ChibiOS Free Embedded RTOS

Thanks a lot, with Your help I get it work.

Joerg

Now I spent again some time to understand the sample.
Basically, I understand the structure of the program. But there are connections that I do not really understand. I would have to understand the whole structure of each function. For that I would need days or weeks, I think. I can only say again ...

This all are ok, but for understanding is a sample / code snipe very helpful. I know that well from the Compiler i used fore Years (Bascom)

I visit that side, I think I have a generally problem understand the syntax

Ok i have ordered a book... I hope is good and coming soon... ChibiOS/RT - Lambert M. Surhone

Do You know that book?

Ok I think that did I understand.

and the other question?

why I have to configure ICU with "lastwide" and lastperiod" ???


Joerg

Yes but why I have to configure ICU with "lastwide" and lastperiod" ???


static void icuwidthcb(ICUDriver *icup) {
last_width = icuGetWidth(icup);
}

static void icuperiodcb(ICUDriver *icup) {
last_period = icuGetPeriod(icup);
}


static ICUConfig icucfg = {
ICU_INPUT_ACTIVE_HIGH,
10000 ...

ok I forget to do that.

then I only need that? And how I will get periodic ?

Sorry I still works more right than wrong with StdLibs from ST and chibios is absolutely different for me.

I think this I need?

static ICUConfig icucfg = {
ICU_INPUT_ACTIVE_HIGH,
10000, /* 10kHz ICU clock frequency. */
icuwidthcb,
icuperiodcb,
NULL,
ICU_CHANNEL_1
};


but this is called by


icucnt_t last_width, last_period;

static void icuwidthcb(ICUDriver *icup) {

palSetPad(GPIOD ...

I did not understand how to use only ICU

In the sample pwm and icu is mixed. There is no simple ICU sample available ???