Content originally posted in LPCWare by erbal_gfx on Thu Jul 30 03:54:59 MST 2015
Hello Guys!
I have a custom board with an LPC1769 uC on it. I want to use CAN1, and send a message first of all to check it.
After CAN initialization function I want to send a test message, but it don't happen and my peripheral sets itself to reset. Before send the register values looks fine, I've checked it. I also tested it in self test mode, in that case the TX interrupt is called, everything looks fine. My controller works on 112Mhz.
My CAN init function is the following:
(Somehow the forum doesn't show a big part of my code)
<code>
static void CAN1init(void)
{
PINSEL_CFG_Type PinCfg ={
.Portnum = PINSEL_PORT_0,
.Pinnum = PINSEL_PIN_0,
.Funcnum = PINSEL_FUNC_1,
.OpenDrain = 0,
.Pinmode = PINSEL_PINMODE_NORMAL,
};
//CAN_RX
PINSEL_ConfigPin(&PinCfg);
//CAN TX
PinCfg.Pinnum = PINSEL_PIN_1;
PINSEL_ConfigPin(&PinCfg);
//CAN STB
PinCfg.Funcnum = PINSEL_FUNC_0;
PinCfg.Pinnum = PINSEL_PIN_3;
PinCfg.Portnum = PINSEL_PORT_2;
PinCfg.Pinmode = PINSEL_PINMODE_NORMAL;
PINSEL_ConfigPin(&PinCfg);
GPIO_SetDir(PINSEL_PORT_2, (1<<PINSEL_PIN_3), Output);
GPIO_ClearValue(PINSEL_PORT_2, (1<<PINSEL_PIN_3));
CAN_Init(LPC_CAN1, 500000);
CAN_ModeConfig(LPC_CAN1, CAN_TXPRIORITY_MODE, ENABLE);
CAN_IRQCmd(LPC_CAN1, CANINT_RIE, ENABLE);
CAN_IRQCmd(LPC_CAN1, CANINT_TIE1, ENABLE);
CAN_SetAFMode(LPC_CANAF,CAN_AccBP);
NVIC_EnableIRQ(CAN_IRQn);
}
</code>
