beep_test.rar_beeptest

/* * beep.c - beep api & driver * * Board: akae2440 * environment: bootloader & ADS * Author: akaedu * Date: 2009-5-26 * web: www.akaedu.org * * * GPIO address_MAP * * CPLD_MAP_BASE physical address is 0x20800000 * CPLD_LED physical address is 0x20800000 * CPLD_SEG physical address is 0x20800080 * CPLD_DIP physical address is 0x208000a0 * * GPIO port_MAP * * GPA_PORT~GPB_PORT(130 multi-functional input port pins) * GPIO_BASE : GPACON : 0x56000000 * * NAME GPIO CPLD_IN CPLD_OUT GPIO_CON MODE_bit_CON GPIO_DAT MODE_bit_DAT * BEEP GPB0 TOUT0 BEEP 0x56000010 [1:0] 0x56000014 [0] * * GPIO key_scn_MAP * * NAME PORT_OUT PORT_IN * KEY(sw1) KBOUT1 : GPB8 KBIN1 : ENT0 : GPF0 * KEY(sw2) KBOUT0 : GPB9 KBIN1 : ENT0 : GPF0 * KEY(sw3) KBOUT1 : GPB8 KBIN0 : ENT2 : GPF2 * KEY(sw4) KBOUT1 : GPB8 KBIN1 : ENT2 : GPF2 * * GPIO_CON GPIO_DAT GPIO MODE_bit_CON MODE_bit_DAT * GPBCON : 0x56000010 GPBDAT : 0x56000014 GPB8 [17:16] [8] * GPBCON : 0x56000010 GPBDAT : 0x56000014 GPB9 [19:18] [9] * GPFCON : 0x56000050 GPBDAT : 0x56000054 GPF0 [1:0] [0] * GPFCON : 0x56000050 GPBDAT : 0x56000054 GPF2 [5:4] [2] * */ #include "beep.h" #define GPBCON *((volatile unsigned int *)0x56000010) #define GPBDAT *((volatile unsigned int *)0x56000014) int beep_init(void) { /* configure GPB0 : TOUT0 : BEEP output */ GPBCON &= ~(1<<1); GPBCON |= 1<<0; return 0; } int beep_on(void) { GPBDAT |= 1<<0; return 0; } int beep_off(void) { GPBDAT &= ~(1<<0); return 0; } static void delay(int time) { int i,j; for (i = 0; i < time; i++) for (j = 0; j < 60000000; j++) ; } int beep_test(void) { while(1) { beep_on(); delay(1); beep_off(); delay(1); } return 0; }