202 lines
5.4 KiB
C
202 lines
5.4 KiB
C
#include "sts_weight_scale.h"
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uint32_t HX711_Buffer;
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uint32_t Weight_Maopi;
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int32_t Weight_Shiwu;
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uint8_t Flag_Error;
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int sts_weight_scale(void)
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{
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//Init_HX711pin();
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//delay_init();
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HX711_Init();
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//NVIC_Configuration(); //设置NVIC中断分组2:2位抢占优先级，2位响应优先级
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//uart_init(9600); //串口初始化为9600
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Get_Maopi(); //称毛皮重量
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HAL_Delay(2000);
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Get_Maopi(); //重新获取毛皮重量
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while(1)
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{
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Get_Weight();
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//printf("净重量 = %d g\r\n",Weight_Shiwu); //打印
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APP_LOG(TS_OFF, VLEVEL_M, "Net Weight = %d g \r\n", Weight_Shiwu);
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//delay_ms(1000);
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HAL_Delay(2000);
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}
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}
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/************************************************************************************
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*************************************************************************************/
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uint8_t Flag_Error = 0;
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//校准参数
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//因为不同的传感器特性曲线不是很一致，因此，每一个传感器需要矫正这里这个参数才能使测量值很准确。
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//当发现测试出来的重量偏大时，增加该数值。
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//如果测试出来的重量偏小时，减小改数值。
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//该值可以为小数
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//#define GapValue 106.5
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#define GapValue 909.5
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void HX711_Init(void)
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{
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GPIO_InitTypeDef GPIO_InitStruct = {0};
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__HAL_RCC_GPIOA_CLK_ENABLE();
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GPIO_InitStruct.Pin = HX711_SCK_PIN;
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GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
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HAL_GPIO_Init(HX711_SCK_PORT, &GPIO_InitStruct);
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//HX711_DOUT
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GPIO_InitStruct.Pin = HX711_DOUT_PIN;
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GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
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HAL_GPIO_Init(HX711_DOUT_PORT, &GPIO_InitStruct);
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HAL_GPIO_WritePin(HX711_SCK_PORT, HX711_SCK_PIN, GPIO_PIN_RESET);
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}
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//****************************************************
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//读取HX711
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//****************************************************
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uint32_t HX711_Read(void) //增益128
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{
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unsigned long count;
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unsigned char i;
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//HX711_DOUT=1;
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HAL_GPIO_WritePin(HX711_DOUT_PORT, HX711_DOUT_PIN, GPIO_PIN_SET);
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delay_us(1);
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//HX711_SCK=0;
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HAL_GPIO_WritePin(HX711_SCK_PORT, HX711_SCK_PIN, GPIO_PIN_RESET);
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count=0;
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uint32_t dout=0;
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//while(HX711_DOUT);
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while(HAL_GPIO_ReadPin(HX711_DOUT_PORT, HX711_DOUT_PIN)==GPIO_PIN_SET);
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for(i=0;i<24;i++)
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{
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//HX711_SCK=1;
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HAL_GPIO_WritePin(HX711_SCK_PORT, HX711_SCK_PIN, GPIO_PIN_SET);
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count=count<<1;
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delay_us(1);
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//HX711_SCK=0;
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HAL_GPIO_WritePin(HX711_SCK_PORT, HX711_SCK_PIN, GPIO_PIN_RESET);
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//if(HX711_DOUT)
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dout = HAL_GPIO_ReadPin(HX711_DOUT_PORT, HX711_DOUT_PIN);
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if (dout==GPIO_PIN_SET)
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count++;
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delay_us(1);
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}
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//HX711_SCK=1;
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HAL_GPIO_WritePin(HX711_SCK_PORT, HX711_SCK_PIN, GPIO_PIN_SET);
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count=count^0x800000;//第25个脉冲下降沿来时，转换数据
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delay_us(1);
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//HX711_SCK=0;
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HAL_GPIO_WritePin(HX711_SCK_PORT, HX711_SCK_PIN, GPIO_PIN_RESET);
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return(count);
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}
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//****************************************************
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//获取毛皮重量
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//****************************************************
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void Get_Maopi(void)
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{
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Weight_Maopi = HX711_Read();
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APP_LOG(TS_OFF, VLEVEL_M, "\r\n ##### Mao Pi =%d <<<<<< \r\n",Weight_Maopi);
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}
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//****************************************************
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//称重
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//****************************************************
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void Get_Weight(void)
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{
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HX711_Buffer = HX711_Read();
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if(HX711_Buffer > Weight_Maopi)
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{
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Weight_Shiwu = HX711_Buffer;
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Weight_Shiwu = Weight_Shiwu - Weight_Maopi; //获取实物的AD采样数值。
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Weight_Shiwu = (int32_t)((float)Weight_Shiwu/GapValue); //计算实物的实际重量
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//因为不同的传感器特性曲线不一样，因此，每一个传感器需要矫正这里的GapValue这个除数。
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//当发现测试出来的重量偏大时，增加该数值。
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APP_LOG(TS_OFF, VLEVEL_M, "\r\n ##### Weight_Shiwu =%d <<<<<< \r\n",Weight_Shiwu);//如果测试出来的重量偏小时，减小改数值。
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}
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}
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//延时nus
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//nus为要延时的us数.
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static uint8_t fac_us=0;//us延时倍乘数
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static uint16_t fac_ms=0;//ms延时倍乘数
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void delay_us(uint32_t nus)
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{
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fac_us=SystemCoreClock/8000000; //为系统时钟的1/8
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uint32_t temp;
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SysTick->LOAD=nus*fac_us; //时间加载
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SysTick->VAL=0x00; //清空计数器
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SysTick->CTRL|=SysTick_CTRL_ENABLE_Msk ; //开始倒数
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do
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{
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temp=SysTick->CTRL;
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}
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while(temp&0x01&&!(temp&(1<<16)));//等待时间到达 //bit16置一说明时间到，跳出循环
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SysTick->CTRL&=~SysTick_CTRL_ENABLE_Msk; //关闭计数器
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SysTick->VAL =0X00; //清空计数器
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}
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//延时nms
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//注意nms的范围
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//SysTick->LOAD为24位寄存器,所以,最大延时为:
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//nms<=0xffffff*8*1000/SYSCLK
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//SYSCLK单位为Hz,nms单位为ms
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//对72M条件下,nms<=1864
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void delay_ms(uint16_t nms)
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{
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fac_us=SystemCoreClock/8000000; //为系统时钟的1/8
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fac_ms=(uint16_t)fac_us*1000;//非ucos下,代表每个ms需要的systick时钟数
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uint32_t temp;
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SysTick->LOAD=(uint32_t)nms*fac_ms;//时间加载(SysTick->LOAD为24bit)
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SysTick->VAL =0x00; //清空计数器
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SysTick->CTRL|=SysTick_CTRL_ENABLE_Msk ; //开始倒数
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do
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{
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temp=SysTick->CTRL;
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}
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while(temp&0x01&&!(temp&(1<<16)));//等待时间到达
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SysTick->CTRL&=~SysTick_CTRL_ENABLE_Msk; //关闭计数器
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SysTick->VAL =0X00; //清空计数器
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}
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