LPC 1837 & CAN - all messages

phateee — Sat, 15 Jul 2017 14:52:00 GMT

Hello,

can me somebody help?LPC has only 32 can messages, which make interrupt. It is posible to catch all messages on CAN?

I have:

Init function

Chip_SCU_PinMuxSet(3, 1,(SCU_MODE_INACT | SCU_MODE_INBUFF_EN | SCU_MODE_FUNC2));
Chip_SCU_PinMuxSet(3, 2,(SCU_MODE_INACT | SCU_MODE_FUNC2));

Chip_SCU_PinMuxSet(2, 13, (SCU_MODE_FUNC0 | SCU_PINIO_FAST));
Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT, 1, 13); /* GPIO5[6] = USB1_PWR_EN */
Chip_GPIO_SetPinState(LPC_GPIO_PORT, 1, 13, false); /* GPIO5[6] output high */

Chip_Clock_SetBaseClock(CLK_BASE_APB3, CLKIN_IDIVC, true, false);
Chip_CCAN_Init(LPC_C_CAN0);
Chip_CCAN_SetBitRate(LPC_C_CAN0, 500000);

Chip_CCAN_EnableTestMode(LPC_C_CAN0);
Chip_CCAN_ConfigTestMode(LPC_C_CAN0, (CCAN_TEST_BASIC_MODE | CCAN_TEST_BASIC_MODE));

Chip_CCAN_EnableInt(LPC_C_CAN0, (CCAN_CTRL_IE | CCAN_CTRL_SIE | CCAN_CTRL_EIE));

NVIC_EnableIRQ(C_CAN0_IRQn);

and interrupt function:

void CAN0_IRQHandler(void)
{
CCAN_MSG_OBJ_T msg_buf;
uint32_t can_interrupt;
uint32_t can_status;
uint16_t can_mini_id_0 = 0;
uint16_t can_mini_id_1 = 0;
uint16_t i_mod = 0;

while ( (can_interrupt = Chip_CCAN_GetIntID(LPC_C_CAN0)) != 0 )
{
if ((CCAN_INT_STATUS == can_interrupt) && (CCAN_STAT_RXOK & LPC_C_CAN0->STAT))
{

msg_buf.id = (LPC_C_CAN0->IF[CCAN_MSG_IF1].ARB1 | LPC_C_CAN0->IF[CCAN_MSG_IF1].ARB2 << 16);

.....

LPC_C_CAN0->STAT = LPC_C_CAN0->STAT & (~CCAN_STAT_RXOK);

}

but I can't to catch any messages....

Re: LPC 1837 & CAN - all messages

jeremyzhou — Tue, 18 Jul 2017 08:18:02 GMT

Hi Jan Mal&yacute

Thank you for your interest in NXP Semiconductor products and

for the opportunity to serve you.

I'd already replied and please check the Case: 00125004

Have a great day,

TIC

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topic LPC 1837 & CAN - all messages in LPC Microcontrollers

LPC 1837 & CAN - all messages

Re: LPC 1837 & CAN - all messages