ChibiOS Free Embedded RTOS

Am I correct in that it won't work for sensors on say PA2, PB2, PB3, because those share the same EXT interrupt line?
Yes, you are right.
Is the EXT module initialized when a conversion starts? (i.e. I could have sensors on those pins, but just the conversions can't be active at the same time) or ...

I've updated DHT driver.
- now it supports DHT11, DHT22 or both simultaneously (should be defined in .h file). Not tested on DHT22 but should work;
- supports CRC checking;
- supports as many sensors as you want, on any pin simultaneously;
- supports any free timer (not fully tested but works ...

Michail, would be nice to expand this driver to work for DHT22 too. Your DHT11 has "binary RH data" followed by a byte "decimal RH data". You ignore the decimal one if I read the code correctly. My DHT22 has just a 16-bit field that indicates the RH in tenths of a percent. Similarly, the ...

Of course. It's not fully ready, normally works only with 1 sensor on 1 pin, but it works for me on STM32F0x...

Usage is:


DHTD1.ext_pin = DHT11_PIN;
DHTD1.ext_port = GPIOA;
DHTD1.ext_drv = &EXTD1;
DHTD1.ext_mode = EXT_CH_MODE_BOTH_EDGES | EXT_CH_MODE_AUTOSTART | EXT_MODE ...

Yes, now everything works fine!

Thank you!

Hello Barthess, hi Giovanni!

Think I've stumbled upon a bug in the RTC driver in current trunk on STM32F100C8.

In halInit() function hal_lld_init() calls before rtcInit().
hal_lld_init() calls hal_lld_backup_domain_init(), it calls rtc_lld_set_prescaler(), it calls rtc_acquire_access() and at last ...

Hurrah, at last I won it!

Problem was in:
chSysLockFromISR();
chVTSetI(&sensor->timer, MS2ST(5), dht11_timer_handler, sensor);
extChannelEnableI(sensor->ext_drv, sensor->ext_pin);
chSysUnlockFromISR();
palSetPad(sensor->ext_port, sensor->ext_pin);
palSetPadMode(sensor->ext_port, sensor->ext ...

Giovanni wrote:Do you have all debug options enabled?

Only shown above. In fact, all that I was changing - CH_DEBUG

Thanks for confirming my hypothesis, tomorrow I'll try to set NanoSleeps in code

Hello!

All about Chibios 3.0 from trunk, and STM32F031F4.

I'm using this driver for hymidity sensor DHT11 (founded somewhere on the internet and some modified):
#include "ch.h"
#include "hal.h"
#include "ext.h"
#include "chconf.h"
#include "core.h"

#if DHT11_PRESENT

#include ...

Got it, thank you. Now everything compiles fine!