 *
 *  pwr_messages_i.c
 *
 * Purpose: Contains functions used by PWR SWE to send events to the SPI task.
 *
 *
 * Author   Candice Bazanegue (c-brille@ti.com)
 *
 * (C) Texas Instruments 2001
 *
 ******************************************************************************/

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

#ifdef RVM_PWR_SWE

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


/********************************************************************************/
/*                                                                              */
/*    Function Name: pwr_spi_battery_info                                       */
/*                                                                              */
/*    Purpose:    This function is used to send a PWR_SPI_INFO_BATTERY_EVT      */
/*                message to the SPI task.                                      */
/*                                                                              */
/********************************************************************************/
T_RV_RET pwr_spi_battery_info(CALLBACK_FUNC CallBack)
{
   T_RV_HDR *msgPtr;

   /* check if the driver has been started */
   if (pwr_env_ctrl_blk == NULL)
      return (RVM_NOT_READY);
   
   if(SPI_GBL_INFO_PTR->SpiTaskReady == FALSE)
      return(RVM_NOT_READY);

   if (rvf_get_buf (pwr_env_ctrl_blk->prim_id, sizeof (T_RV_HDR),(void **) &msgPtr) == RVF_RED)
   {
      rvf_send_trace ("PWR ERROR: Not enough memory",
                      28,
                      NULL_PARAM,
                      RV_TRACE_LEVEL_ERROR,
                      PWR_USE_ID);

      return (RV_MEMORY_ERR);
   }

   msgPtr->msg_id          = PWR_SPI_INFO_BATTERY_EVT;
   msgPtr->dest_addr_id    = pwr_env_ctrl_blk->addr_id;
   msgPtr->callback_func   = (CALLBACK_FUNC) CallBack;

   rvf_send_msg (pwr_env_ctrl_blk->addr_id, msgPtr);

   return (RV_OK);
}

#endif /* #ifdef RVM_PWR_SWE */