Hi,
I need to modify and Init_pll example, from 40mhz crystal to 20mhz.
see:
/* Set sysclk = 264MHz running from PLL with 40 MHz crystal reference. */
void InitSysclk (void) {
FMPLL.ESYNCR2.R = 0x00000002;
FMPLL.ESYNCR1.R = 0x70040032;
while (FMPLL.SYNSR.B.LOCK != 1) {}; /* Wait for FMPLL to LOCK */
FMPLL.ESYNCR2.R = 0x00000001; /* Fsys =264Mhz */
}
//-------
void initCAN_A (void) {
uint8_t i;
CAN_A.MCR.R = 0x5000003F; /* Put in Freeze Mode & enable all 64 message buffers */
CAN_A.CR.R = 0x04ED0002; /* Configure for 40MHz OSC, 500KHz bit time */
//-------------------
TO
my code with Xtal 20mhz, pins PLLCFG[2:0] = 001.
/* Set sysclk = 264/200/180/MHz running from PLL with 20 MHz crystal reference. */
void InitSysclk (void) {
FMPLL.ESYNCR2.R = 0x00000002;
FMPLL.ESYNCR1.R = 0x10040032; <----pll = 001
while (FMPLL.SYNSR.B.LOCK != 1) {}; /* Wait for FMPLL to LOCK */
FMPLL.ESYNCR2.R = 0x00000001; /* Fsys =264Mhz or 180/200 Mhz*/
}
//-------
void initCAN_A (void) {
CAN_A.MCR.R = 0x5000003F; /* Put in Freeze Mode & enable all 64 message buffers */
CAN_A.CR.R = 0x04ED0002; /* Configure for 20MHz OSC, 500KHz bit time */
-----brabra
thanks,
Carlos.
