FRDM-KEAZ128 的MC33903 WatchDog設置

lamb8059

請問要如何開啟MC33903的WatchDog的功能呢，
我看了Datasheet、AN4770後配置的WatchDog沒有啟動
main內沒有feed dog，Reset pin都沒拉LOW過

uint8_t spi_SBC_INIT_SEQ_PART0[2]={0xDF, 0x80};            /* Read Vreg register H */
uint8_t spi_SBC_INIT_SEQ_PART1[2]={0x5A, 0x00};            /* Enter in Normal mode */
uint8_t spi_SBC_INIT_SEQ_PART2[2]={0x5E, 0x90};            /* Enable 5V-CAN and Vaux regulators */
uint8_t spi_SBC_INIT_SEQ_PART3[2]={0x60, 0xC0};            /* Set CAN in TxRx mode, fast slew rate */
uint8_t spi_SBC_INIT_SEQ_PART4[2]={0x66, 0xC4};            /* Set LIN1 in TxRx mode, slew rate 20kb/s, LIN term ON */
uint8_t spi_data_receive16bit[2]={0, 0};

uint8_t spi_SBC_INIT_SEQ_PART5[2]={0x52, 0x40}; //change mode init mode
uint8_t spi_SBC_INIT_SEQ_PART6[2]={0x4A, 0x80}; //init reg
uint8_t spi_SBC_INIT_SEQ_PART7[2]={0x50, 0x00}; //init misc
uint8_t spi_SBC_INIT_SEQ_PART8[2]={0x40, 0x40}; //init wdog
uint8_t spi_SBC_INIT_SEQ_PART9[2]={0x54, 0x1F}; //set TIM_A

void Enable_SBC()
{

int i = 0;
FGPIOA->PSOR  = GPIO_PTD3_MASK;
FGPIOA->PDDR |= GPIO_PTD3_MASK;

// Delay 500ms for waitting VBAT is stable
delay = 500;
while( delay > 0 ) ;

FGPIOA->PCOR = GPIO_PTD3_MASK;
SPI_TransferWait(SPI1,spi_data_receive16bit,spi_SBC_INIT_SEQ_PART0,2);
FGPIOA->PSOR = GPIO_PTD3_MASK;
for(i=0;i<100;i++);


FGPIOA->PCOR = GPIO_PTD3_MASK;
SPI_TransferWait(SPI1,spi_data_receive16bit,spi_SBC_INIT_SEQ_PART1,2);
FGPIOA->PSOR = GPIO_PTD3_MASK;
for(i=0;i<100;i++);

FGPIOA->PCOR = GPIO_PTD3_MASK;
SPI_TransferWait(SPI1,spi_data_receive16bit,spi_SBC_INIT_SEQ_PART2,2);
FGPIOA->PSOR = GPIO_PTD3_MASK;
for(i=0;i<100;i++);

FGPIOA->PCOR = GPIO_PTD3_MASK;
SPI_TransferWait(SPI1,spi_data_receive16bit,spi_SBC_INIT_SEQ_PART3,2);
FGPIOA->PSOR = GPIO_PTD3_MASK;
for(i=0;i<100;i++);

FGPIOA->PCOR = GPIO_PTD3_MASK;
SPI_TransferWait(SPI1,spi_data_receive16bit,spi_SBC_INIT_SEQ_PART4,2);
FGPIOA->PSOR = GPIO_PTD3_MASK;
for(i=0;i<100;i++);

FGPIOA->PCOR = GPIO_PTD3_MASK;
SPI_TransferWait(SPI1,spi_data_receive16bit,spi_SBC_INIT_SEQ_PART5,2);
FGPIOA->PSOR = GPIO_PTD3_MASK;
for(i=0;i<100;i++);  

FGPIOA->PCOR = GPIO_PTD3_MASK;
SPI_TransferWait(SPI1,spi_data_receive16bit,spi_SBC_INIT_SEQ_PART6,2);
FGPIOA->PSOR = GPIO_PTD3_MASK;
for(i=0;i<100;i++);

FGPIOA->PCOR = GPIO_PTD3_MASK;
SPI_TransferWait(SPI1,spi_data_receive16bit,spi_SBC_INIT_SEQ_PART7,2);
FGPIOA->PSOR = GPIO_PTD3_MASK;
for(i=0;i<100;i++);

FGPIOA->PCOR = GPIO_PTD3_MASK;
SPI_TransferWait(SPI1,spi_data_receive16bit,spi_SBC_INIT_SEQ_PART8,2);
FGPIOA->PSOR = GPIO_PTD3_MASK;
for(i=0;i<100;i++);

FGPIOA->PCOR = GPIO_PTD3_MASK;
SPI_TransferWait(SPI1,spi_data_receive16bit,spi_SBC_INIT_SEQ_PART9,2);
FGPIOA->PSOR = GPIO_PTD3_MASK;
for(i=0;i<100;i++);

FGPIOA->PCOR = GPIO_PTD3_MASK;
SPI_TransferWait(SPI1,spi_data_receive16bit,spi_SBC_INIT_SEQ_PART1,2); //fed wdog
FGPIOA->PSOR = GPIO_PTD3_MASK;
for(i=0;i<100;i++);

}

最佳答案

非常感谢你的技术问题。我们建议您将此技术问题提交到恩智浦的英文论坛。网址是http://community.nxp.com/welcome谢谢。

• 小恩GG
• 发表于2017-09-14
• 详细答案>>

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小恩GG

非常感谢你的技术问题。我们建议您将此技术问题提交到恩智浦的英文论坛。网址是http://community.nxp.com/welcome谢谢。