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main.cpp@0:7ebf892f4561, 2009-11-29 (annotated)

User	Revision	Line number	New contents of line
simon	0:7ebf892f4561	1	#include "mbed.h"
simon	0:7ebf892f4561	2
simon	0:7ebf892f4561	3	int main() {
simon	0:7ebf892f4561	4	int Fin = 12000000; // 12MHz XTAL
simon	0:7ebf892f4561	5
simon	0:7ebf892f4561	6	printf("PLL Registers:\n");
simon	0:7ebf892f4561	7	printf(" - PLL0CFG = 0x%08X\n", LPC_SC->PLL0CFG);
simon	0:7ebf892f4561	8	printf(" - CLKCFG = 0x%08X\n", LPC_SC->CCLKCFG);
simon	0:7ebf892f4561	9
simon	0:7ebf892f4561	10	int M = (LPC_SC->PLL0CFG & 0xFFFF) + 1;
simon	0:7ebf892f4561	11	int N = (LPC_SC->PLL0CFG >> 16) + 1;
simon	0:7ebf892f4561	12	int CCLKDIV = LPC_SC->CCLKCFG + 1;
simon	0:7ebf892f4561	13
simon	0:7ebf892f4561	14	printf("Clock Variables:\n");
simon	0:7ebf892f4561	15	printf(" - Fin = %d\n", Fin);
simon	0:7ebf892f4561	16	printf(" - M = %d\n", M);
simon	0:7ebf892f4561	17	printf(" - N = %d\n", N);
simon	0:7ebf892f4561	18	printf(" - CCLKDIV = %d\n", CCLKDIV);
simon	0:7ebf892f4561	19
simon	0:7ebf892f4561	20	int Fcco = (2 * M * 12000000) / N;
simon	0:7ebf892f4561	21	int CCLK = Fcco / CCLKDIV;
simon	0:7ebf892f4561	22
simon	0:7ebf892f4561	23	printf("Clock Results:\n");
simon	0:7ebf892f4561	24	printf(" - Fcco = %d\n", Fcco);
simon	0:7ebf892f4561	25	printf(" - CCLK = %d\n", CCLK);
simon	0:7ebf892f4561	26	}