333 lines
10 KiB
C
333 lines
10 KiB
C
#include "FreeRTOS.h"
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#include "task.h"
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#include "gpio.h"
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#include "spi.h"
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#include "stm32f407xx.h"
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#include "utils.h"
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#include "ads1220.h"
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#include "dac7811.h"
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uint8_t RcvData[8];
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long ADS1220RTDGainCorrection = 1;
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long ADS1220TCGainCorrection = 1;
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BOOL ads1220_spi_init_flag = FALSE;
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static void ads1220_cs(cs_state_type state)
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{
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if (state == CS_L)
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{
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ADS1220_CS(GPIO_PIN_RESET);
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}
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else
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{
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ADS1220_CS(GPIO_PIN_SET);
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}
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}
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static void fun_ads1220_spi1_init(void)
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{
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hspi1.Instance = SPI1;
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hspi1.Init.Mode = SPI_MODE_MASTER;
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hspi1.Init.Direction = SPI_DIRECTION_2LINES;
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hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
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hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
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hspi1.Init.CLKPhase = SPI_PHASE_2EDGE;
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hspi1.Init.NSS = SPI_NSS_SOFT;
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hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_8;
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hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
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hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
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hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
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hspi1.Init.CRCPolynomial = 10;
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if (HAL_SPI_Init(&hspi1) != HAL_OK)
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{
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Error_Handler();
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}
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ADS1220_CS(GPIO_PIN_RESET);
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//DAC7811_CS(GPIO_PIN_SET);
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}
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// static void spi_write_byte(uint8_t data)
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// {
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// HAL_SPI_Transmit(&hspi1, &data, 1, 1000);
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// }
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// static void spi_write_read_byte(uint8_t *pTxData, uint8_t *pRxData)
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// {
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// HAL_SPI_TransmitReceive(&hspi1, pTxData, pRxData, 1, 1000);
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// }
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static void spi_write_read(uint8_t *pTxData, uint8_t *pRxData, uint16_t Size)
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{
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HAL_SPI_TransmitReceive(&hspi1, pTxData, pRxData, Size, 1000);
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}
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static void ads1220_write_regs(uint8_t *writeValues, uint8_t startReg, uint8_t length)
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{
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uint8_t outData[5];
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uint8_t i;
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outData[0] = ADS1220_WRITE_CMD(startReg, length); // 该命令为告诉芯片写入寄存器，并且告知长度和初始寄存器位置
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for (i = 0; i < length; i++)
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{
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outData[i + 1] = writeValues[i];
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}
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spi_write_read(outData, RcvData, length + 1); // Add 1 to length for command byte
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}
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/*
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static void ads1220_read_regs(uint8_t *readValues, uint8_t startReg, uint8_t length)
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{
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uint8_t outData[5] = {0x55, 0x55, 0x55, 0x55, 0x55};
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outData[0] = ADS1220_READ_CMD(startReg, length);
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spi_write_read(outData, readValues, length + 1); // 第一位作为命令数据
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}
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*/
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//static void ads1220_send_read_data_command(void)
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//{
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// uint8_t cmd = ADS1220_RDATA_CMD;
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// spi_write_read(&cmd, RcvData, 1);
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//}
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static void setup_ads1220(uint8_t inputMux, uint8_t opMode,
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uint8_t conversionMode, uint8_t dataRate, uint8_t gainLevel, uint8_t pgaBypass,
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uint8_t routeIDAC1, uint8_t routeIDAC2, uint8_t idacCurrent, uint8_t selectVref, uint8_t intTempSensor)
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{
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uint8_t config[4];
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config[0] = inputMux + gainLevel + pgaBypass;
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config[1] = dataRate + opMode + conversionMode + intTempSensor + ADS1220_BURN_OUT_CURRENT_OFF;
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config[2] = ADS1220_FIR_50_60 + selectVref + ADS1220_LOW_SIDE_POWER_OPEN + idacCurrent;
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config[3] = routeIDAC1 + routeIDAC2 + ADS1220_DRDY_ON_DRDY_ONLY;
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ads1220_write_regs(config, ADS1220_CONFIG_0_REG, 4);
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}
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/*一般单次转换时候采集时候使用的代码
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if(!Read_DRDY){//当检测到数据可读时
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ads1220_get_conversion_data(ADC1220.DigitValue);//启动读取函数
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ADS1220_Start();//及时发送一个下一次转换的信号
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ADC1220.AllDigit = (ADC1220.DigitValue[1]<<16)+(ADC1220.DigitValue[2]<<8)+ADC1220.DigitValue[3];//合并分开的24位数据
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if(ADC1220.DigitValue[1] < 0x80){//正负号判断
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ADC1220.AnalogValue = ((ADC1220.AllDigit)*VRef/0x800000);
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}
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else{
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ADC1220.AnalogValue = (-1)*((0xffffff-ADC1220.AllDigit)*VRef/0x800000);
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}
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*/
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/*ADS1220配置*/
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/*输入：
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inputMux :输入多路复用器配置（对于AINn=AVSS的设置，PGA必须（PGA_BYPASS=1）,并且仅可使用增益1，2，4）
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ADS1220_MUX_AIN0_AIN1
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ADS1220_MUX_AIN0_AIN2
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ADS1220_MUX_AIN0_AIN3
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ADS1220_MUX_AIN1_AIN2
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ADS1220_MUX_AIN1_AIN3
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ADS1220_MUX_AIN2_AIN3
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ADS1220_MUX_AIN1_AIN0
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ADS1220_MUX_AIN3_AIN2
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ADS1220_MUX_AIN0_AVSS
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ADS1220_MUX_AIN1_AVSS
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ADS1220_MUX_AIN2_AVSS
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ADS1220_MUX_AIN3_AVSS
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ADS1220_MUX_REFP-REFN
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ADS1220_MUX_AVDD-AVSS
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ADS1220_MUX_SHORTED
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opMode： 工作模式选择
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ADS1220_OP_MODE_NORMAL 正常模式（256kHz 调制时钟 默认设置）
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ADS1220_OP_MODE_DUTY 占空比模式（内部占空比1：4）
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ADS1220_OP_MODE_TURBO Turbo模式 （512kHz调制时钟）
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conversionMode: 转换模式
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ADS1220_CONVERSION_SINGLE_SHOT 单次
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ADS1220_CONVERSION_CONTINUOUS 连续
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dateRate：数据速率（详见说明书表18）
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ADS1220_DATA_RATE_20SPS
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ADS1220_DATA_RATE_45SPS
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ADS1220_DATA_RATE_90SPS
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ADS1220_DATA_RATE_175SPS
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ADS1220_DATA_RATE_330SPS
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ADS1220_DATA_RATE_600SPS
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ADS1220_DATA_RATE_1000SPS
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gainLevel:增益配置（在不使用PGA的情况下，可使用增益1，2，4.在这种情况下，通过开关电容结构获得增益）
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ADS1220_GAIN_1
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ADS1220_GAIN_2
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ADS1220_GAIN_4
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ADS1220_GAIN_8
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ADS1220_GAIN_16
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ADS1220_GAIN_32
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ADS1220_GAIN_64
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ADS1220_GAIN_128
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pgaBypass:禁止/启用可编程增益放大器（PGA）
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ADS1220_USE_PGA 启用
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ADS1220_PGA_BYPASS 禁用
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routeIDAC1:选择IDAC1将路由到的通道
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ADS1220_IDAC1_DISABLED
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ADS1220_IDAC1_AIN0
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ADS1220_IDAC1_AIN1
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ADS1220_IDAC1_AIN2
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ADS1220_IDAC1_AIN3
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ADS1220_IDAC1_REFP
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ADS1220_IDAC1_REFN
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routeIDAC2:选择IDAC2将路由到的通道
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ADS1220_IDAC2_DISABLED
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ADS1220_IDAC2_AIN0
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ADS1220_IDAC2_AIN1
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ADS1220_IDAC2_AIN2
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ADS1220_IDAC2_AIN3
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ADS1220_IDAC2_REFP
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ADS1220_IDAC2_REFN
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idacCurrent:IDAC电流设置
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ADS1220_IDAC_CURRENT_OFF
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ADS1220_IDAC_CURRENT_10_UA
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ADS1220_IDAC_CURRENT_50_UA
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ADS1220_IDAC_CURRENT_100_UA
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ADS1220_IDAC_CURRENT_250_UA
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ADS1220_IDAC_CURRENT_500_UA
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ADS1220_IDAC_CURRENT_1000_UA
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ADS1220_IDAC_CURRENT_1500_UA
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selectVref:基准电压选择
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ADS1220_VREF_INTERNAL 选择2.048V的内部基准电压（默认）
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ADS1220_VREF_EXT_REF0_PINS 使用专用REFP0和REFN0输入选择的外部基准电压
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ADS1220_VREF_EXT_REF1_PINS 使用AIN0/REFP1和AIN3/REFN1输入选择的外部基准电压
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ADS1220_VREF_AVDD 做基准的模拟电源（AVDD-AVSS）
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intTempSensor:温度传感器模式
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0：禁用 1：启用
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*/
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//static void ads1220_init(void)
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//{
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// setup_ads1220(
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// ADS1220_MUX_AIN0_AIN1, // 输入多路复用器配置
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// ADS1220_OP_MODE_NORMAL, // 工作模式选择
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// ADS1220_CONVERSION_SINGLE_SHOT, // 转换模式
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// ADS1220_DATA_RATE_45SPS, // 数据速率
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// ADS1220_GAIN_1, // 增益配置
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// ADS1220_PGA_BYPASS, // 禁止/启用可编程增益放大器
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// ADS1220_IDAC1_DISABLED, // 选择IDAC1将路由到的通道
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// ADS1220_IDAC2_DISABLED, // 选择IDAC2将路由到的通道
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// ADS1220_IDAC_CURRENT_OFF, // IDAC电流设置
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// ADS1220_VREF_EXT_REF0_PINS, // 基准电压选择
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// ADS1220_TEMP_SENSOR_OFF); // 温度传感器
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//}
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static void ads1220_reset(void)
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{
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uint8_t cmd = ADS1220_RESET_CMD;
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spi_write_read(&cmd, RcvData, 1);
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}
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static void ads1220_start(void)
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{
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uint8_t cmd = ADS1220_START_CMD;
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spi_write_read(&cmd, RcvData, 1);
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}
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//static void ads1220_powerdown(void)
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//{
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// uint8_t cmd = ADS1220_POWERDOWN_CMD;
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// spi_write_read(&cmd, RcvData, 1);
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//}
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static void ads1220_get_conversion_data(float32 *conversionData)
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{
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uint8_t out_data[3] = {0xff, 0xff, 0xff};
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uint8_t in_data[3] = {0};
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long data = 0;
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spi_write_read(out_data, in_data, 3);
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data = (((long)in_data[0] << 16) + ((long)in_data[1] << 8) + (long)in_data[2]);
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if (data & 0x800000)
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{
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data ^= 0x00FFFFFF;
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data += 1;
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}
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*conversionData = (float32)data * 2.5f / 8388608;
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}
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//static void ads1220_get_rtd_conversion_data_calibrated(volatile long *code)
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//{
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// uint8_t outData[3] = {0xff, 0xff, 0xff};
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// uint8_t tempData[3];
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// spi_write_read(outData, tempData, 3);
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// *code = (((long)tempData[0] << 16) + ((long)tempData[1] << 8) + (long)tempData[2]); // combine 3 Bytes of Conversion Data to 24 bit value
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// if (*code & 0x800000) // check if result is negative
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// {
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// *code ^= 0x00FFFFFF; // invert and make
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// *code += 1; // two's complement
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// }
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// *code = (long)((long long)(*code) * ADS1220RTDGainCorrection / 100000); // ADS1220 Gain correction
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//}
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void ads1220_operation(uint8_t channel, float32 *data_pv)
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{
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if (ads1220_spi_init_flag == FALSE)
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{
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ads1220_spi_init_flag = TRUE;
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dac7811_spi_init_flag = FALSE;
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fun_ads1220_spi1_init();
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}
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ads1220_cs(CS_L);
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vTaskDelay(10);
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if (channel == CH2_OUT_CUR)
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{
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ads1220_reset();
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vTaskDelay(5);
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setup_ads1220(
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ADS1220_MUX_AIN2_AVSS, // 输入多路复用器配置
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ADS1220_OP_MODE_NORMAL, // 工作模式选择
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ADS1220_CONVERSION_SINGLE_SHOT, // 转换模式
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ADS1220_DATA_RATE_45SPS, // 数据速率
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ADS1220_GAIN_1, // 增益配置
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ADS1220_PGA_BYPASS, // 禁止/启用可编程增益放大器
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ADS1220_IDAC1_DISABLED, // 选择IDAC1将路由到的通道
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ADS1220_IDAC2_DISABLED, // 选择IDAC2将路由到的通道
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ADS1220_IDAC_CURRENT_OFF, // IDAC电流设置
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ADS1220_VREF_EXT_REF0_PINS, // 基准电压选择
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ADS1220_TEMP_SENSOR_OFF); // 温度传感器
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vTaskDelay(5);
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ads1220_start();
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vTaskDelay(30);
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ads1220_get_conversion_data(data_pv);
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}
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else if (channel == CH10_IN_TC)
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{
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ads1220_reset();
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vTaskDelay(5);
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setup_ads1220(
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ADS1220_MUX_AIN0_AIN1, // 输入多路复用器配置
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ADS1220_OP_MODE_NORMAL, // 工作模式选择
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ADS1220_CONVERSION_SINGLE_SHOT, // 转换模式
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ADS1220_DATA_RATE_45SPS, // 数据速率
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ADS1220_GAIN_1, // 增益配置
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ADS1220_PGA_BYPASS, // 禁止/启用可编程增益放大器
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ADS1220_IDAC1_DISABLED, // 选择IDAC1将路由到的通道
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ADS1220_IDAC2_DISABLED, // 选择IDAC2将路由到的通道
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ADS1220_IDAC_CURRENT_OFF, // IDAC电流设置
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ADS1220_VREF_EXT_REF0_PINS, // 基准电压选择
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ADS1220_TEMP_SENSOR_OFF); // 温度传感器
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vTaskDelay(5);
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ads1220_start();
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vTaskDelay(30);
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ads1220_get_conversion_data(data_pv);
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}
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ads1220_cs(CS_H);
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vTaskDelay(5);
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}
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