PSoC™ 62 温湿采集功耗测试

发布于 2023-06-03 09:56:52 浏览：209016 订阅该版

https://club.rt-thread.org/ask/article/a14eed372d5e6aff.html
在这篇文章中我们展示如何采集温湿度计，今天向大家介绍采集温度后显示于墨水屏。并实现深度休眠模式，同时展示工作、休眠的电流检测。
1、增加墨水屏显示：
创建epaper文件夹并加入下图所示的spi驱动、墨水屏显示、绘画、字库等：

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230603/8bce93aaddbc42eecf7a5473fd6eb358.png)
2、main.c的实现：

```c
#include <rtthread.h>
#include <rtdevice.h>
#include "sensor_renesas_hs300x.h"
#include "drv_gpio.h"
#include <stdio.h>
#include "Display_EPD_w21.h"
#include "Display_EPD_W21_spi.h"
#include "fonts.h"
#include "GUI_Paint.h"

#define LED_PIN     GET_PIN(0, 0)
#define USE_SECONDS_FOR_ALARM 10
#define LONG_GLITCH_DELAY_MS        100u    /* in ms */
#define RTC_INTERRUPT_PRIORITY      3u

void set_rtc_alarm_date_time(void);
cyhal_rtc_t rtc_obj;
unsigned char BlackImage[4736];//Define canvas space
extern struct hs300x_device temp_humi_dev;
int main(void)
{
    cy_rslt_t result;
    float temp, humi;
    uint8_t show_str[20] = {0};
    EPD_GPIO_Init();       //EPD GPIO  initialization
    __enable_irq();
    rt_pin_mode(LED_PIN, PIN_MODE_OUTPUT);
    Paint_NewImage(BlackImage, 128, 296, 270, WHITE); //Set screen size and display orientation
    Paint_SelectImage(BlackImage);//Set the virtual canvas data storage location

Paint_NewImage(BlackImage, EPD_WIDTH, EPD_HEIGHT, 270, WHITE); //Set screen size and display orientation
    Paint_SelectImage(BlackImage);//Set the virtual canvas data storage location
    EPD_DeepSleep();

/* Initialize RTC */

cyhal_rtc_enable_event(&rtc_obj, CYHAL_RTC_ALARM, RTC_INTERRUPT_PRIORITY, true);
    set_rtc_alarm_date_time();
    for (;;)
    {
        /* Go to deep sleep */
        cyhal_syspm_deepsleep();

set_rtc_alarm_date_time();
        hs300x_read_data(&temp_humi_dev, &humi, &temp);
        EPD_HW_Init(); //Electronic paper initialization
        EPD_HW_Init_GUI(); //EPD init GUI
        Paint_Clear(WHITE);
        sprintf(show_str,"温度%02d.%02d℃",(int)temp, (int)(temp*100)%100);
        Paint_DrawString_CN(40,0,show_str, &Font24CN, WHITE, BLACK);
        sprintf(show_str,"湿度%02d.%02d%%",(int)humi, (int)(humi*100)%100);
        Paint_DrawString_CN(40,40,show_str, &Font24CN, WHITE, BLACK);
        EPD_Display(BlackImage); //display image
        EPD_DeepSleep();//EPD_DeepSleep,Sleep instruction is necessary, please do not delete!!!
    }
}
```
实现的效果：

![显示.jpg](https://oss-club.rt-thread.org/uploads/20230603/6e47bcba4b45a1bcd0c7735b1798694b.jpg.webp)
上传开发板以后工作电流为19MA，休眠电流为450uA左右。

![工作.jpg](https://oss-club.rt-thread.org/uploads/20230603/17355e6c5dc2d8c14ca7b043eb588a6f.jpg.webp)

![休眠电流.jpg](https://oss-club.rt-thread.org/uploads/20230603/a8603a0b5ea8e87f71f9a87813ab95b3.jpg.webp)

[展示视频](https://www.bilibili.com/video/BV1bP411X7vP/?pop_share=1&vd_source=e1bd226340c8b87027d5dcfc6b0c3344 "展示视频")