117 lines
1.8 KiB
C
117 lines
1.8 KiB
C
#include "ads1230.h"
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#include "events_init.h"
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long ads1230_vol = 0;
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void ads1230_gpio_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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/*
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PA1---ADS1230 SCLK
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PA6---ADS1230 DOUT
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PB8---ADS1230 PDWN
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*/
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GPIO_InitStruct.Pin = GPIO_PIN_1;
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GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
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HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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GPIO_InitStruct.Pin = GPIO_PIN_6;
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GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
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HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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HAL_GPIO_WritePin(GPIOA, GPIO_PIN_1, GPIO_PIN_RESET);
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}
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uint8_t ads1230_init(void)
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{
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ads1230_gpio_init();
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int i = 0;
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ADS1230_PDWN_HIGH();
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ADS1230_SCLK_LOW();
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do{
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i++;
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if(i == 60000)
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return 0;
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}while(ADS1230_READ);
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ADS1230_PDWN_LOW();
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delay_tick(30);
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ADS1230_PDWN_HIGH();
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delay_tick(10);
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for(i=0;i<26;i++)
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{
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ADS1230_SCLK_HIGH();
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ADS1230_SCLK_LOW();
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}
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return 1;
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}
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long ads1230_read(void)
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{
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long dat=0;
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int i = 0;
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do{
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i++;
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if(i == 60000)
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return 0;
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}while(ADS1230_READ);
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for(i=0;i<20;i++)
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{
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dat<<=1;
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ADS1230_SCLK_HIGH();
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ADS1230_SCLK_LOW();
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if(ADS1230_READ)
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dat|=0x01;
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}
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for(i=0;i<4;i++)
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{
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ADS1230_SCLK_HIGH();
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ADS1230_SCLK_LOW();
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}
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if((dat&0x80000) != 0) //数据为负数
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{
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dat -= 0xfffff;
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}
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return dat;
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}
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void get_ads1230_vol(void)
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{
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ads1230_vol = ads1230_read() * 3300.0 / 524288.0;
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//测试过程中确定采样电压的极值和对应位置
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if(test_status == 2)
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{
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if(maxv < ads1230_vol)
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{
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max_point_cnt = point_data.cnt;
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maxv = ads1230_vol;
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maxv_loca = ((CaptureNumber - 30000) / 720.0) * 254.0;
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}
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if(minv > ads1230_vol)
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{
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min_point_cnt = point_data.cnt;
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minv = ads1230_vol;
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minv_loca = ((CaptureNumber - 30000) / 720.0) * 254.0;
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}
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}
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}
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