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view src/cs/drivers/drv_app/lcc/lcc_modulate.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 945cf7f506b2
children
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/******************************************************************************
 * Power Task (pwr)
 * Design and coding by Svend Kristian Lindholm, skl@ti.com
 *
 * PWR SW Modulation
 *
 * $Id: pwr_modulate.c 1.1 Wed, 20 Aug 2003 10:22:37 +0200 skl $
 *
 ******************************************************************************/
#include <string.h>
#include "lcc/lcc.h"
#include "lcc/lcc_trace.h"
#include "lcc/lcc_modulate.h"
#include "lcc/lcc_cfg_i.h"
#include "lcc/lcc_cfg.h"
#include "rv/rv_defined_swe.h"
#include "abb/abb.h"

/******************************************************************************
 * Function prototypes
 ******************************************************************************/

void pwr_modulate_init(void);
void pwr_modulate_on(void);
void pwr_modulate_off(void);


#if (USE_Q401_CHG_CIRCUIT == 1)
extern T_PWR_CFG_BLOCK  *pwr_cfg;
#endif

void pwr_modulate_init(void) {
    ttw(ttr(TTrEventLow,"pwr_modulate_init(%d)" NL, 0));
    #if (USE_PWL_AS_MODULATOR == 1)
    BUZZ_LIGHT_REG |= 0x02;
    PWL_LEVEL_REG = 0xFF; // Full envelope function
    PWL_CTRL_REG  = 0x00; // No 32KHz clock
    #else
    // Set GPIO 6 HIGH
    *((volatile uint16 *) 0xfffe4806) |= 0x0020; // Enable GPIO module
    *((volatile uint16 *) 0xfffe4804) &= 0xffbf; // Set GPIO-6 = output
    *((volatile uint16 *) 0xfffe4802) |= 0x0080; // Set GPIO-6 = HIGH
    #endif
    ttw(ttr(TTrEventLow,"pwr_modulate_init(%d)" NL, 0xff));
}

void pwr_modulate_on(void) {
    ttw(ttr(TTrEventLow,"pwr_modulate_on(%d)" NL, 0));
#if (USE_Q401_CHG_CIRCUIT== 1)
    /* Program the DAC with the constant current value taken from /pwr/chg/chg<N>.cfg multiplied by k/255, where current k is in [1..255] */
    ABB_Write_Register_on_page(PAGE0, CHGREG, (pwr_cfg->data.k * pwr_cfg->chg.ichg_max) / 255);
#endif
#if (USE_Q402_CHG_CIRCUIT == 1)
    #if (USE_PWL_AS_MODULATOR == 1)
    BUZZ_LIGHT_REG |= 0x02;
    PWL_LEVEL_REG = 0xFF; // Full envelope function
    PWL_CTRL_REG  = 0x00; // No 32KHz clock
    #else
    // Use GPIO 6
    *((volatile uint16 *) 0xfffe4806) |= 0x0020; // Enable GPIO module
    *((volatile uint16 *) 0xfffe4804) &= 0xffbf; // Set GPIO-6 = output
    *((volatile uint16 *) 0xfffe4802) |= 0x0080; // Set GPIO-6 = HIGH
    #endif
#endif
    ttw(ttr(TTrEventLow,"pwr_modulate_on(%d)" NL, 0xFF));

}

void pwr_modulate_off(void) {
    ttw(ttr(TTrEventLow,"pwr_modulate_off(%d)" NL, 0));
#if (USE_Q401_CHG_CIRCUIT == 1)
    // Don't do anything - FET is fully controlled in pwr_modulate_on()
#endif
#if (USE_Q402_CHG_CIRCUIT == 1)
    #ifdef USE_PWL_AS_MODULATOR
    BUZZ_LIGHT_REG &= 0xfd;
    PWL_LEVEL_REG = 0x00; // No envelope function
    PWL_CTRL_REG  = 0x00; // No 32KHz clock
    #else
    // Use GPIO 6
    *((volatile uint16 *) 0xfffe4806) |= 0x0020; // Enable GPIO module
    *((volatile uint16 *) 0xfffe4804) &= 0xffbf; // Set GPIO-6 = output
    *((volatile uint16 *) 0xfffe4802) &= 0x007f; // Set GPIO-6 = LOW
    #endif
#endif
    ttw(ttr(TTrEventLow,"pwr_modulate_off(%d)" NL, 0xFF));
}