FreeCalypso > hg > fc-magnetite
view src/cs/drivers/drv_app/pwr/pwr_liion_cha.h @ 629:3231dd9b38c1
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 | fb95e3f83dc5 |
| children |
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/******************************************************************************* * * pwr_liion_cha.h * * Purpose: This file contains definitions for managing the Li-ion batteries * charging process. * * Author Candice Bazanegue (c-brille@ti.com) * * (C) Texas Instruments 2001 * ******************************************************************************/ #ifndef __PWR_LIION_CHA_H__ #define __PWR_LIION_CHA_H__ /* Define for battery qualification */ #define BATTERY_OK (0) #define OPEN_BATTERY (1) #define SHORT_BATTERY (2) /* Prototypes */ void pwr_start_CI_charging(unsigned short DAC_current); void pwr_start_CV_charging(unsigned short charging_voltage); void pwr_stop_charging(void); void pwr_current_loop_cal(void); void pwr_calibration_process(void); void pwr_battery_qualification(void); void pwr_start_fast_charge(void); void pwr_CI_charge_process(void); void pwr_CV_charge_process(void); void pwr_bat_test_timer_process(void); void pwr_short_test_timer_process(void); void pwr_open_test_timer_process(void); void pwr_cal_timer_process(void); void pwr_CI_charge_timer_process(void); void pwr_CV_charge_timer_process(void); #endif /* __PWR_LIION_CHA_H__ */