keazn64 读写完EEPROM 串口发送数据进入 HardFault

功夫崽崽 · 发表于 2021-9-10 09:55:09

本帖最后由功夫崽崽于 2021-9-10 09:56 编辑

int main(void)
{
   uint8_t eBuf[EEPROM_SIZE];

   Bsp_Init();

   GetChipUniqueID();

   memset(eBuf,0x5A,sizeof(eBuf));
   mFLASH_Init(16000000);
   mEEPROM_EraseOneSector(EEPROM_SIZE);
   mEEPROM_Program(EEPROM_START_ADDRESS,&eBuf[0],EEPROM_SIZE);
   memset(eBuf,0x00,sizeof(eBuf));
   mEEPROM_Read(0,&eBuf[0],EEPROM_SIZE);

      printf("Usart0 Send Hello kea ! \r\n");             //程序执行到这里死机  putchar 如下

      /*
      PUTCHAR_PROTOTYPE
      {
         USART0_SendData((uint8_t) ch);          //串口发送函数如下
         /*
         void USART0_SendData(uint8_t dat)
         {
            while (!(UART0->S1 & 0x80));
            UART0->D = (uint8_t) dat;
         }

      */
         return ch;
      }

      */

      while(1)
      {
      ;
      }
}

观察串口调试助手  能接收到两个字节 “Us” 后程序就进入 “HardFault” 中断。
EEPROM  参照官方 demo  及“https://www.nxpic.org.cn/module/ ... xtra=page%3D&page=1” 此帖。

最佳答案

楼主你好请问如果不操作EEPROM，单独调用printf("Usart0 Send Hello kea ! \r\n"); 是否会触发HardFault？

小恩GG
发表于2021-09-14
详细答案>>

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功夫崽崽 · 发表于 2021-9-10 10:20:02

串口配置
void USART0_Init(void)
{
   uint32_t baudTemph,baudTempl;

SIM->SCGC |= 0x00100000; //Enable bus clock in UART0
SIM->PINSEL    |= 0x00000080;       //=1 UART0_RX and TX are mapped on PTA2 and PTA3.

UART0->BDH &= ~0x20;             //One stop
      //UART baud rate equals BUSCLK/(16×BR).
baudTemph = BUSCLOCK;
baudTemph >>= 4;
      baudTemph  /= 9600;
baudTempl = baudTemph;

      baudTemph  &= 0x1FFF;
baudTemph >>= 8;
UART0->BDH &= 0xE0;                      //clear baud_h
UART0->BDH |= (uint8_t)  baudTemph;
UART0->BDL  = (uint8_t) (baudTempl & 0x00FF);

UART0->C1 = 0;                               /* No parity enable,8 bit format*/
UART0->C2  |= 0x08;                            /* Enable Transmitter*/
UART0->C2  |= 0x04;                            /* Enable Receiver */
UART0->C2  |= 0x20;                            /* Enable Receiver interrupts*/

      NVIC_ClearPendingIRQ(UART0_IRQn);          /* Clear any Pending IRQ for all UART0_IRQn  (#23) */
NVIC_EnableIRQ(UART0_IRQn);               /* Set Enable IRQ for UART0 */
NVIC_SetPriority(UART0_IRQn,0);       /* Set Priority for UART0 */
}