Memory Consumption

Device Buffer, usage per device

The following table lists the required bytes from the device buffer for each device.

	Fast IO AVR	Normal IO AVR	Pico
analog device	29 byte	29 byte	40 byte
button	6 byte	4 byte	8 byte
digital input MUX	9 byte	6 byte	8 byte
encoder	35 byte	31 byte	29 byte
input shifter	17 byte	11 byte	16 byte
lcdDisplay	18 byte	18 byte	24 byte
output	2 byte	2 byte	2 byte
Output Shifter	15 byte	9 byte	9 byte
Led Segment	(28) byte	25 byte	36 byte
Servos	23 byte	23 byte	64 byte
Stepper	14 byte	14 byte	100 byte

required bytes for LED Segment with Fast IO might be wrong, must be checked again

Memory consumption per Board

FastIO is not implemented yet and it has to be decided if this will be implemented. The requried memory consumption for this is listed to get a decision.

Mega:

NormalIO

RAM:   [======    ]  55.3% (used 4528 bytes from 8192 bytes)
Flash: [=         ]  10.8% (used 27534 bytes from 253952 bytes)

-> 226.418 bytes left

FastIO

RAM:   [======    ]  55.4% (used 4540 bytes from 8192 bytes)
Flash: [=         ]  11.2% (used 28354 bytes from 253952 bytes)

-> 225.598 bytes left

Device Buffer 1496 byte

Name Buffer with 1000 byte can be freed up

Bytes which are requested from the device buffer

Device	FastIO	NormalIO
40 Outputs:	80 byte	80 byte
68 Buttons:	408 byte	272 byte
4 LEDSegment:	112 byte	88 byte
20 Encoder:	700 byte	620 byte
10 Stepper:	140 byte	140 byte
10 Servos:	230 byte	230 byte
2 LCD:	36 byte	36 byte
16 AnalogIn:	464 byte	464 byte
4 OutputShifter:	60 byte	36 byte
4 InputShifter:	68 byte	44 byte
4 MUX:	36 byte	24 byte

Micro:

NormalIO

RAM:   [========  ]  76.6% (used 1960 bytes from 2560 bytes)
Flash: [==========]  97.4% (used 27916 bytes from 28672 bytes)

-> 756 bytes left

FastIO

RAM:   [========  ]  77.0% (used 1972 bytes from 2560 bytes)
Flash: [==========]  100.2% (used 28718 bytes from 28672 bytes)

-> exceeds Flash!!! Further measures to decrease the flash would be required. On the other hand it is very likely that encoders on multiplexers will also not fit into the memory, therefore a FastIO is not really required.

Device Buffer 440 byte

Name Buffer with 350 byte can be freed up

Bytes which are requested from the device buffer

Device	FastIO	NormalIO
18 Outputs:	36 byte	36 byte
18 Buttons:	108 byte	72 byte
1 LEDSegment:	28 byte	22 byte
9 Encoder:	315 byte	279 byte
3 Stepper:	42 byte	32 byte
3 Servos:	69 byte	69 byte
2 LCD:	36 byte	36 byte
5 AnalogIn:	145 byte	145 byte
2 OutputShifter:	30 byte	18 byte
2 InputShifter:	34 byte	22 byte
3 MUX:	27 byte	18 byte

---

Uno/Nano:

NormalIO

RAM:   [========= ]  86.6% (used 1773 bytes from 2048 bytes)
Flash: [========  ]  83.3% (used 25598 bytes from 30720 bytes)

-> 5.122 bytes left

FastIO

RAM:   [========= ]  87.2% (used 1785 bytes from 2048 bytes)
Flash: [========= ]  86.0% (used 26418 bytes from 30720 bytes)

-> 4.302 bytes left

Device Buffer 286 byte

Name Buffer with 220 byte can be freed up

Bytes which are requested from the device buffer

Device	FastIO	NormalIO
18 Outputs:	36 byte	36 byte
18 Buttons:	108 byte	72 byte
1 LEDSegment:	22 byte	22 byte
9 Encoder:	!!!315 byte	279 byte
2 Stepper:	28 byte	28 byte
2 Servos:	46 byte	46 byte
2 LCD:	36 byte	36 byte
6 AnalogIn:	174 byte	174 byte
2 OutputShifter:	30 byte	18 byte
2 InputShifter:	34 byte	22 byte
3 MUX:	27 byte	18 byte

Pico:

NormalIO

RAM:   [=         ]   7.1% (used 18504 bytes from 262144 bytes)
Flash: [          ]   3.6% (used 74892 bytes from 2093056 bytes)

-> 2.018.164 bytes left

FastIO

RAM:   [=         ]   7.1% (used 18536 bytes from 262144 bytes)
Flash: [          ]   3.6% (used 75220 bytes from 2093056 bytes)

-> 2.017.836 bytes left

Device Buffer 1496 byte

Name Buffer with 1000 byte can be freed up

Bytes which are requested from the device buffer

Device	FastIO	NormalIO
26 Outputs:	52 byte	52 byte
26 Buttons:	156 byte	104 byte
4 LEDSegment:	112 byte	88 byte
8 Encoder:	280 byte	248 byte
6 Stepper:	84 byte	84 byte
8 Servos:	184 byte	184 byte
2 LCD:	36 byte	36 byte
3 AnalogIn:	87 byte	87 byte
4 OutputShifter:	60 byte	36 byte
4 InputShifter:	68 byte	44 byte
4 MUX:	36 byte	24 byte