本帖最后由 jinglixixi 于 2023-10-26 22:42 编辑
CW32L031开发板内置了多个ADC模数转换通道,且内置了温度传感器，利用它与LCD5110显示屏相配合可完成片内温度的检测与显示功能，其效果如下图所示。
片内温度检测与显示
在ADC参考电压为1.5V时，其读取片内温度传感器的函数为： - void ADC_GetTsVref1V5(float *fAdcTsDegree)
- {
- uint16_t u16AdcResult;
- uint8_t temp1;
- uint16_t temp2;
- temp1 = *((uint8_t*) (ADDR_T0));
- temp2 = *((uint16_t*) (ADDR_TRIM_1P5));
- u16AdcResult = ADC_GetConversionValue();
- *fAdcTsDegree = temp1 * 0.5f + COEFF_TS * 1.5f * (u16AdcResult - temp2);
- }
在单次转换模式下，其采样与显示主程序为： - int main(void)
- {
- ADC_InitTypeDef ADC_InitStructure = {0};
- ADC_WdtTypeDef ADC_WdtStructure = {0};
- ADC_SingleChTypeDef ADC_SingleChStructure = {0};
- RCC_HSI_Enable(RCC_HSIOSC_DIV6);
- ADC_PortInit();
- GTIM_Init();
- ADC_StructInit(&ADC_InitStructure);
- ADC_InitStructure.ADC_VrefSel = ADC_Vref_BGR1p5;
- ADC_WdtInit(&ADC_WdtStructure);
- ADC_SingleChStructure.ADC_DiscardEn = ADC_DiscardNull;
- ADC_SingleChStructure.ADC_Chmux = ADC_TsInput;
- ADC_SingleChStructure.ADC_InitStruct = ADC_InitStructure;
- ADC_SingleChStructure.ADC_WdtStruct = ADC_WdtStructure;
- ADC_SingleChOneModeCfg(&ADC_SingleChStructure);
- ADC_ITConfig(ADC_IT_EOC, ENABLE);
- ADC_EnableIrq(ADC_INT_PRIORITY);
- ADC_ClearITPendingAll();
- ADC_Enable();
- ADC_ExtTrigCfg(ADC_TRIG_GTIM1, ENABLE);
- GTIM_Cmd(CW_GTIM1, ENABLE);
- LCD5510_CONFIG();
- LED_SetHigh();
- CS_SetLow();
- LCD5510_Init();
- LCD_prints(0,0,"CW32L031");
- LCD_printc(0,1,'T');
- LCD_printc(1,1,'=');
- LCD_printc(8,1,'C');
- while (1)
- {
- while (!(gFlagIrq & ADC_ISR_EOC_Msk));
- gFlagIrq = 0u;
- valueAdc = ADC_GetConversionValue();
- LCD_printc(2,1,valueAdc/1000+'0');
- LCD_printc(3,1,valueAdc%1000/100+'0');
- LCD_printc(4,1,'.');
- LCD_printc(5,1,valueAdc%100/10+'0');
- LCD_printc(6,1,valueAdc%10+'0');
- ADC_GetTsVref1V5(&fTsDegree);
- }
- }
经程序的编译与下载，则可得到上图所示的检测效果。
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