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/****************************************************/ |
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/* Examples Program For "CP-JR ARM7 LPC2368" */ |
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/* Target MCU : Philips ARM7-LPC2368 */ |
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/* : X-TAL : 12.00 MHz */ |
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/* : PLL Setup = MSEL(12),NSEL(1) */ |
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/* Keil Editor : uVision3 V3.53a */ |
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/* Compiler : Keil Realview MDK V3.20 */ |
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/* Create By : Eakachai Makarn (WWW.ETT.CO.TH) */ |
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/* Last Update : 12/November/2007 */ |
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/* Function : Example Generate Beep on Speaker */ |
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/****************************************************/ |
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#include "LPC23xx.H" // LPC2368 MPU Register |
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// Pin I/O Speaker Control Maskbit |
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#define SPEAKER 0x00000100 // P2.8(0000 0000 0000 0000 0000 000x 0000 0000) |
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#define SPEAKER_ON() FIO2SET = SPEAKER // Speaker Pin = 1 (ON LED) |
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#define SPEAKER_OFF() FIO2CLR = SPEAKER // Speaker Pin = 0 (OFF LED) |
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/* pototype section */ |
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void delay(unsigned long int); // Delay Time Function |
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int main(void) |
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{ |
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unsigned int beep_time; |
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// Config Pin GPIO2[8] |
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PINSEL4 &= 0xFFFCFFFF; // P2[8] = GPIO Function(xxxx xxxx xxxx xx00 xxxx xxxx xxxx xxxx) |
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FIO2DIR |= SPEAKER; // Set GPIO-2[8] = Output(xxxx xxxx xxxx xxxx xxxx xxx1 xxxx xxxx) |
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SPEAKER_OFF(); // Default Speaker Status |
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// Loop Generate Beep on Speaker(P2.8) |
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while(1) // Loop Continue |
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{ |
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for (beep_time = 0; beep_time < 500; beep_time++) // Start Beep |
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{ |
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SPEAKER_ON(); // ON Speaker |
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delay(5000); |
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SPEAKER_OFF(); // OFF Speaker |
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delay(5000); |
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} |
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delay(10000000); // Stop Beep |
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} |
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} |
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/***********************/ |
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/* Delay Time Function */ |
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/* 1-4294967296 */ |
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/***********************/ |
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void delay(unsigned long int count1) |
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{ |
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while(count1 > 0) {count1--;} // Loop Decrease Counter |
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} |
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