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100 lines
3.1 KiB
100 lines
3.1 KiB
#include "adc.h"
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static adc_t s_adc[] = {0};
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/***********************************************************************************************************************
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* =====================================================adc======================================================
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**
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***********************************************************************************************************************/
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// uint16_t meanvalue;
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adc_t adc = {0};
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void ADCInit(uint8_t *port, uint8_t pin) {
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// GPIO_PIN(A, 28);
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ADC_InitStruType x;
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GPIO_InitSettingType y;
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y.Signal = GPIO_Pin_Signal_Analog; //模拟
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y.Dir = GPIO_Direction_Input; //输入
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y.Func = GPIO_Reuse_Func0;
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// GPIO_Init(GPIO_Pin_B9, &y);
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if (pin == 4) {
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GPIO_Init(GPIO_Pin_A4, &y);
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x.CHS = ADC_CHS_AIN8;
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} else if (pin == 8) {
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GPIO_Init(GPIO_Pin_B8, &y);
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x.CHS = ADC_CHS_AIN3;
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} else if (pin == 9) {
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GPIO_Init(GPIO_Pin_B9, &y);
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x.CHS = ADC_CHS_AIN4;
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}
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//经过分频以后Tadclk=1/(PCLK/4)约等于0.083us
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x.CLKS = ADC_CLKS_PCLK;
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x.CLKDIV = ADC_CLKDIV_1_4; /* ADC时钟源预分频 */
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//采集到的模拟量*3.3/4096=现在的电压
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x.VREF_SEL = ADC_VREF_SEL_0; /* 内部参考电压2.048v,设置内部参考电压为多少 */
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x.VREFP = ADC_VREFP_VDD; /* 选择芯片的工作电压VDD，adc的参考电压为多少 */
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x.VREFN = ADC_VREFN_VSS; /* 负向参考电压选择 */
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// x.CHS = ADC_CHS_AIN4;
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// x.CHS = ADC_CHS_AIN8;
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x.SMPS = ADC_SMPS_SOFT; /* AD采样模式为软件控制 */
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//采样时间st*2+1(个Tadclk)=1.743us
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x.ST = 10; /* AD采样时间选择 */
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x.BITSEL = ADC_BITSEL_12; /* AD分辨率12位 */
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ADC_Init(&x);
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}
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uint16_t get_adc_value(void) {
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uint16_t adc_value;
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ADC_SoftStart();
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while (ADC_GetConvStatus() == SET)
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; //正在转换
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adc_value = ADC_GetConvValue();
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ADC_SoftStop();
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return adc_value;
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}
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void adc_loop_gather(void) {
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static uint32_t adc_ticket = 0;
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uint16_t adc_value = 0;
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if (port_haspassedms(adc_ticket) > 500) {
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adc_ticket = get_sys_ticket();
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adc_value = get_adc_value();
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record_adc_gather_value(adc_value);
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}
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}
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void record_adc_gather_value(uint16_t adc_value) {
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/**
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* @brief 记录adc各个通道采集到的数据
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*
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*/
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for (int i = 0; i < 3; i++) {
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s_adc[i].adc_value_buff[s_adc[i].adc_value_count++] = adc_value;
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if (s_adc[i].adc_value_count == 5) {
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s_adc[i].past_count_reached_five = true;
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s_adc[i].adc_value_count = 0;
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}
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if (s_adc[i].past_count_reached_five == true) {
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beg_average_value(s_adc[i].adc_value_buff);
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}
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}
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}
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void beg_average_value(uint16_t *adc_buff) {
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uint16_t adc_average_value = 0;
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uint32_t adc_sum_value = 0;
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for (int i = 0; i < 5; i++) {
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adc_sum_value += *adc_buff;
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adc_buff++;
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}
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adc_average_value = adc_sum_value / 5;
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if (adc_average_value <= 16 || adc.abnormal_state == true) {
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adc.abnormal_state = true;
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process_voltage_abnormal();
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// printf("short out%d\r\n", adc_average_value); //短路
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} else {
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//例：adc_value=1700则电压=1700/4096=1.369
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printf("adc_value_t%d\r\n", adc_average_value);
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}
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}
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