[参考译文] LP-MSPM0L1306：GPIO

Luke LedBetter、

           我使用 PA3引脚来切换 LED、但我没有获得输出。因此、请告知我们应该如何解决此问题。

大家好、Mohankumar、

我导入并使用了 GPIO_TOGGLE_OUTPUT 示例代码、在 SysConfig 中、我刚刚添加了另一个 GPIO 和 PA3上的引脚。 对于该代码、我刚刚将 GPIO_GRP_0_PIN_0_PIN 添加到第43行的 SET 引脚功能中。 PA3未连接到 LED、因此除非您连接示波器或使用万用表查看它、否则您无法直观地看到它发生变化。

如果您想改用 PA0、因为它是一个开漏 IO、我们在电路板上确实有上拉电阻器。 如果您已组装 J10、则会将其路由至上拉 PA0引脚。 这将允许您切换/设置 PA0并查看 LED D2上的输出。

如果您遇到进一步的问题、可以发送代码片段以及 GPIO 和所选 PinMux 的 SysConfig 部分的屏幕截图。

此致、

Luke

您好！

如果您使用了示例代码、则需要取消选中"重复模式"。 取消选中此选项后、程序按预期工作。  

或

将您的代码调整到下面。 在我添加的 ISR 中、 DL_ADC12_disableConversions (ADC12_0_INST)；这允许 CPU 执行其余代码、否则它会不断被 ADC 中断。

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#include "ti_msp_dl_config.h"

volatile bool gCheckADC;
volatile uint16_t gAdcResult;

int main(void)
{
    SYSCFG_DL_init();

    NVIC_EnableIRQ(ADC12_0_INST_INT_IRQN);
    gCheckADC = false;

    while (1) {
       DL_ADC12_startConversion(ADC12_0_INST);

        while (false == gCheckADC) {
            __WFE();
        }

        gCheckADC = false;
        gAdcResult = DL_ADC12_getMemResult(ADC12_0_INST, DL_ADC12_MEM_IDX_0);

        if (gAdcResult > 0x200) {
            DL_GPIO_setPins(GPIO_LEDS_PORT, GPIO_LEDS_USER_LED_1_PIN);
        } else {
            DL_GPIO_clearPins(GPIO_LEDS_PORT, GPIO_LEDS_USER_LED_1_PIN);
        }
        DL_ADC12_enableConversions(ADC12_0_INST);
    }
}

void ADC12_0_INST_IRQHandler(void)
{
    switch (DL_ADC12_getPendingInterrupt(ADC12_0_INST)) {
        case DL_ADC12_IIDX_MEM0_RESULT_LOADED:
            gCheckADC = true;
            DL_ADC12_disableConversions(ADC12_0_INST);
            break;
        default:
            break;
    }
}

此致、

Luke

大家好、Mohankumar、

您能否验证您没有使用低功耗模式、并且您只擦除主存储器。

低功耗模式应处于睡眠0

右键点击"Project"、转到"Project Properties"->"Debug"->"MSPM0 Flash Settings"。

要恢复器件、您需要调用 BSL。

按住 NRST 和 S1 (PA18)、然后按下 CCS 上的调试按钮。 CCS 将编译工程、一旦出现第一个弹出窗口、先释放 NRST、然后释放 S1。 MSPM0_known_issues_faq 中提供了更多恢复选项  

此致、

Luke

大家好、Mohankumar、

我将在我之前创建 的单独主题中向您回复 https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1196893/lp-mspm0l1306-changing-duty-cycle 

此致、

Luke