FreeCalypso > hg > fc-tourmaline
view src/cs/drivers/drv_app/buzzer/buzzer.c @ 53:a8c8a5521073
uartfax.c: sync with Magnetite & Selenite (Tango RI output)
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 20 Oct 2020 02:16:15 +0000 |
parents | 4e78acac3d88 |
children | 4f839e1991e8 |
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/* * 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" /* * 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) { if (f > 255) { f = 255; } *((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_Enable (); BZ_Tone (50); 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_Enable (); BZ_Tone (100); 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 (level > 63) level=63; // the level range is 0 up to 63 *((volatile SYS_UWORD16 *) LT_LEVEL) = level; } /* * 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); #endif return(0); }