HC32F460的GPIO操作

只看该作者 · 2024-11-18 18:00

//时钟配置如下
void SYSClk_Config(void) {

CLK_HrcCmd(Disable);
uint32_t delay = 1000;
while(delay--) {};
CLK_XtalCmd(Enable);
CLK_HrcCmd(Enable);  //HRC默认16M
PWC_Fcg0PeriphClockCmd(PWC_FCG0_PERIPH_SRAMH, Enable);
PWC_Fcg0PeriphClockCmd(PWC_FCG0_PERIPH_SRAM12, Enable);
PWC_Fcg0PeriphClockCmd(PWC_FCG0_PERIPH_SRAM3, Enable);
PWC_Fcg0PeriphClockCmd(PWC_FCG0_PERIPH_SRAMRET, Enable);
stc_clk_output_cfg_t stcOutputClkCfg;
MEM_ZERO_STRUCT(stcOutputClkCfg);
{
      //主时钟和ram时钟配置
      stc_sram_config_t stcSramConfig;
      MEM_ZERO_STRUCT(stcSramConfig);
      /* sram init include read/write wait cycle setting */
      stcSramConfig.u8SramIdx    = Sram12Idx | Sram3Idx | SramRetIdx;
      stcSramConfig.enSramRC    = SramCycle2;
      stcSramConfig.enSramWC    = SramCycle2;
      stcSramConfig.enSramEccMode = EccMode3;
      stcSramConfig.enSramEccOp = SramNmi;
      stcSramConfig.enSramPyOp = SramNmi;
      SRAM_Init(&amp;stcSramConfig);
      stcSramConfig.u8SramIdx    = SramHsIdx;
      stcSramConfig.enSramRC    = SramCycle1;
      stcSramConfig.enSramWC    = SramCycle1;
      stcSramConfig.enSramEccMode = EccMode3;
      stcSramConfig.enSramEccOp = SramNmi;
      stcSramConfig.enSramPyOp = SramNmi;
      SRAM_Init(&amp;stcSramConfig);
      /* flash 读等待周期*/
      EFM_Unlock();
      EFM_SetLatency(EFM_LATENCY_5);
      EFM_InstructionCacheCmd(Enable);
      EFM_Lock();
      stc_clk_mpll_cfg_t stcMpllCfg;
      MEM_ZERO_STRUCT(stcMpllCfg);
      /* MPLL config (XTAL / pllmDiv * plln / PllpDiv = 200M). */
      stcMpllCfg.pllmDiv = 2ul;  // 16/2 = 8M MPLL的VCO输入频率介于1MHz到12MHz之间。
      stcMpllCfg.plln = 24ul;  // 8x42 = 192M 确保MPLL的VCO频率介于240MHz到480MHz之间
      stcMpllCfg.PllpDiv = 1ul;  // 192M
      stcMpllCfg.PllqDiv = 1ul;  // 192M
      stcMpllCfg.PllrDiv = 1ul;  // 192M
      CLK_SetPllSource(ClkPllSrcXTAL);
      CLK_MpllConfig(&amp;stcMpllCfg);
      /* Enable MPLL. */
      CLK_MpllCmd(Enable);
}
{
      //外设时钟分频
      stc_clk_sysclk_cfg_t stcSysClkCfg;
      MEM_ZERO_STRUCT(stcSysClkCfg);
      /* Set bus clk div. */
      stcSysClkCfg.enHclkDiv  = ClkSysclkDiv1;  //  CPU
      stcSysClkCfg.enExclkDiv = ClkSysclkDiv2;  //  SDIO CAN
      stcSysClkCfg.enPclk0Div = ClkSysclkDiv1;  //  TIM6计数
      stcSysClkCfg.enPclk1Div = ClkSysclkDiv2;  //  UART SPI USB逻辑 TIM0 TIMA TIM4 TIM6逻辑
      stcSysClkCfg.enPclk2Div = ClkSysclkDiv4;  //  ADC变换
      stcSysClkCfg.enPclk3Div = ClkSysclkDiv4;  //  RTC I2C CMP WDT SWDT
      stcSysClkCfg.enPclk4Div = ClkSysclkDiv2;  //  ADC逻辑控制，TRNG
      CLK_SysClkConfig(&amp;stcSysClkCfg);
}
PWC_HS2HP();  // high speed -&gt; high performance
CLK_SetSysClkSource(CLKSysSrcMPLL);
}
int main() {
PORT_Unlock();
M4_PORT-&gt;PSPCR    = 3;
M4_PORT-&gt;PCCR_f.RDWT = 3;
SYSClk_Config();
stc_port_init_t stcPortInit = {0};
stcPortInit.enPinMode = Pin_Mode_Out;
stcPortInit.enPinDrv = Pin_Drv_H;
PORT_Init(PortB, Pin03, &amp;stcPortInit);
  //使用bit-band映射翻转位,暂时不清楚使用bit-band之后keil调试容易崩溃,但是执行无问题
uint32_t* pb3T_bitBand = (unsigned int*)(0x42A7038CUL);
while(1) {
      *pb3T_bitBand = 1;
}
}

反汇编如下

<span]以上代码执行后示波器抓取IO波形,频率为32MHZ:

<span]看看IO口波形: