Deep sleep using timer limited to 2 minutes #230
Comments
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Seems to be more than one clock source available to be configured for sleep modes, not sure if all of them are available for deep sleep but I think at least the two based on 32kHz crystal |
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I think the problem is on this part: uint64_t duration_math = 32768 * sleep_duration;Looks like the variable is not capable (?) of holding a 64 bit unsigned int, not sure how to probe this in a better way but I tried testing with this piece of code: void setup() {
Serial.println("Boot");
for(int s = 0; s < 300; s++){
uint32_t sleep_duration = s*1000; //ms
uint32_t sleep_time; // From manual_ps_pub.h as UINT32
uint64_t duration_math = 32768 * sleep_duration;
if (duration_math / 1000 > 0xFFFFFFFF) {
// Sleep forever
sleep_time = 0xFFFFFFFF;
} else {
sleep_time = (duration_math / 1000) & 0xFFFFFFFF;
}
Serial.print("Seconds: ");
Serial.print(s);
Serial.print(" duration_math: ");
Serial.print(duration_math);
Serial.print(" sleep_time: ");
Serial.println(sleep_time);
}
}And at about 131 seconds the variable for sleep_time overflow: Using seconds and not milliseconds works fine, at least tested up to 15 minutes, but some precision is lost... Working on a PR |
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Seems to work fine now with the change:
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Since |
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Hello, How did you fix this? Do you use any external components or how? Thanks |
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hello, I use bk72xx boards in esphome home assistant integration. how I can add deep sleep to my bk72xx boards. could you provide ,yaml example? or maybe something must be added before? Ed |
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Fixed in #253. |
Looks like setting the wake up timer for deep sleep only works as expected up to about 120 seconds (~2 min). Setting a longer sleep time results on sleeping only for about 15 ~ 20 seconds.
With 150 seconds
With 120 seconds
Is in deep sleep in both cases, tested checking power consumption using a lab PSU.
Code:
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