mirror of
https://github.com/eddyem/stm32samples.git
synced 2025-12-06 02:35:23 +03:00
93 lines
3.1 KiB
C
93 lines
3.1 KiB
C
/*
|
|
* This file is part of the bme280 project.
|
|
* Copyright 2025 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 "hardware.h"
|
|
#include "i2c.h"
|
|
#include "proto.h"
|
|
#include "spi.h"
|
|
#include "strfunc.h"
|
|
#include "usb_dev.h"
|
|
#include "BMP280.h"
|
|
|
|
#define MAXSTRLEN RBINSZ
|
|
|
|
volatile uint32_t Tms = 0;
|
|
|
|
void sys_tick_handler(void){
|
|
++Tms;
|
|
}
|
|
|
|
int main(void){
|
|
char inbuff[MAXSTRLEN+1];
|
|
if(StartHSE()){
|
|
SysTick_Config((uint32_t)72000); // 1ms
|
|
}else{
|
|
StartHSI();
|
|
SysTick_Config((uint32_t)48000); // 1ms
|
|
}
|
|
hw_setup();
|
|
USBPU_OFF();
|
|
USB_setup();
|
|
//BMP280_setup(0, 1);
|
|
uint32_t ctr = Tms, Tmeas = 0;
|
|
USBPU_ON();
|
|
while(1){
|
|
if(Tms - ctr > 499){
|
|
ctr = Tms;
|
|
pin_toggle(GPIOB, 1 << 1 | 1 << 0); // toggle LED @ PB0
|
|
}
|
|
int l = USB_receivestr(inbuff, MAXSTRLEN);
|
|
if(l < 0) USB_sendstr("ERROR: USB buffer overflow or string was too long\n");
|
|
else if(l){
|
|
const char *ans = parse_cmd(inbuff);
|
|
if(ans) USB_sendstr(ans);
|
|
}
|
|
BMP280_status s = BMP280_get_status();
|
|
if(s != BMP280_NOTINIT){
|
|
if(s == BMP280_ERR) BMP280_init();
|
|
else{
|
|
BMP280_process();
|
|
s = BMP280_get_status(); // refresh status after processing
|
|
float Temperature, Pressure, Humidity, Dewpoint;
|
|
if(s == BMP280_RDY && BMP280_getdata(&Temperature, &Pressure, &Humidity)){
|
|
Dewpoint = Tdew(Temperature, Humidity);
|
|
USB_sendstr("Tdeg="); USB_sendstr(float2str(Temperature, 2)); USB_sendstr("\nPpa=");
|
|
USB_sendstr(float2str(Pressure, 3));
|
|
USB_sendstr("\nPmm="); USB_sendstr(float2str(Pressure * 0.00750062f, 2));
|
|
USB_sendstr("\nH="); USB_sendstr(float2str(Humidity, 2));
|
|
USB_sendstr("\nTdew="); USB_sendstr(float2str(Dewpoint, 1));
|
|
newline();
|
|
}
|
|
if(contmeas && (Tms - Tmeas > 999)){
|
|
if(BMP280_start()) Tmeas = Tms;
|
|
}
|
|
}
|
|
}
|
|
if(i2c_scanmode){
|
|
uint8_t addr;
|
|
int ok = i2c_scan_next_addr(&addr);
|
|
if(addr == I2C_ADDREND) USND("End scan");
|
|
else if(ok){
|
|
USB_sendstr(uhex2str(addr));
|
|
USB_sendstr(" ("); USB_sendstr(u2str(addr));
|
|
USB_sendstr(") - found device\n");
|
|
}
|
|
}
|
|
}
|
|
}
|