FreeCalypso > hg > fc-magnetite
view src/cs/drivers/drv_app/spi/spi_task.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 | 945cf7f506b2 |
| children |
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/*****************************************************************************/ /* */ /* Name spi_task.h */ /* */ /* Function this file contains timers definitions used by spi_core, */ /* in case the PWR SWE is defined. */ /* */ /* Version 0.1 */ /* Author Candice Bazanegue */ /* */ /* Date Modification */ /* ------------------------------------ */ /* 20/08/2000 Create */ /* 01/09/2003 Modfication */ /* Author Pascal Puel */ /* */ /* (C) Copyright 2000 by Texas Instruments Incorporated, All Rights Reserved */ /*****************************************************************************/ #ifndef _SPI_TASK_H_ #define _SPI_TASK_H_ #include "rv/rv_defined_swe.h" // for RVM_PWR_SWE #ifdef RVM_PWR_SWE #include "pwr/pwr_cust.h" #define SPI_TIMER0 (RVF_TIMER_0) #define SPI_TIMER0_INTERVAL_1 (PWR_BAT_TEST_TIME_1) #define SPI_TIMER0_INTERVAL_2 (PWR_BAT_TEST_TIME_2) #define SPI_TIMER0_INTERVAL_3 (PWR_CALIBRATION_TIME_1) #define SPI_TIMER0_INTERVAL_4 (PWR_CALIBRATION_TIME_2) #define SPI_TIMER0_WAIT_EVENT (RVF_TIMER_0_EVT_MASK) #define SPI_TIMER1 (RVF_TIMER_1) #define SPI_TIMER1_INTERVAL (PWR_CI_CHECKING_TIME) #define SPI_TIMER1_WAIT_EVENT (RVF_TIMER_1_EVT_MASK) #define SPI_TIMER2 (RVF_TIMER_2) #define SPI_TIMER2_INTERVAL (PWR_CV_CHECKING_TIME) #define SPI_TIMER2_WAIT_EVENT (RVF_TIMER_2_EVT_MASK) #define SPI_TIMER3 (RVF_TIMER_3) #define SPI_TIMER3_INTERVAL (PWR_DISCHARGE_CHECKING_TIME_1) #define SPI_TIMER3_INTERVAL_BIS (PWR_DISCHARGE_CHECKING_TIME_2) #define SPI_TIMER3_WAIT_EVENT (RVF_TIMER_3_EVT_MASK) #endif // RVM_PWR_SWE // Prototypes void spi_adc_on (void); T_RV_RET spi_core(void); #endif // _SPI_TASK_H_