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add bmpe280
This commit is contained in:
Edward Emelianov
parent
d5ba933c30
commit
8a0277171a
345
BMPE280/BMP280.c
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345
BMPE280/BMP280.c
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/*
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* This file is part of the bmp280 project.
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* Copyright 2022 Edward V. Emelianov <edward.emelianoff@gmail.com>.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <usefull_macros.h>
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#include "i2c.h"
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#include "BMP280.h"
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/**
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* BMP280 registers
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*/
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#define BMP280_REG_HUM_LSB 0xFE
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#define BMP280_REG_HUM_MSB 0xFD
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#define BMP280_REG_HUM (BMP280_REG_HUM_MSB)
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#define BMP280_REG_TEMP_XLSB 0xFC /* bits: 7-4 */
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#define BMP280_REG_TEMP_LSB 0xFB
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#define BMP280_REG_TEMP_MSB 0xFA
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#define BMP280_REG_TEMP (BMP280_REG_TEMP_MSB)
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#define BMP280_REG_PRESS_XLSB 0xF9 /* bits: 7-4 */
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#define BMP280_REG_PRESS_LSB 0xF8
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#define BMP280_REG_PRESS_MSB 0xF7
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#define BMP280_REG_PRESSURE (BMP280_REG_PRESS_MSB)
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#define BMP280_REG_ALLDATA (BMP280_REG_PRESS_MSB) // all data: P, T & H
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#define BMP280_REG_CONFIG 0xF5 /* bits: 7-5 t_sb; 4-2 filter; 0 spi3w_en */
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#define BMP280_REG_CTRL 0xF4 /* bits: 7-5 osrs_t; 4-2 osrs_p; 1-0 mode */
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#define BMP280_REG_STATUS 0xF3 /* bits: 3 measuring; 0 im_update */
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#define BMP280_STATUS_MSRNG (1<<3) // measuring flag
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#define BMP280_STATUS_UPDATE (1<<0) // update flag
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#define BMP280_REG_CTRL_HUM 0xF2 /* bits: 2-0 osrs_h; */
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#define BMP280_REG_RESET 0xE0
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#define BMP280_RESET_VALUE 0xB6
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#define BMP280_REG_ID 0xD0
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#define BMP280_REG_CALIBA 0x88
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#define BMP280_CALIBA_SIZE (26) // 26 bytes of calibration registers sequence from 0x88 to 0xa1
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#define BMP280_CALIBB_SIZE (7) // 7 bytes of calibration registers sequence from 0xe1 to 0xe7
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#define BMP280_REG_CALIB_H1 0xA1 // dig_H1
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#define BMP280_REG_CALIBB 0xE1
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#define BMP280_MODE_FORSED (1) // force single measurement
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#define BMP280_MODE_NORMAL (3) // run continuosly
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static struct {
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// temperature
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uint16_t dig_T1; // 0x88 (LSB), 0x98 (MSB)
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int16_t dig_T2; // ...
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int16_t dig_T3;
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// pressure
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uint16_t dig_P1;
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int16_t dig_P2;
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int16_t dig_P3;
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int16_t dig_P4;
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int16_t dig_P5;
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int16_t dig_P6;
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int16_t dig_P7;
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int16_t dig_P8;
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int16_t dig_P9; // 0x9e, 0x9f
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// humidity (partially calculated from EEE struct)
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uint8_t unused; // 0xA0
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uint8_t dig_H1; // 0xA1
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int16_t dig_H2; // 0xE1...
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uint8_t dig_H3; // only from EEE
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uint16_t dig_H4;
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uint16_t dig_H5;
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int8_t dig_H6;
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// data is ready
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uint8_t rdy;
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} __attribute__ ((packed)) CaliData = {0};
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// data for humidity calibration of BME280
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static uint8_t EEE[BMP280_CALIBB_SIZE] = {0};
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static struct{
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BMP280_Filter filter; // filtering
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BMP280_Oversampling p_os; // oversampling for pressure
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BMP280_Oversampling t_os; // -//- temperature
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BMP280_Oversampling h_os; // -//- humidity
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uint8_t ID; // identificator
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uint8_t regctl; // control register base value [(params.t_os << 5) | (params.p_os << 2)]
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} params = {
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.filter = BMP280_FILTER_OFF,
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.p_os = BMP280_OVERS16,
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.t_os = BMP280_OVERS16,
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.h_os = BMP280_OVERS16,
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.ID = 0
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};
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static BMP280_status bmpstatus = BMP280_NOTINIT;
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BMP280_status BMP280_get_status(){
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return bmpstatus;
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}
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// setters for `params`
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void BMP280_setfilter(BMP280_Filter f){
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params.filter = f;
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}
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void BMP280_setOSt(BMP280_Oversampling os){
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params.t_os = os;
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}
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void BMP280_setOSp(BMP280_Oversampling os){
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params.p_os = os;
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}
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void BMP280_setOSh(BMP280_Oversampling os){
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params.h_os = os;
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}
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// get compensation data, return 1 if OK
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static int readcompdata(){
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FNAME();
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if(!i2c_read_data8(BMP280_REG_CALIBA, BMP280_CALIBA_SIZE, (uint8_t*)&CaliData)){
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DBG("Can't read calibration A data");
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return FALSE;
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}
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/*
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// convert big-endian into little-endian
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uint8_t *arr = (uint8_t*)&CaliData;
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for(int i = 0; i < (int)sizeof(CaliData); i+=2){
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register uint8_t val = arr[i];
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arr[i] = arr[i+1];
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arr[i+1] = val;
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}*/
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if(params.ID == BME280_CHIP_ID){
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if(!i2c_read_reg8(BMP280_REG_CALIB_H1, &CaliData.dig_H1)){
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WARNX("Can't read dig_H1");
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return FALSE;
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}
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if(!i2c_read_data8(BMP280_REG_CALIBB, BMP280_CALIBB_SIZE, EEE)){
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WARNX("Can't read rest of dig_Hx");
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return FALSE;
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}
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// E5 is divided by two parts so we need this sex
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CaliData.dig_H2 = (EEE[1] << 8) | EEE[0];
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CaliData.dig_H3 = EEE[2];
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CaliData.dig_H4 = (EEE[3] << 4) | (EEE[4] & 0x0f);
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CaliData.dig_H5 = (EEE[5] << 4) | (EEE[4] >> 4);
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CaliData.dig_H6 = EEE[6];
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}
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CaliData.rdy = 1;
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DBG("Calibration rdy");
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return TRUE;
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}
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// do a soft-reset procedure
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int BMP280_reset(){
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if(!i2c_write_reg8(BMP280_REG_RESET, BMP280_RESET_VALUE)){
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DBG("Can't reset\n");
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return FALSE;
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}
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return TRUE;
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}
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// read compensation data & write registers
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int BMP280_init(){
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bmpstatus = BMP280_NOTINIT;
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if(!i2c_read_reg8(BMP280_REG_ID, ¶ms.ID)){
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DBG("Can't read BMP280_REG_ID");
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return FALSE;
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}
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DBG("Got device ID: 0x%02x", params.ID);
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if(params.ID != BMP280_CHIP_ID && params.ID != BME280_CHIP_ID){
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WARNX("Not BMP/BME\n");
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return FALSE;
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}
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if(!BMP280_reset()){
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WARNX("Can't reset");
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return FALSE;
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}
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uint8_t reg = 1;
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while(reg & BMP280_STATUS_UPDATE){ // wait while update is done
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if(!i2c_read_reg8(BMP280_REG_STATUS, ®)){
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DBG("Can't read status");
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return FALSE;
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}
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}
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if(!readcompdata()){
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DBG("Can't read calibration data\n");
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return FALSE;
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}else{
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DBG("T: %d, %d, %d", CaliData.dig_T1, CaliData.dig_T2, CaliData.dig_T3);
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DBG("\P: %d, %d, %d, %d, %d, %d, %d, %d, %d", CaliData.dig_P1, CaliData.dig_P2, CaliData.dig_P3,
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CaliData.dig_P4, CaliData.dig_P5, CaliData.dig_P6, CaliData.dig_P7, CaliData.dig_P8, CaliData.dig_P9);
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if(params.ID == BME280_CHIP_ID){ // read H compensation
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DBG("H: %d, %d, %d, %d, %d, %d", CaliData.dig_H1, CaliData.dig_H2, CaliData.dig_H3,
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CaliData.dig_H4, CaliData.dig_H5, CaliData.dig_H6);
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}
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}
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// write filter configuration
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reg = params.filter << 2;
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if(!i2c_write_reg8(BMP280_REG_CONFIG, reg)){
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DBG("Can't save filter settings\n");
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return FALSE;
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}
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reg = (params.t_os << 5) | (params.p_os << 2); // oversampling for P/T, sleep mode
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if(!i2c_write_reg8(BMP280_REG_CTRL, reg)){
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DBG("Can't write settings for P/T\n");
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return FALSE;
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}
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params.regctl = reg;
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if(params.ID == BME280_CHIP_ID){ // write CTRL_HUM only AFTER CTRL!
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reg = params.h_os;
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if(!i2c_write_reg8(BMP280_REG_CTRL_HUM, reg)){
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DBG("Can't write settings for H\n");
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return FALSE;
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}
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}
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DBG("OK, inited");
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bmpstatus = BMP280_RELAX;
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return TRUE;
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}
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// @return 1 if OK, *devid -> BMP/BME
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void BMP280_read_ID(uint8_t *devid){
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if(devid) *devid = params.ID;
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}
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// start measurement, @return 1 if all OK
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int BMP280_start(){
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if(!CaliData.rdy || bmpstatus == BMP280_BUSY){
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DBG("rdy=%d, status=%d", CaliData.rdy, bmpstatus);
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return FALSE;
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}
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uint8_t reg = params.regctl | BMP280_MODE_FORSED; // start single measurement
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if(!i2c_write_reg8(BMP280_REG_CTRL, reg)){
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DBG("Can't write CTRL reg\n");
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return FALSE;
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}
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bmpstatus = BMP280_BUSY;
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return TRUE;
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}
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// return T in degC
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static inline float compTemp(int32_t adc_temp, int32_t *t_fine){
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int32_t var1, var2;
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var1 = ((((adc_temp >> 3) - ((int32_t) CaliData.dig_T1 << 1)))
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* (int32_t) CaliData.dig_T2) >> 11;
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var2 = (((((adc_temp >> 4) - (int32_t) CaliData.dig_T1)
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* ((adc_temp >> 4) - (int32_t) CaliData.dig_T1)) >> 12)
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* (int32_t) CaliData.dig_T3) >> 14;
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*t_fine = var1 + var2;
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return ((*t_fine * 5 + 128) >> 8) / 100.f;
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}
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// return P in Pa
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static inline float compPres(int32_t adc_press, int32_t fine_temp) {
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int64_t var1, var2, p;
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var1 = (int64_t) fine_temp - 128000;
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var2 = var1 * var1 * (int64_t) CaliData.dig_P6;
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var2 = var2 + ((var1 * (int64_t) CaliData.dig_P5) << 17);
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var2 = var2 + (((int64_t) CaliData.dig_P4) << 35);
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var1 = ((var1 * var1 * (int64_t) CaliData.dig_P3) >> 8)
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+ ((var1 * (int64_t) CaliData.dig_P2) << 12);
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var1 = (((int64_t) 1 << 47) + var1) * ((int64_t) CaliData.dig_P1) >> 33;
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if (var1 == 0){
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return 0; // avoid exception caused by division by zero
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}
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p = 1048576 - adc_press;
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p = (((p << 31) - var2) * 3125) / var1;
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var1 = ((int64_t) CaliData.dig_P9 * (p >> 13) * (p >> 13)) >> 25;
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var2 = ((int64_t) CaliData.dig_P8 * p) >> 19;
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p = ((p + var1 + var2) >> 8) + ((int64_t) CaliData.dig_P7 << 4);
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return p/256.f;
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}
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// return H in percents
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static inline float compHum(int32_t adc_hum, int32_t fine_temp){
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int32_t v_x1_u32r;
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v_x1_u32r = fine_temp - (int32_t) 76800;
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v_x1_u32r = ((((adc_hum << 14) - (((int32_t)CaliData.dig_H4) << 20)
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- (((int32_t)CaliData.dig_H5) * v_x1_u32r)) + (int32_t)16384) >> 15)
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* (((((((v_x1_u32r * ((int32_t)CaliData.dig_H6)) >> 10)
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* (((v_x1_u32r * ((int32_t)CaliData.dig_H3)) >> 11)
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+ (int32_t)32768)) >> 10) + (int32_t)2097152)
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* ((int32_t)CaliData.dig_H2) + 8192) >> 14);
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v_x1_u32r = v_x1_u32r
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- (((((v_x1_u32r >> 15) * (v_x1_u32r >> 15)) >> 7)
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* ((int32_t)CaliData.dig_H1)) >> 4);
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v_x1_u32r = v_x1_u32r < 0 ? 0 : v_x1_u32r;
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v_x1_u32r = v_x1_u32r > 419430400 ? 419430400 : v_x1_u32r;
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return (v_x1_u32r >> 12)/1024.f;
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}
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void BMP280_process(){
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if(bmpstatus != BMP280_BUSY) return;
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// BUSY state: poll data ready
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uint8_t reg;
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if(!i2c_read_reg8(BMP280_REG_STATUS, ®)) return;
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if(reg & BMP280_STATUS_MSRNG) return; // still busy
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bmpstatus = BMP280_RDY; // data ready
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}
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// read data & convert it
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int BMP280_getdata(float *T, float *P, float *H){
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if(bmpstatus != BMP280_RDY) return FALSE;
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bmpstatus = BMP280_RELAX;
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uint8_t datasz = 8; // amount of bytes to read
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if(params.ID != BME280_CHIP_ID){
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DBG("Not BME!\n");
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if(H) *H = 0;
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datasz = 6;
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}
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uint8_t data[8];
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if(!i2c_read_data8(BMP280_REG_ALLDATA, datasz, data)){
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DBG("Can't read data");
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return FALSE;
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}
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#ifdef EBUG
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||||||
|
printf("\tgot data: ");
|
||||||
|
for(int i = 0; i < datasz; ++i){
|
||||||
|
printf("0x%02x ", data[i]);
|
||||||
|
}
|
||||||
|
printf("\n");
|
||||||
|
#endif
|
||||||
|
int32_t p = (data[0] << 12) | (data[1] << 4) | (data[2] >> 4);
|
||||||
|
DBG("puncomp = %d", p);
|
||||||
|
int32_t t = (data[3] << 12) | (data[4] << 4) | (data[5] >> 4);
|
||||||
|
DBG("tuncomp = %d", t);
|
||||||
|
int32_t t_fine;
|
||||||
|
float Temp = compTemp(t, &t_fine);
|
||||||
|
DBG("tfine = %d", t_fine);
|
||||||
|
if(T) *T = Temp;
|
||||||
|
if(P) *P = compPres(p, t_fine);
|
||||||
|
if(H && params.ID == BME280_CHIP_ID){
|
||||||
|
int32_t h = (data[6] << 8) | data[7];
|
||||||
|
DBG("huncomp = %d", h);
|
||||||
|
*H = compHum(h, t_fine);
|
||||||
|
}
|
||||||
|
return TRUE;
|
||||||
|
}
|
||||||
66
BMPE280/BMP280.h
Normal file
66
BMPE280/BMP280.h
Normal file
@ -0,0 +1,66 @@
|
|||||||
|
/*
|
||||||
|
* This file is part of the BMP280 project.
|
||||||
|
* Copyright 2021 Edward V. Emelianov <edward.emelianoff@gmail.com>.
|
||||||
|
*
|
||||||
|
* This program is free software: you can redistribute it and/or modify
|
||||||
|
* it under the terms of the GNU General Public License as published by
|
||||||
|
* the Free Software Foundation, either version 3 of the License, or
|
||||||
|
* (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#pragma once
|
||||||
|
#include <stdint.h>
|
||||||
|
|
||||||
|
#define BMP280_I2C_ADDRESS (0x76)
|
||||||
|
|
||||||
|
#define BMP280_CHIP_ID 0x58
|
||||||
|
#define BME280_CHIP_ID 0x60
|
||||||
|
|
||||||
|
typedef enum{ // K for filtering: next = [prev*(k-1) + data_ADC]/k
|
||||||
|
BMP280_FILTER_OFF = 0, // k=1, no filtering
|
||||||
|
BMP280_FILTER_2 = 1, // k=2, 2 samples to reach >75% of data_ADC
|
||||||
|
BMP280_FILTER_4 = 2, // k=4, 5 samples
|
||||||
|
BMP280_FILTER_8 = 3, // k=8, 11 samples
|
||||||
|
BMP280_FILTER_16 = 4, // k=16, 22 samples
|
||||||
|
BMP280_FILTERMAX
|
||||||
|
} BMP280_Filter;
|
||||||
|
|
||||||
|
typedef enum{ // Number of oversampling
|
||||||
|
BMP280_NOMEASUR = 0,
|
||||||
|
BMP280_OVERS1 = 1,
|
||||||
|
BMP280_OVERS2 = 2,
|
||||||
|
BMP280_OVERS4 = 3,
|
||||||
|
BMP280_OVERS8 = 4,
|
||||||
|
BMP280_OVERS16 = 5,
|
||||||
|
BMP280_OVERSMAX
|
||||||
|
} BMP280_Oversampling;
|
||||||
|
|
||||||
|
typedef enum{
|
||||||
|
BMP280_NOTINIT, // wasn't inited
|
||||||
|
BMP280_BUSY, // measurement in progress
|
||||||
|
BMP280_ERR, // error in I2C
|
||||||
|
BMP280_RELAX, // relaxed state
|
||||||
|
BMP280_RDY, // data ready - can get it
|
||||||
|
} BMP280_status;
|
||||||
|
|
||||||
|
int BMP280_reset();
|
||||||
|
int BMP280_init();
|
||||||
|
void BMP280_read_ID(uint8_t *devid);
|
||||||
|
void BMP280_setfilter(BMP280_Filter f);
|
||||||
|
void BMP280_setOSt(BMP280_Oversampling os);
|
||||||
|
void BMP280_setOSp(BMP280_Oversampling os);
|
||||||
|
// BME280 (humidity)
|
||||||
|
void BMP280_setOSh(BMP280_Oversampling os);
|
||||||
|
BMP280_status BMP280_get_status();
|
||||||
|
int BMP280_start();
|
||||||
|
void BMP280_process();
|
||||||
|
int BMP280_getdata(float *T, float *P, float *H);
|
||||||
|
|
||||||
57
BMPE280/Makefile
Normal file
57
BMPE280/Makefile
Normal file
@ -0,0 +1,57 @@
|
|||||||
|
# run `make DEF=...` to add extra defines
|
||||||
|
PROGRAM := bmp280
|
||||||
|
LDFLAGS := -fdata-sections -ffunction-sections -Wl,--gc-sections -Wl,--discard-all
|
||||||
|
LDFLAGS += -lusefull_macros
|
||||||
|
SRCS := $(wildcard *.c)
|
||||||
|
DEFINES := $(DEF) -D_GNU_SOURCE -D_XOPEN_SOURCE=1111
|
||||||
|
OBJDIR := mk
|
||||||
|
CFLAGS += -O2 -Wall -Wextra -Wno-trampolines -std=gnu99
|
||||||
|
OBJS := $(addprefix $(OBJDIR)/, $(SRCS:%.c=%.o))
|
||||||
|
DEPS := $(OBJS:.o=.d)
|
||||||
|
TARGFILE := $(OBJDIR)/TARGET
|
||||||
|
CC = gcc
|
||||||
|
#TARGET := RELEASE
|
||||||
|
|
||||||
|
ifeq ($(shell test -e $(TARGFILE) && echo -n yes),yes)
|
||||||
|
TARGET := $(file < $(TARGFILE))
|
||||||
|
else
|
||||||
|
TARGET := RELEASE
|
||||||
|
endif
|
||||||
|
|
||||||
|
ifeq ($(TARGET), DEBUG)
|
||||||
|
.DEFAULT_GOAL := debug
|
||||||
|
endif
|
||||||
|
|
||||||
|
release: $(PROGRAM)
|
||||||
|
|
||||||
|
debug: CFLAGS += -DEBUG -Werror
|
||||||
|
debug: TARGET := DEBUG
|
||||||
|
debug: $(PROGRAM)
|
||||||
|
|
||||||
|
$(TARGFILE): $(OBJDIR)
|
||||||
|
@echo -e "\t\tTARGET: $(TARGET)"
|
||||||
|
@echo "$(TARGET)" > $(TARGFILE)
|
||||||
|
|
||||||
|
$(PROGRAM) : $(TARGFILE) $(OBJS)
|
||||||
|
@echo -e "\t\tLD $(PROGRAM)"
|
||||||
|
$(CC) $(OBJS) $(LDFLAGS) -o $(PROGRAM)
|
||||||
|
|
||||||
|
$(OBJDIR):
|
||||||
|
@mkdir $(OBJDIR)
|
||||||
|
|
||||||
|
ifneq ($(MAKECMDGOALS),clean)
|
||||||
|
-include $(DEPS)
|
||||||
|
endif
|
||||||
|
|
||||||
|
$(OBJDIR)/%.o: %.c
|
||||||
|
@echo -e "\t\tCC $<"
|
||||||
|
$(CC) $< -MD -c $(LDFLAGS) $(CFLAGS) $(DEFINES) -o $@
|
||||||
|
|
||||||
|
clean:
|
||||||
|
@echo -e "\t\tCLEAN"
|
||||||
|
@rm -rf $(OBJDIR) 2>/dev/null || true
|
||||||
|
|
||||||
|
xclean: clean
|
||||||
|
@rm -f $(PROGRAM)
|
||||||
|
|
||||||
|
.PHONY: clean xclean
|
||||||
1
BMPE280/Readme
Normal file
1
BMPE280/Readme
Normal file
@ -0,0 +1 @@
|
|||||||
|
Code for BMP280/BME280
|
||||||
1
BMPE280/bmp280.cflags
Normal file
1
BMPE280/bmp280.cflags
Normal file
@ -0,0 +1 @@
|
|||||||
|
-std=c17
|
||||||
2
BMPE280/bmp280.config
Normal file
2
BMPE280/bmp280.config
Normal file
@ -0,0 +1,2 @@
|
|||||||
|
#define _XOPEN_SOURCE 9999
|
||||||
|
#define _POSIX_C_SOURCE 333333L
|
||||||
1
BMPE280/bmp280.creator
Normal file
1
BMPE280/bmp280.creator
Normal file
@ -0,0 +1 @@
|
|||||||
|
[General]
|
||||||
174
BMPE280/bmp280.creator.user
Normal file
174
BMPE280/bmp280.creator.user
Normal file
@ -0,0 +1,174 @@
|
|||||||
|
<?xml version="1.0" encoding="UTF-8"?>
|
||||||
|
<!DOCTYPE QtCreatorProject>
|
||||||
|
<!-- Written by QtCreator 6.0.0, 2022-09-25T19:34:55. -->
|
||||||
|
<qtcreator>
|
||||||
|
<data>
|
||||||
|
<variable>EnvironmentId</variable>
|
||||||
|
<value type="QByteArray">{7bd84e39-ca37-46d3-be9d-99ebea85bc0d}</value>
|
||||||
|
</data>
|
||||||
|
<data>
|
||||||
|
<variable>ProjectExplorer.Project.ActiveTarget</variable>
|
||||||
|
<value type="int">0</value>
|
||||||
|
</data>
|
||||||
|
<data>
|
||||||
|
<variable>ProjectExplorer.Project.EditorSettings</variable>
|
||||||
|
<valuemap type="QVariantMap">
|
||||||
|
<value type="bool" key="EditorConfiguration.AutoIndent">true</value>
|
||||||
|
<value type="bool" key="EditorConfiguration.AutoSpacesForTabs">false</value>
|
||||||
|
<value type="bool" key="EditorConfiguration.CamelCaseNavigation">true</value>
|
||||||
|
<valuemap type="QVariantMap" key="EditorConfiguration.CodeStyle.0">
|
||||||
|
<value type="QString" key="language">Cpp</value>
|
||||||
|
<valuemap type="QVariantMap" key="value">
|
||||||
|
<value type="QByteArray" key="CurrentPreferences">CppGlobal</value>
|
||||||
|
</valuemap>
|
||||||
|
</valuemap>
|
||||||
|
<valuemap type="QVariantMap" key="EditorConfiguration.CodeStyle.1">
|
||||||
|
<value type="QString" key="language">QmlJS</value>
|
||||||
|
<valuemap type="QVariantMap" key="value">
|
||||||
|
<value type="QByteArray" key="CurrentPreferences">QmlJSGlobal</value>
|
||||||
|
</valuemap>
|
||||||
|
</valuemap>
|
||||||
|
<value type="int" key="EditorConfiguration.CodeStyle.Count">2</value>
|
||||||
|
<value type="QByteArray" key="EditorConfiguration.Codec">KOI8-R</value>
|
||||||
|
<value type="bool" key="EditorConfiguration.ConstrainTooltips">false</value>
|
||||||
|
<value type="int" key="EditorConfiguration.IndentSize">4</value>
|
||||||
|
<value type="bool" key="EditorConfiguration.KeyboardTooltips">false</value>
|
||||||
|
<value type="int" key="EditorConfiguration.MarginColumn">80</value>
|
||||||
|
<value type="bool" key="EditorConfiguration.MouseHiding">true</value>
|
||||||
|
<value type="bool" key="EditorConfiguration.MouseNavigation">true</value>
|
||||||
|
<value type="int" key="EditorConfiguration.PaddingMode">1</value>
|
||||||
|
<value type="bool" key="EditorConfiguration.PreferSingleLineComments">false</value>
|
||||||
|
<value type="bool" key="EditorConfiguration.ScrollWheelZooming">true</value>
|
||||||
|
<value type="bool" key="EditorConfiguration.ShowMargin">false</value>
|
||||||
|
<value type="int" key="EditorConfiguration.SmartBackspaceBehavior">0</value>
|
||||||
|
<value type="bool" key="EditorConfiguration.SmartSelectionChanging">true</value>
|
||||||
|
<value type="bool" key="EditorConfiguration.SpacesForTabs">true</value>
|
||||||
|
<value type="int" key="EditorConfiguration.TabKeyBehavior">0</value>
|
||||||
|
<value type="int" key="EditorConfiguration.TabSize">8</value>
|
||||||
|
<value type="bool" key="EditorConfiguration.UseGlobal">true</value>
|
||||||
|
<value type="bool" key="EditorConfiguration.UseIndenter">false</value>
|
||||||
|
<value type="int" key="EditorConfiguration.Utf8BomBehavior">1</value>
|
||||||
|
<value type="bool" key="EditorConfiguration.addFinalNewLine">true</value>
|
||||||
|
<value type="bool" key="EditorConfiguration.cleanIndentation">false</value>
|
||||||
|
<value type="bool" key="EditorConfiguration.cleanWhitespace">true</value>
|
||||||
|
<value type="QString" key="EditorConfiguration.ignoreFileTypes">*.md, *.MD, Makefile</value>
|
||||||
|
<value type="bool" key="EditorConfiguration.inEntireDocument">false</value>
|
||||||
|
<value type="bool" key="EditorConfiguration.skipTrailingWhitespace">true</value>
|
||||||
|
</valuemap>
|
||||||
|
</data>
|
||||||
|
<data>
|
||||||
|
<variable>ProjectExplorer.Project.PluginSettings</variable>
|
||||||
|
<valuemap type="QVariantMap">
|
||||||
|
<valuemap type="QVariantMap" key="AutoTest.ActiveFrameworks">
|
||||||
|
<value type="bool" key="AutoTest.Framework.Boost">true</value>
|
||||||
|
<value type="bool" key="AutoTest.Framework.CTest">false</value>
|
||||||
|
<value type="bool" key="AutoTest.Framework.Catch">true</value>
|
||||||
|
<value type="bool" key="AutoTest.Framework.GTest">true</value>
|
||||||
|
<value type="bool" key="AutoTest.Framework.QtQuickTest">true</value>
|
||||||
|
<value type="bool" key="AutoTest.Framework.QtTest">true</value>
|
||||||
|
</valuemap>
|
||||||
|
<valuemap type="QVariantMap" key="AutoTest.CheckStates"/>
|
||||||
|
<value type="int" key="AutoTest.RunAfterBuild">0</value>
|
||||||
|
<value type="bool" key="AutoTest.UseGlobal">true</value>
|
||||||
|
<valuelist type="QVariantList" key="ClangCodeModel.CustomCommandLineKey"/>
|
||||||
|
<value type="bool" key="ClangCodeModel.UseGlobalConfig">true</value>
|
||||||
|
<value type="QString" key="ClangCodeModel.WarningConfigId">Builtin.BuildSystem</value>
|
||||||
|
<valuemap type="QVariantMap" key="ClangTools">
|
||||||
|
<value type="bool" key="ClangTools.AnalyzeOpenFiles">true</value>
|
||||||
|
<value type="bool" key="ClangTools.BuildBeforeAnalysis">true</value>
|
||||||
|
<value type="QString" key="ClangTools.DiagnosticConfig">Builtin.DefaultTidyAndClazy</value>
|
||||||
|
<value type="int" key="ClangTools.ParallelJobs">2</value>
|
||||||
|
<valuelist type="QVariantList" key="ClangTools.SelectedDirs"/>
|
||||||
|
<valuelist type="QVariantList" key="ClangTools.SelectedFiles"/>
|
||||||
|
<valuelist type="QVariantList" key="ClangTools.SuppressedDiagnostics"/>
|
||||||
|
<value type="bool" key="ClangTools.UseGlobalSettings">true</value>
|
||||||
|
</valuemap>
|
||||||
|
</valuemap>
|
||||||
|
</data>
|
||||||
|
<data>
|
||||||
|
<variable>ProjectExplorer.Project.Target.0</variable>
|
||||||
|
<valuemap type="QVariantMap">
|
||||||
|
<value type="QString" key="DeviceType">Desktop</value>
|
||||||
|
<value type="QString" key="ProjectExplorer.ProjectConfiguration.DefaultDisplayName">Desktop</value>
|
||||||
|
<value type="QString" key="ProjectExplorer.ProjectConfiguration.DisplayName">Desktop</value>
|
||||||
|
<value type="QString" key="ProjectExplorer.ProjectConfiguration.Id">{65a14f9e-e008-4c1b-89df-4eaa4774b6e3}</value>
|
||||||
|
<value type="int" key="ProjectExplorer.Target.ActiveBuildConfiguration">0</value>
|
||||||
|
<value type="int" key="ProjectExplorer.Target.ActiveDeployConfiguration">0</value>
|
||||||
|
<value type="int" key="ProjectExplorer.Target.ActiveRunConfiguration">0</value>
|
||||||
|
<valuemap type="QVariantMap" key="ProjectExplorer.Target.BuildConfiguration.0">
|
||||||
|
<value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory">/tmp/1/home/eddy/BMP280</value>
|
||||||
|
<valuemap type="QVariantMap" key="ProjectExplorer.BuildConfiguration.BuildStepList.0">
|
||||||
|
<valuemap type="QVariantMap" key="ProjectExplorer.BuildStepList.Step.0">
|
||||||
|
<valuelist type="QVariantList" key="GenericProjectManager.GenericMakeStep.BuildTargets">
|
||||||
|
<value type="QString">all</value>
|
||||||
|
</valuelist>
|
||||||
|
<value type="bool" key="ProjectExplorer.BuildStep.Enabled">true</value>
|
||||||
|
<value type="QString" key="ProjectExplorer.ProjectConfiguration.Id">GenericProjectManager.GenericMakeStep</value>
|
||||||
|
</valuemap>
|
||||||
|
<value type="int" key="ProjectExplorer.BuildStepList.StepsCount">1</value>
|
||||||
|
<value type="QString" key="ProjectExplorer.ProjectConfiguration.DefaultDisplayName">Сборка</value>
|
||||||
|
<value type="QString" key="ProjectExplorer.ProjectConfiguration.DisplayName">Сборка</value>
|
||||||
|
<value type="QString" key="ProjectExplorer.ProjectConfiguration.Id">ProjectExplorer.BuildSteps.Build</value>
|
||||||
|
</valuemap>
|
||||||
|
<valuemap type="QVariantMap" key="ProjectExplorer.BuildConfiguration.BuildStepList.1">
|
||||||
|
<valuemap type="QVariantMap" key="ProjectExplorer.BuildStepList.Step.0">
|
||||||
|
<valuelist type="QVariantList" key="GenericProjectManager.GenericMakeStep.BuildTargets">
|
||||||
|
<value type="QString">clean</value>
|
||||||
|
</valuelist>
|
||||||
|
<value type="bool" key="ProjectExplorer.BuildStep.Enabled">true</value>
|
||||||
|
<value type="QString" key="ProjectExplorer.ProjectConfiguration.Id">GenericProjectManager.GenericMakeStep</value>
|
||||||
|
</valuemap>
|
||||||
|
<value type="int" key="ProjectExplorer.BuildStepList.StepsCount">1</value>
|
||||||
|
<value type="QString" key="ProjectExplorer.ProjectConfiguration.DefaultDisplayName">Очистка</value>
|
||||||
|
<value type="QString" key="ProjectExplorer.ProjectConfiguration.DisplayName">Очистка</value>
|
||||||
|
<value type="QString" key="ProjectExplorer.ProjectConfiguration.Id">ProjectExplorer.BuildSteps.Clean</value>
|
||||||
|
</valuemap>
|
||||||
|
<value type="int" key="ProjectExplorer.BuildConfiguration.BuildStepListCount">2</value>
|
||||||
|
<value type="bool" key="ProjectExplorer.BuildConfiguration.ClearSystemEnvironment">false</value>
|
||||||
|
<valuelist type="QVariantList" key="ProjectExplorer.BuildConfiguration.CustomParsers"/>
|
||||||
|
<value type="bool" key="ProjectExplorer.BuildConfiguration.ParseStandardOutput">false</value>
|
||||||
|
<valuelist type="QVariantList" key="ProjectExplorer.BuildConfiguration.UserEnvironmentChanges"/>
|
||||||
|
<value type="QString" key="ProjectExplorer.ProjectConfiguration.DisplayName">По умолчанию</value>
|
||||||
|
<value type="QString" key="ProjectExplorer.ProjectConfiguration.Id">GenericProjectManager.GenericBuildConfiguration</value>
|
||||||
|
</valuemap>
|
||||||
|
<value type="int" key="ProjectExplorer.Target.BuildConfigurationCount">1</value>
|
||||||
|
<valuemap type="QVariantMap" key="ProjectExplorer.Target.DeployConfiguration.0">
|
||||||
|
<valuemap type="QVariantMap" key="ProjectExplorer.BuildConfiguration.BuildStepList.0">
|
||||||
|
<value type="int" key="ProjectExplorer.BuildStepList.StepsCount">0</value>
|
||||||
|
<value type="QString" key="ProjectExplorer.ProjectConfiguration.DefaultDisplayName">Развёртывание</value>
|
||||||
|
<value type="QString" key="ProjectExplorer.ProjectConfiguration.DisplayName">Развёртывание</value>
|
||||||
|
<value type="QString" key="ProjectExplorer.ProjectConfiguration.Id">ProjectExplorer.BuildSteps.Deploy</value>
|
||||||
|
</valuemap>
|
||||||
|
<value type="int" key="ProjectExplorer.BuildConfiguration.BuildStepListCount">1</value>
|
||||||
|
<valuemap type="QVariantMap" key="ProjectExplorer.DeployConfiguration.CustomData"/>
|
||||||
|
<value type="bool" key="ProjectExplorer.DeployConfiguration.CustomDataEnabled">false</value>
|
||||||
|
<value type="QString" key="ProjectExplorer.ProjectConfiguration.Id">ProjectExplorer.DefaultDeployConfiguration</value>
|
||||||
|
</valuemap>
|
||||||
|
<value type="int" key="ProjectExplorer.Target.DeployConfigurationCount">1</value>
|
||||||
|
<valuemap type="QVariantMap" key="ProjectExplorer.Target.RunConfiguration.0">
|
||||||
|
<valuelist type="QVariantList" key="CustomOutputParsers"/>
|
||||||
|
<value type="int" key="PE.EnvironmentAspect.Base">2</value>
|
||||||
|
<valuelist type="QVariantList" key="PE.EnvironmentAspect.Changes"/>
|
||||||
|
<value type="QString" key="ProjectExplorer.ProjectConfiguration.Id">ProjectExplorer.CustomExecutableRunConfiguration</value>
|
||||||
|
<value type="QString" key="ProjectExplorer.RunConfiguration.BuildKey"></value>
|
||||||
|
<value type="bool" key="RunConfiguration.UseCppDebugger">false</value>
|
||||||
|
<value type="bool" key="RunConfiguration.UseCppDebuggerAuto">true</value>
|
||||||
|
<value type="bool" key="RunConfiguration.UseQmlDebugger">false</value>
|
||||||
|
<value type="bool" key="RunConfiguration.UseQmlDebuggerAuto">true</value>
|
||||||
|
</valuemap>
|
||||||
|
<value type="int" key="ProjectExplorer.Target.RunConfigurationCount">1</value>
|
||||||
|
</valuemap>
|
||||||
|
</data>
|
||||||
|
<data>
|
||||||
|
<variable>ProjectExplorer.Project.TargetCount</variable>
|
||||||
|
<value type="int">1</value>
|
||||||
|
</data>
|
||||||
|
<data>
|
||||||
|
<variable>ProjectExplorer.Project.Updater.FileVersion</variable>
|
||||||
|
<value type="int">22</value>
|
||||||
|
</data>
|
||||||
|
<data>
|
||||||
|
<variable>Version</variable>
|
||||||
|
<value type="int">22</value>
|
||||||
|
</data>
|
||||||
|
</qtcreator>
|
||||||
1
BMPE280/bmp280.cxxflags
Normal file
1
BMPE280/bmp280.cxxflags
Normal file
@ -0,0 +1 @@
|
|||||||
|
-std=c++17
|
||||||
5
BMPE280/bmp280.files
Normal file
5
BMPE280/bmp280.files
Normal file
@ -0,0 +1,5 @@
|
|||||||
|
BMP280.c
|
||||||
|
BMP280.h
|
||||||
|
i2c.c
|
||||||
|
i2c.h
|
||||||
|
main.c
|
||||||
|
After Width: | Height: | Size: 37 B |
1
BMPE280/bmp280.includes
Normal file
1
BMPE280/bmp280.includes
Normal file
@ -0,0 +1 @@
|
|||||||
|
.
|
||||||
249
BMPE280/i2c.c
Normal file
249
BMPE280/i2c.c
Normal file
@ -0,0 +1,249 @@
|
|||||||
|
/*
|
||||||
|
* This file is part of the bmp280 project.
|
||||||
|
* Copyright 2022 Edward V. Emelianov <edward.emelianoff@gmail.com>.
|
||||||
|
*
|
||||||
|
* This program is free software: you can redistribute it and/or modify
|
||||||
|
* it under the terms of the GNU General Public License as published by
|
||||||
|
* the Free Software Foundation, either version 3 of the License, or
|
||||||
|
* (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <stdio.h>
|
||||||
|
#include <stdlib.h>
|
||||||
|
#include <string.h>
|
||||||
|
#include <fcntl.h>
|
||||||
|
#include <sys/ioctl.h>
|
||||||
|
#include <asm/ioctl.h>
|
||||||
|
#include <linux/i2c.h>
|
||||||
|
#include <linux/i2c-dev.h>
|
||||||
|
#include <usefull_macros.h>
|
||||||
|
|
||||||
|
static uint8_t lastaddr = 0;
|
||||||
|
static int I2Cfd = -1;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief i2c_read_reg8 - read 8-bit addressed register (8 bit)
|
||||||
|
* @param regaddr - register address
|
||||||
|
* @param data - data read
|
||||||
|
* @return state
|
||||||
|
*/
|
||||||
|
int i2c_read_reg8(uint8_t regaddr, uint8_t *data){
|
||||||
|
if(I2Cfd < 1) return FALSE;
|
||||||
|
struct i2c_smbus_ioctl_data args;
|
||||||
|
union i2c_smbus_data sd;
|
||||||
|
args.read_write = I2C_SMBUS_READ;
|
||||||
|
args.command = regaddr;
|
||||||
|
args.size = I2C_SMBUS_BYTE_DATA;
|
||||||
|
args.data = &sd;
|
||||||
|
if(ioctl(I2Cfd, I2C_SMBUS, &args) < 0){
|
||||||
|
WARN("i2c_read_reg8, ioctl()");
|
||||||
|
return FALSE;
|
||||||
|
}
|
||||||
|
if(data) *data = sd.byte;
|
||||||
|
return TRUE;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief i2c_write_reg8 - write to 8-bit addressed register
|
||||||
|
* @param regaddr - address
|
||||||
|
* @param data - data
|
||||||
|
* @return state
|
||||||
|
*/
|
||||||
|
int i2c_write_reg8(uint8_t regaddr, uint8_t data){
|
||||||
|
if(I2Cfd < 1) return FALSE;
|
||||||
|
struct i2c_smbus_ioctl_data args;
|
||||||
|
union i2c_smbus_data sd;
|
||||||
|
sd.byte = data;
|
||||||
|
args.read_write = I2C_SMBUS_WRITE;
|
||||||
|
args.command = regaddr;
|
||||||
|
args.size = I2C_SMBUS_BYTE_DATA;
|
||||||
|
args.data = &sd;
|
||||||
|
if(ioctl(I2Cfd, I2C_SMBUS, &args) < 0){
|
||||||
|
WARN("i2c_write_reg8, ioctl()");
|
||||||
|
return FALSE;
|
||||||
|
}
|
||||||
|
return TRUE;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief i2c_read_reg16 - read 16-bit addressed register (to 16-bit data)
|
||||||
|
* @param regaddr - address
|
||||||
|
* @param data - data
|
||||||
|
* @return state
|
||||||
|
*/
|
||||||
|
int i2c_read_reg16(uint16_t regaddr, uint16_t *data){
|
||||||
|
if(I2Cfd < 1) return FALSE;
|
||||||
|
struct i2c_msg m[2];
|
||||||
|
struct i2c_rdwr_ioctl_data x = {.msgs = m, .nmsgs = 2};
|
||||||
|
m[0].addr = lastaddr; m[1].addr = lastaddr;
|
||||||
|
m[0].flags = 0;
|
||||||
|
m[1].flags = I2C_M_RD;
|
||||||
|
m[0].len = 2; m[1].len = 2;
|
||||||
|
uint8_t a[2], d[2] = {0};
|
||||||
|
a[0] = regaddr >> 8;
|
||||||
|
a[1] = regaddr & 0xff;
|
||||||
|
m[0].buf = a; m[1].buf = d;
|
||||||
|
if(ioctl(I2Cfd, I2C_RDWR, &x) < 0){
|
||||||
|
WARN("i2c_read_reg16, ioctl()");
|
||||||
|
return FALSE;
|
||||||
|
}
|
||||||
|
if(data) *data = (uint16_t)((d[0] << 8) | (d[1]));
|
||||||
|
return TRUE;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief i2c_write_reg16 - write 16-bit data value to 16-bit addressed register
|
||||||
|
* @param regaddr - address
|
||||||
|
* @param data - data to write
|
||||||
|
* @return state
|
||||||
|
*/
|
||||||
|
int i2c_write_reg16(uint16_t regaddr, uint16_t data){
|
||||||
|
if(I2Cfd < 1) return FALSE;
|
||||||
|
union i2c_smbus_data d;
|
||||||
|
d.block[0] = 3;
|
||||||
|
d.block[1] = regaddr & 0xff;
|
||||||
|
d.block[2] = data >> 8;
|
||||||
|
d.block[3] = data & 0xff;
|
||||||
|
struct i2c_smbus_ioctl_data args;
|
||||||
|
args.read_write = I2C_SMBUS_WRITE;
|
||||||
|
args.command = regaddr >> 8;
|
||||||
|
args.size = I2C_SMBUS_I2C_BLOCK_DATA;
|
||||||
|
args.data = &d;
|
||||||
|
if(ioctl(I2Cfd, I2C_SMBUS, &args) < 0){
|
||||||
|
WARN("i2c_write_reg16, ioctl()");
|
||||||
|
return FALSE;
|
||||||
|
}
|
||||||
|
/* printf("Block: ");
|
||||||
|
for(int i = 0; i < 4; ++i) printf("0x%02x ", d.block[i]);
|
||||||
|
printf("\n");*/
|
||||||
|
return TRUE;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief i2c_set_slave_address - set current slave address
|
||||||
|
* @param addr - address
|
||||||
|
* @return state
|
||||||
|
*/
|
||||||
|
int i2c_set_slave_address(uint8_t addr){
|
||||||
|
if(I2Cfd < 1) return FALSE;
|
||||||
|
if(ioctl(I2Cfd, I2C_SLAVE, addr) < 0){
|
||||||
|
WARN("i2c_set_slave_address, ioctl()");
|
||||||
|
return FALSE;
|
||||||
|
}
|
||||||
|
lastaddr = addr;
|
||||||
|
return TRUE;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief i2c_open - open I2C device
|
||||||
|
* @param path - full path to device
|
||||||
|
* @return state
|
||||||
|
*/
|
||||||
|
int i2c_open(const char *path){
|
||||||
|
if(I2Cfd > 0) close(I2Cfd);
|
||||||
|
I2Cfd = open(path, O_RDWR);
|
||||||
|
if(I2Cfd < 1){
|
||||||
|
WARN("i2c_open, open()");
|
||||||
|
return FALSE;
|
||||||
|
}
|
||||||
|
return TRUE;
|
||||||
|
}
|
||||||
|
|
||||||
|
void i2c_close(){
|
||||||
|
if(I2Cfd > 0) close(I2Cfd);
|
||||||
|
}
|
||||||
|
|
||||||
|
#if 0
|
||||||
|
// Don't work :(
|
||||||
|
/**
|
||||||
|
* @brief read_regN8 - read up to I2C_SMBUS_BLOCK_MAX bytes from 8-bit addressed register
|
||||||
|
* @param regaddr - address
|
||||||
|
* @param data - data to read
|
||||||
|
* @param N - amount of bytes
|
||||||
|
* @return state
|
||||||
|
*/
|
||||||
|
static int read_regN8(uint8_t regaddr, uint8_t *data, uint16_t N){
|
||||||
|
if(I2Cfd < 1 || N > I2C_SMBUS_BLOCK_MAX || N == 0 || !data) return FALSE;
|
||||||
|
struct i2c_smbus_ioctl_data args = {0};
|
||||||
|
union i2c_smbus_data sd = {0};
|
||||||
|
sd.block[0] = N;
|
||||||
|
DBG("block: %d, %d, %d", sd.block[0], sd.block[1], sd.block[2]);
|
||||||
|
DBG("Try to get %d bytes from 0x%02x", N, regaddr);
|
||||||
|
args.read_write = I2C_SMBUS_READ;
|
||||||
|
args.command = regaddr;
|
||||||
|
args.size = I2C_SMBUS_BLOCK_DATA;
|
||||||
|
args.data = &sd;
|
||||||
|
if(ioctl(I2Cfd, I2C_SMBUS, &args) < 0){
|
||||||
|
WARN("read_regN8, ioctl()");
|
||||||
|
return FALSE;
|
||||||
|
}
|
||||||
|
DBG("block: %d, %d, %d", sd.block[0], sd.block[1], sd.block[2]);
|
||||||
|
memcpy(data, sd.block+1, N);
|
||||||
|
return TRUE;
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief read_data16 - read data from 16-bit addressed register
|
||||||
|
* @param regaddr - address
|
||||||
|
* @param N - amount of bytes
|
||||||
|
* @param array - data read
|
||||||
|
* @return state
|
||||||
|
*/
|
||||||
|
int i2c_read_data16(uint16_t regaddr, uint16_t N, uint8_t *array){
|
||||||
|
if(I2Cfd < 1 || N == 0 || !array) return FALSE;
|
||||||
|
struct i2c_msg m[2];
|
||||||
|
struct i2c_rdwr_ioctl_data x = {.msgs = m, .nmsgs = 2};
|
||||||
|
m[0].addr = lastaddr; m[1].addr = lastaddr;
|
||||||
|
m[0].flags = 0;
|
||||||
|
m[1].flags = I2C_M_RD;
|
||||||
|
m[0].len = 2; m[1].len = N;
|
||||||
|
uint8_t a[2];
|
||||||
|
a[0] = regaddr >> 8;
|
||||||
|
a[1] = regaddr & 0xff;
|
||||||
|
m[0].buf = a; m[1].buf = array;
|
||||||
|
if(ioctl(I2Cfd, I2C_RDWR, &x) < 0){
|
||||||
|
WARN("i2c_read_data16, ioctl()");
|
||||||
|
return FALSE;
|
||||||
|
}
|
||||||
|
return TRUE;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief read_data8 - read data from 8-bit addressed register
|
||||||
|
* @param regaddr - address
|
||||||
|
* @param N - amount of bytes
|
||||||
|
* @param array - data read
|
||||||
|
* @return state
|
||||||
|
*/
|
||||||
|
int i2c_read_data8(uint8_t regaddr, uint16_t N, uint8_t *array){
|
||||||
|
if(I2Cfd < 1 || N < 1 || N+regaddr > 0xff || !array) return FALSE;
|
||||||
|
#if 0
|
||||||
|
uint16_t rest = N;
|
||||||
|
do{
|
||||||
|
uint8_t l = (rest > I2C_SMBUS_BLOCK_MAX) ? I2C_SMBUS_BLOCK_MAX : (uint8_t)rest;
|
||||||
|
if(!read_regN8(regaddr, array, l)){
|
||||||
|
DBG("can't read");
|
||||||
|
return FALSE;
|
||||||
|
}
|
||||||
|
rest -= l;
|
||||||
|
regaddr += l;
|
||||||
|
array += l;
|
||||||
|
}while(rest);
|
||||||
|
#endif
|
||||||
|
for(uint16_t i = 0; i < N; ++i){
|
||||||
|
if(!i2c_read_reg8((uint8_t)(regaddr+i), array++)){
|
||||||
|
DBG("can't read @%dth byte", i);
|
||||||
|
return FALSE;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return TRUE;
|
||||||
|
}
|
||||||
39
BMPE280/i2c.h
Normal file
39
BMPE280/i2c.h
Normal file
@ -0,0 +1,39 @@
|
|||||||
|
/*
|
||||||
|
* This file is part of the bmp280 project.
|
||||||
|
* Copyright 2022 Edward V. Emelianov <edward.emelianoff@gmail.com>.
|
||||||
|
*
|
||||||
|
* This program is free software: you can redistribute it and/or modify
|
||||||
|
* it under the terms of the GNU General Public License as published by
|
||||||
|
* the Free Software Foundation, either version 3 of the License, or
|
||||||
|
* (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#pragma once
|
||||||
|
|
||||||
|
#include <stdint.h>
|
||||||
|
|
||||||
|
#ifndef FALSE
|
||||||
|
#define FALSE 0
|
||||||
|
#endif
|
||||||
|
#ifndef TRUE
|
||||||
|
#define TRUE 1
|
||||||
|
#endif
|
||||||
|
|
||||||
|
int i2c_open(const char *path);
|
||||||
|
void i2c_close();
|
||||||
|
int i2c_set_slave_address(uint8_t addr);
|
||||||
|
int i2c_read_reg8(uint8_t regaddr, uint8_t *data);
|
||||||
|
int i2c_write_reg8(uint8_t regaddr, uint8_t data);
|
||||||
|
int i2c_read_data8(uint8_t regaddr, uint16_t N, uint8_t *array);
|
||||||
|
int i2c_read_reg16(uint16_t regaddr, uint16_t *data);
|
||||||
|
int i2c_write_reg16(uint16_t regaddr, uint16_t data);
|
||||||
|
int i2c_read_data16(uint16_t regaddr, uint16_t N, uint8_t *array);
|
||||||
|
|
||||||
90
BMPE280/main.c
Normal file
90
BMPE280/main.c
Normal file
@ -0,0 +1,90 @@
|
|||||||
|
/*
|
||||||
|
* This file is part of the bmp280 project.
|
||||||
|
* Copyright 2022 Edward V. Emelianov <edward.emelianoff@gmail.com>.
|
||||||
|
*
|
||||||
|
* This program is free software: you can redistribute it and/or modify
|
||||||
|
* it under the terms of the GNU General Public License as published by
|
||||||
|
* the Free Software Foundation, either version 3 of the License, or
|
||||||
|
* (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <stdio.h>
|
||||||
|
#include <unistd.h>
|
||||||
|
#include <usefull_macros.h>
|
||||||
|
|
||||||
|
#include "BMP280.h"
|
||||||
|
#include "i2c.h"
|
||||||
|
|
||||||
|
typedef struct{
|
||||||
|
char *device;
|
||||||
|
int slaveaddr;
|
||||||
|
int help;
|
||||||
|
} glob_pars;
|
||||||
|
|
||||||
|
static glob_pars G = {.device = "/dev/i2c-3", .slaveaddr = BMP280_I2C_ADDRESS};
|
||||||
|
|
||||||
|
static myoption cmdlnopts[] = {
|
||||||
|
{"help", NO_ARGS, NULL, 'h', arg_int, APTR(&G.help), _("show this help")},
|
||||||
|
{"device", NEED_ARG, NULL, 'd', arg_string, APTR(&G.device), _("I2C device path")},
|
||||||
|
{"slave", NEED_ARG, NULL, 'a', arg_int, APTR(&G.slaveaddr), _("I2C slave address (0x76 or 0x77)")},
|
||||||
|
end_option
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
int main(int argc, char **argv){
|
||||||
|
initial_setup();
|
||||||
|
parseargs(&argc, &argv, cmdlnopts);
|
||||||
|
if(G.help) showhelp(-1, cmdlnopts);
|
||||||
|
if(G.slaveaddr < 0 || G.slaveaddr > 0x7f) ERRX("I2C address should be 7-bit");
|
||||||
|
if(!i2c_open(G.device)) ERR("Can't open %s", G.device);
|
||||||
|
if(!i2c_set_slave_address((uint8_t)G.slaveaddr)){
|
||||||
|
WARN("Can't set slave address 0x%02x", G.slaveaddr);
|
||||||
|
goto clo;
|
||||||
|
}
|
||||||
|
if(!i2c_read_reg8(0, NULL)) ERR("Can't connect!");
|
||||||
|
while(!BMP280_init()) sleep(1);
|
||||||
|
uint8_t devid;
|
||||||
|
BMP280_read_ID(&devid);
|
||||||
|
DBG("ID: 0x%02x", devid);
|
||||||
|
while(!BMP280_start()){
|
||||||
|
DBG("Trying to start");
|
||||||
|
sleep(1);
|
||||||
|
}
|
||||||
|
while (1){
|
||||||
|
BMP280_process();
|
||||||
|
BMP280_status s = BMP280_get_status();
|
||||||
|
if(s == BMP280_RDY){ // data ready - get it
|
||||||
|
float T, P, H;
|
||||||
|
int ntries = 0;
|
||||||
|
for(; ntries < 3; ++ntries) if(BMP280_getdata(&T, &P, &H)) break;
|
||||||
|
if(ntries == 3){
|
||||||
|
WARNX("Can't read data");
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
float mm = P * 0.00750062f;
|
||||||
|
printf("T=%.1f, P=%.1fPa (%.1fmmHg)", T, P, mm);
|
||||||
|
if(devid == BME280_CHIP_ID){ // got humidity too
|
||||||
|
printf(", H=%.1f%%", H);
|
||||||
|
}
|
||||||
|
printf("\n");
|
||||||
|
sleep(5);
|
||||||
|
while(!BMP280_start()) usleep(1000);
|
||||||
|
}else if(s == BMP280_ERR){
|
||||||
|
printf("Error in measurement\n");
|
||||||
|
BMP280_reset();
|
||||||
|
BMP280_init();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
clo:
|
||||||
|
i2c_close();
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
Loading…
x
Reference in New Issue
Block a user