FreeCalypso > hg > fc-tourmaline
view src/cs/drivers/drv_app/buzzer/buzzer.c @ 281:a75eefbf8be4
Phone boot with PWON: weed out short button presses
Every standard end user phone has a design provision, most naturally
implemented in firmware, whereby the PWON button effects a boot only
if it is held down long enough - short presses of this PWON button
are detected, assumed to be spurious and cause the fw to power back off
instead of proceeding with boot. The present change introduces this
standard function in FreeCalypso.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Fri, 24 Sep 2021 02:03:08 +0000 |
parents | edd8482a6576 |
children |
line wrap: on
line source
/* * BUZZER.C * * Buzzer driver * * Target : ARM * * Copyright (c) Texas Instruments 2000 * */ #include "main/sys_types.h" #include "memif/mem.h" #include "armio/armio.h" #include "buzzer.h" #include "timer/timer.h" #include "board.cfg" #include "fc-target.h" /* * Initialize buzzer * */ void BZ_Init(void) { } /* * BZ_Enable / BZ_Disable * * Enable / disable buzzer * * The buzzer uses timer 1 */ void BZ_Enable(void) { *((volatile SYS_UWORD16 *) ARMIO_PWM_CNTL) |= BZ_ON; } void BZ_Disable(void) { *((volatile SYS_UWORD16 *) ARMIO_PWM_CNTL) &= ~BZ_ON; } /* * BZ_Tone * * Changes the timer count to set the tone frequency in Hz * * 58 ticks= 1 ms, which give a frequency of 500 Hz * * */ void BZ_Tone(int f) { #ifdef CONFIG_TARGET_PIRELLI f = 0; /* vibrator instead of buzzer */ #else if (f > 255) { f = 255; } #endif *((volatile SYS_UWORD16 *) ARMIO_LOAD_TIM) = f; } /* * BZ_Volume * * Changes the buzzer volume * */ void BZ_Volume(int v) { // the level range is 0 up to 63 if (v > 63) { v = 63; } *((volatile SYS_UWORD16 *) BZ_LEVEL) = v; } /* * BZ_KeyBeep_ON * * Audio feedback to user after keybeep * */ void BZ_KeyBeep_ON(void) { volatile int i; BZ_Init (); BZ_Volume (255); BZ_Tone (50); BZ_Enable (); for (i = 0; i < 17000; i++) ; BZ_Disable (); } /* * BZ_KeyBeep_OFF * * Audio feedback to user after keybeep * */ void BZ_KeyBeep_OFF(void) { volatile int i; BZ_Init (); BZ_Volume (255); BZ_Tone (100); BZ_Enable (); for (i = 0; i < 17000; i++) ; BZ_Disable (); } /* * LT_Enable / LT_Disable * * Enable / disable LCD lighting * */ void LT_Enable(void) { #if (BOARD == 7 || BOARD == 8 || BOARD == 9) *((volatile SYS_UWORD16 *) ARMIO_PWM_CNTL) |= LT_ON; #endif } void LT_Disable(void) { #if (BOARD == 7 || BOARD == 8 || BOARD == 9) *((volatile SYS_UWORD16 *) ARMIO_PWM_CNTL) &= ~LT_ON; #endif } /* * LT_Level * * Set LCD display level */ void LT_Level(SYS_WORD8 level) { #if (BOARD == 7 || BOARD == 8 || BOARD == 9) if (level > 63) level=63; // the level range is 0 up to 63 *((volatile SYS_UWORD16 *) LT_LEVEL) = level; #endif } /* * LT_Status * * Return lighting status for sleep manager * */ SYS_BOOL LT_Status(void) { #if (BOARD == 7 || BOARD == 8 || BOARD == 9) if (*((volatile SYS_UWORD16 *) ARMIO_PWM_CNTL) & LT_ON) return(1); // the light is on else return(0); #else return(0); #endif }