ChibiOS Free Embedded RTOS

Thanks a lot Giovanni!

As always you ware right!
Everything works well now!

BTW. Happy new year!

Greetings,
Piotr

I have forgotten to say- I am using latest trunk.

Piotr

Hi Giovanni!

Thanks for the answer.
The DHT22 needs a little trick to start transmittion.
It needs the line to be set HIGH to LOW for 20ms then back to HIGH.

HIGH to LOW is done by:
palSetPadMode(GPIOB, 6, PAL_MODE_OUTPUT_OPENDRAIN);
palWritePad(GPIOB, 6, PAL_LOW);
chThdSleepMilliseconds(20 ...

Hi,

I have bought very basic board with STM32F103C8T6 uC.
I am trying to make the icu to work w/o success.
The ICU seems not to start as the line is low after starting and enabling the ICU.
Very similar code works well on STM32F4 board.


DHT_icucfg.mode = ICU_INPUT_ACTIVE_HIGH;
DHT_icucfg ...

OMG! Shortening the wires did the trick!
I would never guess that 25cm wires are way too long.



HUGE thanks to all for your help

Greetings,
Piotr Klimczak

25cm. Too long? Will give it a try.
Greetings
Piotr

Hi Giovanni!

On the ethernet dovelopment post you wrote:

by Giovanni » Mon Mar 26, 2012 3:40 pm

Hardware discussions are absolutely welcome.

BTW, one of the ChibiOS customers created a control board based on the STM32F4-Discovery, it has the DP83848 in RMII mode clocked by a MCO. I should ...

One more thing.

Please also note, that for bmsr I am also getting the value 1111111111111111 from time to time.
How can i change the clocks to be sure that it is the hardware problem, not software?

Thanks in advance!

I have changed one more thing in comparision to pure svn trunk:

Index: mcuconf.h
===================================================================
--- mcuconf.h (revision 4948)
+++ mcuconf.h (working copy)
@@ -45,7 +45,7 @@
#define STM32_CLOCK48_REQUIRED TRUE
#define STM32_SW ...

Hi Giovanni,

Accoring to clocking, question- everything works on defaults just like in LWIP demo example. I was trying to change as little as possible to eliminate possible failure causes- which is me and my code . I just wanted to be sure that that it is not my fault
It has a 50MHz oscillator ...