Subject:
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Re: Is this an error in legOS 0.2.5?
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Sat, 28 Jul 2001 13:08:54 GMT
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Viewed:
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1555 times
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> browsing through the legOS 0.2.5 source I found the following part • in
> kernel/battery.c:
> ---------------------------------------
> //! battery indicator handler, called from system timer interrupt
> #ifdef CONF_RCX_COMPILER
> void battery_refresh(void) {
> #else
> HANDLER_WRAPPER("battery_refresh","battery_refresh_core");
> void battery_refresh_core(void) {
> #endif
> int bmv = get_battery_mv();
>
> if (bmv > BATTERY_NORMAL_THRESHOLD_MV)
> dlcd_hide(LCD_BATTERY_X);
> else if (bmv > BATTERY_LOW_THRESHOLD_MV) <------ ???
> dlcd_show(LCD_BATTERY_X);
> }
> ---------------------------------------
Statement should be right. It's same behavier found in original
firmware:
http://graphics.stanford.edu/~kekoa/rcx/index.html#Rom
if (battery power (cc5a) > 1a2c (6700 mV))
call ROM 1e4a (r6=301b) // clear battery low indicator
else if (battery power (cc5a) > 189c (6300 mV))
call ROM 1b62 (r6=301b) // set battery low indicator
In original firmware we also got:
else
battery low (cc64) = 1
call ROM 27ac
call ROM 1b62 (r6=301b) // set battery low indicator
call ROM 27c8
call ROM 339a (r6=0) // reset internal minute timer
minutes to power off (cc12) = 1
that in legOS is missing.
Bye,
Paolo.
---
Segal's Law: A man with a watch knows what time it is. A man with two
watches is never sure.
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Message has 1 Reply:
 | | Re: Is this an error in legOS 0.2.5?
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| So in the original firmware, the system is shut down if ultra-low battery is detected. If we don't want tot do that, we could change the ">" in the 2nd compare to a "<" to get some hysteresis. Or would it be usefull to stop legOS and do a shut-down (...) (23 years ago, 29-Jul-01, to lugnet.robotics.rcx.legos)
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Message is in Reply To:
| | Is this an error in legOS 0.2.5?
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| Hi, browsing through the legOS 0.2.5 source I found the following part in kernel/battery.c: ---...--- //! battery indicator handler, called from system timer interrupt #ifdef CONF_RCX_COMPILER void battery_refresh(void) { #else (...) (23 years ago, 2-Jul-01, to lugnet.robotics.rcx.legos)
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